Experimental Study of Anchor Zone of Externally Prestressed Segmental Bridge

현장 실험을 통한 상판분절 P.C 교량의 정착부 응력 분석

  • 이성우 (국민대학교 공과대학 토목환경공학과) ;
  • 배두병 (국민대학교 공과대학 토목환경공학과) ;
  • 지기환 (국민대학교 구조안전연구소 연구원) ;
  • 정남석 (국민대학교 공과대학 토목환경공학과)
  • Published : 1994.10.01

Abstract

During the construction of externally prestressed 7-span continuous segmental bridge, cracks beyond permissible limit were found at anchor zone of expansion joint segment. To eliminate this problem, tension side of diaphragm was prestressed by post-tensioning bars in vertical and horizontal direction. To investigate this remedy is acceptable, stresses of reinforcing bars and concrete surface were measured for the real structure in the field. The measurement was performed through each step of prestressing sequence during construction. Also to investigage stresses induced by live load, static load test was performed and the results was analyzed. In this paper it will be presented the procedure and results for this experimental study along with comparison with analytical study.

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