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Design Procedure of Stress Ribbon Pedestrian Bridges

스트레스 리본 보도교의 설계절차

  • 한기장 (공주대학교 건설환경공학부) ;
  • 최영구 ((주)유일브릿지솔루션) ;
  • 박경룡 ((주)디에스글로벌이엔씨) ;
  • 김기동 (공주대학교 건설환경공학부)
  • Received : 2013.04.22
  • Accepted : 2013.05.09
  • Published : 2013.05.31

Abstract

A stress ribbon pedestrian bridge is the structure in which the axial force of prestressed deck, which is developed by introducing prestressed force into the thin deck with the very low value of span to deck-depth ratio which is installed on bearing cables with the specified sag, resists most of external loadings. Since the design of stress ribbon pedestrian bridges should be conducted by assuming the cross-section of deck, the area of bearing cables and post-tensioning cables, and the prestressed force of post-tensioning cables, it requires much more iterative processes than the design of general bridges. In this research, to minimize such iteration processes, regression equations which can reasonably assume the area of bearing cables and post-tensioning cables, and the prestressed force of post-tensioning cables, are suggested for the bridge length of 80m with the sag-span ratios of 1/30, 1/40, and 1/50.

Keywords

Concrete deck;Efficient Design Procedure;Prestressed force;Regression equations;Stress Ribbon Bridges

Acknowledgement

Supported by : 국토교통부

References

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