预应力斜腿刚架拱桥的设计与分析  

Design and Analysis of Prestressed Inclined Leg Rigid-framed Arch Bridge

作　　者：刘遮 杨明福[1] 屠科彪 宁晓骏[1] 

机构地区：[1]昆明理工大学土木工程学院,昆明650500

出　　处：《武汉理工大学学报（交通科学与工程版）》2014年第4期929-932,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国家自然科学基金项目(批准号:51068012);云南省自然科学基金项目(批准号:2009CD034)资助

摘　　要：普通坦拱桥的拱脚处水平推力很大,需要采用多种工程措施进行处理.而采用预应力斜腿刚架拱的坦拱桥就可以有效的解决这一问题.通过建立有无斜腿、斜腿中有无预应力束、不同形式的拱上立柱等模型,并且考虑桩-土作用的影响进行结构分析.研究表明预应力斜腿刚架拱可以有效的减小水平推力、水平位移,而且还可以提高拱桥的整体刚度.The ordinary flat arch bridge boasts a great horizontal thrust at the arch springing,which requires various engineering measures to deal with.The application of prestressed inclined leg rigidframed arch can solve this problem efficiently.By constructing various models with or without slantleg,slant-leg with or without prestressing tendon,and different spandrel column models,and then making structural analysis based on the consideration of pile-soil effect.This study shows that the prestressed inclined leg rigid-framed arch can not only efficiently reduce the horizontal thrust、horizontal displacement,but also enhance the integral rigidity of the arch bridge.

关 键 词：坦拱桥 预应力斜腿刚架拱 水平推力 水平位移 刚度 

分 类 号：U448.22[建筑科学—桥梁与隧道工程]