基于模糊隶属度函数的桥梁结构损伤状态评估  

Damage assessment of bridge structures based on fuzzy membership functions

作　　者：吴杰 黄楚越 韩贝林 WU Jie;HUANG Chuyue;HAN Beilin(School of Civil Engineering and Architecture,Wuhan Polytechnic University,Wuhan 430023,China;Hubei Assembly Building Engineering Technology Research Center,Wuhan 430023,China)

机构地区：[1]武汉轻工大学土木工程与建筑学院,武汉430023 [2]湖北省装配式工程技术研究中心,武汉430023

出　　处：《武汉轻工大学学报》2024年第4期96-101,共6页Journal of Wuhan Polytechnic University

基　　金：湖北省教育厅科学研究计划资助项目中青年人才项目(编号:Q20221606);湖北省住房和城市建设厅项目(编号:2020年城乡建设发展-01).

摘　　要：为评估桥梁结构的整体损伤状态,以模糊理论为基础,引入模糊隶属度函数,构建了桥梁结构损伤状态评估模型。依托某预应力混凝土梁桥工程实例,对桥梁结构中确定的多种因素采用正态分布函数的形式进行定量表示,然后分别计算各因素所对应的隶属度,再组合成结构的整体隶属度对结构损伤状态进行分级判断。所提方法与《公路桥涵养护规范》中的状况评估方法得到的桥梁结构状况评级一致,验证了基于模糊隶属度函数的桥梁结构损伤状态评估方法的可靠性。该方法可在一定程度上能降低人为主观因素对桥梁结构损伤状况评估的影响,可应用于同类型桥梁进行结构损伤状态的评估分析。In order to evaluate the damage state of bridge structure,the fuzzy membership function is introduced to construct the damage state evaluation model of bridge structure based on fuzzy theory.Based on a project example of a prestressed concrete beam bridge,various factors determined in the bridge structure are quantitatively represented in the form of normal distribution function,and then the membership degree corresponding to each factor is calculated respectively,and then combined into the overall membership degree of the structure the damage state is graded.The proposed method is consistent with the condition rating obtained by the condition assessment method in the Maintenance Code for Highway Bridges and Culverts,and verifies the reliability of the damage state assessment method based on fuzzy membership function.This method can partially alleviate the influence of subjective human factors on the assessment of structural damage in bridges and is applicable for analyzing the evaluation of structural damage state in bridges with similar characteristics.

关 键 词：模糊理论 模糊隶属度函数 损伤状态评估 桥梁结构 

分 类 号：U24[交通运输工程—道路与铁道工程]