最新刊期
卷 29 ， 期 5 ， 2007
- 摘要：Under the background of the new rural construction in China, it is an important scientific question and an urgent social task to construct the harmonious society and to achieve the sustainable regional development on how to construct concentrative residence and manage the human habitat environment in the fast industrializing and typically urbanizing area. This paper analyzed the problems in the construction of the human habitat envi- ronment in the rural area of southern Jiangsu, discussed the methodologies of planning and design for rural con- centrative residence, researched the human habitat environment improvement technologies, and put forward the resolution of the recycling community for the rural inhabitation, which aimed at demonstrating the practicing in rapidly urbanizing regions.687|29|0更新时间：2023-11-28
- 摘要：Recent rapid urbanization has broad impact on the contemporary urban environment. Preserving the natural environment has become the central issues in the world. The main concern of this paper is to address the importance of social function of green space. Some results of a survey conducted among visitors of urban parks in Mianyang city in Sichuan Province are presented and discussed. The results confirm that open space experiences have a positives influence on psychological and mental health. Urban green space verifies beliefs about stress-reduction benefits and mental health, and advances social intercommunication. Finally, the monetary evaluation methods of urban green space, such as contingent valuation method, hedonic pricing method, travel cost method, are discussed.561|9|0更新时间：2023-11-28
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- 摘要：Each city includes memory elements. As a precious resource, the city memory exists, changes and continues in reality through visual material objects and cultural sub-consciousness. It is the basic context clue for urban people to apperceive, to experience themselves and their existent environment with the lapse and change of time. Beginning with the concept of memory, this article analyzed the relationship of time, space, human being and environment. It tried to use interdisciplinary research methods and rethink about the essence of city and architecture in the perspective of psychology and sociology, so as to explore the dee Pissues of ideology and value conception in urban design and urban conservation of history and culture.1099|891|0更新时间：2023-11-28
- 摘要：The 3D urban planning information system has been the focus topic in urban palnning management. In this paper,the related development of 3D urban planning is reviewed and the development object,data acquisition, system application level and three important characters of 3D urban planning information system have been also discussed. Thus, a system framework iseatablished. Finally,several primary problems are put forward and thought to be resolved to improve the practicability of 3D urban planning information system over large scale.578|840|0更新时间：2023-11-28
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- 摘要：An experiment is conducted on the impact of green roof on Indoor Human Thermal Comfort. The result shows that the temperatures of the building walls and indoor air fall for certain degrees, and that is good. But unfortunately, the relative humidity of the indoor air rises. Totally speaking, the whole effect is changed from feeling warm to basically acceptable. When the requirement of the indoor environment is high, it is impossible to be satisfied by exploiting green roof solely, other methods, such as using night ventilation, electric fans or air-conditioners, should be taken at the same time.791|820|0更新时间：2023-11-28
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- 摘要：By experiment of the beam bars in exterior short pier shear wall joints,the anchorage performance of the beam bars in joints on the action of low cyclic load have been studied to attest if the beam bars in exterior short pier shear wall joints can sufficed with the demanding of anchorage intensity and anchorage rigidity, when the anchorage of beam bars satisfy the requirement of the code.516|701|0更新时间：2023-11-28
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- 摘要：This paper carried out an experimental study on the compressive property of Luojiashan Clay at Wuhan University. In order to investigate the influence of compaction degree, compaction water content and saturation state of compacted soil on the compressive property of clayey fill, compression tests were done on the samples compacted to different water content around optimum moisture content by different degrees of compaction. The theory of compacted soil structure was used to explain mechanism of the influence, and it was the change of soil structure that caused the variation of compresSive property. The results of the tests show that it was at agiven range of stress that degree of compaction and compaction water content have influence on the compressive prop- erty of clayey fill. Around optimum moisture content with degree of compaction decreasing or compaction water content increasing, the compressive deformation of clayey fill increased. When compacted fill was saturated by water soaking, the compressive deformation increased much, and the clayey fill compacted at greater water con- tent than optimum moisture content showed smaller compressive deformation caused by saturation at other conditions the same.507|457|0更新时间：2023-11-28
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Analysis on the Temperature-control Effect of the Particle Improved Roadbed in Qinghai-Tibet Railway
摘要：Based on the observerd ground-temperature data of the particle improved roadbed in Beiluhe test site of Qinghai-Tibet railway, the characteristics of the ground temperature to the particle improved roadbed and its temperature-control effect are analyzed ,and compared with other frozen soil protecting means. The result indicated that the ground temperature of the particle improved roadbed changes with the seasons,and its characteristics present as a sinusoidal curve. Compared with the normal roadbed, the paticle improved roadbed has cooling roadbed and the effect of protecting frozen soil in mean annual ground temperature. Compared with the normal duct-ventilation embankment, the cooling effect of the particle improved roadbed in cold season is less than that of the duct-ventilation roadbed,and the thermal shield effect is better than that of the particle improved roadbed in warm season. The ground temperature curve has the better tendency of the frozen soil protection. It is an active means of frozen soil protecton.530|11|0更新时间：2023-11-28 -
