JPS59154222A - Removal of existing pile by earth drill - Google Patents

Abstract

PURPOSE:To easily pull out an existing pile by eliminating friction between the pile and soil by a method in which a casing bucket whose lower end is fixed with an annular blade is penetrated into the surrounding of the existing pile and then drawn out. CONSTITUTION:A casing bucket 3 whose lower end is fixed with an annular blade 7 is hung on the tip of the kelley bar 2 of an earth drill excavator 1. The casing bucket 3 is penetrated into the surrounding ground of foundation piles 8 and 9 driven while charging water into the surrounding ground, and the casing bucket 3' is connected to the preceding casing bucket 3 by using connecting metals 10 until the whole of the pile is covered by the casing bucket 3. Afterwards, the casing buckets 3 and 3' are drawn out, and the piles 8 and 9 can thus be easily drawn out because the friction between the piles 8 and 9 and soil becomes smaller.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing piles from a foundation pile driven into the soil, ie, concrete pile 1.

The first object of the present invention is to handle foundation piles of old buildings without vibration and noise.

In order to achieve the above object, the present invention is constructed as follows.

Take the 17-ging hag with the annular blade fixed to the lower end into the earth drill excavator, pour water around the existing driven pile, and insert the casing hag to eliminate friction between the pile and the mud. , After the insertion is completed, the casing brushes 1 to 1 are removed, and the corresponding replacements are pulled out.

The drawing shows an actual example of the construction method for removing existing piles related to this Komei. Hang 3 to the bucket 1. 4 is the cap of the caging packet 3, 5 is the motor and the shaft 6 that suspends the bucket 1~
3 and 7 for rotating are attached to the lower end of the brushing brush 1-3. :, the annular blade, ε3.9, is driven into the upper part or supported by the foundation pile, and the casing baffle is suspended in the state of 1 Figure 7J < (8).
・Insert 33 while pouring water around the 1A foundation pile 8.9 inserted in (1-:3 >no'). Would you like some water immediately? −
Insert the casing baffler l-3 one by one just as the
) Using the connecting fittings 10, add and insert the casing bucket 3' until it covers the reinforcement, and after step A, remove the casing buckets 3' and 3.

In this way, the friction between the piles 8 and 9 with the mud is reduced. First, the upper pile 8 is suspended from the tangle 1i-C with the floe 11,
flD), ([Mi)Refer to 9 Next, insert the shaft +16, grab the stake 9 with the clamping tool 12 at the end as shown in (-), and pull it out as shown in (G), and then remove the three [If there is 1, it will be removed in the same way.

According to the present invention, the driven resistor can be pulled out without giving a single rotational movement. In particular, since no noise is emitted during the pulling operation, there is no pollution, and by changing the size of the casing bucket, even objects with different diameters can be removed without any problem.

[Brief explanation of the drawing]

The drawing is an explanatory view of an embodiment of the method for removing existing piles using an earth drill according to the present invention. 1...j'-Sdrill excavator, 3.3'...Casing baffler 1~. 7. Annular blade, 8.9. Foundation pile. Patent applicant: Ushiyo ``Gyo Co., Ltd. 1-1 Agent: Patent attorney Izawa Inu. (Method) - Choharu ``t: Neyu 111 - Old Showa '5g'l
i [6J-16th Special ifF Agency Director Kazudai Wakasugi 1, Indication of the incident 11r (phase 1) -Relationship with F method 3, person subject to correction A'1 1) Detection 1911 person name -
1981 iL' J month 11
``Contents of 1 (Object of 3, Supplement ii 1, brief description of detailed drawings and Figure 1 fii, 7, Supplement j]''91>'

Claims (1)

[Claims] Attach the casing bucket 1- with the annular blade fixed to the lower end to the earth drill excavator 1: Jlr, insert it into the casing bucket 1 while pouring water around the existing driven pile to eliminate friction between the pile and the mud. A method for removing existing piles using an earth drill, which is characterized in that after the insertion is completed, the caging bucket 1~ is handled and the 1-hole contact is pulled out.