PURPOSE: To offer a guide pipe used in the case when a compaction pile used for increasing point bearing force thereof is penetrated into the point ground (hole bottom ground) in construction of a cast-in-place concrete pipe and an underground continuous wall.
CONSTITUTION: A mesh 3 capable of passing and sucking up slime 2 settled at an excavated hole bottom and having a sieve 3a with size incapable of passing aggregate of concrete is mounted to the front opening of a guide pipe 4. The mesh 3 is so constituted that it can be broken through by the penetration of a compaction pile 1. Besides the compaction pile 1 can be penetrated into the front ground to exhibit the effect of compaction, the guide pipe can be used for secondary treatment removing surely the slime 2 settled at the excavated hole bottom, a bad influence caused by the slime is dissolved to increase point bearing force, and it contributes construction of a cast-in-place concrete pile, etc., having strong point bearing force and construction of a structure having high execution efficiency, quality and reliability.
KAKURAI MASAAKI
YAMASHITA KIYOSHI
TSUCHIYA TOMIO
YAMADA TAKESHI
FUKUHARA TAKUHEI
TAKENAKA DOBOKU
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