JPH06193063A - Press-in pile driving machine and press-in piling method - Google Patents

Abstract

PURPOSE:To enable a work to be easily and properly undertaken. CONSTITUTION:A chuck frame 7 and a main frame 3 or the like jointed thereto are caused to travel through the repetition of the contraction and expansion, and travel of a stand fitted to the lower side of an earth retaining wall clamp 10 in such a way as freely telescopic in a vertical direction, and a jack 16 fitted to the chuck frame 7 in such a way as freely telescopic in a vertical direction and freely slidable in a back-and-forth direction. After the shift of the chuck frame 7, main frame 3 or the like to a desired position, the clamp 10 is pressed against the walls of steel sheet piles 1 and 2 to keep the main frame 3 in braced state. At this position, a pile is pressed in, using a chuck device 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pile press-fitting machine, for example, a pile press-fitting machine for press-fitting foundation piles under a bridge or various structures, and a method of press-fitting a pile using the pile press-fitting machine.

[0002]

2. Description of the Related Art Underground burial pipes such as sewer pipes are laid by digging the ground between the retaining walls formed facing each other to the right and left to form a groove, and laying stones on the bottom of the groove. Compact. Then, concrete is poured, a pipe is laid on the concrete, and the groove is backfilled. However, after the above-mentioned backfilling, uneven settlement often occurs in the underground buried pipe due to various causes before the backfilled soil is compacted and settles as ground. Therefore, the inventor of the present invention has invented a method of embedding piles to reinforce the foundation (Japanese Patent No. 1676765).

[0003]

However, the above method is intended for small stakes such as pine stakes, and its purpose was mainly to prevent subsidence of sewer pipes. Therefore, it was not possible to press-fit large piles such as support piles as permanent structures. In the past, such a large pile was press-fitted into the ground using a large-scale machine such as the Nakabori method or vibro. However, the Nakabori method requires a large tower, and there is a problem that vibration occurs when using a vibro. As a result, it may be difficult or impossible to carry out the work at a site with bad working conditions, such as under a bridge. Therefore, the present invention has been made in view of the conventional circumstances as described above, there is little vibration and noise, and there is no problem even in a place where there is an obstacle in the upper space, support piles such as steel pipe piles, foundation piles such as bridge girders or permanent piles. An object of the present invention is to provide a pile press-fitting machine capable of press-fitting a support pile as a structure. Moreover, it aims at providing the press-fitting construction method of the pile using the said pile press-fitting machine.

[0004]

The pile press-fitting machine of the present invention is a pile press-fitting machine for press-fitting a pile in a groove dug between soil retaining walls facing the left and right provided on the ground. A main frame is extended in a direction orthogonal to the main frame, and a sub frame is provided to the main frame so as to be expandable and contractible, and a chuck device that moves up and down by sandwiching a press-fitted pile is attached to the base end of the main frame. A chuck frame is provided so as to be movable along the main frame, and a vertically expandable and retractable jack is attached to the lower surface of the chuck frame, while at the same time the front end of the main frame can move forward and backward orthogonally to the main frame. A wall clamp is provided, and a vertically extensible stand is configured at the lower end of the earth retaining wall clamp.

In the pile pressing method using the pile press-fitting machine, the earth retaining wall clamp of the pile press-fitting machine disposed between the earth retaining walls is separated from the earth retaining wall surface to ground the stand, and then the jack is moved upward. Move the main frame by moving one of the jacks forward and then grounding, moving the stand upward to make it difficult to move from the bottom surface in the groove, and then moving the chuck frame in the moving direction. Then, the pile press-in machine is self-propelled, and after the movement to the predetermined position is completed, the earth retaining wall clamp is pressed against the earth retaining wall surface to tension the main frame, and then the pile is clamped by the chuck device to press the pile. It is characterized by

[0006]

