RESEARCH ARTICLE
The Stress-related related Damping Ratio of Box Girder with Corrugated Steel Web
Pengfei Li, Baodong Liu*, 1, 2, Bo Li, Minghzhe Yang
Article Information
Identifiers and Pagination:
Year: 2014Volume: 8
First Page: 301
Last Page: 306
Publisher ID: TOCIEJ-8-301
DOI: 10.2174/1874149501408010301
Article History:
Received Date: 7/5/2014Revision Received Date: 29/8/2014
Acceptance Date: 30/8/2014
Electronic publication date: 30/10/2014
Collection year: 2014
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
In this paper, the stress-related damping ratio formula of box girder with corrugated steel webs is introduced. Using response spectrum method, an iterative algorithm is proposed to calculate the seismic response and the stress-related damping ratio under different seismic intensities. Based on a simply supported composite box girder bridge with corrugated steel webs, the stress-related damping ratios are calculated under different seismic intensities through iteration. The analysis and comparison show that the stress-related damping ratio increased with the seismic intensity, which is smaller than 0.05 under the lower seismic fortification intensity, and larger than 0.05 under the higher seismic intensity. Different damping ratios should be considered under different seismic intensities for the seismic response analysis of the bridge.