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仮締切兼用鋼管矢板井筒工法

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.5 (1973) No.1

仮締切兼用鋼管矢板井筒工法 Steel Pipe Piled Well Method

肱 黒 和 彦(Kazuhiko Hijikuro) 嶋 文雄(Fumio Shima) 佐野 忠行(Tadayuki Sano) 要旨 : 本工法は構造物の基礎本体である鋼管矢板井筒を構成する鋼管矢板をそのまま水面上まで 立上げ,適当な止水処理を行なって仮締切壁として兼用する工法である。本工法によれば 基礎構造体として大きな剛性をもち,また施工中の安全性,急速施工性,省力化などのメ リットをもっている。ここでは,本工法の施工法,設計方法について説明し,さらに本工 法運用化にあたり問題点であった仮締切壁の止水性,仮締切部の水中切断,鋼管矢板,フ ーチングの接合方法についての各種実験を行ない本工法を確立した経緯について述べる。 Synopsis :

The characteristics of this engineering method are a double purpose utilization of steel pipe piles; the one for foundation structure, and the other for interim cofferdam, as can be performed by leaving the top portions of the steel pipe piles sufficiently high above the water surface and giving some proper water-cutting treatment. The engineering method features safety and speediness during the construction and a large rigidity as foundation structure. This report outlines the construction and designing of the method, and some problems in the application of the method. It also relates the background of the method based on various experiments covering water-tightness of the cofferdam, under-water cutting of the cofferdam and the footing connecting method of steel pipe piles.

(c)JFE Steel Corporation, 2003

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