JPH08269967A - Method and device for driving and drawing-out of steel sheet-pile - Google Patents

Abstract

PURPOSE: To enhance the efficiency of sheet pile driving works to a great extent. CONSTITUTION: A plurality of steel sheet-piles 8 are provided at a certain spacing S equivalent to twice of the width W of each sheet pile 8 and hung in a sheet pile driving device in such an arrangement that they are facing the same side, and in this condition, the sheet piles 8 are driven into the ground to the specified depth. Then another plurality of sheet piles 8 are hung at the same spacing S in such a manner as facing oppositely to the already driven sheet pile 8, and are driven along them. Thus provision of sheet piles 8 can be made in such an arrangement that their facings differ alternately.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel sheet pile driving method and a steel sheet pile driving method in which steel sheet piles are driven into the ground so that the sheet piles are alternately oriented.

[0002]

2. Description of the Related Art In the conventional steel sheet pile driving method,
Using a single auger screw surrounded by a casing, while excavating the ground by rotating this auger screw, after driving the first steel sheet pile suspended on the casing outer peripheral surface to a predetermined depth in the ground, Leaving the steel sheet pile in the ground, pulling up the auger screw together with the casing, then turn the second steel sheet pile in the opposite direction to the first steel sheet pile that has already been driven, and excavate the area adjacent to the first excavation point. Meanwhile, the second steel sheet pile is driven to a predetermined depth in the ground by engaging its end portion with the opposite end portion of the first steel sheet pile. By repeating such a process, a series of steel sheet pile rows, which are cast in such a manner that the directions thereof alternate with each other, are formed in the ground.

Further, when a steel sheet pile is pulled out from a series of steel sheet pile rows driven into the ground as described above, a single auger screw is attached to the inner surface of the steel sheet pile at one end (first) of the steel sheet pile row. After arranging at a position close to each other, excavating the ground to a predetermined depth in a state where each chuck device is arranged on the side corresponding to the steel sheet pile, suspend and pull out the first steel sheet pile with the chuck device of the casing, After that, by turning the chuck device in the opposite direction, the part adjacent to the first excavation part is excavated to a predetermined depth, the second steel sheet pile is hung and pulled out by the chuck device, and such a process is repeated. The sheet pile is being pulled out.

[0004]

According to the above-mentioned conventional steel sheet pile driving method, steel sheet piles are sequentially driven into the ground one by one, and each time one steel sheet pile is driven, the direction of the steel sheet pile to be driven next is changed. Since I changed it, the driving work took a lot of time and labor, and the work efficiency was poor. Also, in the conventional steel sheet pile drawing method, since the steel sheet pile row in the ground is pulled out one by one and the chuck device is turned in the opposite direction for each pulling out, the pulling work is also extremely troublesome and time-consuming. It took a lot of work and the work efficiency was poor.

The present invention has been made in view of the above problems of the conventional method.
An object of the present invention is to provide a steel sheet pile driving method and a drawing method capable of efficiently driving and drawing steel sheet piles, and further an apparatus adopted for driving and drawing the steel sheet pile. Other objects of the present invention will be clarified from the description of embodiments below.

[0006]

The steel sheet pile driving method according to claim 1 of the present invention is a state in which a plurality of steel sheet piles 8 are oriented in the same direction at intervals S corresponding to twice the width W of the steel sheet pile 8. In this state, a plurality of steel sheet piles 8 are simultaneously driven into the ground to a predetermined depth, and then a plurality of steel sheet piles 8 are also spaced at the same intervals S as described above. The steel sheet piles 8 are hung in the direction opposite to the above, and the plurality of steel sheet piles 8 are driven along the previously driven steel sheet piles 8 so that the steel sheet piles 8 can be driven so that the directions thereof alternate with each other. It is the one.

Further, in the steel sheet pile pulling-out method according to the second aspect of the present invention, the steel sheet pile 8 is driven into the ground by the chuck device 7 provided at the interval S corresponding to twice the width W of the steel sheet pile 8. First, a plurality of steel sheet piles 8 in the same direction are chucked and simultaneously withdrawn, and then a plurality of steel sheet piles 8 facing in the opposite direction are chucked and simultaneously withdrawn. Is.

In the method for driving a steel sheet pile according to claim 3 of the present invention, a plurality of steel sheet piles 8 are set in the same direction by the chuck device 7 at intervals S corresponding to twice the width W of the steel sheet pile 8. The steel sheet piles 8 are suspended, and in this state, the plurality of steel sheet piles 8 are driven into the ground to a predetermined depth.
After driving the steel sheet piles 8 of the required number on one side in the same direction at the intervals S, the plurality of steel sheet piles 8 are similarly driven at the same spacing S as described above. In the state in which the direction is opposite to that of the already driven steel sheet pile 8, the other end of the previously driven steel sheet pile 8 row from the uninjected portion between the already driven steel sheet pile 8 rows on one end side of the already driven steel sheet pile 8 row. The steel sheet piles 8 can be driven in such a manner that the steel sheets 8 are driven up to the side in the same manner as described above, whereby the directions of the steel sheet piles 8 alternate.

