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The Characteristics of Structural Behavior of Temporary Bridge Using Continuous Cross Beam

일체형 가로보를 이용한 임시교량의 구조적 거동특성

  • Received : 2012.03.20
  • Accepted : 2012.09.25
  • Published : 2012.10.27

Abstract

Cross-beam in the existing temporary bridge system is usually installed to prevent the lateral-torsional buckling of girders and to promote the construction efficiency. However, most of this cross-beams are connected to the girder web by bolts, and therefore, gravitational load resisting capacity of the cross-beams are negligibly small. In recent years, new temporary bridge system, in which the cross-beams and girders are connected to resist the external loads as a unit, was developed. In this paper, we present the experimental and analytical study results pertaining to the structural behavior and load carrying capacity of new temporary bridge system. From the results of study, it was found that the continuous cross-beam increased the flexural rigidity and reduced the maximum flexural stress in the girder. In addition, it was also found that the new temporary bridge system developed is more appropriate for the application in the long-span temporary bridge.

Keywords

temporary bridge;continuous cross beam;load carrying capacity;lateral distribution;structural behavior

References

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