汶川地震高烈度区桥梁震害机理分析与研究

5．12汶川大地震灾区桥梁遭受了巨大的破坏与损伤。根据中国地震局发布的汶川8级地震烈度分布图，着重考察了震中8度以上高烈度地区桥梁的震害。通过搜集资料，分别对以高原桥、百花桥、庙子坪大桥、小鱼洞桥为代表的简支梁桥、连续梁桥、连续刚构桥、拱桥地震破坏机理进行了理论分析，探究了震害产生的主要原因，并对几类典型震害的防治从设计选型和施工工艺的角度提出了对策。

Analysis and Research of Bridge Earthquake Damage Mechanism in Wenchuan Higher Intensity Area

The bridges in 5.12 Wenchuan earthquake area was damaged seriously. According to the intensity map of Wenchuan earthquake with magnitude 8 published by China earthquake administration, the damaged bridge in the epicenter area of larger than eight intensity area was reviewed. Based on the collected data, the earthquake damage mechanics of Gaoyuan bridge, Baihua bridge, Miaoziping bridge, Xiaoyudong bridge which is deputized the simple beam bridge, continuous beam bridge, continuous rigid frame bridge and arch bridge was theoretical analyzed, and researched the reason of earthquake damage, proposed the countermeasures from design model selection and construction technique for the typical earthquake damage, hope to provide reference for the future bridge in mountainous area with higher intensity.