简支T型梁桥典型病害加固设计分析

Simply-supported T-beam of the typical disease for reinforcement design

针对某简支T梁运营多年后桥梁跨中出现结构受力性裂缝和主梁钢筋锈蚀等严重影响桥梁的承载能力与耐久性的典型病害,根据荷载试验评定结果,设计了具有针对性的维修加固方案.加固后的检测结论表明,承载能力能够满足桥梁设计荷载.该加固方案具有较好的工程实用性,可为同类工程借鉴.

The typical diseases for a simply-supported T-beam bridge during long-term operation, such as force cracks at the midspan and the force steel corrosion, seriously affect the structural carrying capacity and durabili- ty. According to the load test results, a targeted strengthening method is adopted for the bridge and the canying capacity can meet the need of the design load of the bridge. The maintenance method can be a reference for the same engineering.