According to a fourth aspect of the present invention, there is provided a steel sheet pile driving apparatus in which an elevating body 1 capable of ascending and descending along a leader 2 and an elevating body 1 are provided with an interval S corresponding to twice the sheet pile width W. A plurality of auger screws 5 arranged side by side, an auger screw rotation driving device 9 for rotationally driving the auger screws 5, a casing 6 externally fitted to each auger screw 5, and an outer peripheral surface of each casing 6. The steel sheet pile holding chuck device 7 is provided.

In the steel sheet pile withdrawing device according to the fifth aspect of the present invention, an elevating body 1 capable of ascending / descending along a leader 2 and an elevating body 1 are provided with an interval S corresponding to twice the steel sheet pile width W. A plurality of auger screws 5 arranged side by side, an auger screw rotation driving device 9 for rotationally driving the auger screws 5, a casing 6 externally fitted to each auger screw 5, and an outer peripheral surface of each casing 6. It is provided with a chuck device 7 for suspending the steel sheet pile provided.

A steel sheet pile driving apparatus according to a sixth aspect of the present invention has a configuration according to the fourth aspect, which comprises a casing rotation driving means 22 for rotationally driving the casing 6.

A steel sheet pile withdrawing device according to a seventh aspect of the present invention has a configuration according to the fifth aspect, which comprises a casing rotation driving means 22 for rotationally driving the casing 6.

An apparatus for driving a steel sheet pile according to an eighth aspect of the present invention comprises a swivel driving means 4 for horizontally swiveling the steel sheet pile 8 around the leader 2 side. Is.

[0014]

In the method for driving the steel sheet pile 8 according to the first aspect of the present invention, the plurality of steel sheet piles 8 are chucked in the same direction with the intervals S corresponding to twice the width W of the steel sheet piles. It is suspended by the device 7, and in this state, the plurality of steel sheet piles 8 are simultaneously driven into the ground to a predetermined depth. As a result, a plurality of steel sheet piles 8 on one side are simultaneously driven in the same direction at the intervals S.

Next, the same plurality of steel sheet piles 8 are suspended by the chuck device 7 in a state in which the direction is opposite to that of the already driven steel sheet pile 8 at the interval S, and in this state, the plurality of steel sheet piles are suspended. 8 is simultaneously driven along the previously driven steel sheet pile 8. As a result, a plurality of steel sheet piles 8 on the opposite side of the already driven steel sheet pile 8 are driven in the same direction to form a series of rows of steel sheet piles 8 having alternating directions.

Therefore, according to this driving method, a plurality of steel sheet piles 8 are driven at the same time, and it is not necessary to change the direction of the steel sheet pile 8 every time one steel sheet pile 8 is driven as in the conventional case. Since the steel sheet piles 8 are continuously driven on each side several times, the driving efficiency of the steel sheet piles 8 can be greatly improved as compared with the conventional method.

In particular, when a plurality of steel sheet piles 8 are first driven, only the soil in the ground is applied, but when the next steel sheet pile 8 is driven along the placed steel sheet pile 8. In the prior art, since the end of one side of the steel sheet pile 8 to be next driven is driven while engaging with the already driven steel sheet pile 8 along the end edge of the steel sheet pile 8 that has been conventionally driven, it is driven. One edge 8 of the steel sheet pile receives both the resistance of the underground soil and the resistance of the already punched steel sheet pile, while the other edge of the steel sheet pile receives only the resistance of the underground soil. The resistance between them becomes unbalanced, and it is difficult to maintain the straightness at the time of driving. Therefore, it was attempted to perform the driving while modifying while driving, but in the present invention, a plurality of steels that have been driven are used. Since the next steel sheet pile 8 is to be placed between the sheet piles 8, both end edges of the steel sheet pile 8 are To receive the resistance of the ground resistance and the steel sheet pile, resistance loaded on both edges of the steel sheet pile are the same, it is possible that this is as much as possible maintaining the straightness for.

Further, in the steel sheet pile pulling-out method according to claim 2 of the present invention, a chucking device for simultaneously chucking a plurality of steel sheet piles 8 placed in the ground is provided with a double width W of the steel sheet pile. The chuck device 7 is provided with a corresponding spacing S.
First, a plurality of steel sheet piles 8 in the same direction are pulled out at the same time, and then a plurality of steel sheet piles 8 facing in the opposite direction are pulled out at the same time. Can be significantly improved compared to the conventional method.

