JPH0830337B2 - Pile driving method and its equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for driving a pile into the ground by using a vibrating pile driver installed on the ground without using a lifting machine.

[0002]

As is well known, as a method of driving a pile into the ground, for example, a method of applying a striking force to a pile striking portion using a disel hammer, a monken, a hydraulic hammer or an air hammer, or a vibro hammer is used. There are two methods, namely, a vibrating pile driving method in which the peripheral frictional force of the pile is reduced and the pile is driven into the ground.

However, in most of the above methods, it is necessary to install a pile driver on the pile head, which requires a pile stilt or a large crane. This is costly and requires highly skilled operators and workers. On the other hand, in places where there is a sky clearance such as under the bridge and under the overhead railway line, the height of the pile driver, the boom and hook of the crane become dead spaces, and the number of connecting piles increases, resulting in a significant increase in construction efficiency. There was a problem such as the decrease of. Therefore, as shown in Japanese Patent Publication No. 59-28700, for example, the middle part of the pile is gripped by a gripper, and the hydraulic jack is used to press the pile into the ground for the stroke of the jack, and then the pile is left and only the gripper is left. A construction method and device for raising and similarly press-fitting a pile into the ground have been proposed. According to this construction method and device, the problems of the conventional construction method and device described above are solved to some extent, but the pile press-fitting device itself cannot be self-propelled, and the positioning means of the device is not separately considered, Further, since the pile is press-fitted only by the hydraulic jack without giving vibration to the pile, it was necessary to equip the plurality of hydraulic jacks in order to obtain a larger force. In addition, for example
As disclosed in Japanese Patent No. 40541, there is proposed a rail traveling type roadbed improved pile driving machine for improving the roadbed of a railroad track, but this pile driving machine is used in a very special field. In addition, the pile to be driven was short, and the press-fitting cylinder was installed on the head of the pile.

[0004]

SUMMARY OF THE INVENTION Therefore, one of the objects of the present invention is to provide a pile driving method and a pile driving apparatus capable of efficiently driving long piles without using a pile driving tower or a large crane. The other one is a pile driving method and a pile driving apparatus which allow the pile driving apparatus itself to be self-propelled, easily change the pile driving position, and can also easily perform the positioning of the pile driving. To provide.

[0005]

According to the present invention, a pile gripping device provided with a vibration generator is supported by a lifting jack, and a trolley traveling on a rail is self-propelled to the place where the pile is driven, and the trolley is used. Is fixed at a predetermined position with an outrigger, and the outrigger lifts up the truck to move the truck in the direction perpendicular to the rail to enable positioning in the direction perpendicular to the rail, and the middle part of the pile is gripped with the above gripping device. While driving the vibration generator, the pile is driven by the lifting jack, and at that time, the lifting jack is isolated from the vibration by the vibration isolator provided between the gripping device and the lifting jack, and the pile is driven to the predetermined depth. After that, the vibration generator is stopped to release the pile from the gripping device, and then only the gripping device is raised to a predetermined height by the lifting jack to grip the pile again, and the above-described work is repeated.

The pile driving device of the present invention is a truck that can travel on a rail and be fixed at a predetermined position by an outrigger, and can be lifted up by the outrigger to move in a direction perpendicular to the rail, and a plurality of lifting jacks provided on the truck. Gripping device supported by the gripping device for gripping the middle part of the pile, a vibration generator provided in the gripping device, a vibration damping device provided between the gripping device and the lifting jack, and a drive device for a truck that drives the truck. And a power unit connected to the vibration generator.

The gripping device and the lifting jack are preferably a hydraulic gripping device and a lifting hydraulic jack, respectively. Further, the vibration generator is preferably a thin high-frequency hydraulic vibro.

[0008]

Operation: The bogie holding the middle part of the pile by the gripping device is self-propelled, and the bogie is fixed at a predetermined position by the outrigger. Also, if necessary, the outrigger lifts up the truck to move the truck in the direction perpendicular to the rail, and the positioning in the direction perpendicular to the rail is also performed. Then, the pile is driven by the lifting jack while operating the vibration generator to give vibration to the gripping device. Since vibration is applied to the pile, the frictional force around the pile is reduced and it is possible to drive the pile with a small force. At that time, the lifting jack is isolated from vibrations by a vibration isolation device interposed between the gripping device and the lifting jack. Then, the pile is driven by the stroke of the lifting jack by one grip of the gripping device, and the driving of one pile is completed by repeating the raising and lowering of the gripping device. Then, the bogie is released from the outriggers, and the bogie is driven by itself to drive a continuous pile in a line. Therefore, it is possible to work efficiently even under a so-called air-head distance where there is a restriction on the sky, for example, under a bridge or under a railway overhead line, and large auxiliary equipment is not required, so that the construction cost is low.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for carrying out the present invention will be described below with reference to the drawings.

