摘要
为了研究斜拉扣挂施工大跨度钢管混凝土拱桥的扣挂索力,采用以影响矩阵法为基础,线性规划确定扣索张力迭代初值,然后计入切向拼装位移影响,通过正装插值迭代搜索最佳索力的方法,分析了以拱肋安装线形为目标的斜拉扣挂索力确定流程与方法。结果表明,所提出的方法可以实现钢管混凝土拱桥斜拉扣挂一次张拉扣索,达到拱肋线形安装目标要求,为类似工程提供参考。
To study the stayed-buckle cable force of long-span concrete filled steel tube（ CFST） arch bridge using inclined cable hoisting construction method,based on influence matrix method and linear programming,the iterative initial value of cable force is determined. Then,considering the effect of tangential assembling displacement,through forward interpolation iteration searching for the most appropriate cable force,the procedure and method for determine stayed-buckle cable force for appropriate arch rib installation shape are analyzed. The result shows that the proposed method could realize one-time hoisting of stayed-buckle cable force of CFST arch bridge,it can meet the requirement of arch rib installation shape and provide a reference for similar engineering.
出处
《公路交通科技》
CAS
CSCD
北大核心
2016年第6期61-67,共7页
Journal of Highway and Transportation Research and Development
基金
国家自然科学基金项目(50808019)
关键词
桥梁工程
斜拉扣挂索力
扣索力优化计算方法
影响矩阵
线性规划
bridge engineering
stayed-buckle cable force
optimized calculation method of cable force
influence matrix
linear programming
