增设支撑加固坦拱桥合理支点优选技术  

Technical Discussion on Reasonable Fulcrum Optimization of Setting Support as Flat Arch Bridge Reinforcement

作　　者：武电坤[1] 周建庭[1] 祁永利[1] 莫喜晶[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）》2009年第2期187-189,254,共4页Journal of Chongqing Jiaotong University(Natural Science)

基　　金：国家自然科学基金(50608072);重庆市杰出青年基金(CSTC;2008BA6038)

摘　　要：基于影响线确定截面内力最不利荷载位置的原理,分析了增设Y型支撑加固坦拱桥支点优选的总体与特殊控制原则;并结合数值分析中对分迭代的数学思想,提出一种快捷、方便地选择合理支撑点的方法。为多点支撑加固坦拱桥、及梁桥等其它桥型结构的应用提供首要理论基础及技术参考。Based on the theory that the influence line determines the location of the most unfavorable load of section internal force, the general and special control principles of fulcrum optimization of setting Y support as flat arch bridge reinforcement are analyzed. Combining with mathematical thought of bisection iterative method among numerical analysis, a new way to choose reasonable supporting point rapidly and conveniently is put forward, which provides primary theoretical basis and technical reference for the application of multi-point supporting to strengthening flat arch bridge, girder bridge and other bridges.

关 键 词：影响线 对分迭代 支点优选 控制原则 方法 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]