[Operation] A pile press-in machine is installed in a groove dug between the soil retaining walls facing each other on the left and right, the subframe is retracted, the soil retaining wall clamp is separated from the soil retaining wall, and the stand is lowered. Extend to ground. After that, the jack is moved upward to separate it from the bottom surface in the groove, the jack located in the traveling direction of the pile press-fitting machine is advanced in the traveling direction, and the jack located on the opposite side to this jack is extended downward to ground. . Next, the stand is moved upward to separate from the bottom surface in the groove, and the chuck frame is moved in the traveling direction. By repeating such operations of the stand and the jack, the chuck frame and the main frame to which the chuck frame is connected are moved to allow the pile press-fitting machine to self-propelled in the groove and to move to the desired position in the groove of the pile press-fitting machine. Complete the move to. After this, the subframe is extended and the earth retaining wall clamp is pressed against the earth retaining wall surface to bring the main frame into a tensioned state, and at this position, the pile is gripped and lowered by the chuck device to press the pile.

[0007]

EXAMPLE An example of a pile press-fitting machine and a pile press-fitting method of the present invention will be described. 1 to 5, the pile press-fitting machine includes a pair of parallel main frames 3 extending in a direction orthogonal to the space between the steel sheet piles 1 and 2 forming the left and right soil retaining walls.
A pair of sub-frames 4 is slidably assembled inside both ends of these main frames 3, and a cylinder device 5 for expanding and contracting the sub-frames 4 is built in both frames 3, 4.

A chuck frame 7 is movably provided on the main frame 3 along the main frame 3. The chuck frame 7 is provided with a moving cylinder device 8. The end of the cylinder body 8a of the cylinder device 8 is connected to the end of the chuck frame 7, and the end of the piston rod 8b is connected to a bracket 9 fixed to the upper surface of the main frame 3. The bracket 9
Are fixedly mounted on the upper surface of the main frame 3 at two positions separated in the left-right direction, and the piston rod 8 is attached to the bracket 9 at a position selected according to the movement amount of the chuck frame 7.
b Connect the tips. Further, if the cylinder devices 8 are connected in two, and the piston rod 8b of one cylinder device 8 is connected to the chuck frame 7 and the piston rod 8b of the other cylinder device 8 is connected to the main frame 3, the chuck frame 7 The slide movement amount of can be doubled.

At both ends of the main frame 3, there are provided earth retaining wall clamps 10 which are slidable in a direction orthogonal to the extending direction of the main frame 3. In this case, substantially rectangular sliders 11 are fixed to both ends of the main frame 3. This slider 11 has
Rail portions 11a are formed at the upper and lower ends. The soil retaining wall clamp 10 has a substantially rectangular plate shape, and slide grooves 10a that are open inward are formed at upper and lower ends, respectively. Then, the earth retaining wall clamp 10 is slidable in the front-rear direction by fitting the slide groove 10a into the rail portion 11a and assembling the slide groove 10a into the slider 11.

The cylinder device 12 for slidingly moving the soil retaining wall clamp 10 with respect to the slider 11 is disposed in a space formed on the overlapping surface between the slider 11 and the soil retaining wall clamp 10. The earth retaining wall clamp 10 is provided with clamp claws 13 that can extend and contract so as to face the surfaces of the steel sheet piles 1 and 2. Each clamp claw 13 is connected to a piston rod of a cylinder device 14 for expanding and contracting the clamp claw 13, and each cylinder device 14 is arranged laterally at a predetermined interval on each of the upper and lower slide portions of the earth retaining wall clamp 10. Set up.

At the front and rear portions of the lower surface of each of the soil retaining wall clamps 10, there are mounted stands 15 which project from the lower surface of the clamp 10 and are extendable and contractible in the vertical direction.
The stand 15 is expanded and contracted by a cylinder device (not shown). Four jacks 16 are provided at the corners of the bottom of the chuck frame 7 so as to be extendable in the vertical direction and slidable in the front-back direction. This jack 1
6, a cylinder device 17 for expanding and contracting is provided, and a piston rod 17b of the cylinder device 17 is provided.
Each jack 16 is attached to the tip portion. Slide support portions 71 extending in the front-rear direction are provided on the left and right sides of the bottom of the chuck frame 7, and the slide support portions 71 are provided.
The cylinder body 17a of each cylinder device 17 is connected to a pair of beams 72 slidably held by the cylinder body 17a. As a result, each cylinder device 17 is slidable in the front-rear direction. Further, a cylinder device 18 for slidingly moving each jack 16 is provided.
Each cylinder device 18 is built in the slide support portion 71, and the rear end portion of the cylinder body 18a is the slide support portion 7.
1, the tip of the piston rod 18b is connected to the beam 72.