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- 摘要：Based on the Linear Elastic Multi-layer Theory, using the pavement finite-element program, this article discussed the shear stress distribution regularities and influencing factors in high grade asphalt pavement layers. The results demonstrate that the max shear stress appears in surface to 3cm depth span regardless of the material characteristic and thickness in each layer. The major influencing factors on the shear stress are modulus and Poisson ratio of asphalt layer, modulus of base layer. By comparing the database with testing results, to three asphalt layers pavement structure, it is necessary to check the shear strength in wearing layer and midlayer. When checking, the precious position must be found to calculate the max shear stress in each layer.611|9|0更新时间：2023-11-28
- 摘要：The authors developed a computer program of transient predictive calculation method on underground ventilation network. The program approximated a field data set of seasonal cyclic changes of air Temperature and humidity at the inlet to the sine curves, and included sensible heat conduction from rock to air current. The temperature of rock around and airway was calculated by finite difference method. The prediction method can be used to calculate the variation of flow rates, temperatures and humidities of air flow in the airways along underground network.590|11|0更新时间：2023-11-28
- 摘要：On the background of grandstand cantilevered roofs of two aiding foreign stadiums, the wind resistance of two large cantilevered roofs with different structure forms is compared on the basis of pressure data acquired from wind tunnel test of rigid models, according to their models, frequencies, mean wind pressure coefficients and fluctuating wind pressure power spectrum densities. A conclusion is made that the arch on the front edge of the large roof can improve the wind resistance, and is validated by calculating wind induced responses of the two kinds of the large roofs. Finally, several reasons for that the arch on the front edge is beneficial to the wind resistance of the large cantilevered roof are concluded.598|8|0更新时间：2023-11-28
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- 摘要：The static stability of a tailings dam is analyzed with a finite element approach, which takes into account the effect of plastic deformation, temperature, saturation and void ratio on the properties of soil materials, the effect of water and soil interaction and the extended Mohr-Coulomb failure criterion. The concept of yield approaching degree is introduced, which is defined as the ratio of the existing equivalent stress to the yield stress taking into account the effects of different influencing factors. The response of the tailing dam subjected to the coupled saturated/unsaturated seepage and deformation is simulated, considering that the dry beach is 100-meter long and the starter dam is jammed, respectively. The important indexes such as the deformation and the phreatic surface of the dam are obtained. The distribution of the yield approaching degree in the whole dam under the given condition is obtained, which can provide not only a general stability assessment of the dam, but also important information to the decision-making for the reinforcement and maintenance of the dam.602|7|0更新时间：2023-11-28
- 摘要：Thermal stress is one of the important influence factors of crack and deformation for large-span bridge structures. Grounded on Shibanpo Yangtze River double line bridge and universal finite element program MIDAS-Civil with referring to specifications of China and British BS5400, above all, it is for this Bridge that the stress and deformation influence is studied by setting section temperature difference and system temperature change, afterwards, the effect on the newborn bridge is discussed by combining impact of the section temperature difference and the system-calefaction linearly , and then, the effect is compared with the impact brought by moving load. The results will have a certain extent value for the design of ShiBanpo double line bridge and other similar bridges.761|9|0更新时间：2023-11-28
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- 摘要：Substantially, the process of biological treatment for wastewater is the process of bacterial energy metabolism. In this paper, from the viewpoint of energy and based on the conservation of mass and energy, an energy metabolism equation is constructed. Through the experimentation, the parameters in equation are measured. Through this equation the reason for SRT choice of activated sludge system is explained from the viewpoint of microcosmic. This equation is adaptable to optimizing the SRT of activated sludge system in the condition of low-organic load thereby to optimizing the energy distribution of activated sludge system for energy saving460|742|0更新时间：2023-11-28
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- 摘要：SBR method is the short for intermittent sequencing batch freatment that is an ideal techmology to order a certain amount of intermittent operation of the activated sludge treatment process. SBR which is currently an in-depth study of the biological wastewater treatment technology is a simple process, the effect of stability, small footprint, and strong resistance to shock load and has good advantages of nitrogen and phosphorus removal capacity. This study first analyzes and discusses substrate degradation process of SBR method , compares among several different SBR methods, and then derives microbial growth and substrate degradation kinetics relationship with a view to promoting the progress of the work in this area.583|653|0更新时间：2023-11-28
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- 摘要：This article states systematically the fundamental conception of the mode of construction management general contract, the contract structure and the organization structure through the analysis of the construction characteristics of Shanghai large-scale projects, considering the situation of China and the characteristics of this line. It also summarizes the characteristics of the mode of construction management general contract through the example of the Pudong International Airport Construction. The mode of construction management general contract not only meets the needs of construction technique in bettering the design of construction project building, but also releases the pressure in middle and later management of construction project building and overcomes the deficiency of the long-term building period, hard-to-control investigation brought by the problem of design, purchase, construction divided from and restricted by each other existed in the traditional contract mode. It also helps the contractor to provide socialized, specialized, commoditized service for the contractor. Helps to overall arrangement, economized investment, management level improve ment can be given. So it has the superiority in super large-scale projects construction compared with the traditional construction management.742|537|0更新时间：2023-11-28
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