GROUND IMPROVEMENT METHOD

PROBLEM TO BE SOLVED: To provide a ground improvement method capable of ensuring necessary strength of an underground wall made of underground consolidated body that is established using a borehole even if the drilled borehole for establishing the underground consolidated body is inclined to a verti...

Full description

Saved in:
Bibliographic Details
Main Authors TSUCHIYA TSUTOMU, KUMEGAWA MASANORI
Format Patent
LanguageEnglish
Japanese
Published 08.09.2016
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
Online AccessGet full text

Cover

More Information
Summary:PROBLEM TO BE SOLVED: To provide a ground improvement method capable of ensuring necessary strength of an underground wall made of underground consolidated body that is established using a borehole even if the drilled borehole for establishing the underground consolidated body is inclined to a vertical direction.SOLUTION: An inclination and curve of a drilled borehole is measured and it is determined whether or not a thickness dimension t of an overlapping region CR of adjacent underground consolidated bodies or an overlapping region CR of the underground consolidated body S2 and an underground part of a building structure is equal to or more than a predetermined effective thickness. When the thickness of the overlapping region CR is not equal to or more than the predetermined effective thickness, an improvement diameter of the underground consolidated body S2 is increased.SELECTED DRAWING: Figure 2 【課題】地中固結体造成用のボーリング孔が垂直方向に対して傾斜して切削されても、当該ボーリング孔を用いて造成される地中固結体から構成される地中壁が必要な強度を有する様にせしめることが出来る地盤改良工法の提供。【解決手段】切削したボーリング孔の傾斜、曲がりを計測し、隣接する地中固結体の重複領域ＣＲ或いは地中固結体Ｓ２と建造物の地下部分との重複領域ＣＲの厚さ寸法ｔが所定の有効厚さ以上となるか否かを判断し、当該重複領域ＣＲの厚さ寸法ｔが所定の有効厚さ以上にならない場合には、地中固結体Ｓ２の改良径を増加する。【選択図】図２
Bibliography:Application Number: JP20150044299