管桥耦合下管线悬索桥的动力特性和地震反应

详细信息    查看全文 | 推荐本文 |

英文篇名：Dynamic characteristics and seismic response of pipeline suspension bridge under pipe-bridge coupling effect 作者：杨永清 ; 冯睿为 ; 黄坤 ; 陈锦晶 ; 李晓斌 英文作者：YANG Yong-qing;FENG Rui-wei;HUANG Kun;CHEN Jin-jing;LI Xiao-bin;School of Civil Engineering,Southwest Jiaotong University;Institute of Civil Engineering and Transportation,Liaoning Technical University; 关键词：油气管道 ; 悬索桥 ; 地震响应 ; 动力特性 ; 行波效应 ; 一致激励 ; 耦合 ; 振型 英文关键词：oil and gas pipeline;;suspension bridge;;seismic response;;dynamic characteristic;;traveling wave effect;;uniform excitation;;coupling;;vibration mode 中文刊名：SYGY 英文刊名：Journal of Shenyang University of Technology 机构：西南交通大学土木工程学院;辽宁工程技术大学土木与交通学院; 出版日期：2016-03-02 16:42 出版单位：沈阳工业大学学报 年：2016 期：v.38;No.186 基金：国家自然科学基金资助项目(51508474) 语种：中文; 页：SYGY201602017 页数：5 CN：02 ISSN：21-1189/T 分类号：94-98

摘要

为了研究管线悬索桥大直径管线和桥梁的耦合作用对结构动力特性和地震反应的影响,以澜沧江管线悬索桥为研究对象,利用有限元软件建立实桥模型,分析了管线悬索桥在管桥耦合作用下的动力特性,并研究了管桥耦合对桥梁地震反应的影响.结果表明,与未耦合时相比,管桥耦合作用下桥梁结构的自振周期较长,自振模态被激励的先后顺序发生变化;在地震波激励下,管桥耦合作用对管线悬索桥不同构件的受力和变形具有不同的影响,其中索塔顺桥向剪力和主梁横向位移均减小,主梁上弦杆轴力和竖向挠度均增大.在计算过程中考虑管桥耦合作用的影响能够比较真实地反映结构实际的动力特性.
        In order to study the influence of coupling effect between large-diameter pipeline and bridge of pipeline suspension bridge on the dynamic characteristics and seismic response of the structure,the Lantsang river pipeline suspension bridge was regarded as the research object,and the real bridge model was established with finite element software. The dynamic characteristics of pipeline suspension bridge under the pipe-bridge coupling effect were analyzed,and the influence of pipe-bridge coupling on the seismic response of the bridge was studied. The results indicate that compared with no pipe-bridge coupling effect,the natural vibration period of the bridge structure is longer under the pipe-bridge coupling effect,and the excited order of natural vibration modes changes. Under the excitation of seismic wave,the pipe-bridge coupling effect has different influences on the force and deformation of different components. The shear force of cable pylon along the bridge and the lateral displacement of main girder decrease. However,the axial force of top chords and vertical deflection of main girder increase. The actual dynamic characteristics of the structure can be factually reflected through considering the pipe-bridge coupling effect in the calculation process.

引文

[1]伍小平,冯启民,焦双健,等.大跨度斜拉管线桥地震反应分析[J].地震工程与工程振动,2001,21(3):49-54.(WU Xiao-ping,FENG Qi-min,JIAO Shuang-jian,et al.Seismic response analysis of long-span cablestayed pipeline bridge[J].Earthquake Engineering and Engineering Dynamics,2001,21(3):49-54.)
    [2]庄小将,马芹刚,王丰平,等.大门大桥引桥过桥管线作用效应研究[J].桥梁建设,2011(6):50-53.(ZHUANG Xiao-jiang,MA Qin-gang,WANG Fengping,et al.Study of action effect of pipelines across approach bridge of Damen Bridge[J].Bridge Construction,2011(6):50-53.)
    [3]王同卫.跨海大桥大型过桥管线方案及安全性能评估方法研究[D].上海:同济大学,2010:30-60.(WANG Tong-wei.Research of evaluation methods for schemes and safety performance of large pipeline across sea-crossing bridges[D].Shanghai:Tongji University,2010:30-60.)
    [4]闫聚考,彭天波,李建中.泰州长江公路大桥振动台试验:试验设计及抗震结构体系试验结果分析[J].东南大学学报(自然科学版),2014,44(2):357-362.(YAN Ju-kao,PENG Tian-bo,LI Jian-zhong.Shake table test of Taizhou Changjiang Highway Bridge:test design and result analysis of seismic structural system[J].Journal of Southeast University(Natural Science Edition),2014,44(2):357-362.)
    [5]孟凡超,王仁贵,徐国平,等.悬索桥[M].北京:人民交通出版社,2011:50-150.(MENG Fan-chao,WANG Ren-gui,XU Guo-ping,et al.Suspension bridge[M].Beijing:China Communications Press,2011:50-150.)
    [6]徐源,丛龙.考虑土结构相互作用的框架结构地震时程分析[J].沈阳工业大学学报,2014,36(5):596-600.(XU Yuan,CONG Long.Seismic time history analysis for frame structure with considering soil-structure interaction[J].Journal of Shenyang University of Technology,2014,36(5):596-600.)
    [7]林丽霞,丁南宏,张元海,等.考虑阻尼值修正的双链式悬索桥地震响应分析[J].铁道科学与工程学报,2012,9(5):25-30.(LIN Li-xia,DING Nan-hong,ZHANG Yuan-hai,et al.Seismic response analysis of double chains suspension bridge considering modified damping value[J].Journal of Railway Science and Engineering,2012,9(5):25-30.)
    [8]杨海洋,钟毅,夏禾.铁路悬索桥纵向非一致激励地震响应分析[J].振动与冲击,2014,33(22):157-163.(YANG Hai-yang,ZHONG Yi,XIA He.Seismic responses analysis of a railway suspension bridge under longitudinal non-uniform excitations[J].Journal of Vibration and Shock,2014,33(22):157-163.)
    [9]洪浩.大跨度悬索桥抗震分析中几个问题的讨论[D].成都:西南交通大学,2013:10-33.(HONG Hao.Several discussions about seismic analysis of long-span suspension bridge[D].Chengdu:Southwest Jiaotong University,2013:10-33.)
    [10]张常明,田石柱,林元铮.桩土结构相互作用与自锚式悬索桥桥塔顺桥向破坏相关性研究[J].地震工程与工程振动,2015,35(4):139-144.(ZHANG Chang-ming,TIAN Shi-zhu,LIN Yuanzheng.Correlation study on pile-soil-structure interaction and failure pattern of self-anchored suspension bridge tower along bridge[J].Earthquake Engineering and Engineering Dynamics,2015,35(4):139-144.)
    [11]张超,巫生平.非一致激励对三塔自锚式悬索桥地震响应的影响[J].振动与冲击,2015,34(2):197-203.(ZHANG Chao,WU Sheng-ping.Effects of nonuniform excitation on seismic responses of a threetower self-anchored suspension bridge[J].Journal of Vibration and Shock,2015,34(2):197-203.)
    [12]聂利英,陈佳彬,刘群,等.基于IDA方法的悬索桥地震破坏机理分析中地震输入合理选择[J].土木工程学报,2015,48(6):64-72.(NIE Li-ying,CHEN Jia-bin,LIU Qun,et al.Reasonable selection of earthquake inputs in seismic damage analysis of suspension bridges based on IDA method[J].China Civil Engineering Journal,2015,48(6):64-72.)