矮塔斜拉桥顶板纵向预应力不同张拉工序对预应力损失的影响分析  

Analysis of the Effect of Different Tensioning Procedures on Prestressing Loss of Longitudinal Prestressing in the Roof Slab of Short Tower Cable-stayed Bridges

作　　者：郑洪涛 ZHENG Hong-tao(Wuhan Institute of Technology,Wuhan 430073,China)

机构地区：[1]武汉工程大学,武汉430073

出　　处：《价值工程》2024年第12期91-93,共3页Value Engineering

摘　　要：本文以江汉运河特大桥为背景,对其顶板纵向预应力筋在不同张拉工序下预应力损失和应力变化情况进行分析,采用有限元软件对不同张拉工序进行模拟,得到不同张拉工序下预应力损失和全桥应力的影响,最后总结其最佳张拉工序,为类似桥梁施工提供参考。In this paper,taking the Jianghan Canal Bridge as the background,the prestress loss and stress change of the longitudinal prestressed tendon of the roof under different tensile processes are analyzed,and the finite element software is used to simulate different tensile processes,and the influence of prestress loss and whole bridge stress under different tensile processes is obtained,and finally the optimal tensile process is summarized to provide reference for similar bridge construction.

关 键 词：预应力张拉 顶板纵向预应力 预应力损失 应力 矮塔斜拉桥 

分 类 号：U448.27[建筑科学—桥梁与隧道工程]