A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Theory for Retrieving Bridge Mode Shapes
This chapter presents a theoretical framework for constructing the bridge mode shapes from the dynamic response of a passing test vehicle. Compared with the conventional approaches that only measure a certain number of points on the bridge, the current approach offers much more spatial information, and therefore higher resolution, in retrieving the mode shapes, as the test vehicle can virtually touch each point along its path on the bridge. The chapter focuses on the concept of instantaneous amplitudes obtained as a result of the Hilbert transform. Then, the theoretical formulation for the present approach is given in detail, followed by the operating algorithms and constraints. Through numerical cases, the feasibility of the present approach is illustrated and the factors that affect the accuracy of the retrieved mode shapes are evaluated. The chapter evaluates the impact of the following factors on the accuracy of the retrieved mode shapes: vehicle speed, random traffic, and road surface roughness.
Theory for Retrieving Bridge Mode Shapes
This chapter presents a theoretical framework for constructing the bridge mode shapes from the dynamic response of a passing test vehicle. Compared with the conventional approaches that only measure a certain number of points on the bridge, the current approach offers much more spatial information, and therefore higher resolution, in retrieving the mode shapes, as the test vehicle can virtually touch each point along its path on the bridge. The chapter focuses on the concept of instantaneous amplitudes obtained as a result of the Hilbert transform. Then, the theoretical formulation for the present approach is given in detail, followed by the operating algorithms and constraints. Through numerical cases, the feasibility of the present approach is illustrated and the factors that affect the accuracy of the retrieved mode shapes are evaluated. The chapter evaluates the impact of the following factors on the accuracy of the retrieved mode shapes: vehicle speed, random traffic, and road surface roughness.
Theory for Retrieving Bridge Mode Shapes
Yang, Yeong‐Bin (author) / Yang, Judy P. (author) / Zhang, Bin (author) / Wu, Yuntian (author)
Vehicle Scanning Method for Bridges ; 175-194
2019-10-28
20 pages
Article/Chapter (Book)
Electronic Resource
English
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