增大截面法加固石拱桥最小加固层厚度  

Minimum Thickness of Reinforcing Layer of Stone Arch Bridge Strengthened by Section Enlargement Method

作　　者：刘庆阳[1] 周建庭[1] 王玲[1] 祝小龙[1] 

机构地区：[1]重庆交通大学,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2008年第1期20-23,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：湖南省交通科学研究院"石拱桥加固改造技术研究"项目(2005-08)

摘　　要：以容许应力理论为基础,考虑利用增大截面法加固主拱圈前后的受力特点,并以保证加固层与原结构变形协调为前提,在加固前建立一个关于加固层厚度的截面破坏方程,通过合理的解方程来确立加固层最小厚度,从而为快速确定最小加固层厚度提供合理的理论保证,并减少试算和验算的工作量,对石拱桥加固理论化有着一定的推动作用。Based on the allowable stress theory, considering the stress characteristics of reinforcing layer before and after reinforcement, and guaranteeing the reinforcing layer and the original structure distortion coordination as a premise, a equation about reinforcing layer thickness section destruction was established before reinforcement to determine the reasonable thickness of reinforcing layer. It provides the theory basis to guarantee the reinforcement structure works, reduces the trial calculation and the checking calculation work load, and promotes the theory development of stone arch bridge structure reinforcement.

关 键 词：容许应力理论 加固层 破坏方程 增大截面法 变形协调 

分 类 号：U448.32[建筑科学—桥梁与隧道工程]