高配筋率边缘约束构件高强混凝土剪力墙抗震性能试验研究
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摘要
混凝土剪力墙是当今高层结构中的主要抗侧力构件,而在高层尤其是超高层结构中应用高强混凝土剪力墙,不仅能够有效的减轻建筑物自重,减小整体结构的地震反应,更能够降低建筑物造价,增加可观的使用空间,经济和社会效益显著。但高强混凝土剪力墙的抗震性能有待进一步进行研究。为了改善高强混凝土剪力墙的延性,设计了7个不同形式的高配筋率边缘约束构件高强混凝土剪力墙试件和1个普通配筋率的高强混凝土剪力墙试件,并在拟静力试验基础上,利用ABAQUS有限元软件对高强混凝土剪力墙进行非线性分析,主要包括以下几个方面的工作:
(1)通过8个高强混凝土剪力墙试件在低周反复水平荷载作用下的试验,研究了高强混凝土剪力墙的抗震性能,分析了轴压比、剪跨比和约束边缘构件纵向钢筋配筋率等因素对高强混凝土剪力墙变形性能的影响。剪力墙试件的约束边缘构件(即暗柱或端柱)的纵筋配筋率设置为5%~8%左右,意在对暗柱或端柱范围混凝土进行有效约束,从而提高混凝土剪力墙的延性。
(2)试验完成后,对剪力墙试件的破坏形态、滞回特性、变形能力、刚度退化特性、耗能能力、截面应变等进行了分析。试验研究结果表明,对于剪跨比λ≥2的剪力墙,在高强混凝土剪力墙中设置高配筋率暗柱或端柱,并适当提高水平和竖向分布钢筋的配筋率,可以显著提高高强混凝土剪力墙的抗震性能。
(3)在高配筋率边缘约束构件高强混凝土剪力墙试验研究基础上,利用非线性有限元分析软件ABAQUS,建立了剪力墙的力学模型,对试件进行了单调位移加载的数值模拟仿真分析,理论结果与试验结果进行了对比分析、相互验证。结果表明,理论曲线与试验曲线能够较好的吻合。
本文的研究成果为高强混凝土剪力墙的抗震设计提供了试验依据,对实际工程的设计和应用具有重要的意义。
As a main lateral load resisting structural member, concrete shear wall is playing a important role in the high-building. Especially in the super high rise building, the using of the high performance concrete shear wall(HPCSW), which can efficiently reduce the weight, the earthquake action and the cost of the buildings, will bring enormous economic and social benefits. But the seismic performance of the HPCSW need further study. According to improve the ductility of the shear wall, seven different form specimens of the HPCSW with high reinforcement ratio boundary elements and one specimen of the HPCSW with common reinforcement ratio boundary element are designed to be tested under low cyclic reversed lateral loading. Then based on the experimental results, the nonlinear analysis is carried out using the ABAQUS finite element analysis(FEA) program. The main achievements of the dissertation are listed as following:
(1) Through the tests of eight HPCSW specimens, the seismic performance is investigated. The influence of the axial load ratio、the shear span ratio、the longitudinal reinforcement ratio of the boundary element etc on the load-deformation response of the HPCSW has been explored deeply. The longitudinal reinforcement ratio of the boundary element (hidden column or boundary column) is set to between 5%~8%, intended to increase the ductility through effectively confining the core concrete.
(2) Seismic behavior such as failure pattern, hysteretic characteristics, displacement ductility, rigidity degeneration and energy dissipation etc were investigated after the tests. The results show that when the shear span ratio ? ? 2, the seismic behavior of the HPCSW are significantly improved with higher horizontal and longitudinal reinforcement ratio.
(3) Based on the experimental results, the nonlinear FEA software ABAQUS is used to set up the mechanical model of the shear wall specimens and the monotonic loading process is simulated. Theoretical results and the experimental results are contrasted mutually. The results show that theoretical curve and the experimental curve are in good agreement.
In this paper, research results will supply experimental data and theoretical basis for seismic-bearing capacity calculation and design method of the high performance concrete shear wall. The research is of great significance for engineering design and practice.
