中海油能源开发研究院项目超限结构设计与分析
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（北京市建筑设计研究院有限公司, 北京 100045）［摘要］中海油能源开发研究院项目为弱连接四塔连体结构，存在扭转不规则、凹凸不规则、楼板不连续、竖向抗侧力构件不连续、大跨连体多项超限。介绍了设计中所采取的针对超限的计算及构造措施；采用两个不同力学模型的空间分析程序进行多遇地震、设防烈度地震、罕遇地震下的对比计算分析,详细对比了单塔模型和四塔连体整体模型的计算结果；大跨连接体两端均采用弹性滑动支座与主体结构相连，以减小地震作用下连接体刚度与质量对主体结构的影响；采用罕遇地震时程分析校核以多遇地震为基础计算的罕遇地震等效支座位移，进行支座设计；同时针对结构中不同的薄弱部位做了相应的局部分析，采取了对应的补强措施。［关键词］连体结构; 超限分析; 包络设计; 性能目标; 支座位移中图分类号：TU318 文献标识码：A 文章编号：1002-848X(2014)20-0021-06Out-of-code structural design and analysis of CNOOC Energy Development Research InstituteSun Lei, Pang Bo, Zhang Pengzhan, Xu Bin, Zhang Chunnong, Guo Jie, Ding Weimin, Sun Chunling(Beijing Institute of Architectural Design, Beijing 100045, China)Abstract:As a four-tower weakly connected building, CNOOC Energy Development Research Institute has several out-of-code items as torsion irregularity, irregular plane, discontinuous floor, discontinuity of vertical lateral-resistance members and the large-span connected structure. Calculation and structural measures in design corresponding to the out-of-code items were introduced. Spatial analysis procedures of two different mechanical models were used to carry out comparative computational analyses under the frequent earthquake, precautionary earthquake and rare earthquake respectively and a detailed comparison of the calculated results of a single tower model and overall model with four towers was made. Both ends of the large-span connected structure were connected to the main body structure with elastic sliding bearings to reduce the impact of connected stiffness and mass on the main structure under the earthquake. Equivalent bearing displacement under the rare earthquake calculated by parameters of frequent earthquake was checked by time-history analysis under the rare earthquake to design the bearing. While some local analyses were carried out on different weak parts of the structure, and the corresponding strengthening measures were taken.Keywords:connected structure; out-of-code analysis; envelope design; performance objective; bearing displacement作者简介：孙磊，硕士，工程师，Email：sunlei@vip.163.com。参考文献［1］GB 50011—2010 建筑抗震设计规范［S］.北京：中国建筑工业出版社，2010.［2］JGJ 3—2010 高层建筑混凝土结构技术规程［S］.北京：中国建筑工业出版社，2011.［3］GB 50010—2010 混凝土结构设计规范［S］.北京：中国建筑工业出版社，2011.
