Fatigue Assessment for Failed Bridge Deck Closure Pour

dc.contributor.authorRivera, Elias Alexanderen
dc.contributor.committeechairWright, William J.en
dc.contributor.committeememberWeyers, Richard E.en
dc.contributor.committeememberRoberts-Wollmann, Carin L.en
dc.contributor.departmentCivil Engineeringen
dc.date.accessioned2014-03-14T20:38:37Zen
dc.date.adate2012-06-13en
dc.date.available2014-03-14T20:38:37Zen
dc.date.issued2012-05-01en
dc.date.rdate2012-06-13en
dc.date.sdate2012-05-25en
dc.description.abstractAfter 17 years in service, a 3 ft by 3 ft closure pour section of an Interstate 81 (I-81) bridge deck failed by punching through near Marion, Virginia. Visual inspection noted that there was considerable corrosion on some of the reinforcing bars in the vicinity of the construction joint, while other failure bars had little or no corrosion. Sections of the bridge deck were cut and delivered to Virginia Tech for further investigation. It was clear from an initial investigation that shrinkage of the deck concrete had caused the construction joints to open and thereby allow water and chlorides to enter the joint. In addition, it was observed that several bars across the closure pour construction joints had suffered significant section loss due to corrosion, but it was not clear if fatigue and strength failure of the reinforcing bars were also contributing factor in the closure pour failure. To study the problem four fatigue tests and five strength tests performed. The specimens included six slab strips cut from the I-81 bridge deck, with the 3-ft closure pour included, and three additional specimens that were cast in the laboratory to represent a base line for performance. A three-point loading setup was used for both fatigue and strength tests. However, for the final strength and fatigue tests, a jacking system was designed and implemented in an effort to open the closure pour construction joints to simulate the open joints of the I-81 bridge. The objectives of this research program are to provide a better understanding of the closure pour failure mechanism, develop inspection procedures for Virginia Department of Transportation (VDOT) to assess its bridge inventory containing similar construction joints, and to develop recommendations for future construction of similar construction joints.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-05252012-135136en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-05252012-135136/en
dc.identifier.urihttp://hdl.handle.net/10919/33242en
dc.publisherVirginia Techen
dc.relation.haspartRivera_EA_T_2012.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectconstruction jointen
dc.subjectreinforcing steelen
dc.subjectclosure pouren
dc.subjectbridge decken
dc.subjectFatigueen
dc.titleFatigue Assessment for Failed Bridge Deck Closure Pouren
dc.typeThesisen
thesis.degree.disciplineCivil Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Rivera_EA_T_2012.pdf
Size:
42.76 MB
Format:
Adobe Portable Document Format

Collections