半通缝连梁抗震性能有限元分析
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摘要
连梁是连肢剪力墙结构中重要的耗能构件,当连梁的跨高比小于2时,连梁大多发生脆性剪切破坏.为了改善小跨高比连梁的变形和耗能性能,提出一种新型的连梁截面形式——半通缝连梁.借助有限元软件ABAQUS,对普通连梁、半通缝连梁及双连梁进行数值模拟.对比分析跨高比为0.75,1.0,1.25的3种类型的连梁在单调荷载作用下的承载能力和变形能力,并以跨高比为0.75的连梁为例研究3种类型的连梁在循环荷载作用下的刚度退化和耗能能力.结果表明:半通缝连梁表现出了良好的抗震性能,可以同时兼顾刚度和变形的要求.
The coupling beam is an important component of energy reduction in the shear walls structure.Studies have shown that when span-depth ratio is less than 2.0,coupling beam mostly occurs brittle shear failure.This paper presents a novel coupling beam in the name of semi seam coupling beam for improving the ductility and energy reduction.Then finite element model of coupling beams is established by ABAQUS to analyze their mechanical properties.Compared to the mechanical properties of ordinary coupling beam,semi seam coupling beam and dual coupling beam with span depth ratio of 0.75,1.0 and 1.25 under monotonic load,through modeling all three types of coupling beams and carrying on finite element analysis,stiffness degradation and energy dissipation capacity of coupling beam with span depth ratio of 0.75 are studied under cyclic loading.The results show that the semi seam coupling beam acts the superiority in seismic performance,and meets requirements of both rigidity and deformability.
The coupling beam is an important component of energy reduction in the shear walls structure.Studies have shown that when span-depth ratio is less than 2.0,coupling beam mostly occurs brittle shear failure.This paper presents a novel coupling beam in the name of semi seam coupling beam for improving the ductility and energy reduction.Then finite element model of coupling beams is established by ABAQUS to analyze their mechanical properties.Compared to the mechanical properties of ordinary coupling beam,semi seam coupling beam and dual coupling beam with span depth ratio of 0.75,1.0 and 1.25 under monotonic load,through modeling all three types of coupling beams and carrying on finite element analysis,stiffness degradation and energy dissipation capacity of coupling beam with span depth ratio of 0.75 are studied under cyclic loading.The results show that the semi seam coupling beam acts the superiority in seismic performance,and meets requirements of both rigidity and deformability.
引文
[1]Theodosios P Tassios,Marina Moretti,Antonios Bezas.On the behavior and ductility of reinforced concrete coupling beams of shear walls[J].ACI Structural Journa1,1996,93(6):711-720.
[2]Luciano Galano,Andrea Vignoli.Seismic behavior of short coupling beams with different reinforcement layouts[J].ACI Structural Journa1,2000,97(6):876-885.
[3]皮天祥,白绍良,傅剑平.跨高比L/h≤1.5复合配筋连梁受力状态的模拟[J].工程力学,2010,27(5):97-105.PI Tian-xiang,BAI Shao-liang,FU Jian-ping.Simulation for behavior of length to height ratio L/h≤1.5compositely reinforced coupling beams[J].Engineering Mechanics,2010,27(5):97-105.
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[5]张刚,赵作舟.钢板混凝土连梁抗震性能的试验研究[D].北京:清华大学,2005.ZHANG Gang,ZHAO Zuo-zhou.Experimental study on seismic behavior of steel plate reinforced concrete coupling beams[D].Beijing:Tsinghua University,2005.
[6]胥玉祥,朱玉华,赵昕,等.双连梁受力性能研究[J].结构工程师,2010,26(3):31-37.XU Yu-xiang,ZHU Yu-hua,ZHAO Xin,et al.Research on dual coupling beams based on mechanical performance[J].Structural Engineers,2010,26(3):31-37.
[7]Patrick J Fortney,Bahram M Shahrooz,Gian A Rassati.Large-scale testing of a replaceable"fuse"steel coupling beam[J].Journal of Structural Engineering,2007,133(12):1294-1302.
[8]吕西林,陈云,蒋欢军.新型可更换连梁研究进展[J].地震工程与工程振动,2013,33(1):8-15.LV Xi-lin,CHEN Yun,JIANG Huan-jun.Research progress in new replaceable coupling beams[J].Journal of Earthquake Engineering and Engineering Vibration,2013,33(1):8-15.
[9]龚炳年,方鄂华.复荷载下联肢剪力墙结构连系梁的性能[J].建筑结构学报,1988,1(4):34-41.GONG Bing-nian,FANG E-hua.The performance of the shear wall coupling beam under cyclic load[J].Journal of Building Structures,1988,1(4):34-41.
