LOW STRENGTH SAND PILE CONSTRUCTION METHOD

To provide a low strength sand pile construction method preventing collapse of a sand pile due to excavation even in a zone where a post construction work such as excavation for a new pile construction is performed.SOLUTION: A low strength sand pile construction method comprises a I step of penetrat...

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Main Authors TAKADA HIDENORI, YOSHIOKA MASAHIRO, NAKAMURA MITSUO, ITO TAKESHI, YOSHIDA HAJIME, NUMAMOTO DAIKI, WATANABE EIJI, HASHIMOTO NORIYUKI
Format Patent
LanguageEnglish
Japanese
Published 26.09.2022
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:To provide a low strength sand pile construction method preventing collapse of a sand pile due to excavation even in a zone where a post construction work such as excavation for a new pile construction is performed.SOLUTION: A low strength sand pile construction method comprises a I step of penetrating a hollow pipe filled with improvement material into a specific depth and a II step of discharging the improvement material in the hollow pipe by drawing the hollow pipe by an appropriate length to construct a low strength sand pile in the ground to be improved. The improvement material is a mixed material including sand pile material and solidification material, and uniaxial compressive strength of the low strength sand pile is 100 to 1,500 kN/m2.SELECTED DRAWING: None 【課題】新設杭などの掘削を行う後工事を行う区画であっても、掘削による砂杭の崩落がない低強度砂杭造成方法を提供すること。【解決手段】改良材料が充填された中空管を所定の深度まで貫入するＩ工程と、中空管を適宜の長さ引き抜き該中空管内の改良材料を排出するＩＩ工程とを有し、改良対象地盤中に低強度砂杭を造成する方法であって、改良材料は、砂杭材料と固化材を含む混合材料であり、該低強度砂杭の一軸圧縮強さが１００～１,５００ｋＮ/ｍ２である。【選択図】なし
Bibliography:Application Number: JP20210038499