JPS6282118A - Driving construction for hollow pile - Google Patents

Abstract

PURPOSE:To prevent driving noise and vibration from being propagated outside on driving a pile, by inserting a ram hammer into the penetrating hole of the hollow pile to drive the tap at the tip of the hollow pile, and by driving the hollow pile via cushioning material. CONSTITUTION:A hollow pile 2 with a cap 3 fitted at the tip is inserted into an inserting hole 12. After that, cushioning material 6 is inserted through a ram hammer 4, and the ram hammer 4 is inserted into the penetrating hole 7 of the hollow pile 2: the ram hammer 4 is dropped from a given height, when the lower end 11 of the ram hammer is butted against the cap 3 at the tip. Then, the cap 3 at the tip is driven by the ram hammer 4 in the ground, and driving noise is not propagated onto the ground surface. Besides, the upper end 9 of the hollow pile 1 is driven by a head hammer 5 via the cushioning material 6, and driving noise is absorbed by the cushioning material 6, and vibration is not propagated outside.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to pile driving performed at a construction site, particularly to a hollow pile driving method.

[Conventional technology]

In conventional pile driving work, diesel pile
・There were methods of driving piles by applying impact to the base end of the pile using a hammer or vibrating pile driver, and methods of driving piles by applying continuous vibration.

[Problem that the invention seeks to solve]

However, with this conventional method of driving piles by applying impact, the sound of impact and vibrations caused by the impact when the ram hammer collides with the pile propagate to the vicinity, and with the method of driving piles while applying vibrations, There were problems in that small vibrations were constantly propagated, causing discomfort, etc., and using the fabric in narrow spaces was a nuisance to nearby people, and the pile could be damaged by impact, making management difficult. .

This invention was made in order to solve this problem, and its purpose is to reduce the impact noise and vibrations during pile driving from outside. The purpose of the present invention is to provide a pile driving method that prevents damage from spreading and prevents pile damage, and as a technical means for this purpose, the present invention provides a hollow structure in which a tip cap is removably attached to an insertion hole previously drilled in the ground. A pile is inserted, a ram hammer whose length is suitably longer than the overall length of the hollow pile body is inserted into the through hole of the hollow pile body, a head hammer for driving the hollow pile body is provided on the top of the ram hammer, and a ram hammer and a hollow A cushioning material is inserted between the piles, and the end cap is driven into the ground with the ram hammer to separate it from the hollow pile body to create an appropriate gap.The end cap is used to extend the insertion hole, and the ram hammer is used to extend the insertion hole. The hollow pile body is placed through a cushioning material, and the pile can be inserted to the required depth with low vibration and noise.

[Effect]

Therefore, in the present invention, the ram hammer is formed to be appropriately longer than the hollow pile body, the ram hammer is inserted into the through hole of the hollow pile, the tip cap is driven in, and the tip cap is separated from the hollow pile body by an appropriate distance to extend the insertion hole. Set up

Then, when the base end of the hollow pile main body is driven with a head hammer through the cushioning material, the extended insertion portion is driven by driving the tip end cap. These two driving operations are repeated simultaneously to drive the hollow pile to a predetermined length. During this driving process, the tip cap is driven into the ground, so the sound of the impact is absorbed underground. Also, since the hollow pile is driven through the cushioning material, the impact is absorbed and vibrations are not transmitted to the outside, allowing the pile to be built quietly. Pouring can be carried out.

In addition, since the pile is placed through a cushion, the pile will not be damaged by # strikes.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

The hollow pile used in the hollow pile driving method of this example (
1) is composed of a hollow pile body (2) and a tip cap (3). Further, (4) is a ram hammer, (5) is a helad hammer, and (6) is a cushion material.

The hollow pile body (2) has a through hole (7), and the tip (8) is provided with a tip cap (3) formed in a conical shape from a steel plate.
) is removably attached, and the proximal end (9) is attached with a head hammer (5
) is used as the hitting surface.

