【摘要】 鉴于斜靠拱桥斜拱拱轴线的选用只遵从几何条件的现状,对斜拱进行受力分析,得到其空间受力平衡微分方程组,通过Runge-Kutta和迭代法求其数值解;基于斜拱受力基本假定,简化其空间受力平衡微分方程组,并拟合出斜拱空间拱轴线的实用表达式.误差分析和数值算例表明本文方法和实用表达式结果满足斜拱空间受力的需要,是对空间受力拱桥拱轴线的有益探索.更多还原

【Abstract】 Because of arch axis selection of leaning type arch bridge depend on geometric factor,mechanical analysis of leaning arch rib was done for spatial equilibrium differential equations derivation,and numerical solution was obtained by Rung-Kutta method and iteration method.Based on simplify assumption of leaning arch rib forces,the spatial equilibrium differential equations was simplified and the solution of equations could be fitted to a practical expressions.Proposed method and practical arch axis expressions was suitable for leaning arch rib proved by error analysis and numerical analysis,and this result was a useful exploration for spatial forced arch bridgs.更多还原