Abstract:Floor slab, as main components of structure, has a great influence for progressive collapse. Therefore, in the research of progressive collapse, it is necessary to consider the role of the floor. we use the finite element program of ABAQUS, and simulate the failure of center pillar along long side about the frame structure with two layers. Contrast progressive collapse cases of RC frame structure for considering and not considering floor effect, summed up the floor impact on continuous collapse of RC frame structure. The results show that the floor can greatly improve the resistance and stiffness of the structure, increase structural integrity, and postpone the beam hinge appearing to improve the performance of the structure resisting progressive collapse.

Abstract:Six full-scale recycled concrete interior joints under cyclicloading to study the bond and anchorage property with low axial load ratios.The diameter, strength of the longitudinal bar across the core of the joint is different, aiming to find out the minimum relative anchorage length in recycled concrete joint. Besides, the effect of the new anchorage method of the bar to bond property and shear resisting property is still studied. The results shows that with low axial load ratios, bond and anchorage failure will occur in the recycled concrete joints designed by recent codes. Using barsof small diameter and welding transverse reinforcement on the beam longitudinal reinforcement in joint zone will improve anchorage performance.The shear bearing capacity of the recycled concrete joints should be reduced by the calculation formula of common concrete joints.

Abstract:High-strength lightweight aggregate concrete (HSLAC) with high-strength, light-weight and good frost resisting property and impermeability has the better application prospect, but its low modulus leads to brittle failure. A large number of domestic and abroad shear test data of lightweight aggregate concrete beams were collected, and through the strength grade LC40 divided the test specimens into the normal strength lightweight aggregate concrete (LAC) beams and HSLAC beams. The paper combined the national specification recommended method with the typical statistical model to calculate the carrying capacity of beams, and also presents their comparison with experiment results. Research shows that the shear bearing capacity of LAC beams is lower than the normal weight concrete beams with same strength level, and the increased range of shear bearing capacity of LAC beams is decreased with the increase of concrete strength. The reasonable reduced concrete strength coefficients should be proposed to be used in the design specification according to the different intensity.

Abstract:To study the mechanical properties of square steel tube filled with steel-reinforced high strength concrete short composite column under axial load. Based on the reasonable selection of steel and concrete constitutive relation model and define the element type, contact model and load boundary conditions and loading pattern correctly. Using the large-scale general finite element analysis software ABAQUS to establish the finite element model of the square steel tube filled with steel-reinforced high strength concrete short composite column under axial load. The load versus strain relationship curves of the short composite columns were obtained by post-processing and were compared with the test results. At the same time, the whole process and the final failure mode of the typical specimen are analyzed. And the different categories simplified bearing capacity calculation formula of short composite column under axial load has been compared, and the optimal simplified formula was given.

Abstract:Based on the plane section assumption and the characteristic of self compacting concrete (SCC) composite shear walls, the calculation method of yield displacement was established and tested by the experimental results of five SCC composite shear walls. Then, the interrelated relationships among the axial compression ratio, the strength of concrete, the reinforcement ratio of distributing bars, the reinforcement ratio of anchor bars and the yield displacement were obtained. The results show that choosing the reasonable reinforcement ratio of anchor bars, limiting the axial compression ratio and increasing the characteristic value of strength of concrete can improve the yield displacement of SCC composite shear walls. The reliability of the method is certified through the comparison of the analysis results and the experimental results.

Abstract:Seven of circular hollow section column and H-shaped beams analysis models were established by ABAQUS. The main parameters include the beam flange thickness and width, the beam web thickness and height, the column thickness, the external diaphragm width and the thickness. The influence of the main parameters on the bearing capacity and the stiffness had been investigated. OpenSees program also been used in this paper to compare with the test results using the evaluating formula come from the finite element analysis results.

