• Volume 37,Issue Z1,2015 Table of Contents
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    • A new method of using Google earth and BIM on road design and field investigation

      2015, 37(Z1):1-4.

      Abstract (1368) HTML (0) PDF 5.73 M (1021) Comment (0) Favorites

      Abstract:Chengta series software is based on Google earth COM API and latest BIM methodology,GIS technology with satellite picture, intelligent mobile phone, GPS, directly using Google earth on alignment design, elevation extraction, SRTM DEM download, CAD contour line drawing, satellite imaging downloading, existing ground profile creation, AutoCAD, KML (KMZ), import and export GPS or Excel file to Google earth, overlap the contour line with satellite images, etc. It can dramatically improve the work efficiency.

    • Shenyang Qing Dynasty Heritage Area Traffic Organization

      2015, 37(Z1):5-9.

      Abstract (839) HTML (0) PDF 4.31 M (959) Comment (0) Favorites

      Abstract:With the emphasis on the protection of historical heritage in Liaoning Province, the whole mining and protection of historical heritage area are paid more attention to. So it puts forward higher requirements to its traffic organization. And also it will be a test of the heritage city. In order to satisfy the development of the heritage area in the traffic aspect, based on the analysis of Shenyang current traffic situation, this paper researched on spatial arrangement and transportation of heritage area. According to the characteristics of Shenyang Imperial Palace, Fuling tomb and other 11 Qing dynasty heritages, the paper plans Shenyang heritage area traffic organization in the aspect of infrastructure, road network selection and line arrangements. Also it suggests ways to ensure the historical heritage city’s traffic demands and make the whole city traffic layout reasonable, open and orderly.

    • Analysis and research of no-shaft ferris wheel installation construction technology of simulation

      2015, 37(Z1):10-14.

      Abstract (1078) HTML (0) PDF 6.83 M (914) Comment (0) Favorites

      Abstract:Without shaft wheel installation process, the displacement relationship between bar to the quality of the whole project, it throughout the construction period and operation period, the paper mainly discusses the countless shaft simulation method in the process of installation construction technology of the no-shaft ferris wheel, using numerical analysis software MIDAS, to wei-fang whitewater river bridge and the no-shaft ferris wheel engineering simulation analysis, the numerical calculation results show that the height of 138 m without shaft wheel is divided into four parts installation, lower installation uses the ground support, through the heavy crane car component unit installation, USES the lower structure to pass the structure of central pillar support, cooperate with the tower crane and scaffolding, upper installed through the lattice column support, to complete supporting system and operating scaffolding tower, the no-shaft ferris wheel upper nodes maximum displacement of 258 mm, lower part of the minimum displacement of the 54 mm, node displacement less than 1/500 h, the biggest meet construction specification requirements; Provide theoretical numerical reference for similar projects.

    • A report on the fire safety of the lester school and henry lester institute of technical education

      2015, 37(Z1):15-22.

      Abstract (1140) HTML (0) PDF 19.00 M (843) Comment (0) Favorites

      Abstract:The paper introduces the history of the Lester School and Henry Lester Institute of Technical Education. Based on investigation of the site, the paper analyzes its original fire safety and the fire-fighting measures after its transforming into Shanghai Seamen’s Hospital. Then the paper gives the introduction of the reform of the fire-fighting equipment in 2008 and 2014, and raises the existing fire safety hazard. A conclusion is given in the end that though the fire-fighting equipment has been improved, management mechanism should be strengthened as well, and make improvement in the unsafety part of the historical building.

    • Application of high performance concrete and coating of protective paint on a port in zhejiang province

      2015, 37(Z1):23-27.

      Abstract (893) HTML (0) PDF 4.57 M (784) Comment (0) Favorites

      Abstract:The durability of Lizhushan Port in Shengsi County, Zhejiang Province was studied. High performance concrete (HC) was partly applied in the port with protective paint was coated on it. The chloride diffusion coefficient of both HC and original concrete (OC) was tested and compared. The cost of the application of HC and the protective paint was calculated. The results show that the application of HC could reduce the cost slightly, and the chloride diffusion coefficient of HC was smaller than that of OC. The coating of protective paint could increase the cost significantly. A suggestion was made that the protective paint may be coated on key parts of the port.

    • Study on Numerical Simulation of Thermal Environment in an Air-conditioned Office

      2015, 37(Z1):28-31.

