大底盘双塔楼超限高层抗震分析和性能化设计
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摘要
介绍了大底盘双塔楼超限高层的设计分析过程,采用SATWE,PMSAP和ETABS三个程序对整体模型和单塔模型进行了多遇地震作用下的反应谱计算和动力弹性时程补充计算,并进行了罕遇地震作用下的静力弹塑性分析。结果表明,结构抗震性能良好,体系安全可行。对受力复杂的连接板进行了应力分析,并推荐了主拉应力表达式的截面设计方法。针对超限的情况,进行了性能化设计,对关键部位进行了定义并采取了加强措施。
This paper presents the analysis of a high-rise building beyond the code limits with twin towers and large chassis and the design process.Overall model and single tower models of the structure under the action of frequently occurred earthquake are analyzed by the programs of SATWE,PMSAP,ETABS.The elastic dynamic time-history analysis and the Pushover analysis under the action of rare earthquake on integral structure are carried out.The results show that the seismic performance of the structure is good,and the structure is safe and reliable.In-plan stresses of the linking slab are analyzed.And it is suggested that the formula for design of linking slab would be the expressions in terms of the principal tensile stress.Performance-based seismic design theory is applied during the structural design,and the key parts of the structure are defined and strengthened.
This paper presents the analysis of a high-rise building beyond the code limits with twin towers and large chassis and the design process.Overall model and single tower models of the structure under the action of frequently occurred earthquake are analyzed by the programs of SATWE,PMSAP,ETABS.The elastic dynamic time-history analysis and the Pushover analysis under the action of rare earthquake on integral structure are carried out.The results show that the seismic performance of the structure is good,and the structure is safe and reliable.In-plan stresses of the linking slab are analyzed.And it is suggested that the formula for design of linking slab would be the expressions in terms of the principal tensile stress.Performance-based seismic design theory is applied during the structural design,and the key parts of the structure are defined and strengthened.
引文
[1]北京金土木软件技术有限公司.ETABS中文版使用指南[M].北京:中国建筑工业出版社,2004. Civil King Software Technology Co,.Ltd.ETABS Guide by Chinese[M].Beijing:China Architecture & Building Press,2004.(in Chinese)
[2]吕西林.高层建筑结构[M].武汉:武汉理工大学出版社,2003. Lu Xilin.Structural of high-rise building[M].Wuhan: Wuhan University of Technology Press,2003. (in Chinese)
[3]扶长生,刘春明,李永双,等.高层建筑薄弱连接混凝土楼板应力分析及抗震设计[J].建筑结构, 2008,38(03):106-110. Fu Changsheng,Liu Chunming,Li Yongshuang,et al.Structural seismic design and analysis of linking RC slain tall-building[J].Building Structure,2008, 38(03):106-110.(in Chinese)
[4]魏琏,王森.水平地震作用下大底盘多塔楼结构抗扭设计方法[J].建筑结构,2005,8:3-7. Wei Lian,Wang Shen.Torsional design method of multi-tower structural under horizontal earthquake action [J].Building Structure,2005,8:3 -7.(in Chinese)
[5]魏清,沈蒲生.高层双塔结构的地震反应[J].科学技术与工程,2006,6(17):2719-2723. Wei Qin,Shen Pusheng.Seismic response of tall buildings with two towers[J].Science Technology and Engineering,2006,6(17):2719-2723.(in Chinese)
[2]吕西林.高层建筑结构[M].武汉:武汉理工大学出版社,2003. Lu Xilin.Structural of high-rise building[M].Wuhan: Wuhan University of Technology Press,2003. (in Chinese)
[3]扶长生,刘春明,李永双,等.高层建筑薄弱连接混凝土楼板应力分析及抗震设计[J].建筑结构, 2008,38(03):106-110. Fu Changsheng,Liu Chunming,Li Yongshuang,et al.Structural seismic design and analysis of linking RC slain tall-building[J].Building Structure,2008, 38(03):106-110.(in Chinese)
[4]魏琏,王森.水平地震作用下大底盘多塔楼结构抗扭设计方法[J].建筑结构,2005,8:3-7. Wei Lian,Wang Shen.Torsional design method of multi-tower structural under horizontal earthquake action [J].Building Structure,2005,8:3 -7.(in Chinese)
[5]魏清,沈蒲生.高层双塔结构的地震反应[J].科学技术与工程,2006,6(17):2719-2723. Wei Qin,Shen Pusheng.Seismic response of tall buildings with two towers[J].Science Technology and Engineering,2006,6(17):2719-2723.(in Chinese)
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