【摘要】 通过对网壳结构进入非线性后的抗震性能研究,不但对现有结构可能发生的破坏加深认识,而且也为未来结构抗震设计打下基础.以K8型大跨度单层网壳结构为例,考虑结构几何和材料非线性因素,用大型ANSYS有限元软件,对其进行非线性地震时程分析.对比结构线性和非线性情况下的动力响应,并分析了地震动持时和竖向地震荷载对结构强度的影响.由网壳结构屈曲形态显示结构的薄弱区域,为工程结构加固和抗震设计提供参考.更多还原

【Abstract】 The study on the anti-seismic performance of reticulated shells not only redounds to deeply understanding the possible structural damages,but also provides a base for further mechanism study and practical design.The nonlinear seismic response of the representative K8 reticulated domes with great span is calculated by finite element software ANSYS,and the geometric and material nonlinearity are all considered in this paper.The effects of response between the structure of the linear and nonlinear are compared under horizontal and vertical duration earthquake respectively.The weakness area is obvious found from the response curve,which provides the reference of seismic design of engineering structures.更多还原