A study on thermal prestressing method for steel - Concrete composite bridge

Sang Hyo Kim, Jin Hee Ahn, Jun Hwan Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Thermal PreStressing Method(TPSM) is a new design and construction concept for prestressing various types of steel and concrete structures. A new retrofitting method for steel-concrete composite bridge is developed through this study, which is a hybrid method of external post-tensioning and thermal prestressing, combining the merits of the two methods. The proposed method is founded on a simple concept of thermal expansion and contraction of steel. An external prestressing plate, used as a post-tensioning retrofitting device in this method is heated by electric heaters before it is attached to the bridge. When attached using high tension bolts at several points, the heaters are removed, the contraction force of the steel plate applies eccentric axial forces to the section of girder. This paper describes the basic concepts of TPSM, its verification by a parametric study that analyze the effect of Thermal Prestressing Method for steel-concrete composite bridge.

Original languageEnglish
Title of host publicationProceedings of 8th Pacific Structural Steel Conference - Steel Structures in Natural Hazards, PSSC 2007
Pages71-77
Number of pages7
Publication statusPublished - 2007 Dec 1
Event8th Pacific Structural Steel Conference - Steel Structures in Natural Hazards, PSSC 2007 - Wairakei, New Zealand
Duration: 2007 Mar 132007 Mar 16

Publication series

NameProceedings of 8th Pacific Structural Steel Conference - Steel Structures in Natural Hazards, PSSC 2007
Volume1

Other

Other8th Pacific Structural Steel Conference - Steel Structures in Natural Hazards, PSSC 2007
CountryNew Zealand
CityWairakei
Period07/3/1307/3/16

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Kim, S. H., Ahn, J. H., & Kim, J. H. (2007). A study on thermal prestressing method for steel - Concrete composite bridge. In Proceedings of 8th Pacific Structural Steel Conference - Steel Structures in Natural Hazards, PSSC 2007 (pp. 71-77). (Proceedings of 8th Pacific Structural Steel Conference - Steel Structures in Natural Hazards, PSSC 2007; Vol. 1).