基于分灾模式的框架结构抗震加固设计方法
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摘要
为探讨基于分灾模式抗震加固思想的可行性,本文在一个5层3跨的混凝土框架结构两端分别添加附加框架和分灾框架后,对结构进行pushover分析,以研究加固前后结构的抗震性能。分析结果表明:当采用与原结构有良好匹配关系的分灾框架时,可以将原结构的抗震能力由7度提高到8度,分灾框架可以先于原结构破坏,体现了基于分灾模式抗震加固的思想;同时说明了分灾框架应具有合理的结构形式,以保证其有足够的结构延性。本文的结论,可以为基于分灾模式抗震加固方法的深入研究提供参考。
In order to discuss the feasibility of seismic retro fi tting based on damage-reduction mode,this paper analyses a five-story frame s tructure with three crosses which adds damage-reduction frame in each side,by using pushover analysis to compare the seismic performance.The studies show tha t a reasonable damage-reduction frame which mate the original structure will im prove the seismic capability of original structure from seven degree to eight de gree,damage-reduction frame will damage fast than original structure which sho ws the theme of seismic retrofitting based on damage-reduction mode,and explai ns that the damage-reduction frame should have reasonable form which ensures st ringiness of the structure.The conclusion gives reference to the intensive study of seismic retrofitting based on damage-reduction mode.
In order to discuss the feasibility of seismic retro fi tting based on damage-reduction mode,this paper analyses a five-story frame s tructure with three crosses which adds damage-reduction frame in each side,by using pushover analysis to compare the seismic performance.The studies show tha t a reasonable damage-reduction frame which mate the original structure will im prove the seismic capability of original structure from seven degree to eight de gree,damage-reduction frame will damage fast than original structure which sho ws the theme of seismic retrofitting based on damage-reduction mode,and explai ns that the damage-reduction frame should have reasonable form which ensures st ringiness of the structure.The conclusion gives reference to the intensive study of seismic retrofitting based on damage-reduction mode.
引文
[1]JGJ 116-2009,建筑抗震加固技术规程[S].
[2]曲哲,叶列平.附加子结构抗震加固方法及其在日本的应用[J].建筑结构,2010,40(5):55-58.
[3]Kabeyasawa Toshikazu,Kabeyasawa Toshimi,Matsu-mori Taizo,et al.Shake table test on a full-scale threestory reinforced concrete building structure[J].Jour-nal of Structural and Construction Engineering,Trans-actions of AIJ,2008,73(632):1833-1840.
[4]Wada Akira,Qu Zhe,Ito Hiroshi,et al.Seismic ret-rofitting using rocking walls and steel dampers[C]∥ATC&SEI Conference on Improving the Seismic Per-formance of Existing Building and Other Structures,San Francisco,2009.
[5]翁大根,张瑞甫,张世明,等.基于性能和需求的消能减震设计方法在震后框架结构加固中的应用[J].建筑结构学报,2010,(S2):66-74.
[6]胡大柱,尤毓慧,邵宏政.屈曲约束耗能支撑在教学楼加固工程中的应用[J].工程抗震与加固改造,2009,31(6):88-92.
[7]程耿东,蔡文学.基于分灾模式的结构防灾减灾设计概念初探[J].自然灾害学报,1996,5(2):22-27.
[8]杨迪雄,李刚.结构分灾抗震设计:概念和应用[J].世界地震工程,2007,23(12):95-101.
[9]苏原,赵崇丰,吴晟.基于分灾模式的抗震加固设计概念初探[J].建筑结构,2010,40(s2):103-106.
[10]李国强,李杰,苏小卒.建筑结构抗震设计[M].北京:中国建筑工业出版社,2005.
[11]GB50011-2010,建筑抗震设计规范[S].Design for Frame Structures Seismic Retrofitting Basedon Damage-reduction ModeSU Yuan1,WU Sheng1,ZHAO Chong-feng2(1.a.School of Civil Engineering and Mechanics;b.Hubei Key Laboratory of Control Structure,Huazhong University of Science and Technology,Wuhan 430074,China;
[2]曲哲,叶列平.附加子结构抗震加固方法及其在日本的应用[J].建筑结构,2010,40(5):55-58.
[3]Kabeyasawa Toshikazu,Kabeyasawa Toshimi,Matsu-mori Taizo,et al.Shake table test on a full-scale threestory reinforced concrete building structure[J].Jour-nal of Structural and Construction Engineering,Trans-actions of AIJ,2008,73(632):1833-1840.
[4]Wada Akira,Qu Zhe,Ito Hiroshi,et al.Seismic ret-rofitting using rocking walls and steel dampers[C]∥ATC&SEI Conference on Improving the Seismic Per-formance of Existing Building and Other Structures,San Francisco,2009.
[5]翁大根,张瑞甫,张世明,等.基于性能和需求的消能减震设计方法在震后框架结构加固中的应用[J].建筑结构学报,2010,(S2):66-74.
[6]胡大柱,尤毓慧,邵宏政.屈曲约束耗能支撑在教学楼加固工程中的应用[J].工程抗震与加固改造,2009,31(6):88-92.
[7]程耿东,蔡文学.基于分灾模式的结构防灾减灾设计概念初探[J].自然灾害学报,1996,5(2):22-27.
[8]杨迪雄,李刚.结构分灾抗震设计:概念和应用[J].世界地震工程,2007,23(12):95-101.
[9]苏原,赵崇丰,吴晟.基于分灾模式的抗震加固设计概念初探[J].建筑结构,2010,40(s2):103-106.
[10]李国强,李杰,苏小卒.建筑结构抗震设计[M].北京:中国建筑工业出版社,2005.
[11]GB50011-2010,建筑抗震设计规范[S].Design for Frame Structures Seismic Retrofitting Basedon Damage-reduction ModeSU Yuan1,WU Sheng1,ZHAO Chong-feng2(1.a.School of Civil Engineering and Mechanics;b.Hubei Key Laboratory of Control Structure,Huazhong University of Science and Technology,Wuhan 430074,China;
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