PILE HEAD TREATMENT METHOD

To provide a pile head treatment method for dismantling an extra-banking concrete of an on-site construction pile, which does not require the work of scraping the side surface of the on-site construction pile and prevents the generation of noise and vibration.SOLUTION: In a pile head treatment metho...

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Main Authors UEKI KAZUYUKI, ISHIMARU TATSURO, MATSUOKA AKIHIKO, YAMAZAKI TERUJI, EGUCHI SATOSHI, SUZUKI SHINYA, TAKAHASHI KAZUKI, OGURA HIROSHI, IDO YASUHIRO
Format Patent
LanguageEnglish
Japanese
Published 24.09.2021
Subjects
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:To provide a pile head treatment method for dismantling an extra-banking concrete of an on-site construction pile, which does not require the work of scraping the side surface of the on-site construction pile and prevents the generation of noise and vibration.SOLUTION: In a pile head treatment method, a refrigeration pipe 13 embedded in concrete in advance is frozen and expanded to generate a crack, and an extra banking concrete part 12 of an on-site construction pile 11 is removed using the cracked part as a boundary. The refrigeration pipe is fixed to a pile bar 14 or a fixing hoop 15 of the on-site construction pile via a fixing reinforcing bar 16, and raises a refrigerant pipe 17 for injecting low temperature liquefied gas into the refrigeration pipe above the extra banking concrete part.SELECTED DRAWING: Figure 1 【課題】現場造成杭の側面を斫り出す作業が無く、騒音や振動の発生を防止した、現場造成杭の余盛コンクリートを解体処理する杭頭処理工法を提供する。【解決手段】現場造成杭１１の余盛コンクリート部分１２を、予めコンクリート中に埋設させた冷凍管１３を凍結膨張させてひび割れを発生させ、そのひび割れ部分を境にして撤去する杭頭処理工法であって、冷凍管は、現場造成杭の杭主筋１４又は固定用フープ１５に対して固定用鉄筋１６を介して固定し、冷凍管に低温液化ガスを注入するための冷媒管１７を余盛コンクリート部分の上部に立ち上げてある。【選択図】図１
Bibliography:Application Number: JP20200044003