In the method for driving a steel sheet pile according to a third aspect of the present invention, a plurality of steel sheet piles 8 are arranged in the same direction with a spacing S corresponding to twice the width W of the steel sheet piles in the same direction. Suspended by a plurality of steel sheet piles 8 in this state
Is driven into the ground to a predetermined depth, and subsequently, the same plurality of steel sheet piles 8 are driven in a state in the same direction at the intervals S from a position distant from the one end of the already driven steel sheet pile 8 by the intervals S. By repeating the driving, the required number of steel sheet piles 8 on one side are simultaneously driven in the same direction at the intervals S.

Next, the same plurality of steel sheet piles 8 are already driven at one end side of the row of already driven steel sheet piles 8 in a state in which the direction is opposite to that of the already driven steel sheet pile 8 at the interval S. By driving in the same manner as described above from the uninjected portion between the steel sheet piles 8 to the other end side of the already-injected steel sheet pile 8 row, the required number of steel sheet piles 8 on the opposite side of the already-injected steel sheet pile 8 are formed. A series of eight rows of steel sheet piles, which are driven in the same direction and have alternating directions, are formed.

As described above, since a plurality of steel sheet piles 8 are simultaneously driven and the required number of steel sheet piles 8 in the same direction are continuously driven on one side, the work of driving a large number of steel sheet piles 8 can be significantly improved. .

According to the steel sheet pile driving apparatus of the fourth aspect, the lifting body 1 which can be moved up and down along the leader 2, and the lifting body 1 are provided with the interval S corresponding to twice the steel sheet pile width W. A plurality of auger screws 5 arranged side by side, an auger screw rotation driving device 9 for rotationally driving the auger screws 5, a casing 6 externally fitted to each auger screw 5, and an outer peripheral surface of each casing 6. Since the chuck device 7 for suspending the steel sheet pile is provided, the method of the present invention can be easily carried out.

According to the steel sheet pile withdrawing apparatus of the fifth aspect, the elevating body 1 capable of ascending and descending along the leader 2 and the elevating body 1 are provided with an interval S corresponding to twice the steel sheet pile width W. A plurality of auger screws 5 arranged side by side, an auger screw rotation driving device 9 for rotationally driving the auger screws 5, a casing 6 externally fitted to each auger screw 5, and an outer peripheral surface of each casing 6. Since the chuck device 7 for suspending the steel sheet pile is provided, the method of the present invention can be easily carried out.

According to the sixth and seventh aspects, by rotating the casing 6 by the casing rotation driving means, the position of the chuck device 7 can be easily changed when the steel sheet pile 8 is driven in or pulled out, and at the same time, the steel is moved. The direction of the sheet pile 8 can be easily changed.

According to the eighth aspect of the present invention, it is possible to freely change the driving direction of the steel sheet pile by reducing the movement of the pile driver main body such as a crawler crane.

[0026]

EXAMPLES Examples will be described with reference to the drawings.
1 to 4 showing a steel sheet pile driving apparatus according to the present invention, reference numeral 1 is an elevating body which can be moved up and down along a leader 2 erected by a crawler crane K. 2 fixed chains 3 and 3 are provided, and an elevating / lowering device M including a sprocket that meshes with these chains 3 and 3 is provided on the elevating / lowering body 1. The elevating / lowering device M drives the elevating / lowering body 1 up and down. To be done. Reference numeral 4a denotes a substantially T-shaped housing in a plan view. A projecting end portion of the T-shaped housing 4 is pivotally attached to the elevating body 1 so as to be horizontally rotatable, and a pair of auger screws is provided at a rotating end portion opposite to the pivotal attachment portion. 5,5
And a casing 6 surrounding the outer periphery of each auger screw 5 is externally fitted to each auger screw 5. Reference numeral 7 denotes a chuck device for suspending the steel sheet pile 8 on the outer peripheral surface of the casing 6, and is provided at the upper end of each casing 6. Reference numeral 9 is an auger screw rotation drive device.

The structure of the steel sheet pile driving device will be described in more detail. A driving gear 11 which is directly connected to the output shaft of the motor 10 is coaxially supported in the housing 4 on the side of the pivot end thereof. A pair of driven gears 12 and 12 on both sides coaxially connected to the pair of auger screws 5 and 5, respectively, are pivotally supported on the rotating end side, and the rotation of the driving gear 11 is performed by the intermediate gears 13 and 14. Both driven gears through
2, 12 are transmitted. Then, when the driving gear 11 rotates counterclockwise as shown in FIG. 3, both driven gears 1
2 and 12 rotate clockwise respectively.

