某悬链线钢筋混凝土箱形拱桥的结构检测、评估与加固设计研究  

Structural Inspection,Evaluation,and Reinforcement Design of a Suspension Reinforced Concrete Box Arch Bridge

作　　者：纪常永 JI Chang-yong(China Railway Third Bureau Group Second Engineering Co.Ltd.,Shijiazhuang050031,China)

机构地区：[1]中铁三局集团第二工程有限公司,石家庄050031

出　　处：《工程建设与设计》2024年第13期101-103,共3页Construction & Design for Engineering

摘　　要：针对某悬链线钢筋混凝土箱形拱桥随着时间的增加,病害不断恶化的问题,论文对该桥进行了深入的桥梁外观结构检测及箱形拱桥病害状况评估。根据检测的结构受力特点和评估的结果,利用增大截面法对桥梁进行了加固设计,同时利用有限元软件进行了仿真分析。仿真结果表明,加固后的拱桥残余应变均小于20%,满足桥梁的承载力要求。In response to the problem that the disease of a certain suspension reinforced concrete box arch bridge continues to worsen over time,in-depth inspection of the bridge’s exterior structure and evaluation of the disease status of the box arch bridge were conducted.Based on the tested structural stress characteristics and evaluation results,the reinforcement design of the bridge was carried out by using the enlarged section method,and simulation analysis was conducted by using finite element software.The simulation results show that the reinforced arch bridge has residual strain of less than 20%,satisfying the load-bearing capacity requirements of the bridge.

关 键 词：钢筋混凝土箱形拱桥 加固设计 增大截面法 桥梁检测 病害状况评估 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]