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[1]刘健新,赵国辉.“5·12”汶川地震典型桥梁震害分析[J].建筑科学与工程学报,2009,26(02):92-97.
　LIU Jian-xin,ZHAO Guo-hui.Typical Bridge Damage Analysis in “5·12” Wenchuan Earthquake[J].Journal of Architecture and Civil Engineering,2009,26(02):92-97.
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“5·12”汶川地震典型桥梁震害分析(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
26卷
期数:
2009年02期
页码:
92-97
栏目:
出版日期:
2009-06-20

文章信息/Info

Title:
Typical Bridge Damage Analysis in “5·12” Wenchuan Earthquake
作者:
刘健新，赵国辉
长安大学桥梁与隧道陕西省重点实验室,陕西西安710064
Author(s):
LIU Jian-xin, ZHAO Guo-hui
Key Laboratory of Bridge and Tunnel of Shaanxi Province, Chang'an University, Xi'an 710064, Shaanxi, China
关键词:
桥梁工程;  “5·12”汶川地震;  桥梁震害;  震源机制;  抗震设防
Keywords:
bridge engineering;  “5·12” Wenchuan Earthquake;  bridge damage;  earthquake source mechanism;  seismic fortification
分类号:
U442.5
DOI:
-
文献标志码:
A
摘要:
针对“5·12”汶川地震中公路桥梁破坏严重,且破坏形式在映秀—北川断裂带南北两段出现了显著差异的情况,从震源机制、断裂带运动方式和桥梁结构本身特点等方面分析了产生这一差异的原因; 并在汶川地震典型的桥梁震害分析的基础上,对强震区梁桥和拱桥的抗震设防提出了一些建议。结果表明:在断裂带南段由于地震释放能量巨大,断层逆冲作用显著,桥梁结构在强大竖向和水平地震力的共同作用下出现了桥墩、拱圈断裂导致的结构垮塌等强度失效型破坏; 在断裂带北段断层右旋走滑作用显著而逆冲作用微弱,桥梁结构在剧烈的地面水平错动下出现了上部结构的落梁和双曲拱的垮塌等位移型破坏。
Abstract:
According to the highway bridges severely damaged in “5·12” Wenchuan Earthquake, there was significant difference in damage style between south and north part of the Yingxiu-Beichuan fault, Sichuan Province. The reason was analyzed from several aspects, such as earthquake source mechanism, movement style of the fault and characteristic of the bridge structure. Some suggestions in seismic fortification for girder bridges and arch bridges were given on the basis of the typical bridge damage analysis in “5·12” Wenchuan Earthquake of Sichuan Province. The results show that because of the huge energy and faults thrust in south part, structures sustain huge vertical and horizontal seismic forces at the same time, the damage style of the highway bridges is strength failure, such as collapse caused by rupture of piers or arch rib. While in the north part of the fault, because of the huge right lateral strike slip and the weak thrust, the damage style is displacement failure, such as collapse of the superstructures or the two-way curved arch bridges.

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备注/Memo

备注/Memo:
收稿日期:2009-01-10
基金项目:交通部规范编制项目(200202)
作者简介:刘健新(1942-),男,山西清徐人,教授,博士研究生导师,E-mail:ljx@gl.chd.edu.cn。
更新日期/Last Update: 2009-06-20