2005, 27(1):1-7. DOI: 10.11835/j.issn.1674-4764.2005.01.001
Abstract:In the modern cinema design, the auditorium is the kernel of its technological design. There is a close relationship between the screen and the scale of auditorium; therefore, to determine the width of screen and the scale of the auditorium correctly, the film projection and cinema technique should be acquainted with. The width, height, brightness of the screen and the luminous flux, focus of the cineprojector are important factors of cinema auditorium design.
ZHOU Tie-jun , YUAN Yuan , WANG Xue-song
2005, 27(1):8-11. DOI: 10.11835/j.issn.1674-4764.2005.01.002
Abstract:Within the domain of comprehensive architecture, the general instructive principles for the sustainability design are applicable to that of industrial building. Based on the analysis of excellent precedents, in this paper, some useful experiences are summarized. It is pointed out that the sustainability design is feasible and should be compulsive for industrial building.
2005, 27(1):12. DOI: 10.11835/j.issn.1674-4764.2005.01.003
Abstract:In this paper, an attempt of rational estimation is made, in which the authors evaluated a specified object by taking a given theory as basis, using some given methods, the given items about the object are studied and analyzed. The evaluation object in this paper is the Sanxia Plaza in Chongqing. The purpose is to promote the well development of specialty evaluation system.
2005, 27(1):18-22. DOI: 10.11835/j.issn.1674-4764.2005.01.004
Abstract:The significance of urban public environment doesn't consist only in meeting the demands of certain function. The public environment of a city can also be its important part through supporting and stimulating significant urban public behavior. From four main aspects of the theory of defensible space, the authors discussed how to establish good relationship between public environment and public life in the city; meanwhile, the authors provide some proposals and ways to enhance the quality of public environment of a city.
WANG Hong-wei~ , WU Shuo-xian~ , ZHAO Yue-zhe~ , GUO Zhi-chao~
2005, 27(1):23. DOI: 10.11835/j.issn.1674-4764.2005.01.005
Abstract:The impulse responses and other acoustical parameters of Huangpu Teenager Palace were measured. Meanwhile, the acoustical simulation based on software ODEON was carried out as well. The parameters based on computer simulation are compared with the measured ones. This case study shows that the auralization technique based on computer simulation can be used for predicting the acoustical quality of a hall at its design stage.
2005, 27(1):26-31. DOI: 10.11835/j.issn.1674-4764.2005.01.006
Abstract:On the basis of investigations related to the existing problems about digitalization and information in the urban and rural planning, the authors analyzed the requirements of an operational platform for digital urban and rural planning. Then, an overall design and relevant modules of the foundational platform for digital urban and rural planning are proposed according to the principles of software engineering. The object-oriented programming language, Visual C++6.0, and the relational database, Visual FoxPro6.0, were selected as the common tools for developing the platform.
2005, 27(1):32-36. DOI: 10.11835/j.issn.1674-4764.2005.01.007
Abstract:The hospital design is a highly specialized and sophisticated one; meanwhile, a "highly adaptable building space" to meet the developing demands for hospital building space is put forward with the hospital building as a research objective. In this paper, two basic features of the highly adaptable building space-multi-suitability and changeability are analyzed, according to the practice of hospital building design. The design methods and steps of "highly adaptable building space" are explored.
2005, 27(1):37-40. DOI: 10.11835/j.issn.1674-4764.2005.01.008
Abstract:The energy consumption and sight pollution of glazing curtain wall are two problems to be urgently managed. Intelligent curtain wall is a new type one of energy conservation and environment protection, in which the thermal channel to save building energy consumption and automatic sunshade to adjust sunlight are adopted. Four engineering examples of oversea intelligent curtain wall are briefed. The construction and energy saving principle of ventilative curtain wall as the core technique of intelligent curtain wall are presented. The earliest ventilative curtain wall in China Mainland, and its test results of heat preservation in winter are stressed. The design experience of how to choose three key parameters: the width of thermal channel, the layout of inlet and outlet and the type of glass is discussed.
