| 汶川大地震绵竹市回澜立交桥震害调查 |
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| 引用本文： | 孙治国,王东升,郭迅,孟庆利,于德海,李晓莉.汶川大地震绵竹市回澜立交桥震害调查[J].地震工程与工程振动,2009,29(4). |
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| 作者姓名： | 孙治国 王东升 郭迅 孟庆利 于德海 李晓莉 |
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| 作者单位： | 1. 大连海事大学,道路与桥梁工程研究所,辽宁,大连,116026
2. 中国地震局,工程力学研究所,黑龙江,哈尔滨,150080 |
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| 基金项目： | 国家自然科学基金项目，地震行业科技专项项目，中央级公益性研究所基本科研业务费专项，中国地震局工程力学研究所开放试验室基金 |
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| 摘 要： | 绵竹市回澜立交桥跨越绵竹货运火车站,包括主桥及4个平面为圆形的曲线匝道桥,匝道桥为连续箱梁结构.5.12汶川大地震中,回澜立交桥遭到严重破坏,通过对震害的现场调查及分析发现,圆形匝道桥破坏严重,每个匝道桥破坏集中于1-2个抗弯刚度较大的低矮桥墩并引起上部箱梁横向断裂,其余桥墩发生轻度或中度破坏,主要为桥墩混凝土保护层脱落、混凝土开裂及墩顶橡胶支座的滑移,且总体来看,匝道桥破坏沿切向更为明显.主桥破坏相对较轻,主要包括桥墩顶部的支座滑移及主桥与匝道桥间的碰撞破坏.
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| 关 键 词： | 汶川地震 回澜立交桥 曲线桥 震害调查 |
Damage investigation of Huilan Interchange in Mianzhu after Wenchuan earthquake |
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| SUN Zhiguo,WANG Dongsheng,GUO Xun,MENG Qingli,YU Dehai,LI Xiaoli.Damage investigation of Huilan Interchange in Mianzhu after Wenchuan earthquake[J].Earthquake Engineering and Engineering Vibration,2009,29(4). |
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| Authors: | SUN Zhiguo WANG Dongsheng GUO Xun MENG Qingli YU Dehai LI Xiaoli |
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| Institution: | SUN Zhiguo1,WANG Dongsheng1,GUO Xun2,MENG Qingli2,YU Dehai1,LI Xiaoli1(1.Institute of Road , Bridge Engineering,Dalian Maritime University,Dalian 116026,China,2.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China) |
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| Abstract: | Huilan Interchange across Mianzhu Freight Station consists of main bridge and 4 circular ramp bridges with continuous box girders.The bridge was severely damaged during the Wenchuan earthquake on may 12th,2008.According to the field observation and analysis,it is concluded that the damage to ramp bridge was especially severe,1 or 2 short piers with large flexural stiffness suffered severe damage and the box girders ruptured as a result of the damage to the piers.The other piers of the ramp bridges suffered ... |
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| Keywords: | Wenchuan earthquake Huilan Interchange curved bridge post-earthquake observation |
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