A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROBLEM TO BE SOLVED: To provide an improved columnar earth-retainer that effectively utilizes tensile strength, among properties of a steel material, for resisting against bending tensile force exerted on the improved columnar earth-retainer, at the same time offering higher safety against bending caused by lateral pressure and higher total cost effectiveness compared to conventional earth retainers.SOLUTION: An earth retainer is of a column row wall-form constructed by overlapping a plurality of adjacent columnar improvement bodies along an excavated area, the columnar improvement body being constructed by a deep mixing method. All or a part of the plurality of columnar improvement bodies has an H-section or I-section steel material embedded in an orientation to resist lateral pressure from a surrounding ground of the excavated area, the steel material having a length to reach from a head part to an embedment part of the columnar improvement body. The steel material is embedded integrally in the columnar improvement body, in an eccentric state that a flange on a side comes closer to the surrounding ground. Furthermore, the steel material has tensile strength to resist bending tensile force generated on the columnar improvement body by the lateral pressure.SELECTED DRAWING: Figure 1
【課題】鋼材が有する特性のうち、その引張耐力によって柱状改良体の曲げ引張力に抵抗する構造として、側圧によって生じる曲げに対しての安全性を高めると共に、従来の山留めよりもトータルコストで有利な柱状改良山留めを提供する。【解決手段】深層混合処理工法によって構築される複数本の柱状改良体を掘削域沿いに隣り合う同士オーバーラップさせて造成する柱列壁状の山留めであって、前記複数本の柱状改良体の全部又は一部には、その内部に、Ｈ形又はＩ形の鋼材が当該柱状改良体の頭部から根入れ部に達する長さを有して、前記掘削域の周囲地盤からの側圧に抗する向きに埋設されており、前記鋼材は、片側のフランジが前記周囲地盤に近接する偏心状態で前記柱状改良体に一体的に埋設されており、且つ、前記側圧によって前記柱状改良体に生ずる前記周囲地盤側の曲げ引張力に抵抗する引張耐力を有している。【選択図】図１
PROBLEM TO BE SOLVED: To provide an improved columnar earth-retainer that effectively utilizes tensile strength, among properties of a steel material, for resisting against bending tensile force exerted on the improved columnar earth-retainer, at the same time offering higher safety against bending caused by lateral pressure and higher total cost effectiveness compared to conventional earth retainers.SOLUTION: An earth retainer is of a column row wall-form constructed by overlapping a plurality of adjacent columnar improvement bodies along an excavated area, the columnar improvement body being constructed by a deep mixing method. All or a part of the plurality of columnar improvement bodies has an H-section or I-section steel material embedded in an orientation to resist lateral pressure from a surrounding ground of the excavated area, the steel material having a length to reach from a head part to an embedment part of the columnar improvement body. The steel material is embedded integrally in the columnar improvement body, in an eccentric state that a flange on a side comes closer to the surrounding ground. Furthermore, the steel material has tensile strength to resist bending tensile force generated on the columnar improvement body by the lateral pressure.SELECTED DRAWING: Figure 1
【課題】鋼材が有する特性のうち、その引張耐力によって柱状改良体の曲げ引張力に抵抗する構造として、側圧によって生じる曲げに対しての安全性を高めると共に、従来の山留めよりもトータルコストで有利な柱状改良山留めを提供する。【解決手段】深層混合処理工法によって構築される複数本の柱状改良体を掘削域沿いに隣り合う同士オーバーラップさせて造成する柱列壁状の山留めであって、前記複数本の柱状改良体の全部又は一部には、その内部に、Ｈ形又はＩ形の鋼材が当該柱状改良体の頭部から根入れ部に達する長さを有して、前記掘削域の周囲地盤からの側圧に抗する向きに埋設されており、前記鋼材は、片側のフランジが前記周囲地盤に近接する偏心状態で前記柱状改良体に一体的に埋設されており、且つ、前記側圧によって前記柱状改良体に生ずる前記周囲地盤側の曲げ引張力に抵抗する引張耐力を有している。【選択図】図１
IMPROVED COLUMNAR EARTH-RETAINER
柱状改良山留め
YAMADA KATSUYA (author)
2018-03-08
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
CONSTRUCTION METHOD OF EARTH RETAINER WALL AND EARTH RETAINER WALL
| European Patent Office | 2017
EARTH RETAINER WALL AND CONSTRUCTION METHOD OF EARTH RETAINER WALL BY BERLINOISE METHOD
| European Patent Office | 2017
CONSTRUCTION METHOD OF EARTH-RETAINER AND UNDERGROUND STRUCTURE
| European Patent Office | 2018