独塔空间缆索自锚式悬索桥动力特性研究
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摘要
为了研究独塔空间缆索自锚式悬索桥动力特性,以青岛海湾大桥大沽河航道桥[跨径(80+l90+260+80)m的空间缆索自锚式悬索桥]为背景,利用MIDAS Civil 2006有限元分析软件建立全桥三维模型,计算出其前10阶自振特性。通过对其动力特性进行分析发现,该自锚式悬索桥除了具有悬索桥的振动特性之外,还有斜拉桥的振动特性;自锚式悬索桥的整体刚度相比地锚式悬索桥有所降低,因而其固有周期较长。
To study the dymamic characteristics of single-tower self-anchored suspension bridges with spatial cables,the Dagu River Shipping Channel Bridge(a self-anchored suspension bridge with spatial cables and with span arrangement(80+190+260+80) m) of Qingdao Bay Bridge was cited as an example,the finite element analysis software MIDAS Civil 2006 was used to establish the three-dimensional model for the whole bridge and the 10 orders of the natural vibration characteristcs of the bridge were caculated.The anlaysis of the dynamic characteristics reveals that in addition to the vibration characteristics of suspension bridges,the self-anchored suspension bridge also has the vibration characteristics of cable-stayed bridges,the global siffness of the bridge decreases to some extent as compared to that of a gound-anchored suspension bridge and the natural period of vibration of the bridge therefore becomes rather long.
To study the dymamic characteristics of single-tower self-anchored suspension bridges with spatial cables,the Dagu River Shipping Channel Bridge(a self-anchored suspension bridge with spatial cables and with span arrangement(80+190+260+80) m) of Qingdao Bay Bridge was cited as an example,the finite element analysis software MIDAS Civil 2006 was used to establish the three-dimensional model for the whole bridge and the 10 orders of the natural vibration characteristcs of the bridge were caculated.The anlaysis of the dynamic characteristics reveals that in addition to the vibration characteristics of suspension bridges,the self-anchored suspension bridge also has the vibration characteristics of cable-stayed bridges,the global siffness of the bridge decreases to some extent as compared to that of a gound-anchored suspension bridge and the natural period of vibration of the bridge therefore becomes rather long.
引文
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[5]张宏斌,孔宪京,张哲.自锚式悬索桥动力特性分析[J].公路交通科技,2004,21(7):66-69.(ZHANG Hong-bin,KONG Xian-jing,ZHANG Zhe.Analy-sis of Dynamic Performance of Self-Anchored SuspensionBridge[J].Journal of Highway and Transportation Researchand Development,2004,21(7):66-69.in Chinese)
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[7]邓志荣,李传习.江西九江长江公路斜拉桥动力特性分析[J].公路与汽运,2010,(3):118-121.(DENG Zhi-rong,LI Chuan-xi.Dynamic Characteristics Anal-ysis of Jiujiang Changjiang River Highway Cable-Stayed Bridgein Jiangxi[J].Highways&Automotive Applications,2010,(3):118-121.in Chinese)
[8]赵卓,张哲,刘东旭.自锚式悬索桥主桥动力特性分析[J].世界地震工程,2006,22(3):84-88.(ZHAO Zhuo,ZHANG Zhe,LIU Dong-xu.Analysis of Dy-namic Performance of Main Bridge of Self-Anchored Suspen-sion Bridge[J].World Earthquake Engineering,2006,22(3):84-88.in Chinese)
[2]Ochsendorf J A,Billington D P.Self-Anchored SuspensionBridge[J].Engineering Structures,2002,(24):1 547-1 559.
[3]张启伟,冯敏祎.自锚式混凝土悬索桥的动力分析[J].同济大学学报(自然科学版),2004,(12):1 562-1 566.(ZHANG Qi-wei,FENG Min-yi.Dynamic Analysis of Self-Anchored Concrete Suspension Bridge[J].Journal of TongjiUniversity(Natural Science),2004,(12):1 562-1 566.inChinese)
[4]丰硕,项贻强,谢旭,等.自锚式悬索桥动力特性及结构参数影响规律研究[J].世界桥梁,2004,(4):50-53.(FENG Shuo,XIANG Yi-qiang,XIE Xu,et al.Study of Dy-namic Behavior and Influences Induced by Structural ParameterVariations of Self-Anchored Suspension Bridge[J].WorldBridges,2004,(4):50-53.in Chinese)
[5]张宏斌,孔宪京,张哲.自锚式悬索桥动力特性分析[J].公路交通科技,2004,21(7):66-69.(ZHANG Hong-bin,KONG Xian-jing,ZHANG Zhe.Analy-sis of Dynamic Performance of Self-Anchored SuspensionBridge[J].Journal of Highway and Transportation Researchand Development,2004,21(7):66-69.in Chinese)
[6]刘春诚.混凝土自锚式悬索桥三维地震反应研究(博士学位论文)[D].大连:大连理工大学,2004.(LIU Chun-Cheng.Three-Dimensional Seismic ResponsesStudy of Concrete Self-Anchored Suspension Bridges(Doctor-ate Dissertation)[D].Dalin:Dalian University of Technolo-gy,2004.in Chinese)
[7]邓志荣,李传习.江西九江长江公路斜拉桥动力特性分析[J].公路与汽运,2010,(3):118-121.(DENG Zhi-rong,LI Chuan-xi.Dynamic Characteristics Anal-ysis of Jiujiang Changjiang River Highway Cable-Stayed Bridgein Jiangxi[J].Highways&Automotive Applications,2010,(3):118-121.in Chinese)
[8]赵卓,张哲,刘东旭.自锚式悬索桥主桥动力特性分析[J].世界地震工程,2006,22(3):84-88.(ZHAO Zhuo,ZHANG Zhe,LIU Dong-xu.Analysis of Dy-namic Performance of Main Bridge of Self-Anchored Suspen-sion Bridge[J].World Earthquake Engineering,2006,22(3):84-88.in Chinese)
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