火电厂主厂房结构异型节点抗震性能试验研究
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摘要
为掌握火电厂新型主厂房框排架结构中异型节点的抗震性能,对由两侧梁高不等、柱截面突变及错层引起的异型节点进行了6个1/5比例试件拟静力试验研究及含有该类节点的空间结构试验研究。研究了节点的受力破坏模式、滞回耗能性能、强度和刚度退化规律及承载力计算方法。结果表明:该类节点初裂与极限荷载较常规节点显著降低,易发生小核心剪切破坏和柱端压弯剪复合破坏;异型节点中剪力墙的设置可以有效改善节点的抗震性能,提高其延性和耗能能力;通过分析节点受力机理并根据不同的破坏形态,提出针对SRC异型节点的承载力计算方法,为该类节点的实际设计提供参考。
In order to master the seismic performance of abnormal joints of the new main buildings in thermal power plant,pseudo-static tests on six 1/5-scaleed specimens of abnormal joints caused by highly variable of beams,column section mutations and split-level structure have been performed as well as the spatial model test.The study was focused on the failure mode,hysteretic behavior and energy dissipation capability,strength and stiffness degradation law and bearing capacity calculation method.The experimental results show that the cracking load and the ultimate load of irregular joints obviously decrease when compared with regular joints,two typical failure modes may occur simultaneously,namely,they are the small core shear failure and column compression-bending-shear combined failure.The shear walls set in the joints can effectively improve the seismic performance and energy dissipation capacity.The calculation method of SRC irregular joints for different failure patterns is proposed.It can provide reference for engineering design.
In order to master the seismic performance of abnormal joints of the new main buildings in thermal power plant,pseudo-static tests on six 1/5-scaleed specimens of abnormal joints caused by highly variable of beams,column section mutations and split-level structure have been performed as well as the spatial model test.The study was focused on the failure mode,hysteretic behavior and energy dissipation capability,strength and stiffness degradation law and bearing capacity calculation method.The experimental results show that the cracking load and the ultimate load of irregular joints obviously decrease when compared with regular joints,two typical failure modes may occur simultaneously,namely,they are the small core shear failure and column compression-bending-shear combined failure.The shear walls set in the joints can effectively improve the seismic performance and energy dissipation capacity.The calculation method of SRC irregular joints for different failure patterns is proposed.It can provide reference for engineering design.
引文
[1]吴涛,刘伯权,邢国华.钢筋混凝土框架变梁异型节点抗震[M].北京:科学出版社,2010:3-4.WU Tao,LIU Boquan,XING Guohua.Seismic behavior of reinforced concrete frame joints with different depth beams[M].Beijing:SciencePress,2010.(in Chinese)
[2]Shin M,LaFave J M.Modeling of cyclic joint shear deformation contributions in RC beam-column Connections to overall frame behavior[J].Structural Engineering and Mechanics,2004,18(5):645-669.
[3]Hwang S J,LeeH J.Analytical model for predicting shear strengths of interior reinforced concrete beam-column joints for seismic resistance[J].ACI Structural Journal,2000,97(1):35-44.
[4]白国良,康灵果,李红星,等.大型火力发电厂SRC框架柱-RC分散剪力墙主厂房混合结构体系抗震性能试验研究[J].土木工程学报,2011,44(9):20-26.BAI Guoliang,KANG Lingguo,LI Hongxing,et al.Experimental study of the seismic performance of hybrid structure of SRC frame columns-RCdisperse shear walls for large thermal power plants[J].China Civil Engineering Journal,2011,44(9):20-26.(in Chinese)
[5]GB50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.GB 50011—2001 Code for Seismic Design of Buildings[S].Beijing:China Architecture and Building Press,2001.(in Chinese)
[6]GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.GB 50010—2002 Code for Design of Concrete Structures[S].Beijing:China Architecture and Building Press,2002.(in Chinese)
[7]郭宏超,郝际平,李峰.半刚接框架-斜加劲钢板剪力墙低周反复荷载试验研究[J].地震工程与工程振动,2011,31(1):54-60.GUO Hongchao,HAO Jiping,LI Feng.Cyclic test of simi-rigid composite steel frame with diagonally stiffened steel plate shear walls[J].Journalof Earthquake Engineering and Engineering Vibration,2011,31(1):54-60.(in Chinese)
[8]陈鑫,阎石,季保建.高强钢筋高强混凝土框架结构滞回耗能分析[J].地震工程与工程振动,2011,31(3):83-90.CHEN Xin,YAN Shi,JI Baojian.Hysteretic energy dissipation of high-strength concrete frame structure reinforced with pre-stressed rebars[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(3):83-90.(in Chinese)
[9]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001:219-220.YAO Qianfeng,CHEN Ping.Civil engineering structure experiment[M].Beijing:China Architecture and Building Press,2001.(in Chinese)
[10]薛建阳,赵鸿铁,杨勇.型钢混凝土节点抗震性能及构造方法[J].世界地震工程,2002,18(2):61-64.XUE Jianyang,ZHAO Hongtie,YANG Yong.Seismic behavior and construction method of steel reinforced concrete joints[J].World EarthquakeEngineering,2002,18(2):61-64.(in Chinese)
[11]陈宗平,薛建阳,赵鸿铁,等.型钢混凝土异形柱抗震性能试验研究[J].建筑结构学报,2007,28(3):53-61.CHEN Zongping,XUE Jianyang,ZHAO Hongtie,et al.Experimental study on seismic behavior of steel reinforced concrete special-shaped columns[J].Journal of Building Structures,2007,28(3):53-61.(in Chinese)
[12]傅剑平,张川,陈滔,等.钢筋混凝土抗震框架节点受力机理及轴压比影响的试验研究[J].建筑结构学报,2006,27(3):67-76.FU Jianping,ZHANG Chuan,CHEN Tao,et al.Experimental investigation of shear mechanism and effect of axial-compression ratio on joints inearthquake-resistant reinforced concrete frames[J].Journal of Building Structures,2006,27(3):67-76.(in Chinese)
[13]Hiroshi Kuramoto,Isao Nishiyama.Seismic performance and stress transferring mechanism of through-column-type joints for composite reinforced[J].Journal of Structural Engineering,2004,130(2):352-360.
