山东农业大学学报（自然科学版）2017，Vol.48Issue(4)：540-544,5.DOI:10.3969/j.issn.1000-2324.2017.04.013
连续弯箱梁桥抗倾覆稳定性影响因素的有限元分析
Finite Element Analysis on Influential Factors of Structural Stability of Continuous Curved Beam Box-Bridge
摘要
Abstract
On account of box girder bridge whose horizontal alignment is circular curve, this paper takes (20+32+20) m continuous box girder bridge in the general highway bridge graph as an example to calculate with Midas software by means of introducing the parameter of capsized critical curvature radius to analyze the influences of bridge aperture, curvature radius, distance between bearing, pre-eccentric and other factors on critical radius and stability against overturning. The results showed that the changes of the above factors had significant effects on the critical radius of curvature; when the actual radius of curvature of the bridge was equal or close to the critical radius of curvature, it had the minimum stability against overturning;the reasonable evaluation of various factors could effectively avoid the critical radius of curvature and improve the stability against overturning. The critical radius of curvature could be used as a simple and practical quantitative indicator to preliminarily estimate the possibility of overall overthrow of the continuous box girder.关键词
连续弯箱梁桥/稳定性/影响因素Key words
Continuous curved beam box-bridge/stability/influential factors分类
通用工业技术引用本文复制引用
张玥,魏永杰,杨庆嵘,许有俊..连续弯箱梁桥抗倾覆稳定性影响因素的有限元分析[J].山东农业大学学报（自然科学版）,2017,48(4):540-544,5.基金项目
内蒙古自治区高等学校科学技术研究(NJZY14167) （NJZY14167）
