基于SAP2000多层钢结构静力弹塑性分析

Application of SAP2000 in nonlinear static analysis

采用SAP2000n程序对一五层框架结构进行了弹塑性静力分析,计算过程结合中国规范对一些参数进行了调整,结果表明:该方法可从层间位移角、塑性铰分布及变形等方面对结构进行综合的量化评价,并能揭示出结构在罕遇地震作用下的薄弱环节是实现基于性能设计的有效方法。

This paper presents the principle and calculation procedures of the method in SAP2000n, while modifying some coefficients according to China code for seismic design. A steel frame structure is then analyzed and the result proves that the push-over method is effective in performance-based design since it can not only give a general as sessment of the structure with regard to many points such as the plastic hinge distribution, the inelastic displacement of stones, but also reveal the weak points of the structure under the action of earthquakes that seldomy occur.