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列举了一座南疆线预应力空心板桥建成不到一年遭遇里氏5.8级地震后,必须对桥梁地震后损坏程度和结构承载能力和通行能力做出鉴定。通过对桥梁一般检查和详细、特殊检查,静载、动载试验,桥梁承载能力检算和抗震能力分析,得出桥梁地震后的整体能力仍满足原设计要求,但此桥为三类桥,处于较差状态的鉴定结论。考虑结构的运营安全和耐久性要求,对受损桥梁及时进行了整治、补强、加固,取得了较好的效果。
After enumerating an earthquake of 5.8 on the Richter scale, the Nankiang Prestressed Hollow Slab Bridge was built less than a year ago, it is necessary to make an appraisal on the degree of damage and the carrying capacity and capacity of the structure after the earthquake. Through the general inspection, detailed inspection, special inspection, static load and dynamic load test, bridge load capacity test and seismic capacity analysis, it is concluded that the overall capacity of the bridge after earthquake still meets the original design requirements. However, In the poor state of the appraisal conclusion. Considering the operational safety and durability requirements of the structure, timely rectification, reinforcement and reinforcement of damaged bridges have been achieved and good results have been achieved.