吊杆索力偏差对钢箱拱梁组合桥拱肋受力性能的影响  

Effect of Suspender Cable Force Deviation on Mechanical Behavior of Arch Rib of Steel Box Arch-Girder Composite Bridges

作　　者：卢舒舒 陈道富 黄汉辉 郑垂孟 LU Shushu;CHEN Daofu;HUANG Hanhui;ZHENG Chuimeng(Department of Transportation Engineering,Fujian Forestry Vocational&Technical College,Nanping,Fujian 350000;Nanping Land Development Group Co.,Ltd,Nanping,Fujian 350000;Fujian Chuanzheng Communications College,Fuzhou,Fujian 350116;Nanping Wuyi Development Group Co.,Ltd,Nanping,Fujian 350000)

机构地区：[1]福建林业职业技术学院交通工程系,福建南平353000 [2]南平市土地发展集团有限公司,福建南平353000 [3]福建船政交通职业学院土木工程学院,福建福州350000 [4]南平武夷发展集团有限公司,福建南平353000

出　　处：《武夷学院学报》2023年第12期64-74,共11页Journal of Wuyi University

基　　金：福建省教育厅中青年教师教育科研项目(JAT201121)。

摘　　要：为研究吊杆索力偏差对钢箱拱梁组合桥拱肋受力性能的影响,以某钢箱拱梁组合桥为研究对象,对比分析频率法和磁通量法对吊杆索力测量的适用性。采用有限元分析方法,研究不同吊杆索力偏差对钢箱拱梁组合桥拱肋内力和变形的影响。结果表明短吊杆索力的测量宜采用磁通量法。吊杆索力偏差基本不会影响钢箱拱梁组合桥拱肋所受轴力,但对拱肋所受弯矩影响较大。当吊杆索力偏差在-30%~30%区间变化时,与其他位置吊杆相比,L/4跨位置吊杆索力发生偏差对拱肋受力性能影响较大。与短吊杆索力偏差相比,长吊杆索力偏差对拱肋拱顶变形的影响较为明显。与单根吊杆索力偏差相比,双根吊杆索力偏差对拱肋弯矩和变形影响较大。To study the effect of the cable force deviation of the suspender on mechanical behavior of the arch rib of steel box arch-girder composite bridges,based on a steel box arch-girder composite bridge,the paper compared and analyzed the applicability of frequency method and magnetic flux method for measuring the cable force of suspender and finite element analysis was carried out to study the effect of the cable force deviation of different suspender on the internal force and deformation of arch rib of Steel Box arch-girder composite bridges.It was found that the magnetic flux method should be used for measuring the cable force of short suspender.The cable force deviation of the suspender had a little and great effect on the axial force and the bending moment of arch rib of steel box arch-girder composite bridges,respectively.When the cable force deviation of the suspender changed from-30%to 30%,compared with the other suspenders at other positions,the cable force deviation at the L/4 span position has a greater effect on the mechanical performance of the arch rib.Compared with the cable force deviation of the short suspender,the cable force deviation of the long suspender on the deformation of the arch rib at the arch crown is more obvious.Compared with the cable force deviation of a single suspender,the deviation of cable force of a double suspender has a greater effect on the bending moment and deformation of the arch rib.

关 键 词：钢箱拱梁组合桥 频率法 磁通量法 索力偏差 受力性能 

分 类 号：U447[建筑科学—桥梁与隧道工程]