(1)通过8个高强混凝土剪力墙试件在低周反复水平荷载作用下的试验,研究了高强混凝土剪力墙的抗震性能,分析了轴压比、剪跨比和约束边缘构件纵向钢筋配筋率等因素对高强混凝土剪力墙变形性能的影响。剪力墙试件的约束边缘构件(即暗柱或端柱)的纵筋配筋率设置为5%~8%左右,意在对暗柱或端柱范围混凝土进行有效约束,从而提高混凝土剪力墙的延性。
(2)试验完成后,对剪力墙试件的破坏形态、滞回特性、变形能力、刚度退化特性、耗能能力、截面应变等进行了分析。试验研究结果表明,对于剪跨比λ≥2的剪力墙,在高强混凝土剪力墙中设置高配筋率暗柱或端柱,并适当提高水平和竖向分布钢筋的配筋率,可以显著提高高强混凝土剪力墙的抗震性能。
(3)在高配筋率边缘约束构件高强混凝土剪力墙试验研究基础上,利用非线性有限元分析软件ABAQUS,建立了剪力墙的力学模型,对试件进行了单调位移加载的数值模拟仿真分析,理论结果与试验结果进行了对比分析、相互验证。结果表明,理论曲线与试验曲线能够较好的吻合。
本文的研究成果为高强混凝土剪力墙的抗震设计提供了试验依据,对实际工程的设计和应用具有重要的意义。
As a main lateral load resisting structural member, concrete shear wall is playing a important role in the high-building. Especially in the super high rise building, the using of the high performance concrete shear wall(HPCSW), which can efficiently reduce the weight, the earthquake action and the cost of the buildings, will bring enormous economic and social benefits. But the seismic performance of the HPCSW need further study. According to improve the ductility of the shear wall, seven different form specimens of the HPCSW with high reinforcement ratio boundary elements and one specimen of the HPCSW with common reinforcement ratio boundary element are designed to be tested under low cyclic reversed lateral loading. Then based on the experimental results, the nonlinear analysis is carried out using the ABAQUS finite element analysis(FEA) program. The main achievements of the dissertation are listed as following:
(1) Through the tests of eight HPCSW specimens, the seismic performance is investigated. The influence of the axial load ratio、the shear span ratio、the longitudinal reinforcement ratio of the boundary element etc on the load-deformation response of the HPCSW has been explored deeply. The longitudinal reinforcement ratio of the boundary element (hidden column or boundary column) is set to between 5%~8%, intended to increase the ductility through effectively confining the core concrete.
(2) Seismic behavior such as failure pattern, hysteretic characteristics, displacement ductility, rigidity degeneration and energy dissipation etc were investigated after the tests. The results show that when the shear span ratio ? ? 2, the seismic behavior of the HPCSW are significantly improved with higher horizontal and longitudinal reinforcement ratio.
(3) Based on the experimental results, the nonlinear FEA software ABAQUS is used to set up the mechanical model of the shear wall specimens and the monotonic loading process is simulated. Theoretical results and the experimental results are contrasted mutually. The results show that theoretical curve and the experimental curve are in good agreement.