As shown in FIGS. 3 and 4, the housing 4
The turning drive means 4 is connected to a. That is, a hollow shaft body 15 is connected to the lower surface of the housing 4a coaxially with the driving gear 11, and a shaft body 16 is concentric with the hollow shaft body 15 on the lower side wall 1a of the elevating body 1. Was erected,
The hollow shaft body 15 on the housing 4a side is the shaft body 1 on the lifting body 1 side.
6 is rotatably fitted and suspended via a bearing 17, and the shafts 15 and 16 and the bearing 17 constitute a pivot portion of the housing 4a. The motor 10 is supported so as to be rotatable relative to the lifting body 1.

Further, the hollow shaft body 1 on the housing 4a side
5, a worm wheel 18 is concentrically provided, and a worm 19 that meshes with the worm wheel 18 is pivotally supported on the elevator body 1 side. The worm 19 is attached to a motor (not shown) provided on the elevator body 1 side. They are linked together. Therefore, by the operation of this motor, the hollow shaft 15 is rotated via the worm 19 and the worm wheel 18, so that the housing 4a is horizontally swung about the pivot portion as shown by the phantom line in FIG. can do.

As shown in FIG. 2, the pair of auger screws 5 and 5 are arranged in parallel with each other with an interval S corresponding to twice the width W of the steel sheet pile 8. As shown in FIG. 4, the casing 6 is connected to a cylindrical member 20a concentrically connected to the upper end of the casing 6 and to the lower surface of the housing 4a so as to be concentrically connected to the auger screw 5 so as to droop. A cylindrical member 20b fitted inside the cylindrical member 20a on the side and a bearing 22 interposed between the cylindrical members 20a and 20b are rotatably hung and connected to the housing 4a. And casing 6
A worm wheel 23 is concentrically provided on the cylindrical member 20a on the casing 6 side, and a worm 24 meshing with the worm wheel 23 is pivotally supported on the housing 4a side. Worm 2
Reference numeral 4 is linked to a motor (not shown) provided on the housing 4a side. Therefore, the operation of this motor causes the cylindrical member 20a to rotate via the worm 24 and the worm wheel 23, and thus the casing 6
Is designed to be rotated.

FIG. 5 shows a chuck device 7 for suspending a steel sheet pile. The chuck device 7 has a chuck frame 25 attached to a casing 6, and a chuck cylinder 26 is pivotally attached to the chuck frame 25. The chuck cylinder 26 is attached to the tip of the piston rod 26a.
The base end of a swing lever 28 pivotally attached to the lower end of the swing lever 28 is pivotally connected by a pin 29, and a chuck claw 30 is attached to the tip of the swing lever 28. When the extension operation is performed, the swing lever 28 swings clockwise as shown by the phantom line, and the steel sheet pile 8 can be latched and fixed by the chuck claw 30 at the tip.

The steel sheet pile 8 is formed of a steel plate in a groove shape as shown in FIG. 6, and has engaging portions 8a having a substantially U-shaped cross section at both end portions thereof. As shown in FIG. 6, inside the lower end of the steel sheet pile 8, a pair of locked bars 8b, 8b on both sides are provided in a horizontal state, and both of these locked bars 8b, 8b have an outer circumference of the casing 6. An L-shaped locking pin 6b protruding downward at the lower end of the surface is releasably locked, whereby the steel sheet pile 8 is reliably suspended from the casing 6. Further, as shown in FIGS. 4 and 5, each casing 6 is provided with a plurality of earth discharging holes 6a over substantially the entire area of the casing 6, and when excavating the ground by the auger screw 5, the excavated earth and sand are removed. It can be discharged.

Further, as shown in FIG. 4, the shaft portion 5a of each auger screw 5 and the shaft portion 12a of the gear 12 connected to the upper end of the shaft portion 5a are formed in a hollow shape. The hollow portions 12a are connected to each other so as to communicate with each other, and a swivel joint 31 is provided between the upper end of the shaft portion 12a on the gear 12 side and the housing 4a. Then, when the ground soil to be excavated is hard, water (or air) is supplied to the hollow portion of the shaft portion 12a on the gear 12 side through the swivel joint 31, and the tip of the shaft portion 5a of the auger screw 5 is supplied. It sprays more into the excavated soil, thereby facilitating excavation of hard soil. Further, the lifting / lowering body 1 is provided with a guide roller 32 that is engaged with and guided by a guide rail 2a arranged along the reader 2.

Next, a method of driving the steel sheet pile 8 by using the driving device having the above-mentioned structure will be described with reference to FIGS. 7 and 8. In addition, in this FIG.
8 to 8 show the construction order, respectively.

