核岛侧常规岛主厂房山墙抗倒塌能力分析

The Capacity of Resisting Collapse of the Main Power Building Gable Nearby Nuclear Island

常规岛主厂房是一种特殊的工业建筑结构,具有质量、刚度分布不均匀、多错层等特点,其靠近核岛一侧山墙抗倒塌性能会影响核岛的安全性,应进行细致的分析与设计。首先,通过静力推覆法对主厂房结构在SL-2级地震作用下的整体抗震性能进行了研究,然后,通过移除核岛侧山墙的关键构件,对核岛侧山墙抵御突发事件的能力进行了评估。结果表明:经过合理的设计,核岛侧山墙能够在地震作用和重要构件突然丧失承载力的作用下保持不倒塌,结构具有较大冗余度,能保证核岛安全。

The main building of nuclear power station is a special kind of industrial structure with irregular in mass and stiffness. The capacity of resisting collapse of its gable can affect the safety of nuclear island nearby. The analysis and design should be arried on very carefully. Firstly,the seismic performance under SL-2 level earthquake of the main building of power station is studied through the Pushover analysis. Secondly,by dismantling the key component of the gable,the capacity of resisting collapse of the gable is evaluated. Results showthat through reasonable design the gable can have larger redundancy to avoid collapse under earthquake and sudden loss of bearing capacity of its key component,and can ensure the safety of the nuclear island.