地震位移谱作用下的板梁结构响应数值模拟

Numerical simulation of plate beam structure response under seismic displacement spectrum

板梁结构在建筑中应用十分广泛,一旦发生地震,会造成板梁结构破坏和人员伤亡,因此板梁结构在地震中的损害研究对板梁结构抗震设计有重要意义,运用ANSYS软件对板梁结构在地震位移谱作用下的响应进行数值模拟研究。通过对比板梁结构各阶振型,各部位在地震位移谱作用下的最大位移值和受到的等效应力大小,得出板梁结构在地震位移谱作用下振型、固有频率、最大位移、等效应力的变化规律,并探究出其中相应关系,研究结果可对板梁结构抗震设计提供依据。

Plate beam structure is widely used in buildings.Once an earthquake occurs,it will cause damage to the plate beam structure and casualties.Therefore,the research on the damage of plate beam structure in the earthquake is of great signifi￣cance to the seismic design of plate beam structure.In this paper,ANSYS software is used to carry out numerical simulation re￣search on the response of plate beam structure under the earthquake displacement spectrum.By comparing the vibration modes of each stage,the maximum displacement value and the equivalent stress of each part under the action of seismic displacement spectrum,the change rules of vibration mode,natural frequency,maximum displacement and equivalent stress of plate beam structure under the action of seismic displacement spectrum are obtained,and the corresponding relationship among them is ex￣plored.The research results can provide a basis for seismic design of slab girder structures.