Norea矮塔斜拉桥索力优化
Cable Force Optimization of Norea Extradosed Cable-stayed Bridge
刘松鑫 1徐海宾 1李磊2
作者信息
- 1. 河南理工大学 河南 焦作 454000
- 2. 河南省交通规划设计研究院股份有限公司 河南 郑州 450000
- 折叠
摘要
为确定柬埔寨Norea三跨双塔单索面混凝土矮塔斜拉桥的最优成桥索力,基于有限元模型,分别采用刚性支撑连续梁法、最小弯曲能法、影响矩阵法对成桥索力进行了分析和优化.结果表明:三种优化方法中以影响矩阵法得到的索力值效果最好,将最终优化索力值与原设计值对比,分析了斜拉桥的内力、位移以及应力变化,在恒荷载或恒荷载+附加荷载组合作用下,优化后的索力分布更加均匀,结构整体的弯矩、位移以及应力均有所减小,矮塔斜拉桥整体受力和线形更加理想.
Abstract
In order to determine the optimal bridge force of Norea three-span cale-stayed bridge in Cambodia,the rigid support con-tinuous beam method,minimum bending energy method and influence matrix method are used based on the finite element model.The results show that the three optimization method to get the matrix method,the final optimization cable value compared with the original design value,analyzed the internal force,displacement and stress change of cable-stayed bridge,under the action of constant load or constant load +additional load combination,the optimized cable force distribution is more uniform,the structure of the overall moment,displacement and stress are reduced,and short tower cable-stayed bridge overall stress and linear shape is more ideal.
关键词
矮塔斜拉桥/刚性支撑连续梁法/最小弯曲能法/影响矩阵法/索力优化Key words
extradosed cable-stayed bridge/rigid support continuous beam method/minimum bending energy method/influence matrix method/cable force optimization引用本文复制引用
基金项目
河南省高等学校重点科研项目(16A560021)
河南理工大学博士基金(B2016-63)
出版年
2024
NETL
NSTL
万方数据