往复荷载下配置高强钢筋桥墩滞回性能试验
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摘要
为研究配置HRB500高强钢筋的混凝土桥墩的滞回性能,进行了4个混凝土桥墩试件的低周往复加载试验,分析剪跨比、纵筋强度和箍筋强度对混凝土桥墩受力破坏形态的影响,对比配置高强钢筋桥墩与普通钢筋桥墩,两者滞回性能的异同。结果表明,随着箍筋的有效约束下桥墩试件剪跨比的增加,试件的变形能力增加,滞回曲线更饱满,刚度退化减缓。配置高强纵筋及高强箍筋桥墩试件的刚度退化、滞回曲线等滞回特性均优于配置普通钢筋桥墩试件,同时提高了试件的承载能力及变形能力。
Four concrete bridge piers are tested under a low cycle loading to study the hysteretic behavior of HRB500 high strength reinforced concrete bridge piers. The effects of the shear span ratio, the longitudinal reinforcement and the stirrup strength grade on concrete bridge pier's failure modes are analyzed. The comparison of the hysteretic behavior between the high strength reinforced concrete bridge piers and the ordinarily reinforced concrete bridge piers shows that with the increase of the shear span ratio and the effective constraint of the stirrup, the deformability is increased, the hysteretic curve becomes fuller and the rigidity degeneration slows down. The hysteretic behavior of the concrete bridge piers with a high strength longitudinal reinforcement and a high strength stirrup, such as the rigidity degeneration and the hysteretic curve, is improved as compared to the ordinarily reinforced concrete bridge piers. The bearing capacity and the deformability of the HRB500 high strength reinforced concrete bridge piers are enhanced.
Four concrete bridge piers are tested under a low cycle loading to study the hysteretic behavior of HRB500 high strength reinforced concrete bridge piers. The effects of the shear span ratio, the longitudinal reinforcement and the stirrup strength grade on concrete bridge pier's failure modes are analyzed. The comparison of the hysteretic behavior between the high strength reinforced concrete bridge piers and the ordinarily reinforced concrete bridge piers shows that with the increase of the shear span ratio and the effective constraint of the stirrup, the deformability is increased, the hysteretic curve becomes fuller and the rigidity degeneration slows down. The hysteretic behavior of the concrete bridge piers with a high strength longitudinal reinforcement and a high strength stirrup, such as the rigidity degeneration and the hysteretic curve, is improved as compared to the ordinarily reinforced concrete bridge piers. The bearing capacity and the deformability of the HRB500 high strength reinforced concrete bridge piers are enhanced.
引文
[1]孙治国,王东升,郭迅,等.汶川大地震绵竹市回澜立交桥震害调查[J].地震工程与工程振动,2009,29(4):132-138.Sun Zhiguo,Wang Dongsheng,Guo Xun,et al.Damage investigation ofHuilan interchange in Mianzhu after Wenchuan earthquake[J].Earthquake Engineering and Engineering Vibration,2009,29(4):132-138.
[2]Chang K C,Chang D W,Tsai M H,et al.Seismic performance ofhighway bridges[J].Earthquake Engineering and EngineeringSeismology,2000,2(1):85-105.
[3]Hashimoto S,Fujino Y,Abe M.Damage analysis of Hanshin expresswayviaducts during 1995 Kobe earthquake.II:damage mode of singlereinforced concrete piers[J].Journal of Bridge Engineering,2005,10(1):54-60.
[4]Mitchell D,Bruneau M,Williams M,et al.Performance of bridges inthe 1994 Northridge earthquake[J].Canadian Journal of Civil Engineering,1995,22(2):415-427.
[5]王吉忠,王苏岩,黄承逵.CFRP加固高强混凝土柱抗震性能和延性研究[J].大连理工大学学报,2008,48(5):708-714.Wang Jizhong,Wang Suyan,Huang Chengkui.Research on ductilityand earthquake-resistance of high-strength concrete column confinedby CFRP[J].Journal of Dalian University of Technology,2008,48(5):708-714.
[6]刘钧,侯杰,邱法维.钢筋棍凝土独柱式桥墩的拟动力试验研究[J].工程抗震与加固改造,2006,28(5):43-48.Liu Jun,Hou Jie,Qiu Fawei.Pseudo dynamic test research ofreinforced concrete bridge column pier[J].Earthquake ResistantEngineering and Retrofitting,2006,28(5):43-48.
[7]司炳君,孙治国,王东升,等.利用ANSYS模拟桥墩滞回性能的建模方法[J].武汉理工大学学报,2007 29(6):76-79.Si Bingjun,Sun Zhiguo,Wang Dongheng,et al.Modeling methods onsimulation of hysteretic behavior of bridge piers based on ANSYS software[J].Journal of Wuhan University of Technology,2007,29(6):76-79.
[8]中国公交规划设计院.JTG D62—2004公路钢筋混凝土及预应力混凝土桥涵设计规范混凝土结构设计规范[S].北京:人民交通出版社,2004.China Communications Planning and Design Institute.JTG D62—2004Code for design of highway reinforced concrete and prestressedconcrete bridges and culverts[S].Beijing:China Communications Press,2004.
[2]Chang K C,Chang D W,Tsai M H,et al.Seismic performance ofhighway bridges[J].Earthquake Engineering and EngineeringSeismology,2000,2(1):85-105.
[3]Hashimoto S,Fujino Y,Abe M.Damage analysis of Hanshin expresswayviaducts during 1995 Kobe earthquake.II:damage mode of singlereinforced concrete piers[J].Journal of Bridge Engineering,2005,10(1):54-60.
[4]Mitchell D,Bruneau M,Williams M,et al.Performance of bridges inthe 1994 Northridge earthquake[J].Canadian Journal of Civil Engineering,1995,22(2):415-427.
[5]王吉忠,王苏岩,黄承逵.CFRP加固高强混凝土柱抗震性能和延性研究[J].大连理工大学学报,2008,48(5):708-714.Wang Jizhong,Wang Suyan,Huang Chengkui.Research on ductilityand earthquake-resistance of high-strength concrete column confinedby CFRP[J].Journal of Dalian University of Technology,2008,48(5):708-714.
[6]刘钧,侯杰,邱法维.钢筋棍凝土独柱式桥墩的拟动力试验研究[J].工程抗震与加固改造,2006,28(5):43-48.Liu Jun,Hou Jie,Qiu Fawei.Pseudo dynamic test research ofreinforced concrete bridge column pier[J].Earthquake ResistantEngineering and Retrofitting,2006,28(5):43-48.
[7]司炳君,孙治国,王东升,等.利用ANSYS模拟桥墩滞回性能的建模方法[J].武汉理工大学学报,2007 29(6):76-79.Si Bingjun,Sun Zhiguo,Wang Dongheng,et al.Modeling methods onsimulation of hysteretic behavior of bridge piers based on ANSYS software[J].Journal of Wuhan University of Technology,2007,29(6):76-79.
[8]中国公交规划设计院.JTG D62—2004公路钢筋混凝土及预应力混凝土桥涵设计规范混凝土结构设计规范[S].北京:人民交通出版社,2004.China Communications Planning and Design Institute.JTG D62—2004Code for design of highway reinforced concrete and prestressedconcrete bridges and culverts[S].Beijing:China Communications Press,2004.
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