基于交通排堵方案的钢管混凝土拱桥安全性研究

Research on Safety of Concrete-filled Steel Tube Arch Bridge Based on Traffic Blockage Removal Scheme

文章以钢管混凝土拱桥为背景,对双向六车道钢管混凝土拱桥单方向堵塞后排堵方案的4种工况,在有限元软件Midas Civil中进行分析,对各工况在背景拱桥上运行后引起的振动及构件内力影响进行研究,得出在人为疏导排堵方案中工况3(两逆向一顺向)对拱桥结构的安全性能影响最小,为日后涉及到钢管混凝土拱桥发生堵塞进行排堵时给出一定的建议。

This paper takes the concrete-filled steel tube arch bridge as the background,analyzes the four working conditions of the two-way six-lane concrete-filled steel tube arch bridge in one direction and the rear blocking scheme in the finite element software Midas Civil.Research on the vibration and internal force of the members caused by various working conditions after running on the background arch bridge.It is concluded that working condition three(two reverse directions and one forward direction)has the least impact on the safety performance of the arch bridge structure in the artificial drainage and blockage removal scheme,and certain suggestions are given when the blockage of the concrete-filled steel tube arch bridge is involved in the future.