济祁高速连接线新大桥拱肋吊装过程分析

Analysis of Arch Rib of New Bridge Hoisting Process of Jiqi High Speed Connecting Line

以济祁高速连接线新大桥钢拱肋吊装为例,应用MIDAS软件,考虑重力和风荷载,在4种工况下分析了整个钢拱肋吊装过程中应力——应变变化特征和位移演化规律,研究结果表明:在自重及风荷载作用下,最大总位移和竖向位移位于边拱中部,最大顺风向位移位于边拱顶部。

Steel structures are widely used because of their durability and fast assembly with the rapid development of China's infrastructure construction.This study,taking the Jiqi high speed connecting line as an example and using MIDAS,and considering the loading of weigh and wind force,investigated the stress-strain characteristics and displacement evaluation rule of arch rib of steel structure during the hoisting process under the four working conditions.The results show that the maximum total displacement and vertical displacement are located at the middle of the side arch,and the maximum downwind displacement is at the top of the arch rib of new bridge.