基于模糊综合评判的大件运输安全通行桥梁承载能力评估方法  

A fuzzy comprehensive evaluation method for assessing the load⁃bearing capacity of bridges in the safe passage of heavy cargo transport

作　　者：白宇帆 孙波 刘玉静 刁鹏程 范官杰 葛刘杨 刘镇 李永义 BAI Yufan;SUN Bo;LIU Yujing;DIAO Pengcheng;FAN Guanjie;GE Liuyang;LIU Zhen;LI Yongyi(Jiangsu Expressway Engineering Maintenance Technology Co.,Ltd.,Nanjing 211106,China;College of Transportation Engineering,Nanjing Tech University,Nanjing,211816,China)

机构地区：[1]江苏高速公路工程养护技术有限公司,江苏南京211106 [2]南京工业大学交通运输工程学院,江苏南京211816

出　　处：《现代交通与冶金材料》2025年第2期68-74,共7页Modern Transportation and Metallurgical Materials

基　　金：国家自然科学基金面上项目(51878349)。

摘　　要：本文旨在通过研究在役桥梁的承载力折减系数,提出一种适用于大件运输车辆通行桥梁的安全评估流程。研究基于模糊综合评价原理,综合考虑影响桥梁承载能力的多种不利因素,构建了高效的桥梁安全评估模型。在方法验证部分,以京沪高速江苏段某桥梁为例,通过有限元模拟分析大件运输车辆单独通行与混合通行场景下的荷载效应,评估其对桥梁承载力的影响。研究结果表明,在大件运输车辆混合通行场景下,桥梁的承载力能够满足安全通行需求。该研究提出的安全评估流程通过实例验证,展示了其在大件运输任务中的实用性和有效性,为未来桥梁通行安全保障提供了可靠依据。This paper proposes a safety evaluation framework for bridges subjected to heavy vehicle transport by examining the reduction coefficients of load-bearing capacity in operational bridges.The re-search employs the fuzzy comprehensive evaluation method,incorporating various adverse factors af-fecting bridge capacity to develop an efficient safety assessment model.To validate the proposed method,a case study is conducted on a bridge located in Jiangsu section of the Beijing-Shanghai Ex-pressway.Finite element simulations are utilized to analyze the load effects under both standalone heavy-lift vehicle traffic and mixed-traffic conditions,assessing their impact on the bridge's load-bearing capacity.The results indicate that,under mixed-traffic scenarios,the bridge can safely accom-modate heavy cargo vehicles.This safety evaluation framework,validated through practical case studies,demonstrates its effectiveness and applicability in ensuring the structural integrity of bridges for future heavy cargo transportation tasks.

关 键 词：桥梁承载能力 车辆通行安全评估 大件运输 模糊综合评价 有限元模拟 

分 类 号：U441.2[建筑科学—桥梁与隧道工程] U447[交通运输工程—道路与铁道工程]