汶川地震中广元市桥梁结构地震破坏情况调查与分析
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摘要
以广元市内250座桥梁为样本总体,并按桥梁类型及建造年代的不同将样本进行分类,通过对这些桥梁的震后调查资料进行统计,详细阐述了各类型桥梁的破坏方式及其震害现象;对比研究了不同类型桥梁在各种地震损伤等级下的损伤比例,进而得到各类型桥梁抗震性能的优劣;通过对不同年代建造桥梁破坏情况的比较,认识到桥梁工程抗震设计规范的必要性以及提高桥梁工程抗震理论水平的重要意义,最后探讨了桥梁破坏的原因。
Total 250 bridges in Guangyuan were investigated after Wenchuan Earthquake and these bridges were classified according to its type and construction time.Based on the investigation,the common damage phenomena of different type bridges are derived in detail;and the seismic performances of different type bridges are compared based on the damage proportion of the bridge under different damage conditions.It is concluded from the comparison among seismic performances of bridges in different time that,to promote the general code for bridge design is necessary and important.The reasons causing the damage of these bridges are discussed finally.
Total 250 bridges in Guangyuan were investigated after Wenchuan Earthquake and these bridges were classified according to its type and construction time.Based on the investigation,the common damage phenomena of different type bridges are derived in detail;and the seismic performances of different type bridges are compared based on the damage proportion of the bridge under different damage conditions.It is concluded from the comparison among seismic performances of bridges in different time that,to promote the general code for bridge design is necessary and important.The reasons causing the damage of these bridges are discussed finally.
引文
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[3]孙利民,范立础.阪神地震后日本桥梁抗震设计规范的改订[J].同济大学学报,2001,29(1):60～64Sun Li-min,Fan Li-chu.Revisions of Seismic Design Codes on Bridge in Japan after Kobe Earthquake[J].Journal of Tongji University,2001,29(1):60～64(in Chinese)
[4]李宏男,肖诗云,霍林生.汶川地震震害调查与启示[J].建筑结构学报,2008,29(4):10～19Li Hong-nan,Xiao Shi-yun,Huo Lin-sheng.Damage Investigation and Analysis of Engineering Structures in the Wenchuan Earthquake[J].Journal of Building Structures,2008,29(4):10～19(in Chinese)
[5]毛海涛,刘秀英.桥梁检测与评价系统概述[J].辽宁省交通高等专科学校学报,2004,6(4):9～10Mao Hai-tao,Liu Xiu-ying.General Accounts of Bridge Measurement and Evaluation System[J].Journal of Liaoning Provincial College of Communications,2004,6(4):9～10(in Chinese)
[6]王锋君.参考国外设计规范试论我国公路桥梁设计荷载[J].公路,2001,5:5～9Wang Feng-jun.Discussion on Design Loading for Highway Bridge Considering of Foreign Design Code[J].Highway,2001,5:5～9(in Chinese)
[7]王向阳,季少波,石明强.中美桥梁设计规范的内力计算比较研究[J].世界桥梁,2007,4:78～80Wang Xiang-yang,Ji Shao-bo,Shi Ming-qiang.Comparison and Study of Internal Force Calculations in Chinese and American Bridge Design Specifications[J].World Bridges,2007,4:78～80(in Chinese)
[8]范立础,王君杰.桥梁抗震设计规范的现状与发展趋势[J].地震工程与工程振动,2001,21(2):70～77Fan Li-chu,Wang Jun-jie.Design Code for Earthquake-resistance of Bridges:Current Situation and Trend[J].Earthquake Engineering and Engineering Vibration,2001,21(2):70～77(in Chinese)
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