Abstract:Through the method of reinforced electrifying corrosion,three points loaded test were carried out on 12 recycled aggregate concrete beams with 100% coarse aggregate replacement rate and different corrosion rate,and the effect of mechanical properties under the same strength conditions of different steel diameter and corrosion rate of recycled aggregate concrete beams were analyzed.Results show that when the steel corrosion rate is less than 10%, the bond strength of steel and recycled concrete beams sufficient to ensure that both can work together,and the test beams occurred damage mode of material strength ;when the steel corrosion rate is greater than 10%,the bond strength of steel and recycled concrete beams insufficient to ensure that both can work together,and the test beams occurred damage mode of bond failure.Based on ANSYS finite element software with different reinforcement corrosion rate of recycled concrete beams simulation analysis, and the load-stress curve of the cross section of the corroded reinforced recycled concrete beams were checked, through the finite element results compared with the test results, verify the reliability of the finite element analysis model.

Abstract:As the global resources increasingly scarce, environment is becoming more and more bad, for building materials, environmental protection put forward higher request.And bamboo belongs to renewable resources, economy and environmental protection, apply bamboo instead of steel to concrete floor, not only reduced the steel complex processing working procedure, and increase the rate of the hollow plate, so as to achieve the purpose of reducing weight.For the study of bamboo sticks bamboo mechanical performance of reinforced concrete plate, the 3 piece of reinforcement ratio of different bamboo stiffened plate under uniformly distributed load bending test performance and related material mechanical performance test.Through the experimental phenomena and data contrast analysis, shows that bamboo tensile damage no yield point, belongs to brittle materials;Plate damage, its midspan deflection can reach above, good ductility;Bamboo reinforcement plate bending process, a two stage characteristics, namely the elastic stage before cracking and crack fracture work until after failure;Combined with test deflection, strain, crack, bearing capacity calculation, proposes the bamboo sticks bamboo reinforcement construction measures and Suggestions about the design of concrete slab.

Abstract:The nonlinear vibration response of structural members is an important basis for cracking resulting structural damage identification, and choose the right model for accurate calculation of this non-linear vibration response is critical. According variation during vibration cracks in structural rigidity of the existing breathing crack model were analyzed and summarized, and select two models with a typical representative to bring crack cantilever forced harmonic vibration, for example, comparative analysis of the two the spectral characteristics of different types of models at different excitation frequencies and crack depth structural response. The results showed that: wire-type breathing crack model under the same conditions are more vulnerable to high-frequency component and the resonance phenomenon is more curved breathing crack model, to better characterize the crack breathing effect during vibration of.

Abstract:Digital image correlation (DIC) is a non-contact, full-field optical measurement method .DIC was used to research the compression damage of concrete. Black and white paints were sprayed on the specimen’s surface to artificially make random speckles. Images during loading process were captured by high resolution CMOS. An open 2D-DIC system developed by MATLAB and C++ was used to get full-field displacement of the specimen surface. The results show that the displacement catastrophes always appear before compression failure, which can be inspected by DIC method. Effective corr-coef cutoff have to be set to remove those invalid points with low-level of correlation so that we can eventually get the real shape, length as well as the width of the crack on the specimen surface. This result can be useful on other studies on damage principle of concrete like finite-element analysis.

Abstract:The software ,SAP2000,is used for the pushover analysis of three shear wall components which is form three finished experiments using layered shell element model based on effect of different age, and after comparing the the skeleton curves of the hysteresis curves obtained from the finished experiments with the PUSHOVER curves, We found that these two curves are similar. Then we analyzed the nonlinear dynamic time history of a 12 story shear wall structure with sap2000 in the same way above and analyzed different indicators of the structure model, figured out that the behavior of the structure model is matched with the real structure.The final conclusion is that The numerical simulation of the RC shear wall structure is feasible by using the layered shell element method based on material degradation and this method can also provide certain guidance to the practical engineering.

Abstract:The simulations of the nonlinear response of quasi-static tests of HSC shear wall specimens with different shear span ratios under reversed cyclic type loading was carried out. The finite element model based on Modified Compression Field Theory (MCFT) and Disturbed Stress Field Model (DSFM), respectively, is used for HSC shear wall specimens. The hysteretic curves and skeleton curves are compared with the experimental results. The results shows that the simulative hysteretic curves, failure modes and cracking patterns of the finite element models, based on DSFM, is more consistent with the experiment results compared with MCFT. This fully shows that the finite element models, based on DSFM, could simulate the hysteretic Characteristics of HSC shear wall specimens well.

