摘要
在斜拉桥施工控制中,为了达到设计成桥状态目标,需要对施工索力进行精确计算.以某斜拉桥为例,通过差值法进行正装迭代分析,通过迭代消除不闭合问题,使索力精确收敛于设计成桥索力.结果表明:该方法数学概念简单且不需要提取影响矩阵,整个计算过程简便易行,在斜拉桥施工控制中具有较好的精度和分析效率,可减少计算过程中受过多不确定因素影响,对解决类似问题可提供有益参考.
In the construction control of cable-stayed bridges,in order to achieve the goal of bridge state design,it is necessary to calculate the construction cable force accurately.Taking a cable-stayed bridge as an example,the forward-loading iteration analysis is carried out by the difference method,and the unclosed problem is eliminated by iteration,so that the cable force can converge to the designed cable force accurately.The example proves that the method is simple in mathematical concept and does not need to extract the influence matrix.The whole calculation process is simple and easy.It has more accurate and analysis efficiency in the construction control of cable-stayed bridges,and can reduce too much imprecision in the calculation process.The influence of certain factors can provide useful reference for solving similar problems.
作者
张录斌
ZHANG Lu-bin(School of Civil Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China)
出处
《兰州工业学院学报》
2019年第3期14-17,共4页
Journal of Lanzhou Institute of Technology
关键词
斜拉桥
施工索力
差值法
正装迭代法
cable-stayed bridge
construction cable tension force
differential method
forward-analysis iterative method
