李帼昌，  邵文帅，  王占飞，  杨  阳
（沈阳建筑大学土木工程学院，沈阳110168）

[摘要] 为了探明静力弹塑性分析方法中，不同侧向加载模式对超限高层结构抗震性能的影响。以沈阳地区某超限高层为研究对象，进行多遇地震作用下的反应谱分析和罕遇地震作用下的静力弹塑性分析。在抗震分析中，建筑物的场地类别为Ⅱ类场地，抗震设防烈度为7度(0.1g)。分析时，在建筑物的x方向和Y方向分别施加了三种加载模式的横向力，即层剪力加载模式、等加速度加载模式和振型加载模式。结果表明在三种不同加载方式下该建筑物的性能点、塑性铰分布以及弹塑性层间位移角有一定的差别，但在三种加载方式下，结构均满足抗震设防要求。
[关键词] 超限高层；抗震性能；静力弹塑性分析
中图分类号：TU973    文献标识码：A  文章编号：1002-848X(2012) S2-0168-04

Pushover analysis of an out-of-code high-rise building based on different types of loading modes
Li Guochang, Shao Wenshuai, Wang Zhanfei, Yang Yang
( School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China)

Abstract: In order to verify the effects of different loading modes on the seismic performance of the out-of-code high-rise building according to Pushover analysis method, the response spectrum analysis under the frequent earthquake and the static elasto-plastic analysis under the rare earthquake on a certain out-of-code lugh-rise building in Shenyang were performed.  In the process of analysis, the category of the construction is the class  II  and the seismic fortification intensity is 7 degrees (0. 1g).  Three different types of the loading modes, namely, the story shear, uruform acceleration and vibration mode, were exerted along the direction X and Y, in the construction. The results show that, under the three loading modes, the performance point, the distribution of the plastic lunge and layer displacement angle of the structure are different, but structure meets the requirements for seismic resistance.
Keywords: out-of-code high-rise buildings; the seismic performance; Pushover analysis