斜靠式拱桥空间斜拱拱轴线研究

英文篇名：Research on Spatial Arch Axis of Leaning Type Arch Bridges
中文刊名：湘潭大学自然科学学报
英文刊名：Natural Science Journal of Xiangtan University
作者：胡常福
英文作者：HU Chang-fu1 ; 2(1.School of Civil Engineering ; Central South University ; Changsha 410075 ; 2.School of Civil Engineering and Architecture ; East China Jiaotong University ; Nanchang 330013 China)
中文关键词：斜靠拱桥 ; 空间拱轴线 ; 平衡微分方程组
英文关键词：leaning type arch bridges ; spatial arch axis ; equilibrium differential equations
出版日期：2012-12-15
机构：中南大学土木工程学院;华东交通大学土木建筑学院;
年：2012
期：04
出版单位：湘潭大学自然科学学报

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.
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.

引文

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