高阻尼混凝土带暗支撑剪力墙抗震性能试验研究
|
摘要
为了改善普通带暗支撑剪力墙的抗震性能,本文尝试将高阻尼混凝土代替普通混凝土应用于剪力墙中,同时提出了一种改善低剪力墙延性的新型配筋方案。为了准确把握这些新型带暗支撑剪力墙的抗震性能,共完成了6片不同形式剪力墙的低周反复加载试验,得到了各种剪力墙在低周往复荷载作用下的破坏模式、承载力、滞回曲线、刚度退化和耗能能力等抗震性能指标,考察了剪跨比、轴压比对剪力墙抗震性能的影响,论证了高阻尼混凝土带暗支撑剪力墙与新型低剪力墙配筋方案的可行性。试验结果表明:与普通混凝土带暗支撑剪力墙相比,高阻尼混凝土带暗支撑剪力墙的阻尼比、变形能力和耗能能力均有较大幅度提高,后期刚度稳定性更好;与普通带暗支撑低剪力墙相比,新型配筋低剪力墙的延性和耗能能力显著提高,具有良好的承载力,滞回环更饱满,抗震性能得到显著改善。
In order to improve the seismic performance of common concrete shear wall with concealed bracings,high damping concrete instead of ordinary concrete is applied to the shear wall as described in this paper.In the meantime,a new reinforcement scheme for improving the ductility of low shear-span ratio shear wall is putted forward.In this paper,the experimental study on the seismic performance of six different types of shear walls under cyclic loading is carried out,and also the failure characteristics,bearing capacity,ductility,hysteretic curve,stiffness attenuation and energy dissipation performance of the proposed shear wall are analyzed systematically.Based on the experimental study,the influence of axial-load ratio and shear-span ratio on the seismic performance of shear wall is discussed,and the application of high damping concrete shear wall with concealed bracings and the feasibility of low-rise shear wall reinforcement scheme are demonstrated.The test results indicate that compared with the common concrete shear wall with concealed bracings,the damping ratio,the deformability and the energy dissipation capacity of high damping concrete shear wall with concealed bracings are increased obviously,and the stability of their stiffness at later stages is much better.It is also shown that compared with the low-rise shear wall with common reinforcement scheme,the new type of low-rise shear wall shows better ductility and energy dissipation capacity,adequate bearing capacity,plumber hysteretic loops and good seismic performance.
In order to improve the seismic performance of common concrete shear wall with concealed bracings,high damping concrete instead of ordinary concrete is applied to the shear wall as described in this paper.In the meantime,a new reinforcement scheme for improving the ductility of low shear-span ratio shear wall is putted forward.In this paper,the experimental study on the seismic performance of six different types of shear walls under cyclic loading is carried out,and also the failure characteristics,bearing capacity,ductility,hysteretic curve,stiffness attenuation and energy dissipation performance of the proposed shear wall are analyzed systematically.Based on the experimental study,the influence of axial-load ratio and shear-span ratio on the seismic performance of shear wall is discussed,and the application of high damping concrete shear wall with concealed bracings and the feasibility of low-rise shear wall reinforcement scheme are demonstrated.The test results indicate that compared with the common concrete shear wall with concealed bracings,the damping ratio,the deformability and the energy dissipation capacity of high damping concrete shear wall with concealed bracings are increased obviously,and the stability of their stiffness at later stages is much better.It is also shown that compared with the low-rise shear wall with common reinforcement scheme,the new type of low-rise shear wall shows better ductility and energy dissipation capacity,adequate bearing capacity,plumber hysteretic loops and good seismic performance.
引文
[1]曹万林,庞国新,董宏英,等.带暗支撑剪力墙中暗支撑型式及其合理设计研究[J].地震工程与工程振动,2000,20(4):73-79.CAO Wanlin,PANG Guoxin,DONG Hongying,et al.Studies of form and reasonable design of concealed bracings in R.C.shear walls[J].Journal of Earthquake Engineering and Engineering Vibration,2000,20(4):73-79.(in Chinese)
[2]曹万林,张建伟,田宝发,等.钢筋混凝土带暗支撑中高剪力墙抗震性能试验研究[J].建筑结构学报,2002,23(6):26-32.CAO Wanlin,ZHANG Jianwei,TIAN Baofa,et al.Experimental study on seismic behavior of mid-rise RC shear wall with concealed bracings[J].Journal of Building Structures,2002,23(6):26-32.(in Chinese)
[3]曹万林,张建伟,崔立长,等.钢筋混凝土带暗支撑双功能低矮剪力墙抗震性能试验研究[J].建筑结构学报,2003,24(1):46-53.CAO Wanlin,ZHANG Jianwei,CUI Lizhang,et al.Experimental study on seismic behavior of low rise double function RC shear wall with concealed bracings[J].Journal of Building Structures,2003,24(1):46-53.(in Chinese)
[4]ACI(2002),ACI 318-02 Building Code Requirements for Structural Concrete and Commentary[S].American Concrete Institute Committee318,Farmington Hill,Michigan,U.S.A.