Abstract:To accelerate the process of building industrialization, currently, precast reinforced concrete shear wall structure has been a heated research topic in China. This paper presents a general review of the following aspects of precast reinforced concrete shear walls: 1) performance of precast concrete shear wall structures in previous earthquakes; 2) state of the seismic behavior of precast large panel structures, un-bonded post-tensioned precast concrete wall structures, superimposed slab shear wall structures; 3) state of the horizontal connection, vertical connection and reinforcement connection of precast concrete shear walls. A brief introduction is also included about seismic design code of precast shear wall structures. Suggestions and conclusions are also put forward for the further study.

Abstract:Recently, the coupled wall systems are employedwidely result fromthe development of high-rise buildings. Owing to the combination of the advantages of steel and concrete, the seismic performance of the hybrid coupled walls (HCWs) have been significantly improved compared to the traditional coupled walls, and ,hence,the HCWs have been the research focus. Based onthe extensive experimental and analytical research on HCW systems over the past several decades,the development of HCW(including the steel coupling beam, replaceable coupling beam and steel truss coupling beam) is reviewedand theprospect for further study and design on the HCWs is presented.

Abstract:The existing insulation system technology is relatively mature in China. The popular external wall insulation systems are: exterior insulation system, internal insulation system, and the interlayer insulation system. And the outer insulation system is used most frequently, but the drawback is that it lead to relatively complicated construction process, and it is not conducive to construction management. This article first analyzes the current external wall insulation system. Then in order to further improve the efficiency of construction, this article proposed two integrated pre-cast (PC) exterior wall. One is a combination with the self-insulation system and another is with external insulation. It not only will be energy-saving but will improve construction efficiency.

Abstract:With the rise of the architectural industrialization, the prefabricated structure column is getting more and more attention. In order to verify the performance of the prefabricated constructional column confining masonry structure and the effect of improved design methods,this paperanalysed the static dynamic elastic-plastic seismic performance on the two groups of masonry structures in the case of the earthquake of 6 and 7 degree.comparing the deformation energy, layer displacement, inter story drift angle and the structure energy consumption of the cast-in-situ structural column, prefabricated structural column, and encrypted prefabricated structural column.The analysis shows that the improved scheme has not changed the rigidity of the original prefabricated structural columns obviously, but improved the energy dissipation capacity greatly and approached the seismic performance of the precast structure, the improved scheme can be used as the design rule of the prefabricated structural columns to constrain the masonry structure.

Abstract:In structure design, Anti-seismic design is an indispensable step. This paper takes China Comic and Animation Museum as an example, First floor adopts steel mesh tube-steel frame-supporting(steel plate shear wall)structure. Second floor and above adopt the steel frame-support (steel plate shear wall) + cross layer truss structure. Existing structure Anti-seismic theory and finite element analysis were used for the structure of the dynamic and static elastoplastic analysis. Analysis shows that the structure is in a good lateral stiffness and has better seismic performance.

Abstract:We study the ratio of different compressive strength and deformation under load and the relationship of each specimen through the compression test of the specimens of cementitious composite materia tube.We also study relations between different fiber content and compressive strength,and deformation failure regularity and energy absorption characteristics under lateral flattened and choose the most suitable fiber type and dosage. The results showed that: a reasonable mix and fiber content make the pipe of super toughness cementitious composite material have a high compressive strength and good energy absorption effect.

Abstract:Stainless steel is a material with corrosion resistance and high temperature resistance, it is a kind of good environmental protection building material. Existing researches show that stainless steel has a better performance than low carbon steel in high temperature resistance. Through studying mechanics property for stainless steel at elevated temperatures obtained by scholars, to evaluate the deficiencies of the existing specifications. Reviewing the researches in strain-stress curves and constitutive relations models home and abroad, after introducing, analyzing, summing up the advantages and disadvantages of each model. Three-step stress-strain model proposed by Quach is applicable for the tensile and compressive conditions, can be directly used in current structural design specification in room temperature. The stress-strain model at elevated temperatures proposed by Gardner has a strong applicability, but it is not complete and still need to further expand.

