深水区高墩大跨预应力混凝土连续刚构桥弹性地震响应研究
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摘要
针对深水库区高墩大跨径预应力混凝土刚构桥的结构特点,考虑桩-土相互和动水之间的耦合作用,采用等代刚度法和大型通用有限元程序ANSYS,对某预应力混凝土刚构进行了线弹性地震响应分析,分别研究了横梁设置位置对下部结构和上部结构顺桥向和横桥向的地震响应特点。研究结果表明:随水深与墩高比h/H的加大,顺桥向地震波作用下,主梁根部及各跨跨中竖向弯矩增幅较大,其余变化较小;横桥向地震波作用下,边墩墩顶以及中墩墩顶和墩底横向弯矩增幅较大,其余变化较小。
According to the feature of prestressing concrete rigid frame bridge with long span and high piers located in deep water,the coupled action for pile and soil and dynamic water was considered,on the basis of the equivalent rigidity method and the FEM propram,the seismic response of prestressing concrete rigid frame bridge with long span and high piers the bridge model was analyzed,the seismic response feature on setting location of beam for lower and topper structure along and cross bridge was studied.The studied results indicate: with increment of depth of water and height of pier,the vertical moment for the root and mid span of main beam has a large amplify under action of seismic response along bridge,and the moment in the other part become little obvious,with increment of depth of water and height of pier,the cross moment for the pier top and per bottom of main beam has a large amplify under action of seismic response along bridge,and the moment in the other part become little obvious.
According to the feature of prestressing concrete rigid frame bridge with long span and high piers located in deep water,the coupled action for pile and soil and dynamic water was considered,on the basis of the equivalent rigidity method and the FEM propram,the seismic response of prestressing concrete rigid frame bridge with long span and high piers the bridge model was analyzed,the seismic response feature on setting location of beam for lower and topper structure along and cross bridge was studied.The studied results indicate: with increment of depth of water and height of pier,the vertical moment for the root and mid span of main beam has a large amplify under action of seismic response along bridge,and the moment in the other part become little obvious,with increment of depth of water and height of pier,the cross moment for the pier top and per bottom of main beam has a large amplify under action of seismic response along bridge,and the moment in the other part become little obvious.
引文
[1]黄信,李忠献.动水压力作用对深水桥墩地震响应的影响[J].木工程学报,2011,44(1):65-73.HUANG Xin,LI Zhong-xian.Influence of hydrodynamic pressure on seismic response of bridge piers in deep water[J].China Civil Engineering Journal,2011,44(1):65-73.
[2]王君杰,赖伟,胡世德.深水高桩基础桥梁地震水动力效应分析[J].同济大学学报(自然科学版),2011,39(5):650-655.WANG Jun-jie,LAI Wei,HU Shi-de.Seismic hydrodynamic effects on group-pile foundations with caps merged in water[J].Journal of Tongji University(Natural Science),2011,39(5):650-655.
[3]刘振宇,李乔,赵灿晖,等.深水连续刚构桥地震响应分析[J].地震工程与工程振动,2009,29(4):119-124.LIU Zhen-yu,LI Qiao,ZHAO Can-hui,et al.Analysis of seismic responses of continuous rigid-frame bridge in deep water[J].Journal of Eearthquake Engineering and Engineering Vibration,2009,29(4):119-124.
[4]张志荣,张少勇,潘瑾.深水高墩大跨连续刚构桥的地震响应分析[J].交通科技,2009,235(4):32-34.ZHANG Zhi-rong,ZHANG Shao-yong,PAN Jin.Analysis of the seismic response for Long-span continuous rigid-frame bridge with high-rise pier in deep water[J].Transportation Science and Technology,2009,235(4):32-34.
[5]冀伟,刘世忠.宏基大桥深水高墩大跨连续刚构桥地震响应分析[J].兰州交通大学学报,2009,28(4):45-48.JI Wei,LIU Shi-zhong.Seismic response analysis of a large-span continuous rigid frame of Hongji bridge with high piers in deep water[J].Journal of Lanzhou Jiaotong University,2009,28(4):45-48.
[6]张宁勇.深水桥梁地震反应特性分析[D].上海:同济大学,2002.ZHANG Ning-yong.Seismic response analysis of bridge in deep water reservoir[D].Shanghai:Tongji University,2002.
