Multiple-Spring Model for Square-Section Steel Bridge Columns under Bidirectional Seismic Load
Publication: Journal of Structural Engineering
Volume 143, Issue 5
Abstract
In this study, the multiple-spring (MS) model with the curve-approximated hysteresis rule is proposed for the nonlinear seismic response simulation of bidirectionally loaded hollow square-section steel columns such as cantilever type steel piers. To represent the nonlinear hysteresis behavior of the column, an effective and simple optimization procedure is introduced to identify the free parameters of the model. A parameter determination approach for approximate modeling in preliminary design calculations is also introduced. The results of quasi-static and pseudodynamic tests using bidirectional loading are compared with the simulation results to verify the accuracy of the proposed model. The proposed method is shown to be advantageous in achieving accurate simulation of the seismic response of a bridge model involving bidirectionally loaded steel columns, especially the hysteretic force-displacement relationship and time history of the dynamic response.
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Published In
Journal of Structural Engineering
Volume 143 • Issue 5 • May 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Apr 15, 2016
Accepted: Oct 27, 2016
Published online: Jan 23, 2017
Published in print: May 1, 2017
Discussion open until: Jun 23, 2017
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