钢筋混凝土剪力墙塑性铰长度
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摘要
在基于性能的结构抗震设计框架内,塑性铰长度的大小能反映相应的剪力墙延性和耗能能力的强弱,同时也是衡量结构抗震性能的重要指标。本文采用MSC.Marc建立了钢筋混凝土剪力墙的精细有限元分析模型,并采用试验数据对分析模型进行验证,有限元计算结果与试验结果吻合较好,说明了本文剪力墙有限元模型的合理性。在此基础上,研究了剪力墙截面高度、剪力墙高度、轴压比、中间墙体横向分布钢筋的配筋率、混凝土强度、纵向钢筋强度、边缘约束构件纵向钢筋配筋率等参数对塑性铰长度影响。分析结果表明,剪力墙塑性铰长度随着剪力墙截面高度、剪力墙高度、边缘约束构件纵向钢筋配筋率的增大而增大,随着轴压比、水平分布钢筋配筋率、混凝土强度、纵向钢筋强度的增大而减小。其中剪力墙截面高度、剪力墙高度和轴压比是主要的影响因素。基于参数分析结果提出了一个计算剪力墙塑性铰长度的简化公式,简化公式计算结果与试验结果吻合良好,表明简化计算公式合理可靠,可供工程设计参考。
In performance-based seismic design of structure,plastic hinge length can reflect behavior of ductility and energy dissipation of reinforced concrete shear wall,and is an important indicator to measure the seismic behavior of structure. Reinforced concrete shear walls were set up by MSC. Marc and validated by comparing with lots of test data. The results of finite element analysis are in good agreement with that of experiments. It show the model of reinforced concrete shear wall in this paper is reasonable. Parametric study was conducted on reinforced concrete shear wall to study plastic hinge length influenced by the depth of section,the height of shear wall,the axial load ratio,the volumetric ratio of the web horizontal reinforcement,the concrete strength,the yield tensile strength of longitudinal bars in wall boundaries,the longitudinal reinforcement content in wall boundaries. The results show that plastic hinge length increases with the depth of section,the height of shear wall and the longitudinal reinforcement content in wall boundaries,and decreases with the axial load ratio,the volumetric ratio of the web horizontal reinforcement,the concrete strength and the yield tensile strength of longitudinal bars in wall boundaries. And the depth of section,the height of shear wall and the axial load ratio are the main factors of plastic hinge length. A simplified formula to evaluate the plastic hinge length of reinforced concrete shear wall was proposed on the basis of parametric study. The results obtained from the simplified formula are in good agreement with that from experiments. It proves that the simplified formula is reasonable and reliable and can be used for reference.
In performance-based seismic design of structure,plastic hinge length can reflect behavior of ductility and energy dissipation of reinforced concrete shear wall,and is an important indicator to measure the seismic behavior of structure. Reinforced concrete shear walls were set up by MSC. Marc and validated by comparing with lots of test data. The results of finite element analysis are in good agreement with that of experiments. It show the model of reinforced concrete shear wall in this paper is reasonable. Parametric study was conducted on reinforced concrete shear wall to study plastic hinge length influenced by the depth of section,the height of shear wall,the axial load ratio,the volumetric ratio of the web horizontal reinforcement,the concrete strength,the yield tensile strength of longitudinal bars in wall boundaries,the longitudinal reinforcement content in wall boundaries. The results show that plastic hinge length increases with the depth of section,the height of shear wall and the longitudinal reinforcement content in wall boundaries,and decreases with the axial load ratio,the volumetric ratio of the web horizontal reinforcement,the concrete strength and the yield tensile strength of longitudinal bars in wall boundaries. And the depth of section,the height of shear wall and the axial load ratio are the main factors of plastic hinge length. A simplified formula to evaluate the plastic hinge length of reinforced concrete shear wall was proposed on the basis of parametric study. The results obtained from the simplified formula are in good agreement with that from experiments. It proves that the simplified formula is reasonable and reliable and can be used for reference.
