SOIL IMPROVEMENT PILE

PURPOSE:To reinforce a bearing capacity of a foundation ground in a soft ground by enveloping an outer peripheral surface of large-sized gravel piles prepared under a post of a structure with a material having a specified strength and durability. CONSTITUTION:With an earth drilling machine or the li...

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Bibliographic Details
Main Author HAMAZUKA SEIJI
Format Patent
LanguageEnglish
Published 21.10.1994
Edition5
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:PURPOSE:To reinforce a bearing capacity of a foundation ground in a soft ground by enveloping an outer peripheral surface of large-sized gravel piles prepared under a post of a structure with a material having a specified strength and durability. CONSTITUTION:With an earth drilling machine or the like, a pile hole 2 is excavated in a soft ground A under a post where the load of a structure is concentrated. A bag-attached cage 5 made of a mesh sheet is mounted to a reinforcing bar frame 3 and inserted into the pile hole 2. Then, gravels 6 are filled in the cage 5, thereby building a gravel pile. A gravel mat 7 is spread to a foundation where blind concrete is cast on the mat 7, thereby building up a structural skeleton B in the order of a pressure resistant board 8 and an underground beam 9 and the foundation. Then, when this is aplied to a soft cohesive soil gound, if the other part which excludes a soil improvement pile sinks, the load is concentrated on the gravel pile made of large-sized gravels 6 so that the gravel pile 6 is bulged horizontally so that it may work again as a direct foundation as a whole and stabilize the foundation ground gradually. This construction makes it possible to reinforce a bearing capacity of the foundation ground.
Bibliography:Application Number: JP19930082026