Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
GROUND IMPROVEMENT METHOD JUST UNDER EXISTING STRUCTURE
PROBLEM TO BE SOLVED: To reduce construction cost of ground improvement work, and to shorten even its construction period, by eliminating an improvement in the ground of an unnecessary place except for just under an existing structure, by establishing a plurality of wall-like solidification improvement bodies juxtaposed in parallel from both left-right sides just under the existing structure, when improving the ground just under the existing structure.SOLUTION: In a ground improvement method just under an existing structure, a pipe rod 2 is inserted up to the predetermined depth in the ground by a construction machine, and after insertion, a hardener is injected in the lateral direction from an injection nozzle 24 provided in the pipe rod 2, and injection of this hardener is executed upward while extracting the pipe rod 2, and a wall-like solidification improvement body T is established in the ground, and establishment of the wall-like solidification improvement body T is executed from both left-right sides of left-right one side of an existing structure and the left-right other side being its opposite, and a plurality of the wall-like solidification improvement bodies T are established side by side in parallel so as to be laterally opposed in the respective grounds on both left-right sides just under the existing structure.SELECTED DRAWING: Figure 13
【課題】既設構造物直下の地盤を改良する際、既設構造物直下に左右両側から平行に並べた複数の壁状の固結改良体を造成することで、既設構造物直下以外の不必要な場所の地盤を改良するのをなくし、地盤改良工事の工費を安価に、その工期も短縮する。【解決手段】施工機械にて管ロッド２を地盤中の所定深度まで挿入し、挿入後、管ロッド２に設けた噴射ノズル２４から硬化材を横方向に噴射し、この硬化材の噴射を管ロッド２を引き抜きながら上方に向かって行うことにより、地盤中に壁状の固結改良体Ｔを造成すると共に、この壁状の固結改良体Ｔの造成を、既設構造物の左右一方側とその反対である左右他方側との左右両側から行うことにより、既設構造物直下の左右両側それぞれの地盤中に左右向かい合うように複数の壁状の固結改良体Ｔを平行に並べて造成する既設構造物直下における地盤改良方法である。【選択図】図１３
GROUND IMPROVEMENT METHOD JUST UNDER EXISTING STRUCTURE
PROBLEM TO BE SOLVED: To reduce construction cost of ground improvement work, and to shorten even its construction period, by eliminating an improvement in the ground of an unnecessary place except for just under an existing structure, by establishing a plurality of wall-like solidification improvement bodies juxtaposed in parallel from both left-right sides just under the existing structure, when improving the ground just under the existing structure.SOLUTION: In a ground improvement method just under an existing structure, a pipe rod 2 is inserted up to the predetermined depth in the ground by a construction machine, and after insertion, a hardener is injected in the lateral direction from an injection nozzle 24 provided in the pipe rod 2, and injection of this hardener is executed upward while extracting the pipe rod 2, and a wall-like solidification improvement body T is established in the ground, and establishment of the wall-like solidification improvement body T is executed from both left-right sides of left-right one side of an existing structure and the left-right other side being its opposite, and a plurality of the wall-like solidification improvement bodies T are established side by side in parallel so as to be laterally opposed in the respective grounds on both left-right sides just under the existing structure.SELECTED DRAWING: Figure 13
【課題】既設構造物直下の地盤を改良する際、既設構造物直下に左右両側から平行に並べた複数の壁状の固結改良体を造成することで、既設構造物直下以外の不必要な場所の地盤を改良するのをなくし、地盤改良工事の工費を安価に、その工期も短縮する。【解決手段】施工機械にて管ロッド２を地盤中の所定深度まで挿入し、挿入後、管ロッド２に設けた噴射ノズル２４から硬化材を横方向に噴射し、この硬化材の噴射を管ロッド２を引き抜きながら上方に向かって行うことにより、地盤中に壁状の固結改良体Ｔを造成すると共に、この壁状の固結改良体Ｔの造成を、既設構造物の左右一方側とその反対である左右他方側との左右両側から行うことにより、既設構造物直下の左右両側それぞれの地盤中に左右向かい合うように複数の壁状の固結改良体Ｔを平行に並べて造成する既設構造物直下における地盤改良方法である。【選択図】図１３
GROUND IMPROVEMENT METHOD JUST UNDER EXISTING STRUCTURE
既設構造物直下における地盤改良方法
NEGISHI YASUAKI (Autor:in) / NITAO HIROSHI (Autor:in) / OKADO MASANORI (Autor:in) / ITO TAKESHI (Autor:in) / TANAKA HATSUICHI (Autor:in) / AKIMA TAKESHI (Autor:in)
07.09.2017
Patent
Elektronische Ressource
Japanisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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