高轴压比钢管混凝土剪力墙抗震性能试验研究
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摘要
为研究约束边缘构件内配置圆钢管的钢管混凝土剪力墙的抗震性能、探讨钢管混凝土剪力墙的轴压比限值及其约束边缘构件的配箍要求,完成了6个剪跨比大于2.0的高轴压比钢管混凝土剪力墙试件和1个钢筋混凝土剪力墙试件的拟静力试验。试验结果表明:剪力墙的破坏形态为压弯破坏及底部混凝土压溃而丧失竖向承载能力;钢管混凝土剪力墙的开裂水平力、名义屈服水平力、正截面受弯承载力和变形能力均比相同参数的钢筋混凝土剪力墙大;配置双钢管剪力墙的变形能力大于配置单钢管的剪力墙,约束边缘构件为端柱的剪力墙的变形能力大于约束边缘构件为暗柱的剪力墙;正截面受弯承载力试验值大于计算值。根据试验结果,提出了钢管混凝土剪力墙的设计建议。
To study seismic behavior of shear walls with circular steel tubes embedded in the confined boundary elements,and to investigate the limit value of axial compressive load ratio and the stirrup requirements in the confined boundary elements,quasi-static tests on six steel tube-reinforced concrete(ST-RC) composite shear wall specimens and one reinforced concrete(RC) shear wall specimen were conducted.All the specimens had an shear-span ratio greater than 2.0 and subjected to a high axial compressive load.The test results indicate that the failure mode of the specimens is the axial-flexural failure,with crushing of toe concrete and losing of vertical load bearing capacity.The crack load,nominal yield load,flexural strength and deformation capacity of the ST-RC composite shear wall specimens are larger than those of the RC shear wall specimen with the same parameters.The deformation capacity of the specimen with double steel tubes is greater than that of the specimens with a single steel tube in each boundary element.The ST-RC composite shear wall specimen with end columns has larger ultimate lateral displacement comparing with rectangle sectional specimens.The measured flexural strength is larger than the calculated value.On the basis of the experimental results,design recommendations are proposed for ST-RC composite shear walls.
To study seismic behavior of shear walls with circular steel tubes embedded in the confined boundary elements,and to investigate the limit value of axial compressive load ratio and the stirrup requirements in the confined boundary elements,quasi-static tests on six steel tube-reinforced concrete(ST-RC) composite shear wall specimens and one reinforced concrete(RC) shear wall specimen were conducted.All the specimens had an shear-span ratio greater than 2.0 and subjected to a high axial compressive load.The test results indicate that the failure mode of the specimens is the axial-flexural failure,with crushing of toe concrete and losing of vertical load bearing capacity.The crack load,nominal yield load,flexural strength and deformation capacity of the ST-RC composite shear wall specimens are larger than those of the RC shear wall specimen with the same parameters.The deformation capacity of the specimen with double steel tubes is greater than that of the specimens with a single steel tube in each boundary element.The ST-RC composite shear wall specimen with end columns has larger ultimate lateral displacement comparing with rectangle sectional specimens.The measured flexural strength is larger than the calculated value.On the basis of the experimental results,design recommendations are proposed for ST-RC composite shear walls.
引文
[1]GB50011—2001建筑抗震设计规范[S].(GB50011—2001Code for seismic design of buildings[S].(in Chinese))
[2]International Code Council.International building code 2006[S].
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[9]董宇光,吕西林.型钢混凝土剪力墙轴压比计算及其限值研究[J].地震工程与工程振动,2007,27(1):80-85.(Dong Yuguang,Lu Xilin.Study on axial compression ratio calculation and limit value for steel reinforced concrete walls[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(1):80-85.(in Chinese))
[10]吕西林,董宇光,丁子文.截面中部配置型钢的混凝土剪力墙抗震性能研究[J].地震工程与工程振动,2006,26(6):101-107.(Lu Xilin,Dong Yuguang,Ding Ziwen.Study on seismic behavior of steel reinforced concrete wall[J].Journal of Earthquake Engineering and Engineering Vibration,2006,26(6):101-107.(in Chinese))
[11]钱稼茹,魏勇,赵作周,等.高轴压比钢骨混凝土剪力墙抗震性能试验[J].建筑结构学报,2008,29(2):43-50.(QIAN Jiaru,WEI Yong,ZHAO Zuozhou,et al.Experimental study on seismic behavior of SRC shear walls with high axial force ratio[J].Journal of Building Structures,2008,29(2):43-50.(in Chinese))
[12]CECS188—2005钢管混凝土叠合柱结构技术规程[S].(CECS188—2005Technical specification for design and construction of concrete-filled steel tubular structures[S].(in Chinese))
[13]JGJ3—2002高层建筑混凝土结构技术规程[S].(JGJ3—2002Technical specification for concrete structures of tall building[S].(in Chinese))
[2]International Code Council.International building code 2006[S].
