组合加固法在钢筋混凝土T型梁桥中的应用  

Application of combination reinforcement method in reinforced concrete T-beam bridge

作　　者：肖勇刚 熊晨 XIAO Yong-gang;XIONG Chen(School of Civil Engineering,Changsha University of Science&Technology,Changsha 410114,China)

机构地区：[1]长沙理工大学土木工程学院,湖南长沙410114

出　　处：《交通科学与工程》2021年第2期36-40,共5页Journal of Transport Science and Engineering

摘　　要：针对服役期T型梁桥的T梁抗弯承载能力的不足,提出了采用增大截面和体外预应力相结合的一种新的组合加固方法。应用有限元方法进行仿真分析,该组合加固方法与传统方法相比,安全系数更高,增强了桥梁横向联系,解决了早期T型梁桥采用体外预应力加固时在承载能力极限状态下可能出现受压区高度偏大的问题。To solve the problem of insufficient flexural bearing capacity of T-beam of T-beam bridge in service,a new combined reinforcement method combining enlarging section with external prestressing was proposed.The finite element method was used for simulation analysis.Compared with the traditional method,the composite reinforcement method has satisfactory safety reserve coefficient,and the transverse connection of bridges is strengthened.It solves the problem that the high-pressure area may be too large when the T-beam bridge is strengthened by external prestressing.

关 键 词：桥梁加固 粘贴钢板加固法 体外预应力加固法 组合梁加固 

分 类 号：U448.25[建筑科学—桥梁与隧道工程]