【摘要】 采用Pushover法对在5.12地震中遭受损害的什邡电信大楼进行罕遇地震作用下结构的弹塑性分析。研究该结构在罕遇地震作用下的内力、变形与破坏情况,比较不同结构模型在多种加载模式下的动力特性与抗震性能,研究结构在大震作用下的薄弱环节与塑性铰的分布特点。结果表明,不同结构模型在罕遇地震作用下均满足"大震不倒"的抗震设防目标,数值模拟结果与实际破坏情况吻合,且在钟楼上施加荷载与接收塔对结构的地震响应有放大作用。更多还原

【Abstract】 The Pushover method was applied to an example of Shifang Telecom building which suffered from the 5.12 Earthquake.The deformation,internal force and the damage were investigated.The dynamic property and seismic behavior of different models under multiple loading cases were compared.The weakness of the structure and distribution of plastic hinge were studied.The results show that different models can all meet the ‘non-collapse under rare earthquake ’ requirement of seismic resistance,and the numerical simulation agree well with the reality.The load and the receiving tower imposed on the bell tower can amplify the seismic response.更多还原