基于主成分分析的人行天桥病害研究  

Study on Diseases of Pedestrian Bridge Based on Principal Component Analysis

作　　者：吕平 龙佩恒[2,3] 季诚 何国顺 LüPing;Long Peiheng;Ji Cheng;He Guoshun(School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;High-tech Innovation Center for Future Urban Design,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;Engineering Structure and New Materials Engineering Research Center of Beijing Higher Education Institutions,Beijing University of Civil Engineering and Architecture,Beijing 100044,China;CABR Technology Co.,Ltd.,China Academy of Buildings Research,Beijing 100013,China)

机构地区：[1]北京建筑大学土木与交通工程学院,北京100044 [2]北京建筑大学未来城市设计高精尖创新中心,北京100044 [3]北京建筑大学工程结构与新材料北京市高等学校工程研究中心,北京100044 [4]中国建筑科学研究院建研科技股份有限公司,北京100013

出　　处：《市政技术》2020年第6期84-86,92,共4页Journal of Municipal Technology

基　　金：北京市优秀人才培养-青年拔尖个人(21351916004);北京市自然科学基金面上项目(8162012);土木工程防灾国家重点实验室开放基金资助(SLDRCE-14-02);建设部研究开发项目(2015-R2-039);国家青年自然科学基金(51508019);国家青年自然科学基金(51308027)。

摘　　要：为了研究人行天桥产生病害的重点部位及针对人行天桥的特别评分标准,以北京市207座人行天桥作为依据,对人行天桥病害进行统计。在此基础上以无监督方法模式识别理论中的主成分分析对人行天桥病害产生位置进行分析,结果表明人行天桥易发生病害的重点部位按重要程度排序为外观(腐蚀)、墩盖梁、伸缩缝、桥面铺装、挂板、梯道、主梁、栏杆、支座。此外,总结出综合评价函数,实现了对人行天桥健康评定时各构件权重的确定。207 pedestrian bridges in Beijing are analyzed to study key parts of diseases and special scoring standard.The main component analysis of unsupervised pattern recognition theory is used to analyze the bridge disease location.According to the order of importance,the key disease parts are as follows:appearance corrosion,pier cap beam,hanging plate,deck pavement,hanging plate,stairway,main beam,handrail and support.In addition,the comprehensive evaluation function is used as a special scoring standard for pedestrian bridge health detection and thus scientific solution achieved.

关 键 词：人行天桥 主成分分析 影响因素 健康评定 

分 类 号：U445.71[建筑科学—桥梁与隧道工程] U291.65[交通运输工程—道路与铁道工程]