A Restoration of railway Bridge Suffered from Earthquake using Reinforced Concrete Construction with Steel Pipes
By H. Omoto, T. Watanabe, K. Hayashi and S. Ushijima
Concrete Journal, Vol.34, No.10, Oct. 1996
- Synopsis
- On the temporary restoration work of railway bridge hit by a Great Hanshin Earthquake, steel pipe piles were placed to the track on embankment and then the pedestals for temporary pre-cast concrete girder was set on the piles, aiming at hastening to restart running of train. On the permanent restoration work, RC pier including the steel pipes, which used at the temporary restoration work, as a part of reinforcing steels was constructed. The RC pier including the steel pipes was designed by critical state design method with dynamic analysis. Andmodel experiment of the pier reduced a scale of 1 to 5.75 was carried out to confirm the deformation efficiency of the pier. While, on the construction work, adhesion of joint and excellent compactability were required, because of the inverted concrete was placed. Therefor, self-compacting concrete was applied to stud of the pier. The self-compacting concrete of 1000m3 was placed to the 18 studs, and the construction of these studs were finished during 3 months and a half.
- Keywords:
- earthquake disaster restration, railway bridge, steel pipe pile, composite structure,self-compacting concrete, earthquake resisting
