含少量抗震墙的RC框架结构位移限值探讨
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摘要
基于位移的抗震设计是实现基于性能的抗震设计的最有效途径,我国规范对不同结构、不同抗震等级的建筑提出了相应的位移限值。但是随着人们对建筑功能的要求提高,含少量抗震墙的框架结构越来越多,此类结构的层间位移控制限值问题一直困扰着结构工程师。文中以实际工程计算为例,探讨了如何分类含少量抗震墙的框架结构,建议此类结构在多遇地震作用下,可以允许抗震墙出现一定的开裂,其抗侧刚度出现一定退化。结合ABAQUS有限元分析软件得到的剪力墙刚度退化规律,利用ETABS有限元分析软件对少墙框架结构进行整体分析,提出了此类结构的层间位移角的控制方法。
Displacement-based seismic design is one of effective performance-based seismic design methods. Design codes specify the displacement limits for various structures in China.For different functional requirements, there are more and more RC frame buildings with few shear walls.How to control the seismic displacement of this type of structures becomes a problem for structural engineers.A new method is proposed to classify frame structures with few shear walls.The shear walls in these structures are allowed to crack under frequently -occurred earthquakes,and therefore,existing stiffness degradation.Based on the ABAQUS and ETABS finite element analyses,the limit for inter-story displacement of frame structures with few shear walls was summarized.
Displacement-based seismic design is one of effective performance-based seismic design methods. Design codes specify the displacement limits for various structures in China.For different functional requirements, there are more and more RC frame buildings with few shear walls.How to control the seismic displacement of this type of structures becomes a problem for structural engineers.A new method is proposed to classify frame structures with few shear walls.The shear walls in these structures are allowed to crack under frequently -occurred earthquakes,and therefore,existing stiffness degradation.Based on the ABAQUS and ETABS finite element analyses,the limit for inter-story displacement of frame structures with few shear walls was summarized.
引文
[1]中华人民共和国住房和城乡建设部.GB 50010—2010混凝土结构设计规范[S].北京:中国建筑工业出版社,2010. Ministry of Housing and Urban-Rural Construction of the People's Republic of China.GB 50010—2010 Code for design of concrete structures[S].Beijing: China Architecture and Building Press,2010.(in Chinese)
[2]中华人民共和国住房和城乡建设部.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,2010. Ministry of Housing and Urban-Rural Construction of the People's Republic of China.JGJ 3—2010 Technical specification for concrete structures of tall building [S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[3]朱炳寅.对少量剪力墙框架结构的理解与设计建议——新《抗规》学习体会之一[J].建筑结构, 2011,41(1):5-7. Zhu Bingyin.Understanding and design suggestions on frame structures with few shear walls[J].Building Structure,2011,41(1):5-7.(in Chinese).
[4]董德胜.含少量抗震墙的RC框架结构地震反应位移限值研究[D].上海:同济大学,2004. Dong Desheng.Research on the seismic deformation limits of RC frame structure with few shear walls[D]. Shanghai;Tongji University,2004.(in Chinese).
[5]章红梅,吕西林.粘钢加固钢筋混凝土剪力墙抗震性能试验研究[J].结构工程师,2007,23(1):72- 76. Zhang Hongmei,Lu Xilin.Experiment study on seismic behavior of reinforced concrete walls strengthened by bonded steel[J].Structural Engineers,2007,23 (1):72-76.(in Chinese)
[6]章红梅.剪力墙结构基于性态的抗震设计方法研究[D].上海:同济大学,2007. Zhang Hongmei.Study on the performance-based seismic design method for shear wall structures[D]. Shanghai:Tongji University,2007.(in Chinese)
[2]中华人民共和国住房和城乡建设部.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,2010. Ministry of Housing and Urban-Rural Construction of the People's Republic of China.JGJ 3—2010 Technical specification for concrete structures of tall building [S].Beijing:China Architecture and Building Press,2010.(in Chinese)
[3]朱炳寅.对少量剪力墙框架结构的理解与设计建议——新《抗规》学习体会之一[J].建筑结构, 2011,41(1):5-7. Zhu Bingyin.Understanding and design suggestions on frame structures with few shear walls[J].Building Structure,2011,41(1):5-7.(in Chinese).
[4]董德胜.含少量抗震墙的RC框架结构地震反应位移限值研究[D].上海:同济大学,2004. Dong Desheng.Research on the seismic deformation limits of RC frame structure with few shear walls[D]. Shanghai;Tongji University,2004.(in Chinese).
[5]章红梅,吕西林.粘钢加固钢筋混凝土剪力墙抗震性能试验研究[J].结构工程师,2007,23(1):72- 76. Zhang Hongmei,Lu Xilin.Experiment study on seismic behavior of reinforced concrete walls strengthened by bonded steel[J].Structural Engineers,2007,23 (1):72-76.(in Chinese)
[6]章红梅.剪力墙结构基于性态的抗震设计方法研究[D].上海:同济大学,2007. Zhang Hongmei.Study on the performance-based seismic design method for shear wall structures[D]. Shanghai:Tongji University,2007.(in Chinese)
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