复合主拱圈加固石拱桥力学性态分析  

Mechanical Behavior Analysis on Stone Arch Bridge Strengthened by Composite Main Arch Circle Method

作　　者：周建庭[1] 黎小刚[1] 屈建强[1] 韩雪[1] 徐正强[1] 

机构地区：[1]重庆交通大学土木建筑学院,重庆400074

出　　处：《重庆交通大学学报（自然科学版）》2010年第6期849-851,903,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：重庆市重大科技攻关资助项目(CSTC2009AB6149);重庆市杰出青年基金项目(CSTC2008BA6038)

摘　　要：从复合主拱圈加固石拱桥加固前后力学性态的角度,结合具体的实际加固工程,对加固前后主拱圈截面内力进行计算,阐述主拱圈截面强度和整体"强度-稳定"性提高率,验算新旧拱圈结合面抗剪承载力和新增结构对原结构的影响,提出一项基于承载力提高率的加固增强总体效果评价指标,以期对石拱桥加固设计方案比选、加固质量评定有一定的积极指导作用。Based on mechanical behavior of strengthened composite main arch and practical strengthening projects,internal force of main arch bridge before and after reinforcement was calculated.Increase rate of the main arch cross-section strength and the overall ＂strength-stability＂ was expounded.Shear capacity of old and new arch ring combination surface and the impact of new structure on the original structure were checked.As a result,an increase overall effect reinforcing evaluation index based on increase rate of bearing capacity was proposed,which played a positive role in design options and quality assessment of arch bridge reinforcement.

关 键 词：复合主拱圈 石拱桥 力学性态 承载力提高率 

分 类 号：U442.53[建筑科学—桥梁与隧道工程]