静力弹塑性分析中若干问题的研究与探讨

Study and Discussion on Some Problems in the Static Elastoplastic Analysis(Pushover Analysis)

对静力弹塑性分析中涉及到的包括等效单自由度体系的建立、等效粘滞阻尼的确定以及性能点的求解等理论问题进行了证明和探讨,指出了应用ETABS和PUSH程序进行分析的优缺点。在文[2]的基础上,进一步阐述了在ETABS程序中利用等效柱代替墙进行弹塑性分析的方法。

The theoretical problems in the static elasto-plastic analysis （pushover analysis） are proved and discussed, which include the formation of equivalent single degree-of-freedom （SDOF） system,the creation of equivalent viscous damping,and the solving of the performance points. The merit and the limitation of ETABS and PUSH program are also pointed out, the method of equivalent columns taking the place of walls in ETABS is made further investigated on the basis of document 2.