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首页> 外文会议>EUR 21431; Final Conference of Cost Action C12; 20050120-22; Innsbruck(AT) >On the structural effects of fire following earthquake
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On the structural effects of fire following earthquake

机译：地震后火灾的结构效应

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Fires following earthquakes are one major threat in seismic regions. This is testified by several historical great earthquakes, which were characterised by the development of large fires: San Francisco 1906 and 1989, Tokyo 1923, Kobe 1995 are representative examples. The obstruction of access roads caused by rubble and collapsed buildings in the streets, the possible difficulties in water supply soon after the earthquakes, as well as the concomitance of multiple fires are some possible factors contributing to such risk. Besides, depending on the extent of earthquake-induced building damage, the fire resistance rating of the structure could be significantly reduced. To this concern, paper summarises the results of some preliminary numerical investigation, dealing with steel moment-resisting frames. Multiple levels of earthquake intensities, hence earthquake-induced damage, are considered by scaling acceleration records to increasing values of the elastic pseudo-acceleration. Moreover, two building structural systems are considered, one characterized by perimeter moment-resisting frames only, the other characterized by moment connections in all the bays.
机译：地震后的火灾是地震地区的主要威胁之一。几次历史性大地震证明了这一点，其特征是大火的发展：旧金山的1906年和1989年，东京的1923年，神户的1995年就是典型的例子。街道瓦砾和倒塌的建筑物造成的通行道路阻塞，地震后不久可能出现的供水困难以及多次起火的后果都是造成这种危险的一些可能因素。此外，根据地震对建筑物的破坏程度，可以大大降低结构的耐火等级。为此，本文总结了一些初步的数值研究的结果，涉及钢制抗弯框架。通过将加速度记录按比例缩放到弹性伪加速度的增加值，可以考虑地震烈度的多个级别，进而考虑地震造成的破坏。此外，考虑了两种建筑结构系统，一种仅以周边抗力矩框架为特征，另一种以所有隔间的力矩连接为特征。

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