连续梁桥的体外预应力索加固研究  

Research on External Prestressed Cable Reinforcement of Continuous Beam Bridges

作　　者：郭建东 GUO Jiandong(Sanmenxia Branch of Henan Transport Investment Group Co.,Ltd.,Sanmenxia 472000,Henan,China)

机构地区：[1]河南交通投资集团有限公司三门峡分公司,河南三门峡472000

出　　处：《工程技术研究》2024年第3期68-70,共3页Engineering and Technological Research

摘　　要：体外预应力索加固技术具有简便易行、成本稳定可控等优点,可大幅提升现存桥的结构承受能力和抗震性能,可用于对服役桥梁的加固补强处理。文章调查了某连续T梁桥的常见病害,在此基础上,提出了体外预应力索加固的具体方案,分析了加固施工中的关键技术,并详细描述了体外预应力加固效果评价方法。结果表明,加固后的桥梁强度和应力明显提高,且符合常规指标要求,可达到提高桥梁性能的预期目标。The external prestressed cable reinforcement technology has the advantages of simplicity,ease of operation,stable and controllable cost,and can greatly improve the structural load-bearing capacity and seismic performance of existing bridges.It can be used for the reinforcement and reinforcement of in-service bridges.On the basis of investigating the common diseases of a continuous T-beam bridge,a specific plan for external prestressed cable reinforcement is proposed,the key technologies in reinforcement construction are analyzed,and the evaluation method for the effect of external prestressed reinforcement is described in detail.The results show that the strength and stress of the reinforced bridge are significantly improved,and it meets the requirements of conventional indicators,which can achieve the expected goal of improving the performance of the bridge.

关 键 词：桥梁加固 体外预应力索加固 连续梁桥 主动加固 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]