在役大跨度预应力混凝土悬臂拼装桥梁安全性评估

摘要

以某运营多年的大跨度预应力混凝土悬臂拼装桥梁为工程实例，在介绍悬臂拼装桥梁设计方法的基础上，进行基于现状的结构承载力分析，通过桥梁的安全评估，真正了解桥梁的实际状态、实际承载力和使用寿命等，可以鉴定和发现桥梁存在的危险隐患，并为提出恰当的维修、加固技术措施提供依据，以期为相类似桥梁安全性评估提供工程经验借鉴和参考。%This paper, taking an assembled cantilever lare-span prestressed concrete bridge as a case, makes some structural analysis of the bearing capacity of the status quo based on the introduction of the design method of such bridges, aiming to understand the state of the bridge and the actual carrying capacity and service life by safety assess-ment. As the result, the potential risks could be identified and repair and strengthening measures are put forwards, which provides some references for the safety assessmenof similar bridges.