FU Jian-ping , CHEN Xiao-ying , CHEN Tao , BAI Shao-liang
2005, 27(1):41-47. DOI: 10.11835/j.issn.1674-4764.2005.01.009
Abstract:为了识别节点核心区的传力机理,特别是其中水平箍筋的作用和轴压比的影响,作者所在的研究集体自20世纪90年代后期以来完成了钢筋混凝土平面框架中间层中间节点的抗震性能系列试验。现首次陆续公开发表此项研究成果。介绍了6个接近足尺的中到低剪压比(Vj/fcbjhj≤0.20)试件的试验结果。其中主要的新结论是:(1)核心区水平箍筋除去平行受力方向箍筋参与形成抗剪桁架机构外,所有箍肢还随组合体位移延性增大对核心区斜压混凝土发挥越来越大的约束作用,对核心区斜压型剪切破坏起重要控制作用;(2)在剪压比未超过0.17的节点中,轴压比的增大能扼制核心区交叉斜裂缝的发育,减缓梁筋贯穿段的粘结滑动和屈服渗透,提高节点发生剪切破坏时组合体的位移延性;但剪压比大于0.17后,除减小粘结滑移外,其余有利作用基本消失,但尚无不利作用;(3)节点的剪切变形在组合体总变形中占有大小不等的份额,不容忽视。首次给出了合理的节点抗震性能评价准则及方法。
ZHANG Chuan , ZHANG Bai-sheng , HUANG Jian-feng
2005, 27(1):48-52. DOI: 10.11835/j.issn.1674-4764.2005.01.010
Abstract:On the basis of available testing data of simply supported reinforced concrete beams without web reinforcement under two-point concentrated loads,the dominant factors contributing to shear performance are identified,and the basic laws are correspondingly quantitatively described.The shear design equations of China Design Code of Reinforced Concrete Structures,ACI Code,together with two other expressions of shear of RC beams without web reinforcement,are thus calibrated to identify their accuracy in describing the shear mechanism of such members.
CAO Shu-gang~ , LIU Yu-cheng~ , XU Jian~
2005, 27(1):53-55. DOI: 10.11835/j.issn.1674-4764.2005.01.011
Abstract:通过分析重庆某高层建筑桩-箱基础底部土体所受压力的实测资料,得出箱基底板土体受到的压力随着施工加载呈始快后慢再趋稳定的增长态势;底板土体所受压力在荷载重心区域大,四周区域小;沿纵向轴线和横向轴线都呈现双反拱形。实测结果证明,桩间土体可以承担4.0%。15.9%的上部结构荷载。
QIN Shi-hong~ , CHEN Gang~ , LI Tang-ning~ , HUANG Wen~ , WANG Lin-qiang~
2005, 27(1):56-61. DOI: 10.11835/j.issn.1674-4764.2005.01.012
Abstract:This paper introduces the analysis and test of prestressed flat beams in tube-in-tube concrete structures at different construction stages; moreover, the corresponding structural analysis models with FEA program are set up. Through the comparative analysis between the results of construction field test and that of calculation with FEA method, it proves the reliability of the primary design method; meanwhile, it also indicates that establishment of prestressing force and prestressed effects in similar structures is a complex procedure and should be noticed.
2005, 27(1):62-66. DOI: 10.11835/j.issn.1674-4764.2005.01.013
Abstract:During the construction of non-symmetric double-arch rock highway tunnel, the complicated geological condition may affect the safety of the constructor and the engineering quality. In this paper, two treatment methods are put forward. At first, the site monitoring of surrounding rock displacement must be carried out, then, BP neural network is applied in predicting the displacement of surrounding rock based on the learning sample of measured value, so the stability of surrounding rocks may be analyzed and forecasted. During the analysis of BP neural network, the effects of joint and fracture of surrounding rock on displacement can be comprehensively considered, comparing the predicted values of displacement with those by FEM. The results show that not only the predicted error of BP neural network is relative small, but the predicted values of surrounding rock displacement are close to measured ones. So, the predicted values of BP neural network are reliable and may guide the engineering construction in site.
LIU Zong-fa , LI Zheng-liang , YAN Zhi-tao
2005, 27(1):67-70. DOI: 10.11835/j.issn.1674-4764.2005.01.014
Abstract:A structural optimization algorithm is performed for single-layer Kiewit reticulated dome by means of ANASYS. In the process of optimum design, the overall weight is taken as objective function; the stress constraints and stability constraints etc are considered. Meanwhile, the geometrical non-linearity is taken into account. Then the overall stability analysis for the optimized single-layer reticulated dome is operated. The results show that the optimization design is reliable.