Abstract:Bridge cracks seriously affect the structural safety and durability, which don’t conform to the concepts of "green construction" and "sustainable development". In consideration of the cracks of a large beam bridge pier, an accident investigation is performed to provide the basis for the reconditioning works and to promote the standardization of the bridge construction. Taking into account these temporary connection bolts which had not been dismantled in time, their constraint effect on bearing horizontal shear deformation was calculated by ABAQUS code, then, the bearing reaction forces at pier top on three kinds of most unfavorable conditions were figured out by Midas code. After that, the pier stress were analyzed by ANSYS code. It showed that, in the case of the four temporary connection bolts are all destroyed at the same time, the maximum principal tensile stress of the three kinds of most unfavorable conditions is just 0.08 MPa, which is far from allowable value 0.73 MPa.Therefore, the pier cracks were not attributed to the fact that these temporary connection bolts had not been removed in time, others should be taken account into the investigation.

Abstract:Long-term deflection monitoring data of the Gaojia Garden Bridge is comprehensively investigated to master change laws of bridge deflection with temperature and vehicle load, and to primarily determine variation of deflection. Based on the time-series analysis and wavelet analysis of temperature data, vehicle flow and heavy trucks data from the condition supervision system, this paper studies the correlation between defection variation at mid-span with temperature and vehicle load. As shown in the final results, there is an ideal relativity between defection at mid-span andtemperature,while deflection fluctuation is mainly related to heavy trucks, which will offer effective technical support for the Gaojia Garden Bridge as well as resembling continuous rigid-frame bridge condition assessment.

Abstract:To ensure the effectiveness and timeliness of the bridge health monitoring system and provide the basis for the maintenance and reinforcement of bridge managers, based on the finite element analysis and sensor monitoring data the structural health monitoring system of the Eight one bridge in Nanchang was taken as the research object and a structural early warning system for multi index parallel warning was proposed. The early warning indices, thresholds and workflow were elaborated and the warning indices, such as cable force, The key section of stress and vertical deformation, fatigue vehicle loads, and the change rates of natural frequencies were particularly calculated and analysed. The results of the research demonstrate that under the current load circumstances, the results of these warning indices are normal and the components can meet the operation requirements.

Abstract:Construction control is an important embodiment of the modernization of the construction industry. In order to ensure the continuous rigid frame bridge require the design of actual state, bridge construction control is an essential measure and step. This paper takes a cross-sea bridge as the basis, using software simulation, exploring the long span continuous rigid frame bridge displacement and stress in various stages of construction, analyzing the parameter sensitivity, supporting for the modernization of the construction industry. Respectively this paper analyzes changing trend and the influence degree of deflection and stress under the biggest cantilever stage and service stage with the change of density of concrete, prestressing parameter and temperature. The results show that local temperature has the biggest influence on deflection under the maximum cantilever stage, and the maximum variation can reach 60mm. Density of concrete has significant effect on deflection, which peak reach between the 10 mm~25 mm under two states.

Abstract:With the development of economy,fasteners template scaffold are more and more widely used. Duing to the construction, defects, however,right-angle fastener of fasteners template scaffold can not meet the corresponding requirement specification ,which lead more and more safety accidents. Right-angle namely called Semi-rigid nodesis between that of rigid connection and hingedconnection. Existing data show that the value of semi-rigid nodes have a certain influence on the ultimate bearing capacity.Using eigenvalue buckling analysis and numerical analysis methods, this paper explorefurther the relationship between semi-rigid nodes and ultimate bearing capacity. Studies have shown that the initial rotational stiffness has a very significant effect on bearing capacity when tightening torque is small ,and moreover,ultimate bearing capacity of the fasteners template scaffold increases non-linearly with the increase of semi-rigid.

