典型高层RC框剪结构抗连续倒塌性能分析*
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(1 清华大学土木工程安全与耐久教育部重点实验室， 北京 100084；2 北京工业大学城市与工程安全减灾教育部重点实验室， 北京 100124)［摘要］通过对两栋具有不同典型结构布置形式的15层钢筋混凝土(RC)框剪结构的抗连续倒塌性能的分析，检验了按照现行《混凝土结构设计规范》（GB 50010—2010）设计的高层RC框剪结构的抗连续倒塌能力。采用线性静力拆除构件法对其中一栋结构进行抗连续倒塌设计，验证线性静力拆除构件法用于高层RC框剪结构抗连续倒塌设计时的安全性和经济性。分析结果表明，高层RC框剪结构的抗连续倒塌能力存在显著差异。如果结构中的剪力墙相互连接贯通，在部分剪力墙发生初始破坏的情况下，剩余剪力墙能够很好地完成内力重分布，抵抗连续倒塌的发生。框架部分的抗连续倒塌性能取决于结构设计的冗余度：如果结构设计较保守，则框架部分的抗连续倒塌能力较强，可以满足抗连续倒塌的要求；若设计按规范下限要求进行，则框架部分的抗连续倒塌能力存在不足，需要进行专门的抗连续倒塌设计。清华大学建议的线性静力拆除构件设计方法对结构进行抗连续倒塌设计是安全可靠的，并且具有一定的经济性。［关键词］连续倒塌; 高层框剪结构; 拆除构件法中图分类号：TU375 文献标识码：A 文章编号：1002-848X(2013)23-0053-04Analysis on progressive collapse resistance of typical high-rise RC frame-shear wall structuresRen Peiqi1, Li Yi2, Lu Xinzheng1, Ye Lieping1(1 Key Laboratory of Civil Engineering Safety and Durability of Ministry of Education, Tsinghua University, Beijing 100084, China; 2 Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education, Beijing University of Technology, Beijing 100124, China)Abstract: In order to investigate the progressive collapse resistance of high-rise reinforced concrete frame-shear wall structures designed according to Code for design of concrete structures（GB 50010—2010), two 15-storey RC frame-shear wall building models with different typical structural layouts were analyzed. Linear static alternative load path method was applied for the progressive collapse prevention design of a building and the reliability and economical efficiency of this method to be used for the collapse prevention design for high-rise RC frame-shear wall structures were verified. The results show that significant differences exist in the progressive collapse resistance of high-rise RC frame-wall structures. When parts of the shear-walls are destroyed, if the shear-walls are connected to each other, then the residual structures will have good ability to redistribute the internal forces to resist progressive collapse. Progressive collapse resistance of the frame part depends on the redundancy of the structural design. If the design is conservative, then the frame has good performance in progressive collapse prevention. However, if the design follows the minimum requirement of Chinese design specification, the frame cannot efficiently resist progressive collapse and needs additional progressive collapse prevention design. The linear static alternative load path method proposed by Tsinghua University has enough safety and a certain economy to be used in the progressive collapse prevention design of structures.Keywords: progressive collapse; high-rise frame-shear wall structure; alternative load path method*国家重点基础研究发展计划（973）（2012CB719703），铁道部科技研究开发计划重点课题（2012G003-j），清华大学自主研究项目（2012THZ06），教育部新世纪优秀人才支持计划资助（NCET-10-0528）。作者简介：任沛琪，硕士研究生，Email: huixin0928@163.com。参考文献［1］梁益, 陆新征, 缪志伟,等. 结构的连续倒塌: 规范介绍和比较［C］//第六届全国工程结构安全防护学术会议论文集. 洛阳，2007：195-200.［2］李易, 叶列平, 陆新征. 基于能量方法的RC框架结构连续倒塌抗力需求分析I：梁机制［J］. 建筑结构学报, 2011, 32(11): 1-8.［3］李易, 陆新征, 叶列平. 基于能量方法的RC框架结构连续倒塌抗力需求分析II：悬链线机制［J］. 建筑结构学报, 2011, 32(11): 9-16.［4］GSA2003 Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects［S］. US General Services Administration, 2003.［5］Department of Defense. Unified Facilities Criteria (UFC): Design of structures to resist progressive collapse［S］. Washington, D.C., 2010.［6］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.［7］陆新征, 叶列平, 缪志伟，等. 建筑抗震弹塑性分析——原理、模型与在ABAQUS, MSC.MARC和SAP2000上的实践［M］. 北京: 中国建筑工业出版社, 2009.［8］陆新征,李易,叶列平.混凝土结构防连续倒塌理论与设计方法研究［M］.北京:中国建筑工业出版社,2011.
