拱肋面外稳定性验算

Out of Plane Stability-Checking-Calculation

拱肋面外稳定性验算主要考虑到联结系作用的拱肋稳定性、斜吊杆影响、以及吊杆力的非保向效应。分别对二铰拱、无铰拱做出验算,并按照临界荷载系数及拱肋正截面承载力,对稳定性影响做出安全评估。根据评估资料,对施工方案做出探索。所有相关尺寸均为虚拟,不是设计实例,仅作算例参考。

This article continues the stability-checking-calculation examples of steel tube truss arch rib composite tied arch bridge.The main contents of the arch rib out-of-plane stability-checking-calculation is to consider the arch rib stability under the action of the coupling system,influence of inclined derrick,and the non-directional effect of derrick force.The two-hinged arch and no-hinged arch were checked,and the influence of critical load coefficient and carrying capacity of normal section of arch rib on stability was evaluated.Explore construction options based on evaluation materials.This paper is not a design example and all the relevant dimension is virtual,which is only for example reference.