Abstract:In order to deal with frequent collapse accident of the template scaffold, response surface method is employed to conduct sensitivity analysis for initial defects including material defects, manufacturing error and mis-operation. The accurate finite element model of typical template scaffold is mode and the ultimate bearing capacity is analyzed with different thickness of tube wall, elasticity modulus and initial eccentricity. The sensitive amplitude of the ultimate bearing capacity to different initial defects is obtained and the result can provide technical support for effectively controlling collapse accident of template scaffold in structural constructions.

Abstract:Prefabricated staircases are one of the most important elements of industrial buildings. The complete construction procedures aredemonstrated, including the manufacture of the component, the transportation, the installation in the field, and the concrete placing of stair landing. The prefabricated staircase components are industrially manufactured in the plants, and are transported to the field by the flat-bed trailer. The waist slab and the steps beam are connected by sliding support made by tetrafluoroethylene plate, and are installed with extruded polystyrene between the descending ladder and in the expand joint between steps beam. Expansive concrete is placed to form a stair slat. By further comprehensive consideration, it is evident that prefabricated monolithic staircases are suitable for large-scale application.

Abstract:With the development of construction technology in China, there are more super high-rise buildings constructing or being constructing in not only first-tier cities but second-tier or third-tier cities. To build a green super high-rise building, it is necessary to use key technology of design and operation reasonably, and know green construction technology in underground and superstructure construction which is based on the current criterions and guides, and put forward the idea of application of clean, renewable energy in the construction in China.

Abstract:Steel reinforced concrete supporting pile (referred to stiff pile) is a kind of concrete pile configured with steel. Rotary drilling pile is honored as a Green Construction Technology. The organic combination of the two, not only greatly improves the efficiency of construction, but also strengthens the pile bearing capacity for the shape steel encased with. This way of construction, ensuring foundation pit stability in excavation, conforms to the green environmental protection and industrialization at the same time. Quasi-static tests were performed on 3 specimens to study the structural behavior of reinforced concrete pile with infill shape steel. Overall behaviors of the SRCSP such as bearing capacity, deformation capacity and ductility were inspected. The finite element analysis was conducted to simulate the load-deformation curves of the three specimens. The simulated and experimental results agree very well. Then this paper briefly describes the combined effect and construction process of the combination of SRCSP and rotating drill construction process. By analyzing the construction technology and application, good social and economic applicability is concluded, so the construction methods can be used in the corresponding foundation pit project for reference.

Abstract:The core technology in pile foundation underpinning is the combination of old and new concrete surface connection method and performance. Based on the background of certain city tunnel crossing the viaduct pile foundation underpinning the engineering , this paper proposes a new mode of connection: rough surface+ planting bar drilling (adhesives ) + Spray interface adhesive. The experimental designed three specimens, the boundary surface within the scope of basic guarantee every 30 cm×30 cm into a steel bar, and part of the beam specimen strengthening, has carried on the static loading test. Conclusion: the combined surface connection way has higher shear bearing capacity of up to9.208×10 3 kN/m 2; And improving the new casting beam of stirrup reinforcement ratio has a larger effect to improve the interface shear bearing capacity; Planting bar in the old and new combination has played a major role in surface shear capacity, the border between old and new concrete surface, namely in the middle of the bar has the greater force; Planting bar located in both ends has the smaller force. Results show that the connection form construction by rough surface+ planting bar drilling (adhesives) + Spray interface adhesive is safe and reliable using in large axial force of pile foundation underpinning.

Abstract:Tunnel under the Xi’an Subway Line crosses the main bridge pile of Xianyang International Airport, and thus active underpinning pile foundation treatment has to be used.Based on the combination of design engineering, we made underpinning beam (Beam-Pier-cap-pile connector) 1∶6 overall model，selected connecting surface of the joint type form of chiseling + drill anchorage + interface gel + prestressed,and underpinned the structure of the force performance and reliability of the analysis and demonstration.The results show that underpinning beam strength and stiffness can meet the requirements, the limit load of the specimen on its corresponding original underpinning girder is up to 9 900 t, and underpinning beam has a high load carrying capacity, ductility of the specimen is good and safe.Deformation coordination is under the upper large axial force bridge load,and the connection of chiseling + drill anchorage + interface gel + prestressed has the desired effect.

