| 石贤增,王钱泱,康小方,许荣盛,万鑫.基于正交实验和灰色理论的曲线连续梁桥抗倾覆稳定性分析[J].安徽建筑大学学报,2022,30(): |
| 基于正交实验和灰色理论的曲线连续梁桥抗倾覆稳定性分析 |
| Analysis of Influencing Factors on Anti-overturning Stability of Curved Continuous Girder Bridge Based on Orthogonal Experiment and Grey Theory |
| 投稿时间：2021-04-17 修订日期：2021-06-01 |
| DOI： |
| 中文关键词: 曲线连续梁桥 灰色理论 正交实验 抗倾覆稳定性 |
| 英文关键词: curved continuous girder bridge grey theory orthogonal experiment anti-overturning stability |
| 基金项目:安徽省自然科学基金资助项目（2008085QE245）；安徽省高校省级自然科学研究项目-重点项目（KJ2019A0747）；安徽省住房城乡建设科学技术计划项目（No.2019YF-029） |
|
| 摘要点击次数: 1513 |
| 全文下载次数: 494 |
| 中文摘要: |
| 为研究曲线连续梁桥物理参数对桥梁抗倾覆稳定性的影响，基于正交实验的方法，对曲线半径、桥台横向支座间距、中墩横向支座间距、边中跨长度比值四种典型参数设计不同水平组合的9组实验组进行分析。依据规范提供的抗倾覆稳定性系数计算方法，并考虑曲线桥横向均布扭矩对抗倾覆稳定性的影响，利用Midas/Civil软件建立有限元模型进行分析计算。构建灰色关联模型进行敏感性分析,结果表明：曲线半径是影响曲线梁桥抗倾覆稳定性的主要敏感因素，桥台支座间距和中墩支座间距敏感性次之，边中跨长度比值敏感性最小。进一步选取高度相关因素分析得到了其对桥梁抗倾覆稳定性的影响规律，进而明确了桥梁抗倾覆设计中的重点，对研究曲线桥梁抗倾覆设计具有借鉴意义。 |
| 英文摘要: |
| To investigate the influence of the physical parameters of the curved continuous girder bridge on the stability of the curved continuous girder bridge. Through the method of orthogonal experiment, four typical parameters of the curve radius, the distance between side piers, the distance between middle pier and the length ratio of the side span and intermediate span were designed nine experimental groups with different levels of combination for analysis. According to the calculation method of the anti-overturning stability coefficient provided by the specification, and considering the influence of the lateral uniform torque of curved continuous girder bridge on the anti-overturning stability of the bridge structure, the finite element model is established by Midas/Civil software for analysis and calculation. Based on the results, construct a grey relational model for sensitivity analysis. The results show that the curve radius is the main sensitive factor that affects the anti-overturning stability of the cured continuous girder bridge, followed by the distance between side piers and the distance between middle pier, the sensitivity of the length ratio of the side span and intermediate span is small. Then it analyzes the highly correlated factors to obtain the law of their influence on the anti-overturning stability of curved continuous girder bridge. Further the key points of the bridge anti-overturning design are clarified, which can be used for reference in the study of the anti-overturning design of curved bridges. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