Also, the ram hammer f4) has a head hammer +5) on the top.
A crane lifting piece (11) is provided at the upper end, and the base end (ll) of the ram hammer is used as the striking surface of the tip cap (3). (5) and hollow pile body (2)
and the base end (9) of the through hole (7).
) and insert the ram hammer base end (11) into the tip cap (
3) A contact head hammer f51 is provided with a moss gap interval (L).

In addition, (1) is the insertion hole, (+ is the wire rope for lifting earth with a ram hammer. Also, the cushioning material (6) is formed into a donut shape from urethane rubber, etc., and the wire rope (14) is inserted from the head hammer (5). is held in

The hollow pile (1) of this example is fitted with a tip cap (3) and has an insertion hole (1) drilled in advance with an earth auger.
It is inserted into the tip from the tip cap (3) side. Then, insert the cushioning material (6) into the ram hammer (4), insert it into the through hole (7) of the hollow pile 1), drop the ram hammer (4) from a certain height, and drop the ram hammer (4) to the base of the ram hammer. (
11) and collide with the tip cap (3). By repeating this, the tip cap (3) is fixed until the head hammer (5) comes into contact with the cushion material (6), that is, the gap distance (L) between the head hammer (5) and the shoe/-17 material (6) is It continues to be driven until it reaches zero. When this gap interval (L) becomes zero, that is, when the head hammer (5) comes into contact with the cushioning material (6), the tip cap (3) and the tip (8) of the hollow pile body (2) A gap interval (L) is formed. Then, the pouring continues as it is, but the tip cap (3) is hit underground and the impact sound does not reach the ground, so the insertion hole (12) is quietly extended. Also, the hollow pile m is placed at the base end (9 ) is inserted by simply striking it with the head hammer (5) through the shoe/jin material (6).Therefore, the impact from the head hammer (5) is absorbed by the shoe/jin material (6), and the vibration is transferred to the outside. I can't tell until.

Also, since the hollow pile body (2) is hit through the cushioning material (6), the hollow pile body (2) may be damaged.Finally, after driving the hollow pile body (2) to a predetermined depth, the tip It is sufficient to cast only the hollow pile body (2) until there is no gap between it and the cap (3).

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration of the present invention is not limited to the present embodiments, and the present invention may be modified even if there are design changes within the scope of the invention. Included in technical scope.

For example, the tip cap (3) is made of a steel plate and has a conical shape, and the shoe/cone material (6) is made of urethane rubber and has a shape of 7, but the material and shape are not limited. Any material or shape can be selected.

〔Effect of the invention〕

As explained above, according to the present invention, the ram hammer is inserted into the through hole of the hollow pile and hits the tip cap provided at the tip of the hollow pile, so that the impact sound does not reach the ground. Since the impact is made through the cushioning material, vibrations are not transmitted and the pile can be placed quietly. Further, there is an advantage that the pile is not damaged by impact during installation and a highly reliable finish can be achieved.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram of a hollow pile according to an embodiment of the present invention, Fig. 2:
It is an explanatory diagram of i pouring order. (l): Hollow pile (2): Hollow pile body (3
): Tip character 7' (4): Ramuno Nma (5
): Head hammer (6): Cushion material (7): Through hole (1: Insertion hole (L): Gap interval (gap)

Claims (1)

[Claims] 1) Insert a hollow pile with a removably attached tip cap into an insertion hole previously drilled in the ground, insert a ram hammer that is appropriately longer than the overall length of the hollow pile body into the through hole of the hollow pile body, and insert the ram hammer into the through hole of the hollow pile body. A head hammer for driving the hollow pile body is provided at the top of the pile, a cushion material is inserted between the head hammer and the hollow pile, and the end cap is driven into the ground with the ram hammer to separate it from the hollow pile body. An appropriate gap is created, the insertion hole is extended using the same end cap, and the hollow pile body is driven through the cushioning material using the head hammer, so that the pile can be inserted to the required depth with low vibration and low noise. This hollow pile driving method is characterized by: