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郑州大剧院超限复杂结构抗震设计
袁振军,苏芳迪,毛小东,王国兴,李晓雷,王军,高梅子,李刚
摘 要

(哈尔滨工业大学建筑设计研究院, 哈尔滨 150090)

[摘要]郑州大剧院工程平面布置复杂,各剧场均存在局部楼层错层、楼板开大洞、竖向构件局部转换等不规则情况,属于特别复杂的高层建筑结构。结合《建筑抗震设计规范》(GB 50011—2010)的要求,采用三水准、两阶段设计方法,对主体结构进行了详细的弹性和弹塑性时程分析,对钢结构屋盖和围护桁架进行整体稳定性分析。结果表明,地震作用下主体结构具备较好的承载和变形能力,能够达到小震弹性、中震可修、大震不倒的性能指标。通过罕遇地震作用下的弹塑性时程分析,找出了结构潜在的抗震薄弱部位和薄弱构件,并提出相应的抗震加强措施,为类似工程设计提供参考。

[关键词]超限复杂结构; 抗震性能分析; 弹塑性分析; 抗震加强措施; 钢结构; 网架; 围护桁架

中图分类号:TU242-2文献标识码:A文章编号:1002-848X(2018)12-0050-06

 

Seismic design of out-of-code complex structure of Zhengzhou Grand Theater

Yuan Zhenjun, Su Fangdi, Mao Xiaodong, Wang Guoxing, Li Xiaolei, Wang Jun, Gao Meizi, Li Gang

(The Architectural Design and Research Institute of HIT, Harbin 150090, China)

Abstract:The plane layout of the Zhengzhou Grand Theater project is complicated. There are irregular situations in all theaters of Zhengzhou Grand Theater, such as partial staggered floors, large openings in floors, and partial conversion of vertical components. Zhengzhou Grand Theater is a particularly complex high-rise building structure. Combining with the Code for seismic design of buildings(GB 50011—2010), "three-level and two-stage" design principles were adopted to perform detailed elastic and elasto-plastic time-history analysis of the main structure. The overall stability analysis was performed on the steel grid roof and the enclosure truss. The  results show that under the action of earthquakes, the main structure has good bearing and deformation capabilities, and can reach the performance objectives of elasticity under frequent earthquakes, repairable under fortification earthquakes, and not collapsing under rare earthquakes. Through the elasto-plastic time-history analysis  under the rare earthquakes, potential weak seismic locations and weak components were identified, and corresponding seismic strengthening measures were put forward, which provided a reference for similar engineering designs.

Keywords:out-of-code complex structure; seismic performance analysis; elasto-plastic analysis; seismic strengthening measure; steel structure; grid; enclosure truss

 

作者简介:袁振军,硕士,高级工程师,一级注册结构工程师,Email:yuanloc2004@163.com。

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