引文
[1] Priestley M J N. Displacement-based seismic design of structures[M]. IUSS Press,2008.
[2] Bohl A,Adebar P. Plastic hinge lengths in high-rise concrete shear walls[J]. Aci Structural Journal,2011,108(2):148-157.
[3] Massone L M,Alfaro J I. Displacement and curvature estimation for the design of reinforced concrete slender walls[J]. Structural Design of Tall&Special Buildings,2016,25(16):823-841.
[4] Wu Y,Zhang J,Yang Y B,et al. Seismic performance of reinforced concrete squat walls with embedded cold-formed and thin walled steel truss[J]. Engineering Structures,2017,132:714-732.
[5]王义俊,汪梦甫.钢筋混凝土剪力墙塑性铰长度计算模型研究[J].工业建筑,2016,46(5):80-85.WANG Yijun,WANG Mengfu,Study on calculation model of plastic hinge length of reinforced concrete shear walls[J]. Industrial Construction,2016,46(5):80-85.(in Chinese)
[6]张健新,戎贤,刘平.配置600MPa钢筋高韧性混凝土框架中节点变形性能[J].地震工程与工程振动,2017,37(2):165-172.ZHANG Jianxin,RONG Xian,LIU Ping. Deformation behavior of interior joints with 600 MPa reinforcement steel bar and high toughness concrete[J]. Earthquake Engineering and Engineering Dynamics,2017,37(2):165-172.(in Chinese)
[7]黄远,黄登,陈桂榕,等.钢管混凝土叠合柱抗震性能界限状态研究[J].地震工程与工程振动,2018,38(2):157-167.HUANG Yuan,HUANG Deng,CHEN Guirong,Seismic performance limit states of steel tube-reinforced concrete columns[J]. Earthquake Engineering and Engineering Dynamics,2018,38(2):157-167.(in Chinese)
[8]过镇海.钢筋混凝土原理.第3版[M].北京:清华大学出版社,2013.GUO Zhenhai. The principle of reinforced concrete(third edition)[M]. Beijing:Tsinghua University Press,2013.(in Chinese)
[9]钱稼茹,程丽荣,周栋梁.普通箍筋约束混凝土柱的中心受压性能[J].清华大学学报:自然科学版,2002,42(10):1369-1373.QIAN Jiaru,CHENG Lirong,ZHOU Dongliang. Behavior of axially loaded concrete columns confined with ordinary hoops[J]. Journal of Tsinghua University:Science and Technology,2002,42(10):1369-1373.(in Chinese)
[10]方小丹,李照林,韦宏,等.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[J].建筑结构学报,2011,32(12):145-153.FANG Xiaodan,LI Zhaolin,WEI Hong,et al. Experimental Study on seismic behavior of high performance concrete shear wall with high reinforcement ratio boundary elements.[J]. Journal of Building Structures,2011,32(12):145-153.(in Chinese)
[11]李健.基于材料应变的钢筋混凝土剪力墙变形性能指标研究[D].广州:华南理工大学,2012.LI Jian. Research on deformation limits of RC shear wall based on material strain[D]. Guangzhou:South China University of Technology.(in Chinese)
[12] Zhang Y,Wang Z. Seismic behavior of reinforced concrete shear walls subjected to high axial loading[J]. Aci Structural Journal,2000,97(5):739-750.
[13] Peng Y Y,Qian J R,Wang Y H. Cyclic performance of precast concrete shear walls with a mortar-sleeve connection for longitudinal steel bars[J]. Materials&Structures,2016,49(6):2455-2469.
[14] Mun J H,Yang K H. Plastic hinge length of reinforced concrete slender shear walls[J]. Magazine of Concrete Research,2015,67(8):414-429.
[15]?lker Kazaz. Analytical study on plastic hinge length of structural walls[J]. Journal of Structural Engineering,2013,139(11):1938-1950.