In FIG. 1, a pile (H pile in the illustrated example) 2
The gripping device for gripping the intermediate part of the hydraulic gripping device 1, that is, the hydraulic gripping device 1 in the illustrated example, is mounted on the carriage 10 that is configured to be movable on the rails 11 by the wheels 4 (in the illustrated example, four positions).
The lifting jack, that is, in the illustrated example, is supported by the lifting hydraulic jack 3. Also, this hydraulic gripping device 1
A vibration generator, that is, a thin high-frequency hydraulic vibro 5 in the illustrated example is provided on the upper surface of the hydraulic jack 3.
A vibration isolator 7 is interposed between the hydraulic gripping device 1 and the hydraulic jack 3 in order to isolate the vibration from the vibration. A plurality of (two in the illustrated example) outriggers 6 are provided on the carriage 10, and the carriage 10 is fixed by the outriggers 6 and the carriage 10 is fixed by the outriggers 6.
Is lifted up to move the carriage 10 in a direction perpendicular to the rail 11. Further, the trolley 10 is equipped with a traveling engine 9 for driving the trolley 10, the vibro power unit 8 is provided near the construction site, and is connected to the vibro 5 by a hydraulic circuit.

In operation, for example, the trolley 10 gripping the middle portion of the pile 2 with the hydraulic gripping device 1 at a pile storage location (not shown) on the extension line of the rail 11 is self-propelled to the location where the pile is driven on the rail 11. , The outrigger 6 fixes the carriage. At this time, the truck 10 is lifted up by the outrigger 6 to move the truck 10 in the direction perpendicular to the rail 11, and the positioning in the direction perpendicular to the rail 11 is also performed. As a method of driving the pile 2 (or pulling it out), pressure oil is supplied from the power unit 8 for vibro to the high-frequency hydraulic vibro 5, and the hydraulic gripping device 1 is vibrated to vibrate the pile 2. The pile 2 reduces the frictional force around it due to vibration and also reduces the tip resistance of the pile 2. Therefore, the lifting hydraulic jack 3 is operated to drive the pile 2. Further, if the operation is reversed, the pile can be pulled out.

[0012]

The present invention has the following excellent effects. (1) Since the vibration is applied to the pile by the vibration generator and the peripheral frictional force of the pile is reduced and the pile is press-fitted by the lifting jack, the lifting jack needs only a small force, and a small lifting jack is sufficient. (2) Since the middle part of the pile is gripped by the gripping device, the stroke of the lifting jack is driven by one grip, and one pile is driven by repeating the raising and lowering of the gripping device. , It is possible to drive long piles without using a pile driving tower or a large crane. Therefore, it is possible to drive piles without increasing the number of joint piles even under bridges with a short head distance, under railway overhead lines, etc.

(3) Since the trolley supporting the pile gripping device provided with the vibration generator with the lifting jack is self-propelled on the rail, the trolley is self-propelled and the pile is efficiently driven in line. be able to. (4) Since the dolly can be lifted up by the outrigger to move the dolly in the direction perpendicular to the rail, positioning in the direction perpendicular to the rail can be easily performed. (5) Since the anti-vibration device is interposed between the vibrating gripping device and the lifting jack, the lifting jack is isolated from vibration, and the lifting jack is not inconveniently operated.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of the present invention.

[Explanation of symbols]

 1 ... Hydraulic gripping device 2 ... Pile 3 ... Lifting hydraulic jack 4 ... Wheel 5 ... High frequency hydraulic vibro 6 ... Outrigger 7 ... Anti-vibration device 8 ... For vibro Power unit 9 ・ ・ ・ Running engine 10 ・ ・ ・ Bogie

Continuation of the front page (72) Inventor Noboru Hirano Akasaka DK Building 9F, Akasaka Dc Bldg. 1-3-8, Minato-ku, Tokyo Kashima Construction Co., Ltd. Tokyo Branch (56) References JP-A-53-82008 A) Actual development Sho 55-140541 (JP, U) Japanese public Sho 59-28700 (JP, B2)

Claims (2)

[Claims] 1. A pile gripping device provided with a vibration generator is supported by an elevating jack, a bogie traveling on a rail is self-propelled to a place where the pile is driven, and the bogie is fixed at a predetermined position by an outrigger, and The outrigger lifts the bogie up and moves it in the direction perpendicular to the rail to enable positioning in the direction perpendicular to the rail.The above gripping device grips the middle part of the pile and operates the vibration generator to raise and lower the jack. The pile is driven into the pile by using the anti-vibration device provided between the gripping device and the lifting jack to isolate the lifting jack from vibration, and after the pile is driven to the specified depth, the vibration generator is stopped and gripped. A pile driving method characterized in that the pile is released from the device, then only the gripping device is raised to a predetermined height by the lifting jack to grip the pile again, and the above-mentioned work is repeated. 2. A trolley that travels on a rail and can be fixed at a predetermined position by an outrigger and that can be lifted up by the outrigger to move in a direction perpendicular to the rail, and a stake supported by a plurality of lifting jacks provided on the trolley. A gripping device that grips the intermediate portion, a vibration generator that is provided to the gripping device, a vibration isolation device that is provided between the gripping device and the lifting jack, and a drive device for a dolly that drives the dolly, and a vibration generator. A pile driving device comprising: a power unit to be connected.