      Abstract (884) HTML (0) PDF 4.06 M (1185) Comment (0) Favorites

      Abstract:We used Monte Carlo method and considered the additional heat generated by solar radiation to establish the CFD models of the Office, which based on Reynolds-averaged equations and two equation k-εturbulence. It studied the velocity distribution, temperature fields, PMV value and PM2.5 concentration fields in the Office. Calculation results and experimental data show that: the simulation model can accurately calculate the indoor thermal environment. The diffuser is not reasonable and the wind speed distribution is uneven. They cause the PMV value is big and we will feel hot. So it needs to further optimize the wind outlet or opening size. The average indoor temperature is at 26.15 degrees. It is uniform no more than plus or minus 2 degrees.But the heat emitted from the computer, human body and fluorescent lamps have influenced the temperature field distribution nearby. The content of PM2.5 is good and the fine particles on the surface of the indoor article have a certain influence on the concentration of PM2.5.

    • Simulation analysis and evaluation of passive solar house based on energyplus

      2015, 37(Z1):32-35.

      Abstract (1088) HTML (0) PDF 3.33 M (797) Comment (0) Favorites

      Abstract:In this paper, the station apartment is transformed into the sunspaces-attaching passive solar house in the Inner Mongolia region. Through the calculation of dynamic simulation software, we evaluate and analyze the result of the simulation, as well as the economic calculation of the attached sunspace. Through the analysis found that the sunspaces-attaching passive solar house only need 15.93 W/m 2 to meet heating demand. The results show the building for attached sunspace is completely feasible in the solar-rich northern region.

    • Rainwater complex utilization study of teachers’ apartment in north colleges

      2015, 37(Z1):36-40.

      Abstract (760) HTML (0) PDF 3.53 M (966) Comment (0) Favorites

      Abstract:The rainwater in Liaoning Technical University Yulong school teachers’ apartment was selected as the research object. By calculating the rainwater volume in the position of the roofing, the road and the grassland and the monitoring result of water quality in different area, we get the water runoff characteristics and water quality characteristics in the whole teachers’ apartment. Associated the comprehensive utilization way of rainwater in this apartment, we work out the rainwater harvesting scope and method and conduct a coagulation test based on the above. Select PAC as coagulant and the dosage is 40mg/L. Stir with medium speed 150r/min and last 3min or low speed 50r/min 15min, then let stand for 15min. The result show that under above condition the removal rate of rainwater turbidity is 91.3%, the removal rate of COD is 61.2% and the removal rate of NH3-N is 29.3%. The reference treatment process is given according to the above result and the water quality meets the water quality standard of the city. The results could provide valuable reference for comprehensive utilization of rainwater in the north water shortage city.

    • A review of the sludge conditioning technology

      2015, 37(Z1):41-45.

      Abstract (1160) HTML (0) PDF 3.51 M (1541) Comment (0) Favorites

      Abstract:This paper illustrates the necessity of sludge conditioning and its function and introduces the current main sludge conditioning technologies, including physical conditioning, chemical conditioning, microbiological conditioning and united conditioning. This paper discusses the conditioning theory, the research progress, their advantages and disadvantages. At last, the paper prospects the development direction of sludge conditioning technologies for the future.

    • Research and development trends on Organic polymer Flocculent to sludge dewatering

      2015, 37(Z1):46-50.

      Abstract (1033) HTML (0) PDF 3.51 M (1199) Comment (0) Favorites

      Abstract:This paper reviewed organic polymer sludge dewatering flocculant which was researched and used extensively. Organic polymer sludge dewatering flocculant can be divided into polymeric and natural modified according to synthesis method. Polymeric flocculant can be divided into cationic, anionic, nonionic and amphoteric. Natural modified flocculant can be divided into carbohydrates and Chitosan. Meanwhile, the paper elaborated and generalized the flocculation mechanism of organic polymer sludge dewatering flocculant. Also, the paper discoursed the advantages, disadvantages and application Status of these six flocculants. Finally, the prospects of sludge dewatering polymer flocculant were prospected.

    • Energy consumption simulation and measurement analysis for heating energy saving reconstruction of one teaching building in Beijing

      2015, 37(Z1):51-56.

      Abstract (923) HTML (0) PDF 12.19 M (909) Comment (0) Favorites

      Abstract:There is great energy saving space for buildings of colleges and universities. The heating energy consumption simulation was made using the software TRANSYS-17 for a teaching building of one college in Beijing. The energy saving rate of its heating energy saving reconstruction plan was calculated and the room temperature of two successive heating period were measured and compared. From simulation results, we can found that the heating energy saving amount is 351765282 kJ and the energy saving rate is 19.78% after adding exterior wall insulation. From room temperature measurement, we can found that the room temperature increase 1~3℃ after adding exterior wall insulation when outdoor temperature are basically the same. If the time control heating can be further made in this teaching building, that is to say in the daytime (7:00~22:00) the heating temperature is set at 16~18℃, in the nighttime (22:00~7:00) and in winter holiday it is set at 5℃, the heating energy saving amount will be up to 614256842 kJ and the energy saving rate will be up to 34.55%.

