摘要
结合既有工程经验,基于无应力状态理论,对重庆郭家沱长江大桥主梁安装提出多种比较方案。通过对施工阶段弦杆、吊杆的内力及应力规律的比较,以及对临时铰合龙措施的探讨,研究各方案的优劣性,并结合技术难度、施工周期、施工成本等因素,对该桥施工方案提出合理化建议。
In this paper,based on the experience of the existing engineering and the stress-free state theory,some comparison scheme was put forward for the installation of the main girder of Chongqing Guojiatuo Yangtze River Bridge. Through comparing the law of internal force and stress of the chord and boom in the construction stage and discussing the measures of temporary hinge jointing,this paper discusses the advantages and disadvantages of various schemes,and puts forward some rational suggestions on the construction scheme of the bridge considering the technical difficulty,construction period and construction cost.
出处
《公路交通技术》
2016年第6期47-51,共5页
Technology of Highway and Transport
基金
交通运输部建设科技项目(2013318223380)
关键词
无应力状态
钢桁梁悬索桥
施工方案
受力特点
stress-free state
steel truss suspension bridge
construction scheme
stress characteristics
