基于位移设计的钢筋混凝土桥墩抗震性能试验研究(I):拟静力试验
|
摘要
通过拟静力试验研究了基于位移设计钢筋混凝土桥墩的抗震性能。利用基于位移抗震设计方法和桥梁抗震规范方法设计了各2根和1根1:2.5比例钢筋混凝土桥墩试件,对低周反复荷载作用下试件试验破坏形态、承载力、位移延性、滞回耗能、刚度退化等方面进行了比较分析,可以认为基于位移设计的钢筋混凝土桥墩能够达到预期的延性抗震要求,并且在相对耗能能力(与理想弹塑性模型相比)、刚度退化性能方面与现行规范抗震设计方法设计的桥墩相当。试验表明建议的钢筋混凝土桥墩基于位移的抗震设计方法是实际可行的。
Seismic performance of reinforced concrete bridge piers designed by using displacement-based method is verified by the quasi-static test.Two specimens with 1∶2.5scale are designed by seismic design method based on displacement,and another reference specimen with same scale is designed according to bridge seismic design code.The damage states,bearing capacities,ductility,dissipated energy and stiffness degradation of specimens are compared when the specimens are subjected to cyclic loading.It is shown that seismic ductility capacities of reinforced concrete bridge piers designed on the basis of displacement may meet the seismic demands expected,especially the capacities of relative dissipated energy(compared with ideal elasto-plastic model) and stiffness degradation for the bridge pier almost have the same as that designed by current seismic design code.Test results suggest the proposed seismic design method based on displacement is feasible.
Seismic performance of reinforced concrete bridge piers designed by using displacement-based method is verified by the quasi-static test.Two specimens with 1∶2.5scale are designed by seismic design method based on displacement,and another reference specimen with same scale is designed according to bridge seismic design code.The damage states,bearing capacities,ductility,dissipated energy and stiffness degradation of specimens are compared when the specimens are subjected to cyclic loading.It is shown that seismic ductility capacities of reinforced concrete bridge piers designed on the basis of displacement may meet the seismic demands expected,especially the capacities of relative dissipated energy(compared with ideal elasto-plastic model) and stiffness degradation for the bridge pier almost have the same as that designed by current seismic design code.Test results suggest the proposed seismic design method based on displacement is feasible.
引文
[1]Kowalsky MJ,Priestley MJ N,Macrae G A.Displacement-based design of RC bridge columns in seismic regions[J].Earthquake Eng.Stru.Dyn.1995,24:1623-1643.
[2]Calvi G M,Kingsley G R.Displacement-based seismic design of multi-degree-of-freedom bridge structures[J].Earthquake Eng.Stru.Dyn.1995,24:1247-1266.
[3]Kowalsky MJ.Adisplacement-based approach for the seismic design of continuous concrete bridges[J].Earthquake Eng.Stru.Dyn.2002,31:719-747.
[4]Chopra A K,Goel R K.Direct displacement-based design:use of inelastic vs.Elastic Design Spectra[J].Earthquake Spectra,2001,17(1):47-64.
[5]Xue Qiang,Chen Cheng-Chung.Performance based seismic design of structures:a direct displacement based approach[J].Engineering Struc-tures.2003,25:1803-1813.
[6]Calvi G M.Recent experience and innotative approaches in design and assessment of bridges[C].13WCEE.Canada,2004,Reference NO.5009.
[7]杨玉民,胡勃,袁万城.基于位移反应谱的连续梁桥抗震设计简化方法[J].同济大学学报,1999,27(2):150-154.
[8]弓俊青,朱②.以位移为基础的钢筋混凝土桥梁墩柱抗震设计[J].中国公路学报,2001,14(4):42-46.
[9]黄建文,朱②.以位移为基础的钢筋混凝土连续梁桥抗震设计方法[J].中国公路学报,2005,18(2):28-33.
[10]黄建文,朱②.近场地震作用下钢筋混凝土桥墩基于位移的抗震设计[J].土木工程学报,2005,38(4):84-90.
[11]钱嫁茹,康钊,赵作周等.在用市政桥梁基于位移的抗震安全评估[J].工程力学,2006,23(增刊):194-202.
[12]王东升,李宏男,赵颖华等.钢筋混凝土桥墩基于位移的抗震设计方法[J].土木工程学报,2006,39(10):80-86.
