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 Grey Theory

作　　者：石贤增 王钱泱 万鑫 SHI Xianzeng;WANG Qianyang;WAN Xin(College of Civil Engineering,Anhui Jianzhu University,Hefei 230601,China;School of Forestry and Landscape Architecture,Anhui Agricultural University,Hefei 230036,China)

机构地区：[1]安徽建筑大学土木工程学院,安徽合肥230601 [2]安徽农业大学林学与园林学院,安徽合肥230036

出　　处：《安徽建筑大学学报》2022年第3期1-7,17,共8页Journal of Anhui Jianzhu University

基　　金：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)。

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。To study the influence of physical parameters on the overturning stability of the curved continuous girder bridge,a research plan was designed based on orthogonal experiments considering four typical parameters,namely curve radius,transverse bearing spacing of bridge abutment,transverse bearing spacing of middle pier,and edge-to-medium span length ratio.According to the calculation 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 curve radius is the main sensitive factor that affects the overturning stability of the cured continuous girder bridge,followed by the side piers spacing 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 the bridge are clarified,which provides references for the overturning design research of the curved bridge.

关 键 词：曲线连续梁桥 灰色理论 正交实验 抗倾覆稳定性 

分 类 号：U44[建筑科学—桥梁与隧道工程]