[16]陈勤,李耕勤,钱稼茹.剪力墙受力性能的宏模型静力弹塑性分析.土木工程学报,2004,37(3):35-43.CHEN Qin,LI Gengqin,QIAN Jiaru. Static elastic-plastic analysis of shear walla with macro-model[J]. China Civil Engineering Journal,2004,37(3):35-43.(in Chinese)
[17]张松,吕西林,章红梅.钢筋混凝土剪力墙构件极限位移的计算方法及试验研究[J].土木工程学报,2009(4):10-16.ZHANG Song,LV Xilin,ZHANG Hongmei. Experimental an analytical studies on the ultimate displacemene of RC shear walls[J]. China Civil Engineering Journal,2009(4):10-16.
[18]孙仲翰.配有高延性冷轧带肋钢筋焊接网一字型截面剪力墙抗震性能研究[D].重庆:重庆大学,2012.(in Chinese)SUN Zhonghan. Study on seismic behavior of straight shear walls with ductile cold-rolled ribbed welded steel fabric[D]. Chongqing:Chongqing University,2012.(in Chinese)
[19]章红梅.剪力墙结构基于性态的抗震设计方法研究[D].上海:同济大学,2007.ZHANG Hongmei. Study on the performance-based seismic design method for shear wall structures[D]. Shanghai:Tongji University,2007.(in Chinese)
[20]许铭,黄远,张锐.水平拼缝预制钢筋混凝土剪力墙抗震性能分析[J].地震工程与工程振动,2014,34(3):95-104.XU Ming,HUANG Yuan,ZHANG Rui. Seismic analysis of precast shear wall with horizontal seam[J]. Earthquake Engineering and Engineering Dynamics. 2014,34(3):95-104.(in Chinese)
[21]赵作周,梁志远,钱稼茹.高轴压比SRC剪力墙抗震性能分析[J].建筑结构,2009(1):41-44.ZHAO Zuozhou,LIANG Zhiyuan,QIAN Jiaru. Study on seismic behavior of SRC shear walls under hign axial compression ratio[J]. Building Structure,2009(1):41-44.(in Chinese)
[2] Bohl A,Adebar P. Plastic hinge lengths in high-rise concrete shear walls[J]. Aci Structural Journal,2011,108(2):148-157.
[3] Massone L M,Alfaro J I. Displacement and curvature estimation for the design of reinforced concrete slender walls[J]. Structural Design of Tall&Special Buildings,2016,25(16):823-841.
[4] Wu Y,Zhang J,Yang Y B,et al. Seismic performance of reinforced concrete squat walls with embedded cold-formed and thin walled steel truss[J]. Engineering Structures,2017,132:714-732.
[5]王义俊,汪梦甫.钢筋混凝土剪力墙塑性铰长度计算模型研究[J].工业建筑,2016,46(5):80-85.WANG Yijun,WANG Mengfu,Study on calculation model of plastic hinge length of reinforced concrete shear walls[J]. Industrial Construction,2016,46(5):80-85.(in Chinese)
[6]张健新,戎贤,刘平.配置600MPa钢筋高韧性混凝土框架中节点变形性能[J].地震工程与工程振动,2017,37(2):165-172.ZHANG Jianxin,RONG Xian,LIU Ping. Deformation behavior of interior joints with 600 MPa reinforcement steel bar and high toughness concrete[J]. Earthquake Engineering and Engineering Dynamics,2017,37(2):165-172.(in Chinese)
[7]黄远,黄登,陈桂榕,等.钢管混凝土叠合柱抗震性能界限状态研究[J].地震工程与工程振动,2018,38(2):157-167.HUANG Yuan,HUANG Deng,CHEN Guirong,Seismic performance limit states of steel tube-reinforced concrete columns[J]. Earthquake Engineering and Engineering Dynamics,2018,38(2):157-167.(in Chinese)
[8]过镇海.钢筋混凝土原理.第3版[M].北京:清华大学出版社,2013.GUO Zhenhai. The principle of reinforced concrete(third edition)[M]. Beijing:Tsinghua University Press,2013.(in Chinese)
