【摘要】 隔震技术在高层结构中发展较为成熟,在发达国家的地震高烈度区有较好的应用。隔震技术在大跨空间结构中已有所应用,但相关的研究及应用相对较少。本文选取抗震设防烈度为7度(0.15g)地区的一类典型的钢结构大跨屋盖为对象进行隔震设计与分析。为减小整体结构在地震作用下的反应,本文为桁架屋盖设计了隔震方案,通过地震作用时程分析研究了隔震结构的抗震性能。隔震结构与非隔震结构的地震反应分析表明,隔震设计能显著减小钢结构屋面的地震作用。合理的隔震方案不仅可以降低混凝土柱自身及屋盖与柱连接节点的设计难度,而且能降低平米用钢量,具有良好的社会效益和经济效益。更多还原

【Abstract】 The techniques for isolation building have been mature in engineering with well applications. But the isolation design and investigation for long span space structure only are studied recently. In this paper,a structural seismic isolated design method is proposed for gymnasium with long span truss roof. Seismic analysis is also conducted considering the seismic precautionary intensity of 7( 0. 15 g). The results of the analysis demonstrate that the layout of the isolation can reduce the earthquake effect for the long span roof and can also reduce the number of steel for the construction. Moreover,the suitable layout arrangement of the isolation can reduce the interaction force between the roof and concrete columns.更多还原