（1 清华大学土木工程系，北京 100084； 2 中国航空规划建设发展有限公司，北京 100120）
［摘要］为充分考察浦东大修机库结构抗震性能，分别采用弹性时程分析法和弹塑性时程分析法计算了小震和罕遇地震作用下机库结构的反应。采用ABAQUS和SAP2000两个软件进行弹性时程分析；弹塑性时程分析采用ABAQUS完成，分析中采用ABAQUS提供的材料本构模型和用户自定义材料本构模型。计算结果表明：小震作用下，两个软件计算结果接近，机库结构的钢筋混凝土柱的柱顶最大位移角均小于规范限值。大震作用下，柱顶最大位移角远小于规范限值，钢筋混凝土柱有限屈服，屈服位置在柱的底部或中部与支撑连接处；绝大多数屋盖钢网架杆件保持弹性，并且应力比不超过0.87，仅有少量网架杆件进入屈服，屈服的网架杆件主要分布在与下部混凝土柱相连接的附近；柱间钢支撑屈服较多。
［关键词］浦东大修机库；地震反应；弹塑性时程分析；钢筋混凝土柱；大跨网架
Elasto-plastic time history analyses of STARCO overhaul hangar
Pan Peng1, Qian Jiaru1, Zhou Yibin1, Shen Shungao2, Zhao Boyou2, Zhu Dan2(1 Civil Engineering Department of Tsinghua University, Beijng 100084, China; \=2 China Aviation Planning and Construction Development Co., Ltd., Bejing 100120, China)
Abstract:To investigate the safety of the Pudong Maintenance Hangar, elasto-plastic time history analyses were conducted-Elastic time history analyses were used to investigate the behavior of the structure subjected to small earthquakes, while elasto-plastic time history analyses were used for large earthquakes. Elastic time history analysis used SAP2000 and ABAQUS programs, and the results obtained form the two programs were compared. ABAQUS in which user material were embedded through the user subroutines, were used for elasto-plastic analyses. Major conclusions obtained from this study are as follows: (1) the results of elastic analysis obtained from SAP2000 and ABAQUS are very similar. (2) Under the small earthquakes, all members of the structure are elastic, and the maximum story drift angle satisfies the requirement given in the design code. (3) Under the large earthquakes, the maximum story drift angle is much smaller than allowable value given in the design code; some concrete columns get yield at the bottom or middle locations; most members of the space grid roof keep in elastic with the stress ratio no higher than 0.87, and only few, which locate at the joint with the concrete columns, get yield; some braces sustain relatively serious plastic under the large earthquakes.
Keywords:Pudong Overhaul Hangar; earthquake response; elasto-plastic time history analyses;  RC column; space frame
作者简介：潘鹏(1976-)，男，博士，副教授，清华大学工程结构实验室副主任，Email:
panpeng@tsinghua.edu.cn。
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