彭山体育馆抗连续倒塌性能研究

RESEARCH ON THE PROGRESSIVE COLLAPSE RESISTANCE PERFORMANCE OF PENGSHAN GYMNASIUM

彭山体育馆作为大型公共活动场所,甚至生命线工程,一旦发生连续倒塌事件,将会造成大量的人员伤亡。目前,结构抗连续倒塌的研究集中于框架结构体系,为研究彭山体育馆抗连续倒塌的影响因素及其破坏机理,提出适宜的措施以避免连续倒塌的发生。阐述结构抗连续倒塌的分析方法,明确关键柱部位,模拟关键柱失效后结构的动力效应,提出适宜的抗连续倒塌措施。结果表明:提高材料的失效应变或增设支撑均可以明显提高结构的抗连续倒塌性能,由于材料失效应变与诸多因素相关,为安全起见,可采用增设支撑法以提高结构抗连续倒塌性能。

Pengshan Gymnasium,as a large-scale public place and even a lifeline project,will cause a large numbers of casualties once the progressive collapse occurs.Research on the progressive collapse resistance of the structures now is concentrated on the frame structure system.In order to study the influencing factors of Pengshan Gymnasium for the resist progressive collapse and failure mechanism,some suitable measures were proposed to avoid the occurrence of progressive collapse.The analysis method of structure to resist progressive collapse was described,the position of the key column was discussed,the numerical analysis on the dynamic effects of the structure following the key column failure was simulated,and appropriate measures to resist progressive collapse was proposed.The analytical results showed that the capacity of progressive collapse resistance of structures could be remarkably improved by increasing the failure strain of the structural material,as well as appropriately adding supports.The failure strain of structural material was influenced by many factors,for the sake of safety,adding support method could be used to improve the capacity of progressive collapse resistance performance.