摘要
以某3跨矮塔斜拉桥为工程背景,利用有限元分析软件Midas/Civil建立有限元模型,通过改变主塔塔根无索区高度来对比分析主塔塔高对主梁挠度、内力及应力的影响。综合考虑施工阶段和使用阶段主塔塔根无索区高度对主梁受力的影响,提出合理的主塔塔根无索区高度设计建议。
With some 3 - span low tower cable - stayed bridge as project background, this paper establishes a finite element model by means of finite element analysis software Midas/Civil to analyze influences of the height of main tower on deflection, internal force and stress of girders by changing the height of the no-cable area at the root of main tower. The paper comprehensively considers influences of the height of the no - cable area at the root of main tower during construction and application, and proposes reasonable recommendations for design of the height of the no -cable area at the root of main tower.
出处
《公路交通技术》
2015年第4期91-94,99,共5页
Technology of Highway and Transport
关键词
矮塔斜拉桥
塔高
无索区高度
主梁受力
low tower cable-stayed bridge
tower height
height of no-cable area
force on girder