    • A vehicle-bridge coupling vibration analysis on bridge girders by simple support design followed by structural continuous design

      2015, 37(Z1):57-61.

      Abstract (987) HTML (0) PDF 3.07 M (834) Comment (0) Favorites

      Abstract:The excessive amount of creeping camber of a simply-supported continuous bridge generated by the over pre-stressed on simply-supported beam, leads to the specific wavy on bridge line. In this paper, a vehicle model on the scale of 1/4 and the half-sine curve are used to simulate the vertical vibration. Then, the Newmark is adopted for calculating the vehicle-bridge interaction. It is found that if the girder camber is not well controlled, not only the safety of bridge construction but also the riding comfort of traveling vehicle will be influenced.

    • Review of studies on improvement of explicit numerical integration methods for pseudo-dynamic testing

      2015, 37(Z1):62-66.

      Abstract (801) HTML (0) PDF 3.31 M (1072) Comment (0) Favorites

      Abstract:Numerical integration methods of traditional pseudo-dynamic test are mainly divided into two kinds of explicit and implicit algorithms. Previous studies have shown that explicit algorithm is more suitable for pseudo-dynamic testing than the implicit method. However, explicit algorithm itself has many inherent defects. Also, it is necessary to make improvements on the algorithm since the requirements of modern teaching and research on the precision of pseudo dynamic tests results are more and more higher. Details of the progress and current status of the research by domestic and foreign scholars on explicit algorithm improvements are demonstrated here. And through discussing and summarizing several major aspects of the improvements of explicit algorithm, several issues which need to be resolved are pointed out, and so the reasonable future research direction and goals are also made.

    • The impact of the extensive green roof on the build environment in hot-summer and cold-winter moist climate

      2015, 37(Z1):67-71.

      Abstract (825) HTML (0) PDF 6.27 M (1055) Comment (0) Favorites

      Abstract:Green roofing is a passive building technology. By using additional green roof layers, it improves the thermal performance inside the building, it also increases the green area of the city of the building roof layer outside the building. These dual effects can reduce energy consumption inside the building, and relieve urban heat island effect outside the building. In the middle and lower reaches of Yangtze River, weather in winter and summer go to extremes and is always humid and rainy all year round. The impact of extensive green roof on the building environment was verified by experimental monitoring and energy simulation. To prove the green roof effect on energy consumption of building, the temperature of a model office building in Nanjing City was monitored, temperature distribution in green roof and general roof in real-time were recorded,the result shows that the average temperature is 16 ℃ lower on the green roof . Energyplus simulation software was used to simulate the energy in the same building, the energy consume was reduced 2.6 kWh/m 2 totally when the roof have a insulation layer, and it can inhanced to 14.1 kWh/m 2 when the roof have no insulation layer. Airpak simulation software was used to simulate the effect on the environment in a residential area in Shanghai after the application of green roofs, the result shows the temperature was 0.2 ℃ than before.

    • Preliminary Analysis on Survey and Countermeasuresof Quality Security for Rural Residences

      2015, 37(Z1):72-77.

      Abstract (1048) HTML (0) PDF 5.33 M (987) Comment (0) Favorites

      Abstract:According to the survey on rural residence security in Chengdu and Zigong city, Sichuan province, the quality security of rural residence was investigated and the countermeasures were discussed. The results show that rural residence is inferior in security, due to the deficiency of mandatory quality standard, wholesome supervisory system, security consciousness, and so on. In view of the above, we put forward five countermeasures, i.e. integrating rural residence construction and new rural planning; extending applicative residence design; commercializing rural building project; informationizing basic data; and implementing the responsibility system for quality security. The countermeasures are expected to minimize rural residence quality accident.

    • Temperature field simulation of steel components under natural fire

      2015, 37(Z1):78-83.

      Abstract (1048) HTML (0) PDF 8.37 M (1398) Comment (0) Favorites

      Abstract:Based on the fire test of an existing frame, a finite element model of the testing frame was established. By comparison with the test results, better result of temperature-field simulation was obtained. In addition, considering the systemic design of the actual needs and exploring the effects of distinctive factors on the development of fire, the use of ABAQUS was to simulate the distribution of temperature-field under distinct fire models with varieties of parametric. The results show that: the finite-element software ABAQUS can obtain more precise temperature distribution; considering various random parameters is more conducive to the constructional steel fire engineering.

