某独柱墩曲线梁桥病害分析与改造方案设计  

Analysis of Defect of Curved Girder Bridge with Single-column Pier and Design of Reconstruction Scheme

作　　者：蔡亮 祝金伟 CAI Liang;ZHU Jinwei(Shanghai Urban Construction Design&Research InstituteCo.,Ltd.,Shanghai 200125,China)

机构地区：[1]上海市城市建设设计研究总院(集团)有限公司,上海200125

出　　处：《结构工程师》2025年第1期170-178,共9页Structural Engineers

摘　　要：结合工程实例,以匝道独柱墩箱梁横向偏移量为参数分析了偏移前后箱梁的受力状态,以箱梁横向转角为指标提出了梁桥病害程度初步判别方法,有助于快速掌握病害情况并采取措施。分析了纠偏顶升的可行性,提出了整体顶升方案和加固设计方法,为独柱墩梁桥的抗倾覆加固提供了有效的解决方案。现场监测结果表明,改造后的箱梁扭转和脱空的病害得到改善。本文提出的改造方案可为同类工程提供参考。Based on project example,the stress state of curved box girder bridge with single-column pier was analyzed with different lateral offset values.A preliminary discriminating method for the degree of bridge disease was proposed,the disease situation can be acquired quickly and measures can be taken.The whole bridge jack-up scheme was put forward by analyzing the feasibility of jacking to correct the deviation,reconstruction scheme was proposed to improve the anti-overturning ability,effective solution for the anti-overturning strengthening of single-column pier beam bridges was provided.Site monitoring data shows the defect of torsion and bearing separation of the girder was improved after reconstruction,which can be referenced for other similar engineering.

关 键 词：独柱墩 曲线梁 横向偏移 倾覆稳定 

分 类 号：TU997[建筑科学—市政工程]