First, as shown in FIG. 7, the steel sheet pile 8 is hung on the outer peripheral surface of each casing 6 by the chuck device 7 (FIG. 5) in the same constant direction. Is placed at a predetermined position on the ground and both auger screws 5 and 5 are rotated by the auger screw rotation drive device 9 to excavate the ground, and two steel sheet piles 8 and 8 are equivalent to twice the steel sheet pile width W. Drive to a predetermined depth in the ground at an interval S Then, the steel sheet piles 8 and 8 are left in the ground, and the auger screws 5 and 5 are pulled up to the ground together with the casings 6 and 6. In this case, the driving of the steel sheet pile 8 is performed by driving the lifting body 1 by the operation of the lifting drive device 3 and the rotational force of the auger screw 5. If the lifting body 1 does not include a lifting drive device, a device including the lifting body 1 that is suspended by a lifting operation wire that is hung on the top of the reader 2 and that is lowered by unwinding the wire. It may be performed by the total gravity and the rotational force of the auger screw 5, in which case an auxiliary press-fitting device may be used.

After the two steel sheet piles 8 and 8 have been driven to a predetermined depth in the ground as described above, the direction of the steel sheet piles 8 suspended by the respective casings 6 is changed to the casing rotation driving means 2 described later.
In the state in which the auger screws 5, 5 are hung by being rotated in the opposite direction with respect to the already driven steel sheet pile 8 shown in FIG. While moving to the driving position and excavating at this position in the same manner as described above, while driving the two steel sheet piles 8, 8 suspended in opposite directions in the casings 6, 6 to a predetermined depth, the steel sheet pile 8 is driven. By sometimes engaging the opposing end portions (engaging portions 8a) of the steel sheet pile 8 and the already driven steel sheet pile 8 with each other, the state shown in FIG. 7 is obtained. After this, the auger screws 5, 5 are attached to the casing 6,
Take it to the ground with 6.

Although FIG. 7 shows the case of driving four steel sheet piles 8, a large number of steel sheet piles 8 can be driven by repeating the above steps.

Next, the construction method illustrated in FIG. 8 will be described. First, as shown in FIG. 8, the steel sheet pile 8 is hung on the outer peripheral surface of each casing 6 by the chuck device 7 in the same fixed direction. A pair of auger screws 5, 5 on both sides are arranged at predetermined positions on the ground, both auger screws 5, 5 are rotated by an auger screw rotation drive device 9 to excavate the ground, and the first and second steel sheet piles 8, 8 for steel sheet pile width W
Driving to a predetermined depth in the ground at an interval S corresponding to twice the above. After that, leave these steel sheet piles 8, 8 in the ground,
The auger screws 5 and 5 are pulled up to the ground together with the casings 6 and 6.

As described above, after the two steel sheet piles 8 and 8 have been driven to a predetermined depth in the ground at an interval S corresponding to twice the steel sheet pile width W, the two steel sheet piles 8,
One end of 8, that is, the two auger screws 5, 5 are moved to a position separated from the second steel sheet pile 8 along the row of the same sheet piles by the distance S, and at that position, both auger screws 5, 5 are moved in the same manner as described above. While rotating and excavating, the first and second
The third and fourth steel sheet piles 8 and 8 suspended in the casings 6 and 6 in the same direction as the second steel sheet piles 8 and 8 are driven to the predetermined depth at the interval S, and then the third and fourth steel sheet piles. Augerscrew 5,5 leaving 8,8 in the ground
Is pulled up to the ground with casings 6 and 6. Subsequently, the auger screws 5, 5 are moved again to the position separated from the fourth steel sheet pile 8 along the row of the same steel sheet piles by the distance S, and the casing 6 is excavated in the same manner as described above from the position. By driving the 5th and 6th steel sheet piles 8, 8 suspended in the same direction at 6 and 6 to the predetermined depth at the interval S, as shown in FIG. In addition, the steel sheet piles are driven into at intervals S corresponding to twice the width W of the sheet piles. In this case, the auger screws 5, 5 are moved, that is, the driving device is moved by a crawler crane supporting the leader 2. The dotted circles in FIG. 7 indicate already excavated locations.

If necessary, excavation driving with both auger screws 5 and 5 and steel sheet piles 8 and 8,
And, the steps of pulling up the auger screws 5, 5 and the casings 6, 6 are repeated to obtain the required number of steel sheet piles 8 on one side.
.. are driven in the same direction at every interval S, but if the required number is finished with six steel sheet piles 8 on one side as shown in FIG. 8, then as shown in FIG. In the state in which the direction of the steel sheet pile 8 suspended in each casing 6 is rotated in the opposite direction with respect to the already driven steel sheet pile 8 shown in FIG. 5, 5 are the tip side of the row of already driven steel sheet piles, that is, between the fourth steel sheet pile 8 and the fifth steel sheet pile 8 from the left in FIG. 8 and the fifth steel sheet pile 8 and the sixth steel sheet. The sheet is moved to the non-driving position between the sheet piles 8. That is, the auger screws 5, 5 located at the positions shown in FIG. 8 are moved backward to the left by ½ of the space S (width of the steel sheet pile 8). Then, while excavating at this position in the same manner as described above, the two steel sheet piles 8, 8 suspended in opposite directions in the casings 6, 6 are driven to a predetermined depth, and at the time of driving the steel sheet pile 8, the steel sheet pile 8 is cut. 8
By engaging the opposite end portions (engagement portion 8a) of the steel sheet pile 8 and the already driven steel sheet pile 8 with each other, the state shown in FIG. 8 is obtained.

