| 无铰拱桥加固改造后的强度验算——梁拱式拱上建筑新桥型专题之二 |
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| 引用本文： | 杜志刚,杨丽辉,王国鼎. 无铰拱桥加固改造后的强度验算——梁拱式拱上建筑新桥型专题之二[J]. 公路, 2002, 0(3): 54-57 |
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| 作者姓名： | 杜志刚 杨丽辉 王国鼎 |
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| 作者单位： | 华中科技大学,武汉市,430074 |
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| 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。
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| 关 键 词： | 拱桥 加固改造 内力计算 强度验算 截面几何特性 |
| 文章编号： | 0451-0712(2002)03-0054-03 |
| 修稿时间： | 2001-11-28 |
Checking Computation of Strength of Reamless Arch Bridge After Strengthed and Altered of Reamless Arch Brigde |
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| DU Zhi gang,YANG Li hui,WANG Guo ding. Checking Computation of Strength of Reamless Arch Bridge After Strengthed and Altered of Reamless Arch Brigde[J]. Highway, 2002, 0(3): 54-57 |
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| Authors: | DU Zhi gang YANG Li hui WANG Guo ding |
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| Abstract: | 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. |
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| Keywords: | arch bridge strengthening and alteration calculation of internal force checking computation of strength geometrical characters of calculating section |
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