[5]Fu Xuli,Chung D D L.Vibration damping admixture for cement[J].Cement and Concrete Research,1996,26:69-75.
[6]Yoshihiko Ohama.Recent progress in concrete-polymer composites[J].Advanced Cement Based Materials,1997,5(2):31-40
[7]Fu Xuli,Li Xiaohui,Chung D D L.Improving the vibration damping capacity of cement[J].Materials Science,1998,33:3601-3605.
[8]Wong W Cz,Fang Ping,Pan J K.Polymer effects on the vibration damping behavior of cement[J].Journal of Materals in Civil Engineering.ASCE,2003,554-556.
[9]欧进萍,关新春.土木工程的智能结构体系研究与发展[J].地震工程与工程振动,1999,19(2):21-28.OU Jinping,GUAN Xinchun.State-of-the-art of smart structural systems in civil engineering[J].Journal of Earthquake Engineering and Engineering Vibration.1999,(2):21-28.(in Chinese)
[10]汪梦甫,宋兴禹.高阻尼混凝土构件阻尼性能研究[J].振动与冲击,2012,31(11):173-179.WANG Mengfu,SONG Xingyu.Experimental research on damping property of high damping concrete members[J].Journal of Vibration and Shock,2012,31(11):173-179.(in Chinese)
[11]汪梦甫,宋兴禹.内藏钢板-钢筋暗支撑耗能低剪力墙结构体系,中国,ZL201220022614.6(P),2012。WANG Mengfu,SONG Xingyu.A new type of energy dissipation low-rise shear wall with concealed bracings and steel plate,China,ZL201220022614.6(P),2012.(in Chinese)
[12]JGJ 101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1996.JGJ 101—1996 Specification for Seismic Test Methods of Buildings[S]Beijing:China Architecture&Building Press,1996.(in Chinese)
[2]曹万林,张建伟,田宝发,等.钢筋混凝土带暗支撑中高剪力墙抗震性能试验研究[J].建筑结构学报,2002,23(6):26-32.CAO Wanlin,ZHANG Jianwei,TIAN Baofa,et al.Experimental study on seismic behavior of mid-rise RC shear wall with concealed bracings[J].Journal of Building Structures,2002,23(6):26-32.(in Chinese)
[3]曹万林,张建伟,崔立长,等.钢筋混凝土带暗支撑双功能低矮剪力墙抗震性能试验研究[J].建筑结构学报,2003,24(1):46-53.CAO Wanlin,ZHANG Jianwei,CUI Lizhang,et al.Experimental study on seismic behavior of low rise double function RC shear wall with concealed bracings[J].Journal of Building Structures,2003,24(1):46-53.(in Chinese)
[4]ACI(2002),ACI 318-02 Building Code Requirements for Structural Concrete and Commentary[S].American Concrete Institute Committee318,Farmington Hill,Michigan,U.S.A.
[5]Fu Xuli,Chung D D L.Vibration damping admixture for cement[J].Cement and Concrete Research,1996,26:69-75.
[6]Yoshihiko Ohama.Recent progress in concrete-polymer composites[J].Advanced Cement Based Materials,1997,5(2):31-40
[7]Fu Xuli,Li Xiaohui,Chung D D L.Improving the vibration damping capacity of cement[J].Materials Science,1998,33:3601-3605.
[8]Wong W Cz,Fang Ping,Pan J K.Polymer effects on the vibration damping behavior of cement[J].Journal of Materals in Civil Engineering.ASCE,2003,554-556.
[9]欧进萍,关新春.土木工程的智能结构体系研究与发展[J].地震工程与工程振动,1999,19(2):21-28.OU Jinping,GUAN Xinchun.State-of-the-art of smart structural systems in civil engineering[J].Journal of Earthquake Engineering and Engineering Vibration.1999,(2):21-28.(in Chinese)
[10]汪梦甫,宋兴禹.高阻尼混凝土构件阻尼性能研究[J].振动与冲击,2012,31(11):173-179.WANG Mengfu,SONG Xingyu.Experimental research on damping property of high damping concrete members[J].Journal of Vibration and Shock,2012,31(11):173-179.(in Chinese)
[11]汪梦甫,宋兴禹.内藏钢板-钢筋暗支撑耗能低剪力墙结构体系,中国,ZL201220022614.6(P),2012。WANG Mengfu,SONG Xingyu.A new type of energy dissipation low-rise shear wall with concealed bracings and steel plate,China,ZL201220022614.6(P),2012.(in Chinese)
[12]JGJ 101—1996建筑抗震试验方法规程[S].北京:中国建筑工业出版社,1996.JGJ 101—1996 Specification for Seismic Test Methods of Buildings[S]Beijing:China Architecture&Building Press,1996.(in Chinese)
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心