一种双曲拱桥承载能力分析及加固设计新方法  

A New Method for Reinforcement Design of Double Curved Arch Bridge and Load-carrying capacity analysed

作　　者：李旭 

机构地区：[1]中国铁建十四局集团第四工程有限公司,济南250200

出　　处：《北方交通》2009年第12期52-56,共5页Northern Communications

摘　　要：利用ANSYS软件的平面杆系有限元法进行内力检算,以及对非线性混凝土主拱圈三维实体单元进行加固前后荷载响应模拟,并以此为根据进行锚喷混凝土把"拱型"结构变成"箱型"结构加固方法的补强加固设计和评定各部位的加固增强效果,取得了预期的加固提载效果,具有一定的推广实用价值。The check computation of internal force is carried out by finite element method for plane tie of ANSYS software. Load response simulation before and after reinforcement of 3D entity nuit of non - linear concrete main arch ring is done as well. As basis with it, strengthening design - archoring - shotcreting the concrete to ＂Arch -type＂ structure changes into ＂Box Structure＂ -is conducted, and assessed the reinforcing effects of each position. Moreorer desired results are achieved. Which own definited spread and practical value.

关 键 词：双曲拱桥 承载力 有限元 混凝土非线性 内力分析 锚喷 “拱型”变“箱型” 

分 类 号：U448.221[建筑科学—桥梁与隧道工程]