[3]钱稼茹,吕文,方鄂华.基于位移延性的剪力墙抗震设计[J].建筑结构学报,1999,20(3):42-49.(QIAN Jiaru,LWen,FANG Ehua.Displacement ductility-based seismic design for shear walls[J].Journal of Building Structures,1999,20(3):42-49.(in Chinese))
[4]钱稼茹,李耕勤.钢筋混凝土抗震墙墙肢约束边缘构件基于弹塑性层间位移角的设计[J].建筑结构,2002,32(8):3-6.(Qian Jiaru,Li Gengqin.Elastic-plastic drift-based design of confined boundary elements of shear wall piers[J].Building Structure,2002,32(8):3-6.(in Chinese))
[5]Zhao Q H,Abolhassan A A.Cyclic behavior of traditional and innovative composite shear wall[J].Journal of Structural Engineering,ASCE,2004,130(2):271-285.
[6]孙建超,徐培福,肖从真,孙慧中,王翠坤.钢板-混凝土组合剪力墙受剪性能试验研究[J].建筑结构,2008,38(6):1-5.(Sun Jianchao,Xu Peifu,Xiao Congzhen,Sun Huizhong,Wang Cuikun.Experimental study on shear behavior of steel plate-concrete composite wall[J].Building Structure,2008,38(6):1-5.(in Chinese))
[7]Eom T S,Park H G,Lee C H,Kim J H,Chang I H.Behavior of double skin composite wall subjected to in-plane cyclic loading[J].Journal of Structural Engineering,ASCE,2009,135(10):1239-1249.
[8]曹万林,张建伟,董宏英,郑同亮.内藏桁架混凝土组合高剪力墙抗震性能[J].哈尔滨工业大学学报,2009,41(4):153-158.(CAO Wanlin,ZHANG Jianwei,DONG Hongying,ZHENG Tongliang.Seismic performance of high-rise shear wall with concealed truss[J].Journal of Harbin Institute of Technology,2009,41(4):153-158.(in Chinese))
[9]董宇光,吕西林.型钢混凝土剪力墙轴压比计算及其限值研究[J].地震工程与工程振动,2007,27(1):80-85.(Dong Yuguang,Lu Xilin.Study on axial compression ratio calculation and limit value for steel reinforced concrete walls[J].Journal of Earthquake Engineering and Engineering Vibration,2007,27(1):80-85.(in Chinese))
[10]吕西林,董宇光,丁子文.截面中部配置型钢的混凝土剪力墙抗震性能研究[J].地震工程与工程振动,2006,26(6):101-107.(Lu Xilin,Dong Yuguang,Ding Ziwen.Study on seismic behavior of steel reinforced concrete wall[J].Journal of Earthquake Engineering and Engineering Vibration,2006,26(6):101-107.(in Chinese))
[11]钱稼茹,魏勇,赵作周,等.高轴压比钢骨混凝土剪力墙抗震性能试验[J].建筑结构学报,2008,29(2):43-50.(QIAN Jiaru,WEI Yong,ZHAO Zuozhou,et al.Experimental study on seismic behavior of SRC shear walls with high axial force ratio[J].Journal of Building Structures,2008,29(2):43-50.(in Chinese))
[12]CECS188—2005钢管混凝土叠合柱结构技术规程[S].(CECS188—2005Technical specification for design and construction of concrete-filled steel tubular structures[S].(in Chinese))
[13]JGJ3—2002高层建筑混凝土结构技术规程[S].(JGJ3—2002Technical specification for concrete structures of tall building[S].(in Chinese))
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