大跨度箱梁桥体外预应力转向装置设计及分析  

Design and Analysis of Steering Device for External Prestressed Reinforcement of Large-span Box Bridge

作　　者：杜善朋 鬲鹏飞 DU Shan-peng;GE Peng-fei(Xi'an CCCC Taicheng Road and Bridge Technology Co.,Ltd.,Xi'an 710000,China;Shandong Province Communications Planning and Design Institute Group Co.,Ltd.,Ji'nan 250101,China)

机构地区：[1]西安中交泰成路桥科技有限公司,西安710000 [2]山东省交通规划设计院集团有限公司,济南250101

出　　处：《价值工程》2024年第24期93-95,共3页Value Engineering

摘　　要：随着我国经济的快速发展,交通量不断增长,大跨度连续梁结构性病害日益突出。本文以府保黄河二桥大跨度连续-刚构组合体系现浇箱梁桥为依托工程,该桥因腹板开裂、跨中下挠进行体外预应力加固,对其转向块进行设计及分析。该桥采用钢转向块代替传统的钢筋混凝土转向块,使得施工更加方便、工期明显缩短。With the rapid development of Chinese economy and the continuous growth of traffic volume,structural diseases of large-span continuous beam bridge are becoming increasingly prominent.This paper is based on Fu Bao Yellow River Second Bridge which is a continuous rigid frame composite system cast-in-situ box girder bridge as a supporting project.The bridge was externally prestressed and reinforced due to cracking in webs and mid span deflection,and its turning block was designed and analyzed.The bridge uses steel turning block instead of traditional reinforced concrete turning blocks,making construction more convenient and significantly shortening the construction period.

关 键 词：桥梁工程 体外预应力 钢转向块 加固 

分 类 号：U445.7[建筑科学—桥梁与隧道工程]