[13]王东升,李宏男,赵颖华等.Ay-Dy格式地震需求谱及其在结构基于性能抗震设计中的应用[J],建筑结构学报,2006,27(1):60-65.
[14]Ghee A B,Priestley MJ N,Paulay T.Seismic Shear Strength of Circular Reinforced Concrete Columns[J].ACI Structural Journal,1989,86(1):45-59.
[15]JGJ101-96,建筑抗震试验方法规程[S].北京:中国建筑出版社,1997.
[16]Bayrak O,Sheikh S A.High-strength concrete columns under simulated earthquake loading[J].ACI Structural Journal,1997,94(6):708-722.
[17]L啨geron Fr啨d啨ric,Paultre Patrick.Behavior of high-strength concrete columns under cyclic flexure and constant axial load[J].ACI StructuralJournal,2000,97(4):591-601.
[18]杨新宝.钢筋混凝土桥梁抗震性能评估与加固[D].上海:同济大学,1997.
[19]曹万林,董宏英,胡国振等.不同暗支撑型式的带暗支撑双肢剪力墙抗震性能试验研究[J].土木工程学报,2005,38(8):18-25.
[20]JTJ004-89,公路工程抗震设计规范[S].北京:人民交通出版社,1990.
[2]Calvi G M,Kingsley G R.Displacement-based seismic design of multi-degree-of-freedom bridge structures[J].Earthquake Eng.Stru.Dyn.1995,24:1247-1266.
[3]Kowalsky MJ.Adisplacement-based approach for the seismic design of continuous concrete bridges[J].Earthquake Eng.Stru.Dyn.2002,31:719-747.
[4]Chopra A K,Goel R K.Direct displacement-based design:use of inelastic vs.Elastic Design Spectra[J].Earthquake Spectra,2001,17(1):47-64.
[5]Xue Qiang,Chen Cheng-Chung.Performance based seismic design of structures:a direct displacement based approach[J].Engineering Struc-tures.2003,25:1803-1813.
[6]Calvi G M.Recent experience and innotative approaches in design and assessment of bridges[C].13WCEE.Canada,2004,Reference NO.5009.
[7]杨玉民,胡勃,袁万城.基于位移反应谱的连续梁桥抗震设计简化方法[J].同济大学学报,1999,27(2):150-154.
[8]弓俊青,朱②.以位移为基础的钢筋混凝土桥梁墩柱抗震设计[J].中国公路学报,2001,14(4):42-46.
[9]黄建文,朱②.以位移为基础的钢筋混凝土连续梁桥抗震设计方法[J].中国公路学报,2005,18(2):28-33.
[10]黄建文,朱②.近场地震作用下钢筋混凝土桥墩基于位移的抗震设计[J].土木工程学报,2005,38(4):84-90.
[11]钱嫁茹,康钊,赵作周等.在用市政桥梁基于位移的抗震安全评估[J].工程力学,2006,23(增刊):194-202.
[12]王东升,李宏男,赵颖华等.钢筋混凝土桥墩基于位移的抗震设计方法[J].土木工程学报,2006,39(10):80-86.
[13]王东升,李宏男,赵颖华等.Ay-Dy格式地震需求谱及其在结构基于性能抗震设计中的应用[J],建筑结构学报,2006,27(1):60-65.
[14]Ghee A B,Priestley MJ N,Paulay T.Seismic Shear Strength of Circular Reinforced Concrete Columns[J].ACI Structural Journal,1989,86(1):45-59.
[15]JGJ101-96,建筑抗震试验方法规程[S].北京:中国建筑出版社,1997.
[16]Bayrak O,Sheikh S A.High-strength concrete columns under simulated earthquake loading[J].ACI Structural Journal,1997,94(6):708-722.
[17]L啨geron Fr啨d啨ric,Paultre Patrick.Behavior of high-strength concrete columns under cyclic flexure and constant axial load[J].ACI StructuralJournal,2000,97(4):591-601.
[18]杨新宝.钢筋混凝土桥梁抗震性能评估与加固[D].上海:同济大学,1997.
[19]曹万林,董宏英,胡国振等.不同暗支撑型式的带暗支撑双肢剪力墙抗震性能试验研究[J].土木工程学报,2005,38(8):18-25.
[20]JTJ004-89,公路工程抗震设计规范[S].北京:人民交通出版社,1990.
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