娄荣，陈威文，卓春笑，戴杭亮

（华汇工程设计集团，绍兴 312000）

 

[摘要] 详细介绍了某四塔高位连体结构的抗震设计。连接体采用钢结构平面桁架体系，两个方向跨度均超过58m，属超限结构。根据连接体与筒体之间的不同连接方式，将分析模型简化为双塔连体结构。结合工程特点及超限情况，确定各构件的性能化抗震设计目标。对连接体及筒体角柱进行了中震弹性设计，并对连接体单独进行了三水准下竖向地震时程分析。在进行多遇水平地震分析时，采用两组地震波记录和一组人工波进行时程分析，并采用CQC组合进行了谱分析，结果表明各项指标均在规范允许的范围以内。采用基于能力谱法的Pushover方法研究了结构的弹塑性破坏机制，结果表明现行设计能够满足性能化设计目标。

[关键词] 连体结构；性能化抗震设计；连接体；Pushover方法

中图分类号：TU318-82文献标识码：A文章编号：1002-848X(2012)11-0044-05

 

Lou Rong, Chen Weiwen, Zhuo Chunxiao, Dai Hangliang

（Huahui Engineering Design Group Co., Ltd., Shaoxing 312000, China）

 

Abstract: Seismic design of a four-tower high-position connected structure was illustrated. With a structural system of steel planar truss, the span of connecting structure is more than 58m. The model was simplified to a double-tower connected structure, according to connection property between steel planar truss and tower. Performance objectives of seismic design were proposed with consideration of the design beyond code limits. Elastic design under moderate earthquake was carried out for connecting structure and corner columns. Vertical earthquake analysis of three-level was carried out. During normal seismic analysis, two natural ground acceleration records and one artificial record were applied in time-history analysis, and CQC combination was applied in the response spectrum analysis. It shows that the results can satisfy the code requirements. During ultimate seismic analysis, Pushover method based on capacity spectrum method was applied, as shown in the results, the structure can achieve performance objectives.

Keywords: connected structure; performance-based seismic design; connecting structure; Pushover method

作者简介：娄荣，博士，工程师，Email：ghost261412@163.com.

 

［1］ 超限高层建筑工程抗震设防专项审查技术要点［S］.2010.

［2］ 黄坤耀.双塔连体结构的静力、抗震和抗风分析［D］.杭州：浙江大学,2004.

［3］ 徐培福, 傅学怡, 王翠坤, 等. 复杂高层建筑结构设计［M］.北京：中国建筑工业出版社, 2005.

［4］ JGJ 3-2010高层建筑结构混凝土技术规程［S］. 北京：中国建筑工业出版社，2011.

［5］ American Society of Civil Engineers. FEMA 356 Prestandard and commentary for the seismic rehabilitation of buildings［S］. Washington D.C.: Federal Emergency Management Agency, 2000.

［6］ 侯书利, 张南, 李俊峰,等. 某复杂连体高层结构抗震设计［J］.建筑结构，2010，40(10)：26-29.

［7］ GB 50011-2010建筑抗震设计规范［S］. 北京：中国建筑工业出版社，2010.

［8］ 芮佳, 王毓麟.新天地国际大厦基于目标位移的Pushover分析［J］.建筑结构，2010，40(11)：45-48.

［9］ 汪大绥, 贺军利, 张凤新.静力弹塑性分析(Pushover Analysis)的基本原理和计算实例［J］.世界地震工程，2004，20(1)：45-53.