The structure of the chuck device 6 mounted on the chuck frame 7 will be described with reference to FIGS. 1 and 6. The chuck device 6 has a substantially tubular chuck body 61.
And a single chuck fixing claw 62 and two chuck movable claws 63 arranged along the circumferential direction on the inner peripheral surface of the main body 61. In the chuck body 61, slide grooves 6a are formed in the vertical direction at two locations on the outer surface of the chuck body 61 that face each other, while guide rails 73 are provided at the two locations on the inner surface of the chuck frame 7 that face each other in the vertical direction. The chuck body 61 is provided inside the chuck frame 7 so as to be vertically movable by the slidable fitting of the guide rail 73 and the slide groove 6a.

Cylinder devices 19 for vertically moving the chuck body 61 are provided at four corners around the outer surface of the chuck body 61. The rear end of the cylinder body 19a of the cylinder device 19 is connected to the chuck frame 7, and the tip end of the piston rod 19b is connected to brackets 64 projectingly formed on the outer surface of the chuck body 61 at four circumferential positions. Further, the chuck body 61 includes a cylinder device 2 for opening and closing the chuck.
0 is provided. That is, this cylinder device 20
The cylinder body 20a is attached to a portion of the chuck body 61 corresponding to the position where the chuck movable claw 63 is disposed, and the tip end portion of the piston rod 20b is connected to the back surface of the chuck movable claw 63. Therefore, by the expansion and contraction of the piston rod 20b of the cylinder device 20, the chuck movable claw 63 can be moved back and forth to grip or release the press-fitted pile. If the diameter of the press-fitted pile is changed, the size and shape of the chuck fixing claw 62 and the chuck movable claw 63 can be changed (see FIG. 7). Further, the chuck device 6 has a configuration including a pair of chuck movable claws 63 as shown in FIG. 8A or a pair of chuck movable claws 63 as shown in FIG. 8B. It may be configured.

A pile press-fitting method using the pile press-fitting machine having the above structure is performed as follows. As shown in FIG. 9A, the pile press-fitting machine 22 is arranged in the groove 21 dug between the steel sheet piles 1 and 2 facing each other on the left and right. Then, the stand 15 is extended downward to be grounded so that the main frame 3 is supported on the inner bottom surface of the groove 21. Next, the cylinder device 17 is actuated to move the jack 16 upward to separate it from the inner bottom surface of the groove 21. In this case, the subframe 4 is contracted by the operation of the cylinder device 5 to separate the earth retaining wall clamp 10 from the surfaces of the steel sheet piles 1 and 2, and the main frame 3 is released from the stretched state.

Next, as shown in FIG. 9 (B), the jack 16 located in the traveling direction of the pile press-fitting machine 22 is slid in the traveling direction by the operation of the cylinder device 18, and the jack 16 and the opposite traveling direction. The jack 16 located at is extended downward by the operation of the cylinder device 17 to be grounded,
Then, the stand 15 is moved upward and separated from the inner bottom surface of the groove 21.

Next, as shown in FIG. 9C, the cylinder device 18 for moving the jack 16 located in the traveling direction is actuated to contract the piston rod 18b, and the jack 16 located in the opposite traveling direction is moved. Cylinder device 18
And the piston rod 18b is extended, the respective jacks 16 are grounded and are in a fixed state, so that the chuck frame 7 itself moves in the traveling direction. By the operation of the stand 15 and the jack 16 as described above, the chuck frame 7 and the main frame 3 and the like connected thereto move, and the pile press-fitting machine 22 self-propels in the groove 21.