After that, by repeating the above steps, as shown in FIG. 8, a series of steel sheet piles consisting of, for example, 12 steel sheet piles 8 in which the respective steel sheet piles 8 are alternately connected in the opposite direction. Can be formed. As shown in FIG. 8, when the driving of the steel sheet piles 8 on the one side is finished and then the driving of the steel sheet piles 8 on the opposite side is completed, in this embodiment, as shown in FIG. , 5 is moved backward from the final driven steel sheet pile 8 side of the six steel sheet piles 8 on one side by the width of the sheet pile 8 to the left, and the driving of the opposite steel sheet pile 8 on the opposite side is started. Both auger screws 5, 5 are moved from the side of the final driven steel sheet pile 8 to the side of the first already driven steel sheet pile 8 as they are, and from the side of the first already driven steel sheet pile 8 side to the reverse steel sheet pile 8
You may make it start driving.

When the direction of the steel sheet pile 8 suspended in each casing 6 is made opposite to the already driven steel sheet pile 8 as described above, the casing rotation drive means 22 as shown in FIG. 4 is used. Just drive it. That is, the operation of the motor causes the cylindrical member 20a to rotate 180 degrees from the initial position through the worm 24 and the worm wheel 23, thereby reversing the casing 6 and reversing the position of the chuck device 7, whereby the steel plate is rotated. The sheet pile 8 can be suspended in the opposite direction to the already driven steel sheet pile 8. When the casing 6 is rotated in this manner, at the time of the driving operation, the driving apparatus as a whole only needs to be linearly moved by the crawler crane, which facilitates the operation.

In the above case, even if the casing 6 is not rotated and the chuck device 7 is left at the fixed position as it is, and the entire striking device is inverted by a crawler crane, the steel suspended in each casing 6 is also suspended. The direction of the sheet pile 8 can be reversed with respect to the already driven steel sheet pile 8.

Further, in the above embodiment, a plurality of steel sheet piles 8 are used.
Although the description has been given of the case of forming the linear rows of steel sheet piles by connecting them in a straight line, the method of the present invention is also applicable to the case of forming the curved rows of steel sheet piles. When forming eight rows of curved steel sheet piles such as arcs, both auger screws 5 and 5 are lifted and lowered by the turning drive means 4 as described above.
Since it can be swung with a fixed position (that is, a pivotal portion) as a swivel fulcrum, by swiveling both auger screws 5, 5 by a required angle each time two steel sheet piles 8, 8 are driven, The work of driving steel sheet piles can be performed easily. Further, the turning of the auger screws 5, 5 by the turning drive means 4 is not limited to the case where the curved steel sheet pile 8 rows are formed, and for example, the linear steel sheet pile 8 rows and the linear steel sheet pile 8 rows may intersect. It can be effectively utilized for driving work of the steel sheet pile 8 at various corners, or driving work of the steel sheet pile 8 in a place where the crawler crane supporting the leader 2 cannot move due to an obstacle or the like.

Next, a method of pulling out the steel sheet pile 8 from a series of steel sheet pile rows driven into the ground by using the driving device used for the steel sheet pile driving method will be described with reference to FIG. First, the pair of auger screws 5 and 5 are two steel sheet piles 8 and 8 in the same direction every other one from the left end side in the figure of the 8 rows of steel sheet piles driven in the illustrated state of FIG. The chuck devices 7 are arranged at positions adjacent to the respective inner surface sides, and the chuck devices 7 are arranged on the sides corresponding to the steel sheet piles 8 and 8, respectively, and the ground is excavated to a predetermined depth in this state. Then, after the two steel sheet piles 8 are suspended by the chuck device 7 of each casing 6 and pulled out, the auger screws 5 and 5 are arranged at the arrangement intervals of the auger screws 5 from the already pulled-out steel sheet pile positions on the front side. Same spacing S as S
The two steel sheet piles 8, 8, which are in the same direction at the following intervals, are placed at positions adjacent to each other on the inner surface side, and the excavation and extraction steps are performed in the same direction for every other sheet. Repeat until the right end side in the figure of a certain row of steel sheet piles. then,
With the chuck device 7 in the opposite direction, the above-described excavation and lifting / drawing of steel sheet piles from the right end side in the figure of the 8 rows of reversely undrawn steel sheet piles embedded in every other reverse direction. It is possible to pull out all the steel sheet piles 8 by repeatedly performing the reverse non-pulled steel sheet piles 8 row to the left end side.

