无吊杆人行悬索桥设计研究
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摘要
以昆明市某(12.2+49.1+12.2)m人行桥为工程背景,介绍该单跨无吊杆人行悬索桥的结构体系,相关设计参数和动、静力计算分析,并探讨恒载、活载和温度荷载作用下主缆、加劲梁和桥塔的受力特点;分析了主梁两端不同的边界条件对结构振动使用性能的影响和抗震性能,并对人群同步荷载作用下桥梁的响应时程进行计算。计算结果表明:将主梁两端固结能有效提高结构自振频率,从而满足人行振动使用性能要求。
Taking a(12.2 plus 49.1 plus 12.2) m pedestrian bridge in Kunming as the engineering background,the structure system,the related parameters and the static and dynamic analysis were introduzed.Meanwhile,the mechanical characteristics of main cable,stiffening girder and bridge tower were evaluated under the condition of constant load,live load as well as temperature load.Then the bridge's natural vibration characteristics and the earthquake resistant behavior were compared under different boundary conditions of the stiffening girder,and the vertical acceleration was calculated by time-history analysis under pedestrian load.The results show that fixing the two ends of the stiffening girder can improve the natural frequency efficiently so as to meet the requirements of pedestrian bridge.
引文
[1]陈峰.混凝土自锚式人行悬索桥结构静动力行为分析研究[D].广东:广东工业大学,2008.CHEN Feng.The Structure Static and Dynamic Behavior Analysis of the Concrete Self-anchored Suspension Footbridge[D].Guangdong:Guangdong University of technology,2008.
    [2]周玉龙.山区人行悬索桥初步设计研究[D].杭州:浙江大学,2008.ZHOU Yulong.Research on Predesign of Pedestrian Suspension Bridge in Mountain District[D].Hangzhou:Zhe Jiang University,2008.
    [3]李文武.星海湾人行桥主缆线性确定及斜塔受力分析[D].大连:大连理工大学,2006.LI Wenwu.The establishment of main cable curve and inclined tower force analysis for xinghai-bay footbridge[D].Dalian:Dalian University of technology,2006.
    [4]JGJ xxx─2002,公路悬索桥设计规范(报批稿)[S].JGJ xxx─2002,Design specification for highway suspension bridge[S].
    [5]Piment el R L,Pavic A,Waldron P.Evaluation of design requirements for footbridges excited by vertical forces from walking[J].Canadian Journal of Civil Engineering,2001,28:769-777.
    [6]Dallard P,Fitzpat rick A J,Flint A,et al.The london millennium footbridge[J].The Structural Engineering,2001,79(22):17-35.
    [7]Bachmann H.Vibration upgrading of gymnasia,dance halls and footbridges[J].Structural Engineering International,1992,(2):118-124.
    [8]CJJ 69─95,城市人行天桥与人行地道设计规范[S].CJJ 69─95,Technical Specifications of urban pedestrian overcrossing and underpass[S].
    [9]孙利民,闫兴非.人行人行激励振动设计方法[J].同济大学学报:自然科学版,2004,32(8):996-999.SUN Liming,YAN Xingfei.Human Walking Induced Footbridge Vibration and Its Serviceceability Design[J].Journal of Tongji University:Natural Science,2004,32(8):996-999.
    [10]陈政清,刘光栋.人行桥的人致振动理论与动力设计[J].工程力学,2009,26增刊Ⅱ:148-159.CHEN Zhengqing,LIU Guangdong.Pedestrian-Induced Vibration Theory and Dynamic Design of Footbridges[J].Engineering Mechanics,2009,Vol.26Sup.II:148-159.
    [11]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,(05):25-30.LIN Lixia,DING Nanhong,ZHANG Yuanhai,et al.Seismic response analysis of double chains suspension bridge considering modified damping value[J].Journal of Railway Science and Engineering,2012,(05):25-30.
    [12]CJJ 166─2011城市桥梁抗震设计规范[S].CJJ 166─2011,Code for seismic design of urban bridges.[S].
    [13]宋旭明,戴公连.自锚式悬索桥地震响应及减震控制分析[J].中南大学学报:自然科学版,2009,40(4):1079-1084.SONG Xuming,DAI Gonglian.Seismic response analysis and control of self-anchored suspension bridge[J].Journal of Central South University:Science and Technology,2009,40(4):1079-1084.

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