摘要
基于层次分析法的桥梁水下桩基传统安全评估方法中,用于确定权重的判断矩阵中各数值完全由专家经验确定,导致评估结果主观性过大.为此,在福建省桥梁水下桩基检测数据基础上,提出结合熵权法计算得到客观权重,对传统安全评估方法进行改进.首先,基于现有规范和水下桩基病害特点建立多层次安全评估模型;其次,分别采用层次分析法和熵权法计算各评估指标的主、客观权重值,并将其组合确定指标的综合权重,该方法克服了传统层次分析法单独使用时仅通过主观经验确定病害权重值的局限性.最后,以福州市某桥为例对其水下桩基进行评估,验证了该评估方法的合理性和实用性.
In the traditional safety assessment method of bridge underwater pile foundation based on the analytic hierarchy process,the values in the judgment matrix used to determine the weight are completely determined by expert experience,which leads to excessive subjectivity of the assessment results.Based on the inspection data of bridge underwater pile foundation in Fujian Province,this paper introduces the entropy weight method to calculate the objective weight,and improves the traditional safety assessment method.First,this paper establishes a multi-level safety assessment model based on the existing specifications and the characteristics of underwater pile foundation defect.Secondly,it uses the analytic hierarchy process and the entropy method to calculate the subjective and objective weights of each evaluation index,and combines them to determine the index comprehensive weighting.This method overcomes the limitation of determining the defect weight value only through subjective experience when the traditional analytic hierarchy process is used alone.Finally,this paper takes a bridge in Fuzhou City as an example to evaluate the safety of the underwater pile foundation,which verifies the rationality and practicability of the evaluation method.
作者
吴晓笑
沈圣
麻胜兰
姜绍飞
林晓威
刘发水
何肖斌
张培旭
吴少峰
WU Xiaoxiao;SHEN Sheng;MA Shenglan;JIANG Shaofei;LIN Xiaowei;LIU Fashui;HE Xiaobin;ZHANG Peixu;WU Shaofen(College of Civil Engineering,Fuzhou University,Fuzhou,Fujian 350108,China;CSCEC Strait Construction and Development Co.,Ltd.,Fuzhou,Fujian 350015,China;College of Civil Engineering,Fujian University of Technology,Fuzhou,Fujian 350118,China;Fuzhou Highway Development Centre,Fuzhou,Fujian 350025,China;Fuzhou Communications Construction Investment Group Co.,Ltd.,Fuzhou,Fujian 350028,China)
出处
《福州大学学报（自然科学版）》
CAS
北大核心
2022年第1期111-119,共9页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省科技厅引导性项目(2020Y0015)
福建省交通运输科技项目(201716)
福建省自然科学基金资助项目(2020J05184)
中建海峡建设发展有限公司科技计划项目(ZJHX-2020-CZS-002)。
关键词
桥梁水下桩基
层次分析法
熵权法
安全评估
underwater bridge pile foundation
analytic hierarchy process
entropy weight method
safety assessment