[9]钱稼茹,程丽荣,周栋梁.普通箍筋约束混凝土柱的中心受压性能[J].清华大学学报:自然科学版,2002,42(10):1369-1373.QIAN Jiaru,CHENG Lirong,ZHOU Dongliang. Behavior of axially loaded concrete columns confined with ordinary hoops[J]. Journal of Tsinghua University:Science and Technology,2002,42(10):1369-1373.(in Chinese)
[10]方小丹,李照林,韦宏,等.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[J].建筑结构学报,2011,32(12):145-153.FANG Xiaodan,LI Zhaolin,WEI Hong,et al. Experimental Study on seismic behavior of high performance concrete shear wall with high reinforcement ratio boundary elements.[J]. Journal of Building Structures,2011,32(12):145-153.(in Chinese)
[11]李健.基于材料应变的钢筋混凝土剪力墙变形性能指标研究[D].广州:华南理工大学,2012.LI Jian. Research on deformation limits of RC shear wall based on material strain[D]. Guangzhou:South China University of Technology.(in Chinese)
[12] Zhang Y,Wang Z. Seismic behavior of reinforced concrete shear walls subjected to high axial loading[J]. Aci Structural Journal,2000,97(5):739-750.
[13] Peng Y Y,Qian J R,Wang Y H. Cyclic performance of precast concrete shear walls with a mortar-sleeve connection for longitudinal steel bars[J]. Materials&Structures,2016,49(6):2455-2469.
[14] Mun J H,Yang K H. Plastic hinge length of reinforced concrete slender shear walls[J]. Magazine of Concrete Research,2015,67(8):414-429.
[15]?lker Kazaz. Analytical study on plastic hinge length of structural walls[J]. Journal of Structural Engineering,2013,139(11):1938-1950.
[16]陈勤,李耕勤,钱稼茹.剪力墙受力性能的宏模型静力弹塑性分析.土木工程学报,2004,37(3):35-43.CHEN Qin,LI Gengqin,QIAN Jiaru. Static elastic-plastic analysis of shear walla with macro-model[J]. China Civil Engineering Journal,2004,37(3):35-43.(in Chinese)
[17]张松,吕西林,章红梅.钢筋混凝土剪力墙构件极限位移的计算方法及试验研究[J].土木工程学报,2009(4):10-16.ZHANG Song,LV Xilin,ZHANG Hongmei. Experimental an analytical studies on the ultimate displacemene of RC shear walls[J]. China Civil Engineering Journal,2009(4):10-16.
[18]孙仲翰.配有高延性冷轧带肋钢筋焊接网一字型截面剪力墙抗震性能研究[D].重庆:重庆大学,2012.(in Chinese)SUN Zhonghan. Study on seismic behavior of straight shear walls with ductile cold-rolled ribbed welded steel fabric[D]. Chongqing:Chongqing University,2012.(in Chinese)
[19]章红梅.剪力墙结构基于性态的抗震设计方法研究[D].上海:同济大学,2007.ZHANG Hongmei. Study on the performance-based seismic design method for shear wall structures[D]. Shanghai:Tongji University,2007.(in Chinese)
[20]许铭,黄远,张锐.水平拼缝预制钢筋混凝土剪力墙抗震性能分析[J].地震工程与工程振动,2014,34(3):95-104.XU Ming,HUANG Yuan,ZHANG Rui. Seismic analysis of precast shear wall with horizontal seam[J]. Earthquake Engineering and Engineering Dynamics. 2014,34(3):95-104.(in Chinese)
[21]赵作周,梁志远,钱稼茹.高轴压比SRC剪力墙抗震性能分析[J].建筑结构,2009(1):41-44.ZHAO Zuozhou,LIANG Zhiyuan,QIAN Jiaru. Study on seismic behavior of SRC shear walls under hign axial compression ratio[J]. Building Structure,2009(1):41-44.(in Chinese)