基于改进的D-S证据理论的桥梁监测数据融合研究  

Research on Bridge Monitoring Data Fusion based on Improved D-S Evidence Theory

作　　者：丁腾辉 冉志红 林帆 杨恩斌 施静娴[2] 尤忠义 DING Teng-hui;RAN Zhi-hong;LIN Fan;YANG En-bin;SHI Jing-xian;YOU Zhong-yi(School of Architecture and Planning,Yunnan University,Kunming 650500,China;Oxbridge College,Kunming University of Science and Technology,Kunming 650102,China)

机构地区：[1]云南大学建筑与规划学院,昆明市650500 [2]昆明理工大学津桥学院,昆明市650102

出　　处：《公路》2022年第8期114-120,共7页Highway

基　　金：国家自然科学基金项目,项目编号51968074;云南大学科研创新基金项目,项目编号2020Z54。

摘　　要：采用单一监测设备对桥梁结构进行监测已不能满足现实需求。使用不同监测设备对桥梁结构进行多角度和多类型的测量,需要采用现代信息分析技术并使用计算机进行辅助计算,对这些信息进行融合处理。与传统的概率论融合方法相比,D-S证据理论不仅可以表达随机不确定性,还可以表达主观不确定性信息,融合后可以有效降低系统的不确定性。采用Midas Civil对桥梁结构进行移动荷载时程分析,得到不同结构损伤指标,基于D-S证据理论进行数据融合,最后对结构的损伤做出精准识别。Using single monitoring equipment to monitor the bridge structure can no longer meet the actual needs. Multi-angle and multi-type measurement of bridge structures by means of different monitoring equipment requires utilizing modern information analysis technology and computer-assisted calculation to fuse the information. Compared with the traditional fusion method of probability theory, D-S evidence theory can not only express the random uncertainty, but also express the subjective uncertainty information, which can effectively reduce the uncertainty of the system after fusion. In this paper, Midas Civil is used to analyze the moving load time history of the bridge structure, and different structural damage indexes are obtained. Based on the D-S evidence theory, data fusion is carried out, and finally the damage of the structure is accurately identified.

关 键 词：桥梁监测 D-S证据理论 数据融合 多源异构 

分 类 号：U446.2[建筑科学—桥梁与隧道工程]