多跨连续刚构桥三分力系数数值模拟分析
Numerical Simulation Analysis of Three-component Force Coefficient of Multi-span Continuous Rigid Frame Bridge
谢晖 1史剑飞 1曾雪阳 1胡丽娟2
作者信息
- 1. 中机中联工程有限公司,重庆 400041
- 2. 重庆公共运输职业学院,重庆 402247
- 折叠
摘要
为研究桥梁在施工阶段和成桥阶段的三分力系数变化.以芦沟河特大桥为例,采用计算流体力学方法建立桥梁的数值模型,计算分析施工阶段和成桥阶段的三分力系数变化规律.结果表明:同一条件下施工阶段与成桥阶段的三分力系数变化规律基本一致;由于护栏存在的影响,相比于施工阶段,成桥阶段的三分力系数均产生了显著变化,阻力系数和力矩系数相比于施工阶段,二者最大差值超过了20%,升力系数相比于施工阶段,差值可达17%.
Abstract
In order to study the variation of the three-component force coefficient of the bridge in the construction stage and the bridge completion stage.Taking the Lugou River Bridgeas an example,the numerical model of the bridge was established by computational flu-id dynamics method,and the variation law of the three-component force coefficient in the construction stage and the bridge completion stage was calculated and analyzed.The results show that under the same conditions,the variation law of the three-component force co-efficient in the construction stage and the bridge formation stage is basically the same.Due to the influence of the guardrail,compared with the construction stage,the three-component force coefficient of the bridge formation stage has changed significantly,the maximum difference between the resistance coefficient and the moment coefficient is more than 20%compared with the construction stage,and the lift coefficient is up to 17%compared with the construction stage.
关键词
连续刚构桥/计算流体力学/数值模拟/三分力系数Key words
continuous rigid frame bridge/computational fluid dynamics/numerical simulation/three-component force coefficient引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据