[14]JGJ138—2001型钢混凝土组合结构技术规程[S].北京:中国建筑工业出版社,2001.JGJ 138—2001 Technical Specification for Steel Reinforced Concrete Composite Structures[S].Beijing:China Architecture and Building Press,2001.(in Chinese)
[15]李红星.钢筋混凝土框架异型节点抗震性能试验研究[D].西安:西安建筑科技大学,2002.LI Hongxing.Aseismatic properties research on abnormal reinforced concrete frame joints[D].Xi'an:Xi'an University of Architecture and Technol-ogy,2002.(in Chinese)
[2]Shin M,LaFave J M.Modeling of cyclic joint shear deformation contributions in RC beam-column Connections to overall frame behavior[J].Structural Engineering and Mechanics,2004,18(5):645-669.
[3]Hwang S J,LeeH J.Analytical model for predicting shear strengths of interior reinforced concrete beam-column joints for seismic resistance[J].ACI Structural Journal,2000,97(1):35-44.
[4]白国良,康灵果,李红星,等.大型火力发电厂SRC框架柱-RC分散剪力墙主厂房混合结构体系抗震性能试验研究[J].土木工程学报,2011,44(9):20-26.BAI Guoliang,KANG Lingguo,LI Hongxing,et al.Experimental study of the seismic performance of hybrid structure of SRC frame columns-RCdisperse shear walls for large thermal power plants[J].China Civil Engineering Journal,2011,44(9):20-26.(in Chinese)
[5]GB50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.GB 50011—2001 Code for Seismic Design of Buildings[S].Beijing:China Architecture and Building Press,2001.(in Chinese)
[6]GB50010—2002混凝土结构设计规范[S].北京:中国建筑工业出版社,2002.GB 50010—2002 Code for Design of Concrete Structures[S].Beijing:China Architecture and Building Press,2002.(in Chinese)
[7]郭宏超,郝际平,李峰.半刚接框架-斜加劲钢板剪力墙低周反复荷载试验研究[J].地震工程与工程振动,2011,31(1):54-60.GUO Hongchao,HAO Jiping,LI Feng.Cyclic test of simi-rigid composite steel frame with diagonally stiffened steel plate shear walls[J].Journalof Earthquake Engineering and Engineering Vibration,2011,31(1):54-60.(in Chinese)
[8]陈鑫,阎石,季保建.高强钢筋高强混凝土框架结构滞回耗能分析[J].地震工程与工程振动,2011,31(3):83-90.CHEN Xin,YAN Shi,JI Baojian.Hysteretic energy dissipation of high-strength concrete frame structure reinforced with pre-stressed rebars[J].Journal of Earthquake Engineering and Engineering Vibration,2011,31(3):83-90.(in Chinese)
[9]姚谦峰,陈平.土木工程结构试验[M].北京:中国建筑工业出版社,2001:219-220.YAO Qianfeng,CHEN Ping.Civil engineering structure experiment[M].Beijing:China Architecture and Building Press,2001.(in Chinese)
[10]薛建阳,赵鸿铁,杨勇.型钢混凝土节点抗震性能及构造方法[J].世界地震工程,2002,18(2):61-64.XUE Jianyang,ZHAO Hongtie,YANG Yong.Seismic behavior and construction method of steel reinforced concrete joints[J].World EarthquakeEngineering,2002,18(2):61-64.(in Chinese)
[11]陈宗平,薛建阳,赵鸿铁,等.型钢混凝土异形柱抗震性能试验研究[J].建筑结构学报,2007,28(3):53-61.CHEN Zongping,XUE Jianyang,ZHAO Hongtie,et al.Experimental study on seismic behavior of steel reinforced concrete special-shaped columns[J].Journal of Building Structures,2007,28(3):53-61.(in Chinese)
[12]傅剑平,张川,陈滔,等.钢筋混凝土抗震框架节点受力机理及轴压比影响的试验研究[J].建筑结构学报,2006,27(3):67-76.FU Jianping,ZHANG Chuan,CHEN Tao,et al.Experimental investigation of shear mechanism and effect of axial-compression ratio on joints inearthquake-resistant reinforced concrete frames[J].Journal of Building Structures,2006,27(3):67-76.(in Chinese)
[13]Hiroshi Kuramoto,Isao Nishiyama.Seismic performance and stress transferring mechanism of through-column-type joints for composite reinforced[J].Journal of Structural Engineering,2004,130(2):352-360.
[14]JGJ138—2001型钢混凝土组合结构技术规程[S].北京:中国建筑工业出版社,2001.JGJ 138—2001 Technical Specification for Steel Reinforced Concrete Composite Structures[S].Beijing:China Architecture and Building Press,2001.(in Chinese)
[15]李红星.钢筋混凝土框架异型节点抗震性能试验研究[D].西安:西安建筑科技大学,2002.LI Hongxing.Aseismatic properties research on abnormal reinforced concrete frame joints[D].Xi'an:Xi'an University of Architecture and Technol-ogy,2002.(in Chinese)
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