A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Directionality in the Transverse Response of Skewed Multi-Span Bridges with Integral Abutments
Skewed bridges tend to rotate due to the pounding between the deck and its abutments or adjacent frames. The rotations increase the transverse displacements leading to transverse unseating of the superstructure. Because skewed bridges have different stiffnesses and strengths depending upon the orientation of the axes along which the properties are determined, an accurate estimation of the transverse demand is connected to determination of the directionality of the transverse response. This in turn is associated to the predominant direction of the transverse mode of vibration. In this research, ambient vibration tests were conducted at two skewed bridges with integral abutments located in British Columbia, Canada. This paper presents the results of the system identification for the transverse direction and how these have been used to illustrate that the predominant direction of transverse response occurs in the azimuth of the skewed bents. For the case of integral abutment bridges, this paper provides experimental support for the recommendations to define the directions of maximum displacement response contained in AASHTO-2009 [1].
Directionality in the Transverse Response of Skewed Multi-Span Bridges with Integral Abutments
Skewed bridges tend to rotate due to the pounding between the deck and its abutments or adjacent frames. The rotations increase the transverse displacements leading to transverse unseating of the superstructure. Because skewed bridges have different stiffnesses and strengths depending upon the orientation of the axes along which the properties are determined, an accurate estimation of the transverse demand is connected to determination of the directionality of the transverse response. This in turn is associated to the predominant direction of the transverse mode of vibration. In this research, ambient vibration tests were conducted at two skewed bridges with integral abutments located in British Columbia, Canada. This paper presents the results of the system identification for the transverse direction and how these have been used to illustrate that the predominant direction of transverse response occurs in the azimuth of the skewed bents. For the case of integral abutment bridges, this paper provides experimental support for the recommendations to define the directions of maximum displacement response contained in AASHTO-2009 [1].
Directionality in the Transverse Response of Skewed Multi-Span Bridges with Integral Abutments
Conf.Proceedings of Society
Caicedo, J.M. (editor) / Catbas, F.N. (editor) / Cunha, A. (editor) / Racic, V. (editor) / Reynolds, P. (editor) / Salyards, K. (editor) / Catacoli, Seku (author) / Ventura, Carlos E. (author) / McDonald, Steve (author)
2012-03-06
5 pages
Article/Chapter (Book)
Electronic Resource
English
Directionality in the Transverse Response of Skewed Multi-Span Bridges with Integral Abutments
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