2005, 27(1):71-75. DOI: 10.11835/j.issn.1674-4764.2005.01.015
Abstract:In this paper, the current situation on the study of water required for ecology and environment is summarized aiming at the maintenance of the view and ecology of landscape river in the affluent water area, to bring forward the calculation method of water required for ecology and environment of landscape. The authors put forward a point of view that the water required for ecology and environment of landscape is the water to keep the integrity of structure and function of river ecology and circumjacent landscape. In calculation of the water required for ecology and environment of landscape, firstly, the relation of river creature posture and wade wet cycle during some period should be studied to ensure the relation of water area dimension and river ecology system. Secondly, a key cross section is chosen to estimate the relation of water level and downstream landscape through referring to historical data, compute the relation of water level and runoff and it can fix on the relation of downstream landscape and water level at a key cross section. Finally, the authors adopt a method of mace-attribute decision-making analysis to make sure appropriate water required for ecology and environment of landscape. For the sake of explaining above point of view, this paper gives an example of calculation of water required for ecology and environment of landscape for Lijiang River.
2005, 27(1):76-79110. DOI: 10.11835/j.issn.1674-4764.2005.01.016
Abstract:不进行预处理,用两种不同数量级孔径的微滤膜处理长江上游重庆段原水,发现4~10μm孔径聚乙烯微滤管浊度去除率低,出水浊度高,0.2~0.9μm孔径超高分子量聚乙烯微滤管浊度去除率高,出水浊度小于3NTU。采用2m高位水箱进水方式,大流量有压空气反吹辅以原水排污的在线物理清洗能使0.2~0.9μm孔径膜保持长时间稳定通量运行。通过该试验,确定了0.2~0.9μm孔径微滤膜处理长江上游重庆段原水的设计运行参数。
2005, 27(1):80-83. DOI: 10.11835/j.issn.1674-4764.2005.01.017
Abstract:This paper summarizes the results obtained from the first year atmospheric corrosion test of carbon steel specimens exposed in 12 sites in Asia. As shown by the results, the corrosion rates of carbon steel vary with the atmospheric environment and the difference can reach a factor of 16. Among the environmental pollution factors, the most detrimental factor is atmospheric sulfur deposition for atmospheric corrosion of carbon steel. Especially, in Chongqing, the high SO_2 levels plus humid and warm climate lead to the most serious atmospheric corrosion of carbon steel.
LU Jun~ , GAO Ya-feng~ , LUO Liu-nian~ , GONG Qi~ Eco-environment
2005, 27(1):84-87. DOI: 10.11835/j.issn.1674-4764.2005.01.018
Abstract:On the basis of saving energy, protecting environment, strategy and efficiency, in this paper, the advantage of passive dehumidifying solar house over other traditional dehumidifying systems are expounded. The high humid environment affects not only the thermal comfortableness of indoor people, but also the indoor sanitary condition, human health, indoors electrical equipment and life span of the furniture. This paper presents a passive dehumidifying solar house, the dehumidifying body can be regenerating evaporation by solar energy; new dehumidifying equipment is designed to reduce relative humidity. It is proved that the new dehumidifying body has a very good dehumidifying effect. It will be widely used in some districts.
LUO Ming-zhi , LI Bai-zhan , XU Xiao-lin
2005, 27(1):88-91. DOI: 10.11835/j.issn.1674-4764.2005.01.019
Abstract:In this paper, the university teaching buildings in Chongqing are taken as study object, and the indoor thermal environment of classroom is studied with the ways of investigation and testing, in which the indoor thermal environment of classroom is characterized by two aspects: personal and impersonal. The accepted thermal environment range of the classroom in summer is obtained. The difference between predicted thermal sensation and measured one as well as the influence of air velocity on thermal sensation are analyzed. Some measures to improve indoor thermal quality are proposed.
WU Zheng-song , PENG Xu-ya , CAI Hua-shuai , LI Ming
2005, 27(1):92-96. DOI: 10.11835/j.issn.1674-4764.2005.01.020
Abstract:In this paper the fundamentals, classification of composting and categories of compost microorganism are introduced. The situation of use of mixed cultivation of microorganism in compost both at home and abroad is summarized. The emphasis is put on the fact that the mixed cultivation is good for the degradation of cellulose and the approach to improve the degradation ability of cellulose.
2005, 27(1):97-100. DOI: 10.11835/j.issn.1674-4764.2005.01.021
Abstract:Green construction is the main embodiment of application of sustainable development strategy in construction process and is the important part of sustainable construction industry. In this paper, the current state and shortage concerning the green construction in China are described, followed by analyzing the reasons from the viewpoint of cognitions, technique, cost, management and regulation. In this paper, recommendations on countermeasures promoting the application of green construction in China are put forward, which include enhancing the consciousness of participant on green construction, mitigating the economic barriers to application of green construction, establishing and perfecting the regulations as well as setting up the assessment system on green construction.
