| 石贤增,王钱泱,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(3):1-7，17 |
| 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 Overturning Stability of Curved Continuous Girder Bridge Based on Orthogonal Experiment and GreyTheory |
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| 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 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重点项目（KJ2019A0747）；安徽省住房城乡建设科学技术计划项目（2019YF-029） |
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| 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，对曲线半径、桥台横向支座间距、中墩横向支座间距、边中跨长度比值等四类典型参数进行了方案设计。依据规范提供的抗倾覆稳定性系数计算方法，利用 Midas/Civil 软件建立有限元模型进行分析计算，并采用灰色关联法对结果进行敏感性分析。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。进一步分析主要敏感参数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 study the influence of physical parameters on the overturning stability of the curved continuous girder bridge，a researchplan was designed based on orthogonal experiments considering four typical parameters，namely curve radius，transverse bearingspacing of bridge abutment，transverse bearing spacing of middle pier，and edge-to-medium span length ratio. According to thecalculation method of overturning stability coefficient provided by JTG 3362-2018，a finite element model was established using Midas/Civil software，and the sensitivity analysis of the results was carried out by gray correlation method. The results show that the curveradius is the main sensitive factor that affects the overturning stability of the cured continuous girder bridge，followed by the side piersspacing and the middle pier spacing，while the sensitivity of the length ratio of the side- span and mid-span have minimum influences.The main sensitive parameters on the overturning stability of the bridge is analyzed，and the key points in the overturning design of thebridge are clarified，which provides references for the overturning design research of the curved bridge. |
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