In pulling out the steel sheet pile, when the chuck device 7 for suspending the steel sheet pile is turned in the opposite direction, the casing 6 is reversed by the casing rotation drive means 22 described above. Further, the crawler crane that supports the leader 2 may be moved back and forth once along the eight rows of steel sheet piles.

FIG. 9 shows another embodiment of the auger screw rotation driving device and the casing rotation driving means in the steel sheet pile driving device. The auger screw rotation driving device 33 is configured to individually rotate and drive each auger screw 5, and two motors 34, 34 are provided in the central portion of the housing 4a.
The gear 35 provided on the output shaft of the gear 3 is meshed with the gear 36 provided integrally with and concentrically with each auger screw 5, and by activating each motor 34, the gear 3
The auger screw 5 can be rotated via 5, 36. According to this auger screw rotation driving device, both auger screws 5 and 5 can be rotated in arbitrary directions.
Since the ground excavation can be effectively performed by rotating 5 in opposite directions, this auger screw rotation drive device is effective.

Further, the casing rotation drive means is provided with a large gear 38 concentrically on a tube body 37 coaxially connected to the upper end of each casing 6, and a motor 39 on the housing 4a side. A gear 40 fixed to the output shaft is meshed with the large gear 38, and the motor 39 is activated to rotate the tubular body 37 via the gear 40 and the large gear 38 to rotate the casing 6.
In FIG. 8, reference numeral 41 designates a cylindrical support 42 to which the gear 36 on the auger screw rotation driving means side is attached, and a large gear 38 on the casing rotation driving means side, respectively, by bearings 43.
It is a support ring that is rotatably supported via a housing and is attached to the housing 4a.

In the above embodiments, the pair of auger screws 5, 5 on both sides are arranged side by side, but in the present invention, three or more auger screws 5 may be arranged side by side. It is possible, and in any case, the interval between the auger screws 5 is set to the interval S corresponding to twice the steel sheet pile width W.

In the above embodiment, the steel sheet pile driving device has been described, but it goes without saying that the device can be used as it is as a steel sheet pile drawing device.

[0051]

According to the steel sheet pile driving method according to claim 1 of the present invention, a plurality of steel sheet piles can be simultaneously driven, and the direction of the steel sheet pile is changed every time one steel sheet pile is driven as in the conventional case. Since there is no need to change the number of steel sheet piles in the same direction and the required number of steel sheet piles on one side can be continuously driven, the work efficiency of driving the steel sheet piles can be improved and the driving cost can be greatly reduced.

In particular, when a plurality of steel sheet piles are first driven, the resistance of only the underground soil is applied,
When driving the next steel sheet pile along the driven steel sheet pile, in the conventional case, one edge of the steel sheet pile to be next driven has already been driven along the edge of the steel sheet pile that has been driven. Since it is driven while engaging with a certain steel sheet pile, one edge of the driven steel sheet pile receives both the resistance of soil in the ground and the resistance of the existing steel sheet pile, while the other edge of the steel sheet pile is ground. Since it receives only the resistance of medium soil, the resistance between both edges becomes unbalanced, and it is difficult to maintain the straightness at the time of placement. However, in the present invention, since the next steel sheet pile is driven between the plurality of steel sheet piles that have been driven, the resistance applied to both end edges of the steel sheet pile is the same, and this is possible. Therefore, it is possible to maintain the straightness and efficiently perform the placing work.

Further, in the steel sheet pile pulling-out method according to claim 2 of the present invention, a chuck device for simultaneously chucking a plurality of steel sheet piles placed in the ground is provided with a width W of the steel sheet pile of 2.
A plurality of steel sheet piles in the same direction are first pulled out at the same time by the chuck device at intervals S corresponding to double the length, and then a plurality of steel sheet piles facing in the opposite direction are pulled out at the same time. Therefore, the work efficiency of pulling out the steel sheet pile can be greatly improved compared to the conventional method.

According to the steel sheet pile driving method of claim 3 of the present invention, a plurality of steel sheet piles can be simultaneously driven, and the direction of the steel sheet piles does not change each time one steel sheet pile is driven. Since the required number of steel sheet piles in the same direction are continuously driven on each side, it is possible to extremely efficiently perform the work of driving a large number of steel sheet piles.

According to the steel sheet pile drawing apparatus of the fourth aspect of the present invention, the steel sheet pile driving method according to the present invention can be easily carried out.

According to the steel sheet pile drawing apparatus of the fifth aspect, the steel sheet pile drawing method according to the present invention can be easily carried out.

