吊杆索力偏差对多肋钢箱系杆拱桥拱肋受力性能的影响分析
Analysis of the Influence of the Deviation of Suspension Cable Force on the Mechanical Performance of the Arch Ribs of Multi ribbed Steel Box Tied Arch Bridges
邱香港1
作者信息
- 1. 福州市规划设计研究院集团有限公司 福建福州 350108
- 折叠
摘要
为配合交通量的增长和保证桥梁的造型美观,城市桥梁中出现了越来越多的多肋钢箱系杆拱桥.为研究吊杆索力偏差对多肋钢箱系杆拱桥拱肋受力性能的影响,以某多肋钢箱系杆拱桥为研究对象,采用数值分析方法,研究边拱肋和中拱肋吊杆索力偏差对多肋钢箱系杆拱桥拱肋内力和应力的影响.结果表明,中拱肋吊杆索力偏差对拱肋内力和应力的影响程度,明显大于边拱肋吊杆索力偏差对拱肋内力和应力的影响程度.由此说明,对多肋钢箱系杆拱桥而言,要特别注意中拱肋吊杆索力的变化对桥梁拱肋受力性能的影响.
Abstract
In order to meet the growth of traffic volume and ensure the aesthetic appearance of bridges,more and more multi ribbed steel box tied arch bridges have emerged in urban bridges.In order to study the effect of cable force deviation of suspension rods on the mechanical performance of the arch ribs of a multi ribbed steel box tied arch bridge,a multi ribbed steel box tied arch bridge was selected as the re-search object.Numerical analysis methods were used to study the effect of cable force deviation of suspension rods on the internal force and stress of the arch ribs of the multi ribbed steel box tied arch bridge.The results show that the influence of the deviation of the cable force of the middle arch rib suspension rod on the internal force and stress of the arch rib is significantly greater than that of the deviation of the ca-ble force of the side arch rib suspension rod on the internal force and stress of the arch rib.This indicates that for multi ribbed steel box tied arch bridges,special attention should be paid to the influence of changes in the cable force of the suspension rod of the middle arch rib on the mechanical performance of the bridge arch rib.
关键词
钢箱系杆拱/拱肋/受力性能/索力偏差/数值分析Key words
Steel box tied arch/Arch ribs/Stress performance/Cable force deviation/Numerical analysis引用本文复制引用
出版年
2024
NETL
NSTL
万方数据