Abstract:In slope engineering, construction and building of vertical high slope is a difficult construction, along with the development of economy, more and more high slope construction area. Coastal city of Dalian Business Economics Training Center and surrounding land south of the retaining wall reconstruction project engineering，this project is an earth and strongly weathered rock vertical high slope，the slope of the maximum depth of 11.2 m，paragraph using situ reinforced concrete retaining wall construction. The process of excavation and support occurred one collapse accident，this article discusses the specific treatment measures，and with a specific project as an example，proposed the new construction technology top-down method assembly type anchor retaining wall, In the assembly of different kinds of block as a retaining wall, and set the pre-stressed reinforcement, the top-down construction gradually from top to bottom, bottom retaining wall and beam integrally using cast-in-place reinforced concrete, improve the overall stability. The method to reduce the project risk, accelerate the construction speed, to erect high slope construction provides a reference method.

Abstract:Taknging the deep foundation pit engineering of Ma-tan Station of Lanzhou Subway 1

Abstract:The mechanism and the phenomenon of the ice shedding and wind induced vibration of the multi- span transmission lines system including the insulator, the lead wire and other parts are different from the single span. In this paper, the vibration analysis model of a multi-span transmission line is established based on the large finite element software ANSYS. The vibration analysis of the multi-span transmission line shows that the amplitude of the displacement of the ice shedding is increased with the increase of the number of spans from one span to five spans. The axial force of the resistance insulator in the case of resistance-straight- resistance is the maximum, which is increased with the increase of the span. The amplitude of the axial force of the suspension insulator decreases with the increase of the span, but the axial force after ice shedding increases with the increase of the span. The tensile force of the conductor in the ice shedding span is also the largest in the resistance-straight- resistance case, while the axial force after ice shedding increases is the largest in the case of resistance-straight-straight-straight-straight-resistance. The tension of the edge of the edge is decreased with the increase of the cross number.

Abstract:The numerical simulation on wind tunnel test of the iced transmission line and parameters analysis is the major means of obtaining aerodynamic parameters. The numerical simulation of the aerodynamic parameters of iced transmission line was carried out. The geometry modeling, meshing, selection of boundary conditions, turbulence model selection, and so on, were discussed to set the solving parameter. The effect of first layer thickness, layer number, thickness, shape, and encryption stripe of the encrypted area on the result of calculation was clarified. Then, the suitable grid model was built. The analysis of the k-ε, the k - ω, the Realizable k -ε, the Reynolds stress and the SST k -ω turbulence model show that the k - ω is more sensitive to parameters although it can be well used to simulated the aerodynamic characteristics. The k -ε turbulence model is the most reasonable model to simulate aerodynamic parameters of iced transmission line.

Abstract:There are severe ice shedding vibration problems in the 500 kV AC transmission line located in Northeast Yunnan, which is in the high altitude, heavy ice conditions. In this paper, a finite element model considering the coupling effect of transmission tower line system is established, and the vibration analysis of the system is carried out by using the modified density method. The results show that the maximum tension and displacement of vibration of the tower line system is smaller than that of the line. The tower will transfer a part of the energy to the conductor and ground wire without the ice shedding. According to the characteristics of vibration mode, the semi-span ice shedding may effectively increase the vibration displacement of the conductor to some extent, but has little effect on the tension of the conductor.

Abstract:This paper develops an easy-maintenance transmission steel pole structure with a self-centering feature by introducing prestressing technology and a specified device. Under extreme loading conditions, the structure fails at a specified location so to protect other components. Additionally, the specified device is designed to be replaced conveniently after it is damaged, so it entitles the structure the feature of easy-to-repair. The new design contributes to green construction and sustainable development by reducing the entire structural damages of the power transmission lines. In this paper, a flow chart for this newly easy-maintenance transmission steel pole structure is proposed. Structural behaviors of this new design are studied through theoretical analyses and pushover testing.

