某多跨预应力连续梁桥检测与现状评估

通过对某运营近20年的多跨预应力连续梁桥的外观检查、水下桩基承台检测、混凝土强度和碳化深度检测及结合所做的结构动载试验建立有限元模型进行动力分析,从桥梁结构外观现状、现有混凝土强度、结构动力特性等诸方面分析了该桥目前的实际工作状态,作了较为全面的性能评估并对出现的问题提出了合理的建议,为该桥的今后运营管理及检修提供参考。

Inspection and Status Assessment of Multi-span Prestressed Girder Bridge

Through the inspection on one nearly-20-year operating multi-span prestressed girder bridge visual,underwater pile foundation inspection,concrete strength and carbonation depth of the structure detection and combined load test,the dynamic finite element model analysis was established;from the appearance of the bridge structure,status,the existing strength of concrete,and other aspects of dynamic characteristics of the actual work of the current state of the bridge,a more comprehensive performance evaluation of the problems was made and reasonable proposals for the bridge operational management and maintenance was put forward,which could provide for future reference.