摘要
为进一步推广波形钢腹板PC组合箱梁桥的应用范围,在实桥中采用了一种新型异步悬臂浇注施工方法,提升波形钢腹板PC组合箱梁桥的施工水平,以体现该桥型的经济效益。以工程实桥为研究对象,对比分析了传统挂篮施工法与异步浇注法的工艺流程及经济性指标。基于大型有限元程序ANSYS,建立了该桥的精细化有限元计算模型,对施工全过程结构关键截面的受力进行了详细分析,并与实时监测应力进行了对比研究。研究表明,异步悬臂浇注法工艺流程简洁、工期短、经济性指标高,具有传统挂篮施工法无可比拟的优越性;异步施工法施工全过程中结构应力变化合理,始终处于安全范围内。
For application and population of PC composite box-girder bridge with corrugated steel webs, a new asynchronous cantilever construction method is adopted in a real bridge to enhance the construction level and reflect the economic benefit of this type of bridge. Taking a real bridge under construction as the research object, the construction processes and economic indexes between the traditional hanging basket cantilever construction method and the asynchronous cantilever construction method is compared. Based on the large finite element program ANSYS, a fine finite element model of the studied bridge is built, detailed analysis of the mechanical property of the key sections of the bridge structure is conducted in the whole process of construction, the whole process of construction, and the calculation result is compared with the field testing data of the real-time monitored stress. The result indicates that （ 1 ） the process of asynchronous cantilever construction method is simple and clear, the construction period is short and the economic indicators are high, this proposed asynchronous cantilever construction method is far superior to the traditional hanging basket cantilever construction method; （2） the stresses of structure are varied in a reasonable and safety range during the construction for the proposed method.
出处
《公路交通科技》
CAS
CSCD
北大核心
2016年第8期58-64,共7页
Journal of Highway and Transportation Research and Development
基金
国家自然科学基金项目(51308071)
国家重点基础研究发展计划(九七三)项目(2015CB057701)
交通运输部应用基础研究项目(2015319825120)
关键词
桥梁工程
PC组合箱梁
有限元法
波形钢腹板
应力
bridge engineering
PC composite box-girder
finite element method
corrugated steel web
stress