Abstract:Based on the closest packing theory, combining Funk-Dinger model with Microsoft Excel Solver Tool determines the weight of cementitious materials which is used to develop the UHPFRCC. Using limestone to improve the flowability can determine the final mix proportion. Experimental results show that the maximum density theoretical model based on the Dinger-Funk equation can be applied to the mix proportion design of UHPFRCC; Hybrid fibers can increase the compressive of UHPFRCC and decrease flexural strength; compared with the UHPFRCC in corporation of 2% steel fibers, addition of synthetic fibers reduces the compressive strength and flexural strength of UHPFRCC.

Abstract:With the economic development and urbanization in China, the demand on improvement of indoor thermal environment has been increasing rapidly. Regarding the impact of Indoor setting temperature on energy consumption of heating and cooling, DeST-h is adopted for the investigation of some operation modes for some selected cities in different climate zones. It is found that 40%~60% reduction could be obtained with appropriate modes change. And non-heating-and-cooling period could be extend with appropriate indoor temperature setting, which could be found 7% reduction in energy consumption for 1 ℃ change.

Abstract:The residents’ control on indoor thermal conditions was studied with a combination of onsite survey and field measurements in rural and urban Chonqing. Air conditioning was widely adopted by urban residents and frequently used in summer. For rural households, electric fans were mostly used with window open and air conditioning was mainly used in nighttime. The income level of urban residents had more significant impact on air conditioner ownership and electricity consumption of urban households compared with rural households.

Abstract:Taking a green building project in Qingdao as an example, this paper analyzes the influence of outdoor wind environment on people's life and environment. Through access to relevant parameters in Qingdao area of typical meteorological year identified three kinds of simulation conditions, according to the k-ε turbulence model and the control equation and local terrain conditions, basic wind speed and seat height simulated the position of average wind speed and pressure difference. Through the analysis of the wind environment index, the conclusion is that the wind speed of the 1.5m height in the two seasons of winter and summer is lower than 5 m/s, the air flow is smooth, and for the high wind speed, the wind speed of the region can be reduced by planting vegetation in this region. Building surface pressure difference is less than 5Pa, is conducive to the summer ventilation and meet the requirements of winter wind. The project reached the standard of green building evaluation, and can provide a reference for the construction of green building design in the future.

Abstract:With the increasing of building energy consumption and the growing of energy crisis, building energy conservation has become particularly urgent. Exterior wall is the most important part of the enclosure structure in energy saving. Foam concrete is widely used in construction engineering practice because of its good thermal insulation properties. But its use in building facades is still in the exploratory stage. This paper introduces the structure and performance of new foam concrete external wall. Experiments on heat preservation and heat insulation of outside wall insulation, solid brick walls and insulation properties are analyzed. Through the analysis, it is found that thermal insulation performance of foam concrete external wall is far better than the other two walls. In the condition of open air conditioning, the inner surface of the heat value is only 30.4% of external wall insulation with significant energy savings. And foam concrete external wall is more lightweight, its mass is only 57.1% of external wall insulation.

Abstract:Adopted method of laboratory test to study basic mechanical properties of GFRP, based on the background of the construction of Beijing Metro Line 16 bid package 03, in the course of the origin and reception of the shield, by means of replacing reinforcing bars to GFRP bars, the shield cuts the retaining structure directly ,dispensing with the process of manual cuttingto achieve accessibly origin and reception of the shield. From four aspects of the safety quality, economic benefits, ecological civilization, technological progress,compared with the traditional method of origin and reception methods the new technology is analyzed to illustrate the social benefits of it.

Abstract:It has been demonstrated that the plant's color, smell in gardens as well as horticultural activities in the space created by plants play a significant positive role in the non-medical rehabilitation. Therefore, the healing garden designed for horticultural therapy has become the hot spot of modern landscape design. A number of studies have been carried out in this aspect both in China and abroad. This paper will compare different types of domestic and foreign cases of healing landscape. Corresponding analysis, summary, and revelations are obtained. Investigations on how to achieve the ideal effect of rehabilitation through the construction of plant landscape will also be carried out. These results can be used as references for the domestic healing garden practice, which is still in the developing stage.