SONG Zong-yu~ , GUO Jin-hu~ , LIU Shu-li~
2005, 27(1):101-105. DOI: 10.11835/j.issn.1674-4764.2005.01.022
Abstract:Construction and relative service is one of the important categories in international service trade set down by WTO. In order to strike a construction agreement, the developed countries and districts have designed a lot of prevailing standard treaty wording, in which FIDIC plays the most important part. We should take advantages of their experience to improve our standard treaty wording.
CAO Xiao-lin , LI Da-hua , HONG Hong
2005, 27(1):106-110. DOI: 10.11835/j.issn.1674-4764.2005.01.023
Abstract:As a municipality directly under central government, Chongqing has a dual economic structure. We can't break away from its history and realistic condition while studying its urbanization development model. In this paper, taking the theory of urbanization development as the foundation, fully using the experience in urbanization of developed area for reference in combination with the reality in Chongqing, the urbanization development model for Chongqing is put forward as "metropolitan area + dot-axle type town strap", that is, taking metropolis area as the center and Yangtze river and Line 319 (Yuhai Railway) as the development axle and the towns along the axle as the node, the development is carried out like a string of beads to form a network type urban system with metropolitan area as center and cities such as Wanzhou, Fuling and Qianjiang etc along Yangtze River as the regional center.
2005, 27(1):111-113117. DOI: 10.11835/j.issn.1674-4764.2005.01.024
Abstract:With the mixing of internal and international markets, many excellent foreign project management companies will invest in China. Facing the increasingly drastic competition of project management market, China's project management enterprise must catch the opportunity, accepting the challenge and creating a brand. In this paper, the present situation and problems of creating a brand of project management enterprise in China are analyzed. It brings forward the ways of creating management enterprise brand through intensifying consciousness of brand, building up a conception of brand capital, strengthening the construction of enterprise, improving consciousness of service, managing strictly and canonically, enhancing the service and improving staff training, setting up advanced management strategy and enhancing competition of enterprise.
2005, 27(1):114-117. DOI: 10.11835/j.issn.1674-4764.2005.01.025
Abstract:In this paper, the current situation of the management of urban infrastructure construction projects invested by government and the weakness of its managerial mode are briefly analyzed. The authors point out that it is a practical choice to improve the management by innovating in the managerial mode and establishing specialized organizations. Employing basic methods of science of organization and management, referring to the experience of developed countries, a new mode named "Works Bureau" is suggested. Two operational models based on financial and non-financial requirement of government projects are demonstrated in detail.
2005, 27(1):118-124. DOI: 10.11835/j.issn.1674-4764.2005.01.026
Abstract:At present, in the evaluation process of the real estate value the material form is mainly concentrated on, while the value brought by the real estate brand are usually neglected. In this paper, considering the particularity of the real estate brand evaluation, the method of network analysis is adopted. In the evaluation process, the evaluation method of excess income law are developed by leading the thoughts and methods of the fuzzy set theory, and a systematic assess model is found. Then, an example is given as illustration. At last, the appraise about the application of the model is made.
2005, 27(1):125-127135. DOI: 10.11835/j.issn.1674-4764.2005.01.027
Abstract:The design stage is the key part in the control of construction cost,but,there is always short of strength of cost control in design phase. In this paper,the characteristics of construction design stage are discussed, and five methods for construction cost control in design phase are put forward, which inspire us further to strengthen control and management in design phase as a governmental policy and ensure feasible technique and reasonable economy designs.
FU Chun-ping~ , ZHONG Cheng-hua~ , DENG Chun-guang~
2005, 27(1):128-131. DOI: 10.11835/j.issn.1674-4764.2005.01.028
Abstract:Based on mechanism of eutrophication, the cause of eutrophic formation in water is analyzed in this paper. The analysis is made from the level of nutrients (nitrogen and phosphorus), content of iron and silicon, illumination intensity, temperature, water dynamics (stream of water and wind power) and period of renewal. The purpose of the analysis is to provide a reference to keep a balance of ecology in water, control the water pollution and prevent eutrophication of water.
2005, 27(1):132-135. DOI: 10.11835/j.issn.1674-4764.2005.01.029
Abstract:In this paper, the encapsulation of ICMP packets and the specifications of IP packet, ICMP packet and UDP packet are introduced. At the angle of the protocol analysis, a ICMP attack case is described the characters of attack are abtained and the corresponding countermeasures are presented.
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