Temperature Analysis of PSC Box-girder Bridges Using Inverse Thermal Analysis Program

온도분포 역해석 프로그램을 이용한 PSC 박스거더 교량 단면의 온도 분포 해석

  • Park, Min-Seok (Korea Highway & Transportation Technology Institute(Department of Civil Engineering, Hanyang University)) ;
  • Jo, Byung-Wan (Department of Civil Engineering, Hanyang University) ;
  • Lee, Myung-Kue (Department of Civil & Environmental Engineering, Jeonju University)
  • 박민석 (한국도로공사 도로교통기술원(한양대학교 토목공학과)) ;
  • 조병완 (한양대학교 토목공학과) ;
  • 이명규 (전주대학교 토목환경공학과)
  • Published : 2006.08.31

Abstract

It is well known that the thermal load in PSC(prestressed concrete) box-girder bridge is the principal cause of detrimental crack. The longitudinal stress caused by the lateral stress from the temperature gradient in slab of PSC box-girder bridge has a considerable influence on the durability and economy of bridge structures. As the basic study for the rational consideration of thermal load and the derivation of design guide, the inverse thermal analysis program for PSC box-girder bridges using field measurement data is developed. In this paper, thermal analyses are performed using field monitoring data for the sample PSC box-girder bridge. It is proposed that the link between monitoring program and the inverse analysis program is available.

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