[10]聂建国,王宇航.ABAQUS中混凝土本构模型用于模拟结构静力行为的比较研究[J].工程力学,2013,30(4):59-67.NIE Jian-guo,WANG Yu-hang.Comparison study of constitutive model of concrete in ABAQUS for static analysis of structures[J].Engineering Mechanics,2013,30(4):59-67.
[11]Birrtel V,Mark P.Parameterized finite element modeling of RC beam shear failure[C]//2006ABAQUS Users’Conference.Taibei,2006:95-108.
[12]王金昌,陈页开.ABAQUS在土木工程中的应用[M].杭州:浙江大学出版社,2006.WANG Jin-chang,CHEN Ye-kai.ABAQUS application in the civil engineering[M].Hangzhou:Zhejiang University Press,2006.
[13]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.GUO Zhen-hai,SHI Xu-dong.Reinforced concrete theory and analyses[M].Beijing:Tsinghua University Press,2003.
[2]Luciano Galano,Andrea Vignoli.Seismic behavior of short coupling beams with different reinforcement layouts[J].ACI Structural Journa1,2000,97(6):876-885.
[3]皮天祥,白绍良,傅剑平.跨高比L/h≤1.5复合配筋连梁受力状态的模拟[J].工程力学,2010,27(5):97-105.PI Tian-xiang,BAI Shao-liang,FU Jian-ping.Simulation for behavior of length to height ratio L/h≤1.5compositely reinforced coupling beams[J].Engineering Mechanics,2010,27(5):97-105.
[4]梁兴文,刘清山.抗震剪力墙小跨高比连梁的理论分析和试验研究[D].西安:西安建筑科技大学,2006.LIANG Xing-wen,LIU Qing-shan.Theoretical analysis and experimental study on coupling beam with small span-to-depth ratio in seismic coupled shear walls structure[D].Xi’an:Xi’an University of Architecture and Technology,2006.
[5]张刚,赵作舟.钢板混凝土连梁抗震性能的试验研究[D].北京:清华大学,2005.ZHANG Gang,ZHAO Zuo-zhou.Experimental study on seismic behavior of steel plate reinforced concrete coupling beams[D].Beijing:Tsinghua University,2005.
[6]胥玉祥,朱玉华,赵昕,等.双连梁受力性能研究[J].结构工程师,2010,26(3):31-37.XU Yu-xiang,ZHU Yu-hua,ZHAO Xin,et al.Research on dual coupling beams based on mechanical performance[J].Structural Engineers,2010,26(3):31-37.
[7]Patrick J Fortney,Bahram M Shahrooz,Gian A Rassati.Large-scale testing of a replaceable"fuse"steel coupling beam[J].Journal of Structural Engineering,2007,133(12):1294-1302.
[8]吕西林,陈云,蒋欢军.新型可更换连梁研究进展[J].地震工程与工程振动,2013,33(1):8-15.LV Xi-lin,CHEN Yun,JIANG Huan-jun.Research progress in new replaceable coupling beams[J].Journal of Earthquake Engineering and Engineering Vibration,2013,33(1):8-15.
[9]龚炳年,方鄂华.复荷载下联肢剪力墙结构连系梁的性能[J].建筑结构学报,1988,1(4):34-41.GONG Bing-nian,FANG E-hua.The performance of the shear wall coupling beam under cyclic load[J].Journal of Building Structures,1988,1(4):34-41.
[10]聂建国,王宇航.ABAQUS中混凝土本构模型用于模拟结构静力行为的比较研究[J].工程力学,2013,30(4):59-67.NIE Jian-guo,WANG Yu-hang.Comparison study of constitutive model of concrete in ABAQUS for static analysis of structures[J].Engineering Mechanics,2013,30(4):59-67.
[11]Birrtel V,Mark P.Parameterized finite element modeling of RC beam shear failure[C]//2006ABAQUS Users’Conference.Taibei,2006:95-108.
[12]王金昌,陈页开.ABAQUS在土木工程中的应用[M].杭州:浙江大学出版社,2006.WANG Jin-chang,CHEN Ye-kai.ABAQUS application in the civil engineering[M].Hangzhou:Zhejiang University Press,2006.
[13]过镇海,时旭东.钢筋混凝土原理和分析[M].北京:清华大学出版社,2003.GUO Zhen-hai,SHI Xu-dong.Reinforced concrete theory and analyses[M].Beijing:Tsinghua University Press,2003.
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