As described above, the groove 21 of the pile press-fitting machine 22
When the movement to the desired position in the inside is completed, as shown in FIG. 5, first, the earth retaining wall clamp 10 is slid with respect to the slider 11 for positioning, and then the subframe 4 is extended to extend the earth retaining wall clamp. 10 is pressed against the steel sheet piles 1 and 2, and the main frame 3 is stretched. Therefore, the pile press-fitting machine 22 is integrally restrained under the tension compression of the earth retaining wall clamp 10 across the steel sheet piles 1 and 2. That is, the steel sheet piles 1 and 2 act as a reaction force anchor for press-fitting the pile.

The earth retaining wall clamp 10 is slid with respect to the slider 11 to position it.
This is to cope with variations in the front-rear direction position of the steel sheet piles 1, 2 forming the retaining wall. Further, the variation in the interval between the left and right steel sheet piles 1 and 2 is dealt with by operating the cylinder device 14 to expand and contract the clamp claw 13 and adjust its position. To adjust the lateral position of the chuck device 6, the jack 16 is moved upward by the operation of the cylinder device 17 so as to be separated from the inner bottom surface of the groove 21, and then the chuck frame 7 is slid by the operation of the cylinder device 8. To do.

As described above, the position of the chuck device 6 is adjusted to a necessary portion, the pile is gripped at the adjusted position, and the cylinder body 19 pushes down the chuck body 61 to press the pile into. The press-fitting of the piles is progressively performed by repeating the operations of raising the chuck body 61 while the chuck device 6 is opened, sandwiching the piles at the raised position, and pushing down again. In this case, the fluid switching valve to the cylinder device 19 is switched at high speed to perform the press-fitting operation by the pulsed vertical movement of the chuck device 6. Further, the static pressure fitting operation can be performed by switching the fluid switching valve at a low speed. When the press-fitting construction of the pile to a certain necessary part is completed, the pile press-fitting machine 22 is moved to the next pile press-fitting construction section as described above, and the pile press-fitting construction is executed in the next pile press-fitting construction section as described above.

According to the pile press-fitting machine 22 and the pile press-fitting construction method having the above-mentioned constitution, the left and right steel sheet piles 1, which are opposed to each other, can be moved to a position corresponding to the portion corresponding to the joint portion of the underground buried pipe.
This can be done easily and reliably in the trench 21 between the two. Further, since the steel sheet piles 1 and 2 are used as reaction force anchors for press-fitting the piles, the fixed state of the pile press-fitting machine 22 can be stabilized and the work can be performed more reliably. Therefore, the pile press-fitting machine 22 and the pile press-fitting construction method can simply solve the problem of uneven settlement of the underground buried pipe.

In particular, according to the construction of the pile press-fitting machine 22, since the back and forth movements and the left and right movements of the chuck device can be made directly by the linear movements, the movement of the chuck device with respect to the required place is required in terms of scale and mobility. Can be carried out quickly and easily by a suitable driving means such as a cylinder device,
Moreover, since the pile press-fitting machine 22 is capable of self-propelled forward and backward movements in the trench 21, the pile press-fitting work can be accurately performed under the work of step.

Further, since the pile press-fitting machine 22 having the above-mentioned structure has no portion protruding upwards and the like, its operation can be carried out properly under the foot work as described above, so that there is no obstacle in the upper space. It can be installed in a certain place. Further, since the self-propelled mechanism can be driven and the chuck device 6 can be moved quickly and easily by an appropriate driving means, such as a cylinder device, which is the minimum necessary in terms of scale and machine power, there is no problem of vibration and noise.

According to the pile press-fitting machine 22 having the above structure,
Since the earth retaining wall clamp 10 is slid with respect to the slider 11 so that the positioning thereof can be performed, it is possible to cope with the variation in the front-back direction position of the steel sheet piles 1, 2 which form the earth retaining wall facing left and right. In addition, by expanding and contracting the clamp claw 13 and adjusting its position, it is possible to deal with the variation in the interval between the left and right steel sheet piles 1 and 22, and to obtain a reliable clamped state.