    • Application Status of Spring Vibration Isolation Technology In Thermal Power Plant

      2015, 37(Z1):84-88.

      Abstract (993) HTML (0) PDF 4.07 M (1228) Comment (0) Favorites

      Abstract:Spring vibration isolation can reduce the vibration noise of power equipment in thermal power plant, which is a kind of vibration isolation technology has the development potential of green and energy saving.First summarizes the main mechanical properties and characteristics of spring vibration isolation, and the power plants such as steam-turbine generator, coal breaker, steam feed water pump group as an example, then introduces its application in thermal power plant, finally points out the problems in the application of problem, and to be solved urgently in order to provide the reference for the application of spring vibration isolation technology in thermal power plants later.

    • Analysis about applicability of effective moisture penetration (EMPD) model to simulate hygrothermal transfer in buildings

      2015, 37(Z1):89-95.

      Abstract (1009) HTML (0) PDF 8.48 M (865) Comment (0) Favorites

      Abstract:Three most commonly used model are introduced: effective moisture penetration depth (EMPD) model; effective capacitance (EC) model and combined heat and moisture transfer (HAMT) model. The formulation foundation as well as strength and weakness of these three model are analyzed. Taking a small office building in Nanjing for example, the accuracy of EMPD is examined while predicting the indoor hygrothermal environment and yearly energy consumption based on the EnergyPlus platform. Reasons that account for the errors comparing with EC and HAMT are presented. Results show that among three models EMPD shows more similarities to HAMT than EC in terms of moisture and energy prediction with errors less than 5% and 8% respectively. Besides, EMPD runs several orders of magnitude more quickly than HAMT. So EMPD can be chosen to simulate buildings when taking both accuracy and speed into consideration. Some suggestions are proposed to further modify EMPD for a better accuracy.

    • Analyses of the problems and countermeasures about the current green building development in China

      2015, 37(Z1):96-98.

      Abstract (875) HTML (0) PDF 2.08 M (1017) Comment (0) Favorites

      Abstract:This article introduced the development situation of green building. Firstly, the main problems appearing in the development of green building in China was analyzed and summarized. The results suggest that the security system and policy incentives are important factors, and these two aspects are complementary relationship with the limitations of philosophy consciousness, technical standards and the industrial chain. Secondly, several countermesures of establishing green building was discussed. Finally, this article puts forward some suggestions such as implementing the concept of green building, improvement of regulations and technical system, establishing organization security system, strengthening policy incentives and fostering the subject of market.

    • Community Renovation Suitable for the Elderly with Modularized Green House Reconstruction of Chongqing Urban Area Old Communities

      2015, 37(Z1):106-112.

      Abstract (1225) HTML (0) PDF 9.44 M (969) Comment (0) Favorites

      Abstract:In recent years, Chinese society is faced with a serious aging problem and the lack of pension resources. It is expected that, in 2020,the population of aged beyond 60 years old will reach 240 million, accounting for the total population was 17.71%.The group of the old are centralized distributed in old buildings of 1970s or 1980s,which are numerous nationwide. Housing in Chongqing is widely distributed in the main district in 1980s,and now, it has the stock of about 400 million square meters. Based on the surveys and researches on the life’s quality of the old people who live in the old buildings, and combined with the residential characteristics of 1970s or 1980s,we accomplished a modular-building program used to make old people’s life easier. The program includes 4 core modules-the transformation of performance, venues, comfort, safety, moreover, the program has the introduction of green building technology. Through the review literature and the energy simulation, it shows that the old buildings in terms of comfort, convenience degree and so on will have greatly improved after the transformation according to the program, and the maximum annual energy consumption and the annual total energy consumption will be decreased.

    • Research Progress of Bridge Structure-borne Noise of Rail Transit

      2015, 37(Z1):113-119.

      Abstract (1055) HTML (0) PDF 4.93 M (1263) Comment (0) Favorites

      Abstract:The generating mechanism of bridge structure-borne noise, the spectral characteristics of structure noise and the relation between structure noise and train speed and the influence factors of bridge radiation efficiency are introduced. In the paper, plural calculation methods and the present progress are briefly introduced.The defects of each method are pointed out. Strategies for reducing the bridge structure noise are include vibration reduction/isolation, vibration transmission/limitation and energy attenuation. The problems of reducing the structure-borne noise are pointed out for further studies.

