D型耗能器偏心支撑结构的抗震性能试验研究
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摘要
偏心支撑结构是一种高烈度地震区高层建筑钢结构合理的抗侧力体系,本文针对目前偏心支撑结构存在的不足,提出一种新型的框架支撑形式——耗能器偏心支撑;并将该单斜杆(D型)耗能器偏心支撑与支撑斜杆上不加设耗能器的D型偏心支撑结构进行了对比试验。验证了该新型框架支撑形式不仅可以减少耗能梁段吸收的地震能量,而且可以减小耗能梁段的破坏程度,从而减少震后修复工作量;它具有很好的变形能力和足够的抗侧移能力。文中同时给出了设计方法,并提出了改进措施。
As a conventional resisting force system,eccentrically braced steel frame could meet the capacity and design demand,but the general application is limited,because it needs a great deal steel for larger section of beam,column and brace,the repairing work of beam and floor after earthquake is heavy,and the cost is high.This paper suggests a new braced steel frame system,energy dissipating eccentrically brace,adding an endergonic device in diagonal brace.The experimental data of new and conventional D-type eccentrically braced steel frame system were achieved by two specimens under cyclic loading.Results indicate that the new system may put off yielding,lighten earthquake input energy and breakage of the link,lighten repairing load after earthquake,and have preferable ductility and enough lateral stiffness.Meanwhile,some design and amended measures were recommended for the new system.
As a conventional resisting force system,eccentrically braced steel frame could meet the capacity and design demand,but the general application is limited,because it needs a great deal steel for larger section of beam,column and brace,the repairing work of beam and floor after earthquake is heavy,and the cost is high.This paper suggests a new braced steel frame system,energy dissipating eccentrically brace,adding an endergonic device in diagonal brace.The experimental data of new and conventional D-type eccentrically braced steel frame system were achieved by two specimens under cyclic loading.Results indicate that the new system may put off yielding,lighten earthquake input energy and breakage of the link,lighten repairing load after earthquake,and have preferable ductility and enough lateral stiffness.Meanwhile,some design and amended measures were recommended for the new system.
引文
[1]Okazaki T.Seismic performance of link-to-column connections in steel eccentrically braced frames[D].Austin:The University of Texas of Austin,2004.
[2]钱稼茹,陈茂盛,张天申,等.偏心支撑钢框架拟动力地震反应试验分析[J].工程抗震,1992(1):15-18.
[3]郭仕群.使用偏心支撑减小不规则高层建筑的扭转振动效应[J].地震工程与工程振动,2005,25(3):76-80.
[4]赵宝成,顾强.单斜杆偏心支撑钢框架在循环荷载作用下的滞回性能分析[J].苏州科技学院学报:工程技术版,2005,18(3):10-14.
[5]GB 50011—2001建筑抗震设计规范[S].
[6]郝际平,潘秀珍,谢振清.一种偏心支撑.中国,ZL200610043128.1,[P].2008-02-06.
[7]郝际平,潘秀珍.用于偏心支撑结构中剪切型耗能梁段与柱连接的加盖板节.中国,ZL200720032148.9[P].2008-05-14.
[8]申林,蔡益燕,郁银泉.偏心支撑钢框架设计方法[J].建筑结构,2002(2):13-16.
[9]欧进萍,吴斌,龙旭.结构被动耗能减振效果的参数影响[J].地震工程与工程振动,1998,18(1):60-70.
[10]欧进萍,吴斌,龙旭.耗能减振结构的抗震设计方法[J].地震工程与工程振动,1998;18(2):98-107.
[11]JGJ 101—96建筑抗震试验方法规程[S].
[2]钱稼茹,陈茂盛,张天申,等.偏心支撑钢框架拟动力地震反应试验分析[J].工程抗震,1992(1):15-18.
[3]郭仕群.使用偏心支撑减小不规则高层建筑的扭转振动效应[J].地震工程与工程振动,2005,25(3):76-80.
[4]赵宝成,顾强.单斜杆偏心支撑钢框架在循环荷载作用下的滞回性能分析[J].苏州科技学院学报:工程技术版,2005,18(3):10-14.
[5]GB 50011—2001建筑抗震设计规范[S].
[6]郝际平,潘秀珍,谢振清.一种偏心支撑.中国,ZL200610043128.1,[P].2008-02-06.
[7]郝际平,潘秀珍.用于偏心支撑结构中剪切型耗能梁段与柱连接的加盖板节.中国,ZL200720032148.9[P].2008-05-14.
[8]申林,蔡益燕,郁银泉.偏心支撑钢框架设计方法[J].建筑结构,2002(2):13-16.
[9]欧进萍,吴斌,龙旭.结构被动耗能减振效果的参数影响[J].地震工程与工程振动,1998,18(1):60-70.
[10]欧进萍,吴斌,龙旭.耗能减振结构的抗震设计方法[J].地震工程与工程振动,1998;18(2):98-107.
[11]JGJ 101—96建筑抗震试验方法规程[S].
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