摘要
对5.12汶川大地震四川重灾区国(省)干线公路1657座桥梁震害的调查检测结果加以归纳,总结出7种公路桥梁的宏观震害;归纳了梁式桥及拱桥的几种典型震害——移位、落梁、桥墩剪断、压溃和开裂、桥台墙体开裂、桥台肋板和背墙开裂、桥台填料垮塌、拱圈开裂、拱上结构开裂等,并对其进行了初步分析。根据震害,提出了桥位及桥型选择应注意的有关因素,以及针对梁体移位、桥墩破坏等震害的相关抗震对策。
The results of the investigation on 1657 bridges damaged in Wenchuan earthquake in Sichuan Province were summarized; and seven types of macro-earthquake damages of highways and bridges were presented. For beam bridges and arch bridge, the main damages were girder displacement, girder falling, pier damage by shear force, pier and girder crushing and cracking, bridge abutment wall and ribbed slab cracking, bridge abutment filler sloughing, arch ring and spandrel cracking, etc.. All of the damage reasons of the bridges were analyzed preliminary; and the influential factors for selections of bridge sites and types were also put forward. The countermeasures were presented at last for girder displacement and pier damage.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2009年第7期1377-1387,共11页
Chinese Journal of Rock Mechanics and Engineering
基金
交通部西部交通建设科技项目(200831800098)
关键词
桥梁工程
汶川大地震
次生地质灾害
桥梁震害
抗震对策
bridge engineering
Wenchuan earthquake
secondary geological disaster
bridge earthquake damage
aseismic countermeasures
