|発明の名称||CONSTRUCTION METHOD FOR ABUTMENT WITH RECONSTRUCTION FOR BRIDGE AND ITS ABUTMENT STRUCTURE|
PROBLEM TO BE SOLVED: To provide a construction method for an abutment with the reconstruction of a bridge extremely inhibiting the increase of the length of the bridge as compared to the old bridge while being capable of strengthening the strength of the abutment in the construction of the abutment with the reconstruction of the bridge and its abutment structure.
SOLUTION: (a) An earth retaining wall 4 is placed to the rear of the existing abutment 2, (b) an excavation at a small stage is conducted and (c) a tensile reinforcing material 5 in which a tensile core material is inserted is driven to the earth retaining wall 4 of an excavating surface. (d) Processes in (b) and (c) are repeated, and a ground is excavated up to a specified depth while the tensile reinforcing material is driven, (e) a foundation pile 6 is installed in a space emptied by the excavation, and (f) the new abutment is constructed by placing abutment concrete so as to be connected to the tensile reinforcing material 5 and the earth retaining wall 4. (g) The existing abutment is removed, and (h) a new girder is stretched over the new abutment.
- 公益財団法人鉄道総合技術研究所 情報管理部 知的財産担当
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