Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Monitoring of longitudinal cracks in an empirically designed reinforced concrete bridge deck

Monitoring of longitudinal cracks in an empirically designed reinforced concrete bridge deck Full-depth longitudinal cracks have been developed in many empirically designed bridge decks. Such cracks run along the entire length of the bridge over the top flange edges. Star City Bridge is among those bridges that developed longitudinal deck cracking. The bridge was instrumented with 750 sensors during its second phase of construction in November 2003 and the longitudinal cracks were visible on the deck surface in 2005. Therefore, additional twelve sensors were installed across the cracks in June 2007 to continuously monitor their opening and closure as well as the differential settlement across the cracks. The collected data indicate that some cracks have continued to open. In particular the crack along the first interior girder at the edge bay developed a permanent opening of 0.25 mm and a permanent settlement of 0.08 mm. The opening of the longitudinal cracks was correlated to the lateral bending of the steel girders, which adversely affect their flexural capacity as well as the axial stresses in the transverse steel rebar and diaphragm members. Additionally, the presence of the longitudinal cracks induce shear stress in the transverse steel rebar due to the passage of traffic loading that would affect their fatigue life. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bridge Structures IOS Press

Monitoring of longitudinal cracks in an empirically designed reinforced concrete bridge deck

Loading next page...
 
/lp/ios-press/monitoring-of-longitudinal-cracks-in-an-empirically-designed-Htzmb29amk

References (15)

Publisher
IOS Press
Copyright
Copyright © 2011 by IOS Press, Inc
ISSN
1573-2487
eISSN
1744-8999
DOI
10.3233/BRS-2011-029
Publisher site
See Article on Publisher Site

Abstract

Full-depth longitudinal cracks have been developed in many empirically designed bridge decks. Such cracks run along the entire length of the bridge over the top flange edges. Star City Bridge is among those bridges that developed longitudinal deck cracking. The bridge was instrumented with 750 sensors during its second phase of construction in November 2003 and the longitudinal cracks were visible on the deck surface in 2005. Therefore, additional twelve sensors were installed across the cracks in June 2007 to continuously monitor their opening and closure as well as the differential settlement across the cracks. The collected data indicate that some cracks have continued to open. In particular the crack along the first interior girder at the edge bay developed a permanent opening of 0.25 mm and a permanent settlement of 0.08 mm. The opening of the longitudinal cracks was correlated to the lateral bending of the steel girders, which adversely affect their flexural capacity as well as the axial stresses in the transverse steel rebar and diaphragm members. Additionally, the presence of the longitudinal cracks induce shear stress in the transverse steel rebar due to the passage of traffic loading that would affect their fatigue life.

Journal

Bridge StructuresIOS Press

Published: Jan 1, 2011

There are no references for this article.