According to the sixth and seventh aspects of the present invention, the position of the chuck can be easily changed when the steel sheet pile is driven in or pulled out, and the direction of the steel sheet pile can be easily changed.

Further, according to claim 8 of the present invention, it is possible to freely change the driving direction of the steel sheet pile by reducing the movement of the pile driver main body such as a crawler crane as much as possible, and to increase the work efficiency accordingly. be able to.

[Brief description of drawings]

FIG. 1 is a side view of a steel sheet pile driving apparatus according to the present invention.

FIG. 2A is a front view of the above-mentioned apparatus, and FIG. 2B is a cross-sectional view of an auger screw portion.

FIG. 3 is a plan view of an auger screw rotation driving device portion in the above steel sheet pile driving device.

FIG. 4 is a vertical cross-sectional view of an auger screw rotation driving device portion in the above steel sheet pile driving device.

FIG. 5 is a side view showing a chuck device attached to a casing.

FIG. 6A is a side view of a casing on which a steel sheet pile is mounted, and FIG. 6B is a cross sectional view thereof.

FIG. 7 is an explanatory diagram showing a construction sequence according to an embodiment of the steel sheet pile driving method of the present invention.

FIG. 8 is an explanatory view showing a construction sequence according to another embodiment of the steel sheet pile driving method of the present invention.

FIG. 9 is a vertical sectional view showing another embodiment of the auger screw rotation drive device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lifting body 2 Leader 3 Fixed chain 4 Swiveling drive means 4a Housing 5 Auger screw 6 Casing 7 Chuck device 8 Steel sheet pile 9 Auger screw rotation drive device 10 Motor 22 Casing rotation drive means 33 Auger screw rotation drive device 34 Motor W Steel sheet pile Width S Arrangement distance between auger screws M Lifting device

Claims (8)

[Claims] 1. A plurality of steel sheet piles are suspended by a chuck device in a state in which they are oriented in the same direction with a spacing S corresponding to twice the width W of the steel sheet piles. In this state, the plurality of steel sheet piles are simultaneously placed in the ground. It is driven to a predetermined depth, and then a plurality of steel sheet piles are suspended at the same interval S as the above with the direction opposite to the direction of the already driven steel sheet piles. A steel sheet pile driving method in which steel sheet piles can be driven so that the directions thereof alternate with each other. 2. A plurality of steel sheet piles that are placed in the ground are first separated into a plurality of steel sheet piles that are placed in the ground by a chuck device that is provided at intervals S corresponding to twice the width W of the steel sheet piles. A method for pulling out steel sheet piles that chucks steel sheet piles and pulls them out at the same time, and then chucks a plurality of steel sheet piles facing in opposite directions and pulls them out at the same time. 3. A plurality of steel sheet piles are suspended by a chuck device in a state in which they are oriented in the same direction with a spacing S corresponding to twice the width W of the steel sheet piles. In this state, the plurality of steel sheet piles are predetermined in the ground. Driving to a depth, and then, similarly, a plurality of steel sheet piles are driven at a distance S from one end of the already driven steel sheet pile in the same direction with the distance S, and thereafter, the required number of steel sheet piles on one side is similarly obtained. Are driven in the same direction at the intervals S, and then a plurality of steel sheet piles are also arranged at the same intervals S as described above with the direction opposite to the direction of the already driven steel sheet pile, and one end of the already driven steel sheet pile row. Steel sheet piles in which the steel sheet piles can be driven in the same manner as described above from the uninjected portion between the already driven steel sheet piles on the side to the other end side of the already driven steel sheet pile row. Board driving method. 4. An elevating body capable of ascending and descending along a leader, a plurality of auger screws juxtaposed on the elevating body at intervals S corresponding to twice the steel sheet pile width W, and the auger screws. Steel sheet pile driving device comprising an auger screw rotation drive device for rotating and driving, a casing externally fitted to each auger screw, and a chuck device for suspending a steel sheet pile provided on an outer peripheral surface of each casing. . 5. An elevating body capable of moving up and down along a leader, a plurality of auger screws arranged side by side on the elevating body at intervals S corresponding to twice the steel sheet pile width W, and the auger screws. Steel sheet pile withdrawing device comprising an auger screw rotation driving device for rotating and driving, a casing externally fitted to each auger screw, and a chuck device for suspending a steel sheet pile provided on an outer peripheral surface of each casing. . 6. The steel sheet pile driving apparatus according to claim 4, further comprising a casing rotation drive means for rotating the casing. 7. The steel sheet pile withdrawing apparatus according to claim 5, further comprising a casing rotation drive means for rotating the casing. 8. The driving device for steel sheet pile according to claim 4, further comprising a turning drive means 4 for turning the steel sheet pile in a horizontal direction around the leader side.