Full-scale monitoring of wind and suspension bridge response

1st Conference of Computational Methods in Offshore Technology

计算机科学

Snæbjörnsson, J.T.^1,2 ; Jakobsen, J.B.^1 ; Cheynet, E.^1 ; Wang, J.^1

Department of Mechanical and Structural Engineering and Materials Science, University of Stavanger, Norway^1

School of Science and Engineering, Reykjavik University, Iceland^2

关键词: Environmental action;    Environmental conditions;    Monitoring activities;    Monitoring programs;    Natural excitations;    Response parameters;    Structural response;    Turbulence characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/276/1/012007/pdf
DOI  :  10.1088/1757-899X/276/1/012007

学科分类：计算机科学（综合）

来源: IOP

【 摘 要 】

Monitoring of real structures is important for many reasons. For structures susceptible to environmental actions, full-scale observations can provide valuable information about the environmental conditions at the site, as well as the characteristics of the excitation acting on the structure. The recorded data, if properly analyzed, can be used to validate and/or update experiments and models used in the design of new structures, such as the load description and modelling of the structural response. Various aspects of full-scale monitoring are discussed in the paper and the full-scale wind engineering laboratory at the Lysefjord suspension bridge introduced. The natural excitation of the bridge comes from wind and traffic. The surrounding terrain is complex and its effect on the wind flow can only be fully studied on site, in full-scale. The monitoring program and associated data analysis are described. These include various studies of the relevant turbulence characteristics, identification of dynamic properties and estimation of wind- and traffic-induced response parameters. The overall monitoring activity also included a novel application of the remote optical sensing in bridge engineering, which is found to have an important potential to complement traditional "single-point" wind observations by sonic anemometers.