预应力度对预应力混凝土桥墩抗震性能影响

英文篇名：Study on the Effect of Prestressed Degree on Seismic Performance of Prestressed Concrete Pier
中文刊名：武汉理工大学学报(交通科学与工程版)
英文刊名：Journal of Wuhan University of Technology(Transportation Science & Engineering)
作者：王会利 ; 秦泗凤 ; 张哲
英文作者：WANG Huili1) QIN Sifeng2) ZHANG Zhe1)(The Bridge Science Research Institute ; Dalian University of Technology ; Dalian 116023 ; China)1)(Research Center for Numerical Tests on Material ; Dalian University ; Dalian 116022 ; China)2)
中文关键词：预应力混凝土 ; 桥墩 ; 抗震性能 ; 塑性铰
英文关键词：prestressed concrete ; pier ; seismic performance ; plastic hinge
出版日期：2013-02-15
机构：大连理工大学桥梁工程研究所;大连大学材料破坏力学数值试验研究中心;
年：2013
期：01
出版单位：武汉理工大学学报(交通科学与工程版)

摘要

采用双直线钢筋模型和Kent-R.Park混凝土模型,研究预应力度对预应力混凝土桥墩抗震性能的影响,模拟得到墩底塑性铰特性.通过设置不同的预应力钢束,改变桥墩预应力度,分析得到对应的墩底塑性铰的弯矩-曲率滞回曲线.结果表明,预应力混凝土桥墩比普通钢筋混凝土桥墩,具有极限弯矩大,耗能能力强的特点.在混凝土抗压强度范围内,随着桥墩预应力度的增加,桥墩的极限弯矩增大,耗能能力增强.
The effect of prestressed degree on seismic performance of prestressed concrete pier is studied.The plastic hinge properties is gotten by means of reinforce bilinear model and concrete Kent-R.Park model.The plastic hinge hysteresisloop is obtained by setting kinds of prestressing tendons.The result of analysis indicates that the prestressed concrete pier can bear larger limit moment and more large dissipation energy ability than common concrete pier.Within the limit of concrete crushing strength,with the increase of prestressed degree,its relative limit moment of the prestressed concrete pier rises,and dissipation energy ability rises.

引文

[1]范立础.桥梁抗震[M].上海:同济大学出版社,1997.
    [2]葛继平,刘丰,魏红一,等.胶接缝连接的节段拼装桥墩抗震分析模型[J].武汉理工大学学报:交通科学与工程版,2009,33(5):880-883.
    [3]KWAN W P,BILLINGTON S L.Unbonded postten-sioned concrete bridge piers I:monotonic and cyclic analyses[J].Journal of Bridge Engineering(ASCE),2003(3):92-101.
    [4]KWAN W P,BILLINGTON S L.Unbonded postten-sioned concrete bridge piers II:seismic analyses[J].Journal of Bridge Engineering(ASCE),2003(3):102-111.
    [5]刘丰.节段拼装预应力混凝土桥墩拟静力试验和分析研究[D].上海:同济大学,2008.
    [6]刘丰,魏红一,王志强.PRC桥墩抗震性能研究现状和展望[J].结构工程师,2007(8):55-58.
    [7]王志强,葛继平,魏红一.东海大桥预应力混凝土桥墩抗震性能分析[J].同济大学学报:自然科学版,2008(2):44-48.
    [8]赵宁,魏红一.节段拼装桥墩拟静力试验研究[J].上海公路,2008(1):26-30.
    [9]BILLINGTON S L,YOON J K.Cyclic response of unbonded posttensioned precast columns with ductile fiber-reinforced concrete[J].Journal of Bridge Engi-neering(ASCE),2004,9(4):353-363.
    [10]OU Y C,CHIEWANICHAKORN M,AREF A J,et al.Seismic performance of segmental precast un-bonded posttensioned concrete bridge columns[J].Journal of Bridge Engineering(ASCE),2007(11):1636-1647.
    [11]谢旭.桥梁结构地震响应分析与抗震设计[M].北京:人民交通出版社,2006.
    [12]叶列平.混凝土结构[M].北京:清华大学出版社,2002.
    [13]程海根,董明,李睿.约束混凝土压弯构件曲率延性分析[J].昆明理工大学学报,2001,26(6):89-93.
    [14]吕西林,金国芳,吴晓涵.钢筋混凝土结构非线性有限元理论与应用[M].上海:同济大学出版社,2002.
    [15]邱文亮,姜萌,张哲.城市独柱墩桥梁结构体系非线性抗震研究[J].地震工程与工程振动,2010,30(1):161-166.
    [16]秦泗凤.基于性能的桥梁静力非线性地震响应分析方法研究[D].大连:大连理工大学,2008.