[7]周勇军.高墩大跨曲线连续刚构桥地震响应的设计参数研究[D].西安:长安大学,2006.ZHOU Yong-jun.Study on design parameters affecting the seismic response of curved continuous rigid frame bridges with long-span and high-pier[D].Xi’an:Chang’an Universtiy,2006.
[8]JTG D63-2007.公路桥涵地基及基础设计规范[S].JTG D63-2007,2007.JTG D63-2007.Specification for design of ground base and foundation of highway bridge and culvert[S].JTG D63-2007,2007.
[9]陈峰,郑建岚.自密实混凝土自由收缩试验[J].建筑科学与工程学报,2011,28(2):28-31.CHEN Feng,ZHENG Jian-lan.Experiment on free shrinkage of self-companting concrete[J].Journal of Architecture and Civil Engineering,2011,28(2):28-31.
[10]薛伟辰,胡于明,王巍.预应力混凝土梁徐变性能试验[J].中国公路学报,2008,21(4):61-66.XUE Wei-chen,HU Yu-ming,WANG Wei.Experiment on creep behavior of prestressed concrete beams[J].China Journal of Highway and Transport,2008,21(4):61-66.
[2]王君杰,赖伟,胡世德.深水高桩基础桥梁地震水动力效应分析[J].同济大学学报(自然科学版),2011,39(5):650-655.WANG Jun-jie,LAI Wei,HU Shi-de.Seismic hydrodynamic effects on group-pile foundations with caps merged in water[J].Journal of Tongji University(Natural Science),2011,39(5):650-655.
[3]刘振宇,李乔,赵灿晖,等.深水连续刚构桥地震响应分析[J].地震工程与工程振动,2009,29(4):119-124.LIU Zhen-yu,LI Qiao,ZHAO Can-hui,et al.Analysis of seismic responses of continuous rigid-frame bridge in deep water[J].Journal of Eearthquake Engineering and Engineering Vibration,2009,29(4):119-124.
[4]张志荣,张少勇,潘瑾.深水高墩大跨连续刚构桥的地震响应分析[J].交通科技,2009,235(4):32-34.ZHANG Zhi-rong,ZHANG Shao-yong,PAN Jin.Analysis of the seismic response for Long-span continuous rigid-frame bridge with high-rise pier in deep water[J].Transportation Science and Technology,2009,235(4):32-34.
[5]冀伟,刘世忠.宏基大桥深水高墩大跨连续刚构桥地震响应分析[J].兰州交通大学学报,2009,28(4):45-48.JI Wei,LIU Shi-zhong.Seismic response analysis of a large-span continuous rigid frame of Hongji bridge with high piers in deep water[J].Journal of Lanzhou Jiaotong University,2009,28(4):45-48.
[6]张宁勇.深水桥梁地震反应特性分析[D].上海:同济大学,2002.ZHANG Ning-yong.Seismic response analysis of bridge in deep water reservoir[D].Shanghai:Tongji University,2002.
[7]周勇军.高墩大跨曲线连续刚构桥地震响应的设计参数研究[D].西安:长安大学,2006.ZHOU Yong-jun.Study on design parameters affecting the seismic response of curved continuous rigid frame bridges with long-span and high-pier[D].Xi’an:Chang’an Universtiy,2006.
[8]JTG D63-2007.公路桥涵地基及基础设计规范[S].JTG D63-2007,2007.JTG D63-2007.Specification for design of ground base and foundation of highway bridge and culvert[S].JTG D63-2007,2007.
[9]陈峰,郑建岚.自密实混凝土自由收缩试验[J].建筑科学与工程学报,2011,28(2):28-31.CHEN Feng,ZHENG Jian-lan.Experiment on free shrinkage of self-companting concrete[J].Journal of Architecture and Civil Engineering,2011,28(2):28-31.
[10]薛伟辰,胡于明,王巍.预应力混凝土梁徐变性能试验[J].中国公路学报,2008,21(4):61-66.XUE Wei-chen,HU Yu-ming,WANG Wei.Experiment on creep behavior of prestressed concrete beams[J].China Journal of Highway and Transport,2008,21(4):61-66.
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