摘要
主拱圈的变形对拱桥安全运营构成严重威胁,严重影响拱桥承载能力和正常使用性能.本文以拱圈轴线为悬链线的拱桥为例,探讨MATLAB技术在实测悬链线方程中的应用,解决拱轴线为悬链线在实测条件先天不足情况下,如何由现有实测数据推导出整座拱桥现有悬链线方程,获得实测拱桥的拱轴系数、净跨和矢高,为拱桥承载能力评估和有限元建模提供重要参数.
The deformation of main arch ring seriously affects the bearing capacity and usability of arch bridges,which gives serious threats to the safe operation of arch bridges.Taking the arch bridge with arch axis of eatenary as an example,this paper explores the application of MATLAB technology in measuring catenary equation,It also discusses how to deduce the existing catenery equation of the whole bridge on the basis of the measured data in order to obtain coefficient,net span,and height of the measured arch bridge when the measured condition is unfavorable.Besides,this paper is intended for offering important parameters to the bearing capacity evaluation and finite element modeling of arch bridges.
作者
杨玉国
Yang Yuguo(China Railway 16th Bureau Group Road and Bridge Engineering Co.Ltd,,.Beijing101500,China)
出处
《铁道建筑技术》
2018年第A01期121-123,168,共4页
Railway Construction Technology
关键词
MATLAB
拱桥
悬链线方程
工程应用
MATLAB
arch bridge
catenary equation
engineering application
