Push-over方法中不同加载方式对求解结构反应的影响

论述了利用非线性静力分析方法和D值法计算结构刚度的差异,以及产生差异的原因。在目前国内理论计算或者实际工程中较常用的是D值法,但是经过计算分析发现,用D值法计算出来的刚度与实际结构有很大的差异,并且D值法只能计算出结构弹性阶段的刚度,而当结构进入塑性状态,结构退化之后的刚度以及屈服位移,D值法则无能为力。所以采用钢结构模型重点介绍非线性静力分析方法在计算结构刚度上的优越性,希望能给国内专家做理论分析或者实际工程时提供参考。

THE EFFECT OF CALCULATING STRUCTURES' ANSWERS BY PUSH-OVER METHOD UNDER DIFFERENT LOADING WAYS

It is described the difference in computing structure′s rigidity between using method D and nonlinear static procdure,and the reasons.At present in China,method Dis used more often in theoretical computation and real projects.But using method D can only compute the elastic rigidity of structure,while the structure is in plastic state,degradated rigidity can′t be gained,not even the plastic displacement.When using the model of steel-structure,the superiority of nonlinear static procdure in computing the rigidity of structure is mainly introduced,which may provide experience for native experts.