内爆作用下RC框架结构SAP数值模拟

利用SAP2000软件,在构件拆除法的基础上增加了爆炸冲击荷载对关键失效构件周围其他构件的直接作用,对内爆作用下的RC框架结构进行了动力非线性分析,并将分析结果与仅采用构件拆除法的分析结果进行了对比。通过对比计算结果可以看出,爆炸冲击荷载对失效构件周围其他构件的直接作用会对RC框架结构的损毁程度产生较大影响。与构件拆除法相比,SAP2000分析方法更符合内爆作用下RC框架结构的实际受荷情况。与利用ANSYS LS/DYNA等大型有限元软件进行显示动力分析相比,SAP2000分析方法更易于掌握,节省时间,更便于广大结构设计人员使用。

Numerical simulation of RC frame structure SAP under implosion

The RC frame structure was modeled by SAP2000 finite element software. The method of increasing the explosion shock loading based on the alternate path method was used to analyze the non-linearity of the structural members under implosion,the results are compared with those obtained by the component demolition method only. By comparing the calculated results, it can be seen that the direct effect of the blast load on the other components around the failure member has a great influence on the damage degree of the RC frame structure. Compared with the alternate path method, the SAP2000 method is more suitable for the practical loading of RC frame structure under implosion. SAP2000 analysis method is easier to designers and it can save time than using ANSYS LS/DYNA and other large finite element software for dynamic analysis.