钢筋混凝土T梁桥性能提升设计与实践  

Design and Practice of Performance Improvement for Reinforced Concrete T-Beam Bridges

作　　者：林峰 童浩 华春丽[1] 周宇 Lin Feng;Tong Hao;Hua Chunli;Zhou Yu(The Expressway Operation and Administration Center of Jiangsu Province,Nanjing,China)

机构地区：[1]江苏省高速公路经营管理中心,江苏南京

出　　处：《科学技术创新》2024年第24期140-143,共4页Scientific and Technological Innovation

基　　金：2022年度江苏交控科研项目——重载交通下装配式T梁桥预防性养护关键技术研究。

摘　　要：钢筋混凝土T梁桥作为一种成熟的桥型大量应用于我国公路建设中,经过多年运营,73版钢筋混凝土T梁出现了裂缝、横向联系性能减弱等问题,且旧护栏不具备防撞能力,文章分析了病害产生的原因,并通过增设钢悬臂和钢护栏、横向联系铰接改刚接、粘贴钢板和槽钢等措施提升桥梁护栏防撞性能、横向整体性能、主梁强度和刚度,实施效果良好。As a mature bridge type,reinforced concrete T-beam bridges are widely used in highway construction in China.After years of operation,the 73 version of reinforced concrete T-beam bridges have defects such as cracks and weakened lateral connections and lack of anti-collision capability in handrails.This article will analyze the causes of these defects.And it proposes to improve the anti-collision capability,overall transverse performance and the strength and stiffness of main beams by adding steel cantilevers and steel guardrails,replacing horizontal hinged connections with rigid connections and pasting steel plates and channel steel,which shows a good performance in practice.

关 键 词：T梁桥 钢悬臂 防撞性能 整体性能 强度 刚度 

分 类 号：U442[建筑科学—桥梁与隧道工程]