REMOVAL METHOD OF EXISTING STRUCTURE

• Main Authors: UEMURA KENJIRO, YAMASHITA YASUHIKO, UEMURA MAKOTO, MARUTA SHINICHI
• Format: Patent
• Language: English; Japanese
• Published: 28.12.2016
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

PROBLEM TO BE SOLVED: To remove an existing structure safely and speedily without being particularly limited by the relationship of the height and width of both when constructing a new installation structure formed by removing an existing structure and widening the existing structure with respect to the existing structure, and thereby improve a construction speed, etc.SOLUTION: When constructing a new installation structure by removing an existing structure with respect to the existing structure, a box-shaped roof is penetrated and installed in an overall length between the vertical shafts so as to surround the outside of the existing structure from a vertical shaft installed in both sides as protecting work of a construction section, a box-shaped roof row by the box-shaped roof is extruded, and thereby the existing structure surrounded by this box-shaped roof row is punched to the arrival side along with the inside natural ground and dismantled, and the new installation structure is made up in the space after the extrusion.SELECTED DRAWING: Figure 1 【課題】既設構造物に対してこの既設構造物を撤去し、既設構造物を拡幅してなる新設構造物を構築する場合において、両者の高さや幅の関係に特に限定を受けず、既設構造物を安全かつじん速に撤去でき、施工速度等の改善を図ることができる。【解決手段】既設構造物に対してこの既設構造物を撤去し、新設構造物を構築する場合において、施工区間の防護工として両側に設置した立坑より、箱形ルーフを既設構造物の外方を囲むように立坑間の全長に貫通して設置し、箱形ルーフによる箱形ルーフ列を押し出すことで、この箱形ルーフ列で囲む既設構造物を内部地山とともに到達側へ押し抜き、解体し、その押し出し後の空間には新設構造物を補填する。【選択図】 図１