摘要
为研究独塔斜拉桥的结构体系及其受力关系,按照直(斜)塔、有(无)边跨和有(无)背索3个条件将独塔斜拉桥进行分类,应用力系方法对各种体系的独塔斜拉桥进行受力分析,得到了各构件间的受力关系。研究表明:由于不平衡水平力的存在,无边跨独直塔斜拉桥和独斜塔斜拉桥桥墩高度宜设计为矮墩,有边跨独直塔斜拉桥的桥墩高度可根据边中跨比和桥墩受力综合确定。
To study the different structural system and their mechanics relationships of the single pylon cable-stayed bridge which are classified according to the three conditions of straight(inclined)pylon,with(no)side span or with(without)back stays,the force system method was used to analyze the stress of single tower cable-stayed bridge of various systems,and their relationships of each component were obtained.The results prove that due to the existence of unbalanced horizontal forces,the height designof the piers of the cable-stayed bridges with straight pylon and single-inclined pylon may be lower,while that of the cable-stayed bridges with side spans can be defined according to ratio of side span and midspan and pier force.
作者
王建国
吴正安
周水兴
WANG Jianguo;WU Zhengan;ZHOU Shuixing(Guizhou Zhongjiao Xinglu Expressway Development Co.,Ltd.,Guiyang 550000;Guizhou Zhongjiao Guiweng Expressway Development Co.,Ltd.,Guiyang 550000;Chongqing Jiaotong University,Chongqing 400074)
出处
《公路交通技术》
2020年第5期70-75,共6页
Technology of Highway and Transport
基金
贵州省交通运输厅科技项目(2016-123-048)。
关键词
独塔斜拉桥
直塔
斜塔
边跨
背索
结构体系
single pylon cable-stayed bridge
straight pylon
inclined pylon
side span
back stays
structural system
