大跨斜拉桥运营期结构检测与评估

Inspection and Evaluation on Structure of Long-span Cable-stayed Bridge in Operation Period

湖北境内的某大跨斜拉桥具有墩高、跨大、沟深、施工条件艰难四个主要特点,为保障桥梁运营安全,对大桥进行定期检测与评估。通过对斜拉索索力、桥面线形、主梁应力及振动模态的检测,得出如下结论:该桥恒载、活载及温度荷载工况工作正常,桥梁整体刚度和整体动态特性较好。

A long-span cable-stayed bridge has four characteristics of high pier, long span, deep ditch and difficult construction conditions in the boundary of Hubei. In order to ensure the operation safety of the bridge, the bridge is required to periodically inspect and evaluate. According to the inspection of the stayed cable force, deck alignment, main beam stress and vibration mode, the conclusion shows that the working conditions of dead load, live load and temperature load of this bridge are normal, and the overall rigid and overall dynamic characteristics of the bridge are better.