某城市高架桥梁加固方案比选分析  

Comparison analysis on reinforcement scheme of an urban viaduct bridge

作　　者：谢金成 于威 刘彬 万淑敏 XIE Jincheng;YU Wei;LIU Bin;WAN Shumin(Qingdao Municipal Engineering Design and Research Institute Co.,Ltd.,Qingdao 266061,Shandong,China)

机构地区：[1]青岛市政工程设计研究院有限责任公司,山东青岛266061

出　　处：《工程建设》2022年第9期74-78,共5页Engineering Construction

摘　　要：随着使用年限的增加,桥梁在运营周期内可能会出现混凝土开裂剥落、钢筋锈蚀、结构性裂缝及预应力损失严重等病害,严重影响桥梁的安全可靠性。本文以某城市高架桥为工程背景,对比分析了粘贴碳板法、预应力碳板法、体外预应力法3种加固方案在施工便捷性、加固性质、对原结构影响、加固效果、耐久性等方面的优缺点,并根据工程实际及计算结果确定了预应力碳板法对现有桥梁结构破坏小,可以提高桥梁的安全性及耐久性,为最优方案。本文结果对类似工程的加固设计及施工具有一定的指导意义。With the increase of service life, bridges may suffer from concrete cracking and spalling, reinforcement corrosion, structural cracks and serious loss of prestress during the operation cycle, which seriously affect the safety and reliability of bridges.In this paper a city viaduct bridge is taken as the engineering background, the advantages and disadvantages of the three reinforcement schemes of pasted carbon plate method, prestressed carbon plate method and in vitro prestress method in terms of construction convenience, reinforcement properties, impact on the original structure, reinforcement effect and durability are compared and analyzed.According to the actual project and the calculation results, it is determined that it is the optimal solution though the prestressed carbon plate method has little damage to the existing bridge structure, which can improve the safety and durability of bridges.The results have certain guiding significance for the reinforcement design and construction of similar projects.

关 键 词：城市高架 桥梁加固 预应力碳板法 方案比选 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]