段瑾，余志伟，方礼凯

（UA国际上海正轶建筑设计有限公司， 上海 200433） 

［摘要］基于现有的研究理论，对超高层结构各主要受力构件的弹塑性参数设置进行探讨。在对超高层结构进行动力弹塑性时程分析时，采用“直接法”和“间接法”两种方法对结构“大震不倒”进行判断，并对两种方法按包络取值。对结构损伤提出了一种新的基于《建筑抗震设计规范》（GB 50011—2010）的判别方法，并与美国FEMA 356规范判别方法进行对比。以苏州绿地中央广场项目办公楼为工程背景，采用PERFORM-3D软件对其进行7度大震下动力弹塑性时程分析，从宏观上评价该结构体系的抗震性能。通过对比发现，《建筑抗震设计规范》（GB 50011—2010）对结构抗震性能评估与美国FEMA 356规范相比更加偏于安全。

［关键词］动力弹塑性时程分析； 大震不倒； PERFORM-3D软件； 抗震性能评估

中图分类号：TU313.3文献标识码：A文章编号：1002-848X(2016)01-0024-06

Study on dynamic elastic-plastic analysis method of a superhigh-rise building

Duan Jin, Yu Zhiwei, Fang Likai

(UA Shanghai Zhengyi Architectural Design Co.,  Ltd.,  Shanghai 200433, China)

Abstract:Some discussions on the setting of elastic-plastic parameters of main components were included based on current theories. In dynamic elastic-plastic time-history analysis of the structure, two methods of“direct method” and “indirect method” were adopted to estimate that if the seismic fortification standard of “no collapse under rare earthquake” can be achieved. Envelop values of two methods were obtained. A new discriminated method about the structure damage was proposed based on Code for seismic design of buildings(GB 50011—2010).The new evaluation method was compared with the method of American FEMA 356 code. Suzhou Green Central Plaza project was selected as research object. The dynamic elastic-plastic time-history analyses on the super high-rise building under the rare earthquake of 7 degree intensity were carried out by PERFORM-3D software to evaluate the seismic performance of the structural system. The comparison between seismic performance evaluation of Code for seismic design of buildings(GB 50011—2010) and American FEMA 356 code indicates that the former is safer.

Keywords:dynamic elastic-plastic time-history analysis; no collapse under rare earthquake; PERFORM-3D software； seismic performance evaluation

作者简介：段瑾，硕士，工程师，Email:duanjins@163.com。