In this paper, research results will supply experimental data and theoretical basis for seismic-bearing capacity calculation and design method of the high performance concrete shear wall. The research is of great significance for engineering design and practice.
引文
[1]物理力学专题小组.高强混凝土的物理力学性能.钢筋混凝土研究报告论文集,1991
[2]冯乃谦,孙逸增等.高强混凝土[M].沈阳:国家标准“暖卫施工规范管理组”内部出版,1993,7
[3]混凝土结构设计规范(GB 50010-2002)[S].北京:中国建筑工业出版社,2002
[4] Oh Y H,Han S W,Lee L H. Effect of boundary element details on the seismic Deformation capacity of structural walls. Earthquake Engineering and Structural Dynamics,2002,31(8):1583-1602
[5]吕文,钱稼茹,方鄂华.钢筋混凝土剪力墙延性的试验和计算[J].清华大学学报(自然科学版),1999,39(4):88-91
[6]陈勤,钱稼茹,李耕勤.剪力墙受力性能的宏观型静力弹塑性分析[J].土木工程学报,2004,37(3):35-43
[7]魏勇,钱稼茹等.高轴压比钢骨混凝土矮墙水平加载试验[J].工业建筑,2007,37(6):76-79
[8]吕西林,董宇光.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
[9]董宇光,吕西林,丁子文.型钢混凝土剪力墙抗剪承载力计算公式研究[J].工程力学,2007,06:114-118
[10]李宏男,李兵.钢筋混凝土剪力墙抗震恢复力模型及试验研究[J].建筑结构学报,2004,25(5):35-42
[11]白亮.型钢高性能混凝土剪力墙抗震性能及性能设计理论研究[D].西安:西安建筑科技大学博士学位论文,2009
[12]李根.边缘构件内型钢含钢率对高强混凝土中高剪力墙抗震性能影响试验研究[D].重庆:重庆大学硕士论文,2010
[13]邓明科.高性能混凝土剪力墙基于性能的抗震设计理论与试验研究[D].西安:西安建筑科技大学博士学位论文,2006
[14]梁兴文,杨鹏辉.带端柱高强混凝土剪力墙抗震性能试验研究[J].建筑结构学报,2010,31(1):23-32
[15]张展,周克荣等.变高宽比高性能混凝土剪力墙抗震性能的试验研究[J].结构工程,2004(2):62-68
[16]张曰果,张隆飞等.高强钢筋高强混凝土剪力墙抗震性能试验研究[J].沈阳建筑大学学报,2010,20(1):119-123
[17]左晓宝,戴自强,李砚波.改善高强混凝土剪力墙抗震性能的试验研究[J].工业建筑,2001,31(6):37-39
[18]建筑抗震试验方法规程(JGJ 101-96)[S].北京:中国建筑工业出版社,1996
[19]高层建筑混凝土结构技术规程(JGJ3-2002)[S].北京:中国建筑工业出版社,2002
[20]建筑抗震设计规范(GB 50011-2001)[S].北京:中国建筑工业出版社,2001
[21]庄茁,由小川等.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009
[22]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
[23]张劲,王庆扬等. ABAQUS混凝土损伤塑性模型参数验证[J].建筑结构,2008,38(8):127-130
[24]王铁成.混凝土结构设计原理[M].北京:中国建筑工业出版社,2006
[25]包世华,张铜生.高层建筑结构设计和计算[M].北京:清华大学出版社,2005
[26]曹金凤,石亦平. ABAQUS有限元分析常见问题解答[M].北京:机械工业出版社,2009
[27] W.F.Chen,D.J.Han. Plasticity for Structural Engineers [M]. Springer-Verlag
[28]陈惠发,A.F.萨里普.弹性与塑性力学[M].北京:中国建筑工业出版社,2004
[29]罗伯特D库克,戴维S马尔库斯.有限元分析的概念与应用[M].西安:西安交通大学出版社,2007
[30]田士峰.高强混凝土剪力墙抗震试验及非线性分析[D].西安:西安建筑科技大学硕士学位论文,2006
[31]杨鹏辉.带端柱高性能混凝土剪力墙抗震试验与分析[D].西安:西安建筑科技大学硕士学位论文,2009
[32]马恺泽,梁兴文等.基于变形的型钢高性能混凝土剪力墙非线性有限元分析[J].建筑结构,2010,40(7):103-111
[33]李莉,薛素铎,曹万林.高强高性能混凝土剪力墙的研究现状及展望[J].世界地震工程,2008,24(2):90-96
[34] Priestley M J N,Kowalsky M J. Direct displacement-based seismic design of concretebuildings[J]. Bulletin of New Zealand Society for Earthquake Engineering,2000,33(4):90-96
[35]曹万林,王敏.矩形钢管混凝土边框组合剪力墙及筒体结构抗震研究[J].工程力学,2008,25(增刊Ⅰ):360-364
[36]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
[37]李兵,李宏男.钢筋混凝土剪力墙弹塑性分析方法[J].地震工程与工程振动,2004,24(8):76-81
[38]陈勤,李耕勤,钱稼茹,顾万黎. HRB400级钢筋焊接网剪力墙试验研究[J].混凝土,2002 (7):18-22
[39]梁兴文,邓明科,张兴虎,田士峰.高性能混凝土剪力墙性能设计理论的试验研究[J].建筑结构学报,2007,28(5):80-88