Further, by making the inner bottom surface of the groove 21 stretched by the jack 16, it is possible to eliminate rattling of the pile press-fitting machine 22 and to eliminate rattling that occurs when the press-fitting / pulling-out is repeated. In the above pile press-fitting machine 22, the stand 15, the telescopic cylinder device of the stand 15, the jack 16, the telescopic cylinder device 17 of the jack 16, and the slide moving cylinder device 18 of the jack 16. , And instead, FIG.
As shown in, the self-propelled crawler portion 23 may be attached to the lower surface of the retaining wall clamp 10 so that the pile press-fitting machine 22 is self-propelled.

[0025]

According to the pile press-fitting machine and the pile press-fitting construction method of the present invention, the movement of the pile press-fitting machine can be easily and reliably carried out in the downhole groove between the left and right facing earth retaining walls, and the earth retaining wall for press-fitting the piles. Since it is used as a reaction force anchor, the fixed state of the pile press-fitting machine can be stabilized, and press-fitting work of large piles such as steel pipe piles that can be used as support piles can be performed more reliably.

Particularly, according to the construction of the pile press-fitting machine of the present invention,
The chuck device can be moved quickly and easily by a suitable driving means that is the minimum necessary in terms of scale and mobility, and moreover, large-scale piles such as steel pipe piles can be press-fitted accurately under foot work, and the upper part It can be installed even in places with obstacles in the space, and there are no problems of vibration and noise.

Further, according to the pile press-fitting machine of the present invention, it is possible to deal with the variation in the front-rear direction positions of the soil retaining walls facing left and right, and to deal with the variation in the interval between the left and right soil retaining walls.
A reliable clamped state can be obtained.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a pile press-fitting machine of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a side sectional view of the same.

FIG. 5 is a partial plan view showing an operating state of a retaining wall clamp of the above embodiment.

FIG. 6 is a plan view showing the configuration of a chuck device of the above embodiment.

FIG. 7 is a plan view showing another embodiment of the chuck device.

FIG. 8 is a plan view showing still another embodiment of the chuck device.

FIG. 9 is a schematic view showing a pile press-fitting method using the pile press-fitting machine of the embodiment.

FIG. 10 is a front view showing another embodiment of the pile press-fitting machine.

[Explanation of symbols]

 1 Steel Sheet Pile 2 Steel Loss Plate 3 Main Frame 4 Sub Frame 6 Chuck Device 7 Chuck Frame 10 Clasp Wall Clamp 15 Stand 16 Jack 21 Groove 22 Pile Press-in Machine

Claims (2)

[Claims] 1. A pile press-fitting machine for press-fitting a pile in a groove dug between left and right soil retaining walls formed on the ground, the main frame extending in a direction orthogonal to the soil retaining walls. , A sub-frame is provided on the main frame so as to be expandable and contractible, and a chuck frame having a chuck device for holding a press-fitted pile and vertically moving is provided at the base end of the main frame so as to be movable along the main frame. While attaching a jack that is vertically expandable and contractible and movable back and forth on the lower surface of the chuck frame, a retaining wall clamp that is movable back and forth orthogonal to the main frame is provided at the tip of the main frame. A pile press-fitting machine consisting of a vertically expandable stand. 2. The earth retaining wall clamp of the pile press-fitting machine disposed between the earth retaining walls is separated from the earth retaining wall surface and the stand is grounded, and then the jack is moved upward to separate from the bottom surface in the groove. After advancing the jack and grounding it, moving the stand upward to separate it from the bottom surface in the groove, and then moving the chuck frame in the traveling direction to move the main frame and allow the pile press-fitting machine to self-propel, After the movement to the position is completed, the soil retaining wall clamp is pressed against the soil retaining wall surface to tension the main frame, then the pile is clamped by the chuck device and lowered to press the pile in.