    • Analysis of geothermal resources and air-conditioning scheme of a comprehensive teaching building and its supporting facilities in Beijing

      2015, 37(Z1):120-123.

      Abstract (774) HTML (0) PDF 4.01 M (806) Comment (0) Favorites

      Abstract:In this paper, the analysis of geothermal resources and air-conditioning scheme of a comprehensive teaching building and its supporting facilities in Beijing has been conducted. Taking advantages of the heat source and rational use of energy and according to the characters of architecture space, comprehensive comparison has been made to reach the requirements of environment friendly, energy conservation and emission reduction and sustainable development.

    • Logistics center location decision analysis research

      2015, 37(Z1):124-128.

      Abstract (1305) HTML (0) PDF 4.81 M (902) Comment (0) Favorites

      Abstract:At present, the logistics has become a new economic hot spot as “the third profit source”, which is paid more and more attention by people. With the rapid development of logistics industry, however, there is a common problem to be considered: How to choose logistics center location reasonably Logistics center plays a very important role in the logistics system operation, it is a bridge connects logistics upstream supplier and downstream demand. After having a know of the importance of logistics center, from the vendors, logistics center and the demand side three aspects, aiming at the minimize of the cost, using the mixed integer programming method and the Lingo software for building the logistics center location model and get the results in this article.

    • The construction control techniques of tunnel in sand stratum under water

      2015, 37(Z1):129-132.

      Abstract (756) HTML (0) PDF 5.76 M (833) Comment (0) Favorites

      Abstract:This paper illustrated the instability mechanism of tunnel face in sand stratum under water by using the theory of Mohr-coulomb yielding criteria and the NITM method on the background of the second JiuHe tunnel in the railway from LanZhou to ZhongChuan airport. The drainage measures were taken to deal with the water in the stratum before tunneling and deep-hole pre-injecting measures were taken to improve the strength and stiffness of stratum. The double temporary invert and temporary sheeting were setup to provide artificial restriction for tunnel to improve the stability of tunnel.

    • Plant landscape design in healing Gardens

      2015, 37(Z1):133-138.

      Abstract (5441) HTML (0) PDF 7.21 M (1759) Comment (0) Favorites

      Abstract:The healing garden is a new landscape type emerging in recent years, which takes rehabilitation and health function as the design theme of landscape. The horticultural therapy of healing gardens has achieved good results in the rehabilitation of chronic disease, thinking dysfunction, etc, as shown by practices. In order to use the plant landscape effect of healing gardens more effectively, we need to establish a compound plant perception system based on five sense of vision, hearing, smell, taste, and touch. Multiple plants gardening system with the themes for children and the elderly were designed for different service groups. The plant space experience systems, merged as a suitable combination of different spatial scales, were created with the core of rehabilitation people. Optimizations in three aspects of the plant use were adopted in the rehabilitation landscape. Combinations of the plant’s color, smell, shape together with the construction of landscape’s whole environment were adopted to satisfy the physiological and psychological needs of different vulnerable groups including the old, young, sick, disabled and so on.

    • The floor vibration analysis of the building with an attached substation

      2015, 37(Z1):139-143.

      Abstract (1290) HTML (0) PDF 11.12 M (888) Comment (0) Favorites

      Abstract:In order to solve the practical problem of the conflicting between the shortage of land and the power consumption requirements, the substations used to be set in a separate area are built as a module attached to or put into the other comprehensive buildings in more and more area. This attached build substation equipment will cause vibrations in the structure of multi-floor, not only reduces the device's dynamic accuracy and performance,but also the reduces the floor vibration comfort. Based on the analysis of national building codes of the basic provisions on the vibration comfort index, the finite element models of the whole structure with an attached substation equipment with and without the vibration isolator were established to obtain the dynamic responses in the exciting of the machines. Through the vibration analysis of the each model, the calculated results and the specification limits are compared to determine the comfort of the building with the attached substations and isolation effect.

    • Error analysis about beam internal force calculated by different methods in rib structure

      2015, 37(Z1):144-149.

      Abstract (1106) HTML (0) PDF 6.33 M (935) Comment (0) Favorites

      Abstract:Error exists between the internal forces from manual calculation and that from simulation by ABAQUS. By changing line stiffness ratio of girder to beam and magnitude of load, it analyzes how girder’s deflection and its constraint to secondary’s rotation effect the error which is not considered in manual calculation. Also it concludes the facts that the error can’t be ignored since that it may be up to 40%, far larger than the maximum error-5% permitted in engineering. So, it proposed a coefficient table to correct internal forces of beam from manual calculation to promote the safety and economy of structure design.

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