HRB500钢筋混凝土桥墩承载能力及延性性能研究
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摘要
为研究剪跨比、钢筋强度及箍筋间距对混凝土桥墩承载能力及延性性能的影响,设计了4个混凝土实心墩试件(3个试件配置了HRB500钢筋、1个试件配置了HRB335钢筋),采用拟静力加载方案进行恒定轴压力作用下的低周往复加载试验,分析试件破坏特征、承载能力、延性性能、滞回曲线及耗能能力。研究表明:剪跨比较大的试件呈弯曲破坏形态,剪跨比较小的试件呈弯剪破坏形态;对于剪跨比较大的桥墩,配置HRB500钢筋的试件比配置HRB335钢筋的试件具有更高的承载能力和延性性能,配置HRB500的钢筋能够改善试件的滞回性能;增加箍筋间距能够提高配置HRB500钢筋试件的承载能力和延性性能。
To study the influences of the shear-to-span ratios,steel bar strength and stirrup spacing on the bearing capacity and ductility behavior of reinforced concrete(RC)bridge piers,4specimens of the solid RC piers(3specimens were arranged with the HRB500 steel bars and 1with the HRB335 steel bars)were designed and prepared.The low-cycle repeated loading tests were made for the specimens under the constant axial compression,using the scheme of the quasi-static loading and the failure characteristics,bearing capacity,ductility behavior,hysteric curves and energy dissipating capacity of the specimens were analyzed.The results of the analysis indicate that a specimen having the great shear-to-span ratio exhibits the flexural failure pattern while a specimen having the little shear-to-span ratio exhibits the flexural shear failure pattern.As for the RC bridge piers having the great shear-to-span ratios,the specimens arranged with the HRB500 steel bars can have greater bearing capacity and ductility behavior than the specimen with the HRB335 steel bars will have.The arrangement of the HRB500 steel bars can improve the hysteric behavior of the specimens and the increase of the stirrup spacing can improve the bearing capacity and ductility behavior of the specimens with the HRB500 steel bars.
引文
[1]贡金鑫,张勤,王雪婷.从汶川地震中桥梁震害看现行国内外桥梁抗震设计方法(二)[J].公路交通科技,2010,27(10):35-52.(GONG Jin-xin,ZHANG Qin,WANG Xue-ting.Comparative Study on Bridge Seismic Design Approaches in Current Domestic and Foreign Specifications Based on Survey of Disaster in Wenchuan Earthquake(II)[J].Journal of Highway and Transportation Research and Development,2010,27(10):35-52.in Chinese)
    [2]JTG/T B02-01-2008,公路桥梁抗震设计细则[S].(JTG/T B02-01-2008,Guidelines for Seismic Design of Highway Bridges[S].)
    [3]孙卓,李建中,闫贵平,等.钢筋混凝土单柱式桥墩抗震性能试验研究[J].同济大学学报(自然科学版),2006,(2):160-164.(SUN Zhuo,LI Jian-zhong,YAN Gui-ping,et al.Experimental Study on Seismic Performance of Reinforced Concrete One-Column Bridge Piers[J].Journal of Tongji University(Natural Science),2006,(2):160-164.in Chinese)
    [4]Moehle J,Fenves G,Mayes R,et al.Highway Bridges and Traffic Management[J].Earthquake Spectra,1995,11(S2):287-372.
    [5]Lee D H,Choi E,Zi G.Evaluation of Earthquake Deformation and Performance for RC Bridge Piers[J].Engineering Structures,2005,27(10):1 451-1 464.
    [6]司炳君,孙治国,王东升,等.高强箍筋约束高强混凝土柱抗震性能研究综述[J].土木工程学报,2009,42(4):1-9.(SI Bing-jun,SUN Zhi-guo,WANG Dong-sheng,et al.Review of Researches on the Seismic Behavior of High Strength Concrete Columns with High Strength Transverse Reinforcement[J].China Civil Engineering Journal,2009,42(4):1-9.in Chinese)
    [7]周行人,刘海波,胡建华.高烈度区高墩桥梁抗震措施研究[J].桥梁建设,2011,(2):42-46.(ZHOU Xing-ren,LIU Hai-bo,HU Jian-hua.Study of Seismic Resistance Measures for High-Rise Pier Bridges Located in High Intensity Seismic Region[J].Bridge Construction,2011,(2):42-46.in Chinese)
    [8]李永学,刘贵位.钢筋混凝土矩形桥墩的延性抗震分析[J].公路,2010,(10):20-27.(LI Yong-xue,LIU Gui-wei.Seismic Analysis of Ductility of Reinforced Concrete Bridge Piers with Rectangle Sections[J].Highway,2010,(10):20-27.in Chinese)
    [9]Kim T H,Lee K M,Yoon C,et al.Inelastic Behavior and Ductility Capacity of Reinforced Concrete Bridge Piers Under Earthquake I:Theory and Formulation[J].Journal of Structural Engineering,ASCE,2003,129(9):1 199-1 207.
    [10]黄峥,白植舟.钢筋混凝土桥墩延性影响因素理论研究[J].桥梁建设,2012,42(4):28-33.(HUANG Zheng,BAI Zhi-zhou.Theoretical Study of Factors Affecting Ductility of RC Piers[J].Bridge Construction,2012,42(4):28-33.in Chinese)

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