Case study regarding the dynamic compensation of steel-concrete bridge hybrid structures

6th ModTech International Conference - Modern Technologies in Industrial Engineering

Scutaru, M.C.^1 ; ranu, N.^1 ; Comisu, C.C.^2 ; Boac, G.^2 ; Isopescu, D.N.^1 ; Ungureanu, D.^1

Department of Civil and Industrial Engineering, Gheorghe Asachi Technical University of Iasi, Blvd. Mangeron, no. 1, Iasi

700050, Romania^1

Department of Transport Infrastructure and Foundations, Gheorghe Asachi Technical University of Iasi, Blvd. Mangeron, no. 1, Iasi

700050, Romania^2

关键词: Dynamic characteristics;    Dynamic compensation;    Economic growths;    Efficient monitoring;    Hybrid structure;    In- situ monitoring;    Monitoring system;    Transport infrastructure;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/400/4/042052/pdf
DOI  :  10.1088/1757-899X/400/4/042052

来源: IOP

【 摘 要 】

Transport infrastructure is one of the most important elements needed for the reliable development and economic growth in an evolving country. Because most of the infrastructure is already built, road managers consider necessary to study, develop and implement bridge degradation monitoring systems. If the technical state of the structures is known in every moment, decisions to intervene on degradations at the right moment from the very first stages of their development can be made more easily. In order to implement an efficient monitoring system, it is necessary to know the dynamic characteristics of the non-degraded structure, and that is difficult to achieve when bridges are already in operation. To minimize those disadvantages, researchers have developed various methods of modelling structures to address the lack of initial data. In this paper, the authors present a case study about the determination of the modal shapes, the frequencies and the displacements of the bridge located on the national road DN 28 at km 6 + 957, in Scheia, Romania. The superstructure will be modelled through the Ansys program, determining the theoretical dynamic characteristics. These will be needed in the next stage of the experimental process to compare the numerical data to those from the in-situ monitoring system.