This paper deals with the issues involved during the design of a complex gymnasium located at the new campus of Zhejiang University. The complexity comes from the gymnasium’s being of three parts: long-span membrane ...This paper deals with the issues involved during the design of a complex gymnasium located at the new campus of Zhejiang University. The complexity comes from the gymnasium’s being of three parts: long-span membrane structure, prestressed concrete structure and extraordinarily long tubular steel structure without seams. The paper first presents considera- tions of the prestress design, followed by analyses of the stress states due to temperature changes and concrete shrinkage. Buckling and postbuckling analyses were performed to determine the load-carrying capacity of the perfect and imperfect tubular steel structure of the inclined arch system, while dynamic relaxation method and general nonlinear finite element analysis were used to carry out shape-finding and stress analyses of the membrane structure respectively. Finally, collated monitoring date was applied to control the construction quality and verify the design parameters. Some useful conclusions are available at the end of the paper.展开更多
The paper analyzes different turbine design suitable for the urban environment. The author discusses various options for setting up wind turbines in relation to the building. In order to gain insight into the real ind...The paper analyzes different turbine design suitable for the urban environment. The author discusses various options for setting up wind turbines in relation to the building. In order to gain insight into the real indicators, considered are actual examples of wind turbines mounted on buildings, sports facilities, roads, etc. However, these turbines have relatively low efficiency and a long payback period, and the problem may be the noise they produce. Therefore, the wind turbines installed in buildings are still more a matter of prestige of individual investors and architects than profitable investment.展开更多
基金Project (No. 59908011) supported by the National Natural ScienceFoundation of China
文摘This paper deals with the issues involved during the design of a complex gymnasium located at the new campus of Zhejiang University. The complexity comes from the gymnasium’s being of three parts: long-span membrane structure, prestressed concrete structure and extraordinarily long tubular steel structure without seams. The paper first presents considera- tions of the prestress design, followed by analyses of the stress states due to temperature changes and concrete shrinkage. Buckling and postbuckling analyses were performed to determine the load-carrying capacity of the perfect and imperfect tubular steel structure of the inclined arch system, while dynamic relaxation method and general nonlinear finite element analysis were used to carry out shape-finding and stress analyses of the membrane structure respectively. Finally, collated monitoring date was applied to control the construction quality and verify the design parameters. Some useful conclusions are available at the end of the paper.
文摘The paper analyzes different turbine design suitable for the urban environment. The author discusses various options for setting up wind turbines in relation to the building. In order to gain insight into the real indicators, considered are actual examples of wind turbines mounted on buildings, sports facilities, roads, etc. However, these turbines have relatively low efficiency and a long payback period, and the problem may be the noise they produce. Therefore, the wind turbines installed in buildings are still more a matter of prestige of individual investors and architects than profitable investment.