[40]邓明科,梁兴文,刘清山.横向约束钢筋新配筋方案高性能混凝土剪力墙抗震性能的试验研究[J].西安建筑科技大学学报(自然科学版),2006,38(4):538-543
[41]阎石,张隆飞,张曰果.高强混凝土剪力墙非线性有限元分析[J].地震工程与工程振动,2009,29(5):94-101
[42]黄斯林,梁兴文,杨克家.高强混凝土剪力墙非线性有限元分析[J].工业建筑,2007,37(3):38-71
[2]冯乃谦,孙逸增等.高强混凝土[M].沈阳:国家标准“暖卫施工规范管理组”内部出版,1993,7
[3]混凝土结构设计规范(GB 50010-2002)[S].北京:中国建筑工业出版社,2002
[4] Oh Y H,Han S W,Lee L H. Effect of boundary element details on the seismic Deformation capacity of structural walls. Earthquake Engineering and Structural Dynamics,2002,31(8):1583-1602
[5]吕文,钱稼茹,方鄂华.钢筋混凝土剪力墙延性的试验和计算[J].清华大学学报(自然科学版),1999,39(4):88-91
[6]陈勤,钱稼茹,李耕勤.剪力墙受力性能的宏观型静力弹塑性分析[J].土木工程学报,2004,37(3):35-43
[7]魏勇,钱稼茹等.高轴压比钢骨混凝土矮墙水平加载试验[J].工业建筑,2007,37(6):76-79
[8]吕西林,董宇光.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
[9]董宇光,吕西林,丁子文.型钢混凝土剪力墙抗剪承载力计算公式研究[J].工程力学,2007,06:114-118
[10]李宏男,李兵.钢筋混凝土剪力墙抗震恢复力模型及试验研究[J].建筑结构学报,2004,25(5):35-42
[11]白亮.型钢高性能混凝土剪力墙抗震性能及性能设计理论研究[D].西安:西安建筑科技大学博士学位论文,2009
[12]李根.边缘构件内型钢含钢率对高强混凝土中高剪力墙抗震性能影响试验研究[D].重庆:重庆大学硕士论文,2010
[13]邓明科.高性能混凝土剪力墙基于性能的抗震设计理论与试验研究[D].西安:西安建筑科技大学博士学位论文,2006
[14]梁兴文,杨鹏辉.带端柱高强混凝土剪力墙抗震性能试验研究[J].建筑结构学报,2010,31(1):23-32
[15]张展,周克荣等.变高宽比高性能混凝土剪力墙抗震性能的试验研究[J].结构工程,2004(2):62-68
[16]张曰果,张隆飞等.高强钢筋高强混凝土剪力墙抗震性能试验研究[J].沈阳建筑大学学报,2010,20(1):119-123
[17]左晓宝,戴自强,李砚波.改善高强混凝土剪力墙抗震性能的试验研究[J].工业建筑,2001,31(6):37-39
[18]建筑抗震试验方法规程(JGJ 101-96)[S].北京:中国建筑工业出版社,1996
[19]高层建筑混凝土结构技术规程(JGJ3-2002)[S].北京:中国建筑工业出版社,2002
[20]建筑抗震设计规范(GB 50011-2001)[S].北京:中国建筑工业出版社,2001
[21]庄茁,由小川等.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009
[22]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
[23]张劲,王庆扬等. ABAQUS混凝土损伤塑性模型参数验证[J].建筑结构,2008,38(8):127-130
[24]王铁成.混凝土结构设计原理[M].北京:中国建筑工业出版社,2006
[25]包世华,张铜生.高层建筑结构设计和计算[M].北京:清华大学出版社,2005
[26]曹金凤,石亦平. ABAQUS有限元分析常见问题解答[M].北京:机械工业出版社,2009
[27] W.F.Chen,D.J.Han. Plasticity for Structural Engineers [M]. Springer-Verlag
[28]陈惠发,A.F.萨里普.弹性与塑性力学[M].北京:中国建筑工业出版社,2004
[29]罗伯特D库克,戴维S马尔库斯.有限元分析的概念与应用[M].西安:西安交通大学出版社,2007
[30]田士峰.高强混凝土剪力墙抗震试验及非线性分析[D].西安:西安建筑科技大学硕士学位论文,2006
[31]杨鹏辉.带端柱高性能混凝土剪力墙抗震试验与分析[D].西安:西安建筑科技大学硕士学位论文,2009
[32]马恺泽,梁兴文等.基于变形的型钢高性能混凝土剪力墙非线性有限元分析[J].建筑结构,2010,40(7):103-111
[33]李莉,薛素铎,曹万林.高强高性能混凝土剪力墙的研究现状及展望[J].世界地震工程,2008,24(2):90-96
[34] Priestley M J N,Kowalsky M J. Direct displacement-based seismic design of concretebuildings[J]. Bulletin of New Zealand Society for Earthquake Engineering,2000,33(4):90-96
[35]曹万林,王敏.矩形钢管混凝土边框组合剪力墙及筒体结构抗震研究[J].工程力学,2008,25(增刊Ⅰ):360-364
[36]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
[37]李兵,李宏男.钢筋混凝土剪力墙弹塑性分析方法[J].地震工程与工程振动,2004,24(8):76-81
[38]陈勤,李耕勤,钱稼茹,顾万黎. HRB400级钢筋焊接网剪力墙试验研究[J].混凝土,2002 (7):18-22
[39]梁兴文,邓明科,张兴虎,田士峰.高性能混凝土剪力墙性能设计理论的试验研究[J].建筑结构学报,2007,28(5):80-88
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