JPH02125018A

JPH02125018A - Improvement of pile

Info

Publication number: JPH02125018A
Application number: JP27530088A
Authority: JP
Inventors: Magoji Toyama; 遠山　孫二
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-10-31
Filing date: 1988-10-31
Publication date: 1990-05-14

Abstract

PURPOSE:To prevent a pile from descending by forming 'U' formed grooves, inclined in the relatively crosswise state, on the upper circumferential surface of the tip of the one end of a cylindrical rod formed pile and providing a soil layer insertion hole at the bottom end so as to form an 'X' form, thereby cutting into the peripheral surface of the soil layer at the tip of the pile and in the 'U' form of the inclined grooves. CONSTITUTION:Inclined grooves 2 provided with earth insertion holes 1 at one ends inclined in the relatively lateral state are provided on the 'U' formed upper circumferential surface of the lower part of the tip of a pile 4 as well as a hollow hole 5 is provided at the pile 4 with 'U' formed grooves 3. The pile 4 is erected, driven in by the impact of the vertical movement of the hammer of an upright driving machine onto the earth surface and stopped in an appropriate position. Each time the pile 4 descends, the peripheral surface is inserted into the inclined 'U' formed groove 3 receiving the pressure of the earth as well as upward pressure is acted upon the soil layer driven to the earth insertion hole 1 simultaneously. The soil layer is compressed by this pressure, expanded while becoming hard soil, and stops supportingly on the soil layer surface in the form of bonded X. As a result, the pile is prevented from descending by utilizing the pressure flowing into the 'U' formed grooves.

Description

【発明の詳細な説明】本装置を実施する場合従来のパイル尖端部下方Ｖ形の上
部円周表面に、相対左右に傾斜状一端土地挿入口１を設
けた傾斜溝２を、Ｕ字形溝３となすパイル４に中空孔５
を設はパイル４を、土地面に直立打込機の鑓を上下して
衝撃で打込み適当の位置で停止するときはパイルは下降
するごとに外周表面に土地の圧力を受は傾斜Ｕ形溝内に
揮入すると同時にご端の土地挿入口１に進入せられた土
層に上方向圧力が作用して、Ｕ形溝に流入する圧力で土
層は圧縮せられて硬土となり膨らみ土層面に接着Ｘ形状
で支持停止するので、パイルの尖端と傾斜溝内のＵ形内
の土層はパイルの打込停止で突出外周面に喰込み接着し
て、下降を防止する効果特徴がある。DETAILED DESCRIPTION OF THE INVENTION When implementing the present device, an inclined groove 2 having an inclined land insertion opening 1 at one end on the left and right sides is formed on the upper circumferential surface of the V-shaped lower end of a conventional pile, and a U-shaped groove 3 Hollow hole 5 in the pile 4
The pile 4 is set up on the land surface by raising and lowering the hammer of the driving machine with an impact, and when it stops at the appropriate position, the pile receives the pressure of the land on the outer circumferential surface each time it descends, and creates an inclined U-shaped groove. At the same time, upward pressure acts on the soil layer entered into the land insertion port 1 at the end, and the pressure flowing into the U-shaped groove compresses the soil layer and turns it into hard soil, which swells and the surface of the soil layer. Since the pile is supported and stopped in an X-shape by adhesion, the tip of the pile and the soil layer within the U-shape in the sloping groove bite into and adhere to the protruding outer peripheral surface when the pile stops driving, which has the effect of preventing it from falling.

[Brief explanation of the drawing]

１１１図は本装置のパイルの側面図第２図はＸ形の溝部
をＡ　Ａ　１　”ｅ、横新して示す平面図である。Fig. 111 is a side view of the pile of the present device. Fig. 2 is a plan view showing the X-shaped groove portion A A 1 ''e, horizontally oriented.

Claims

[Claims]

A pile improvement device in which a cylindrical pile has an X-shape in which a U-shaped groove is formed on the upper circumferential surface of the tip of one end of the pile, and a soil layer insertion opening is provided at the lower end of the pile.