摘要
加固改造后的无铰拱桥 ,由于恒载压力线和拱轴线相差较多 ,因而不能采用查表计算的办法 ,可以用有限元计算软件进行内力计算。本文提出在双曲拱桥加固改造后 ,当计算截面达到最小配筋率 ,按钢筋混凝土结构进行强度验算的方法。提出的方法可适用于一般无铰拱桥 ,如板拱、肋拱、箱形拱等。
The problem of the large eccentricity of the archaxis curve and compressive curve of the hingeless arch bridge after strengthed and altered, may be solved by a method using the FEM software, and it can be checked with the checking method of the RC structure on condition that its bar arrangement overra the minimum steel ratio in the Code. The method can be widely used in the common hingeless arch bridge.
出处
《公路》
北大核心
2002年第3期54-57,共4页
Highway
关键词
无铰拱桥
内力计算
强度验算
截面几何特性
桥梁加固
桥梁改造
arch bridge
strengthening and alteration
calculation of internal force
checking computation of strength
geometrical characters of calculating section
