JPH06346441A - Method for driving pile using hull and device thereof - Google Patents

Abstract

PURPOSE:To make the work driving pile into the sea-bottom foundation by providing a buffer device to a device for a driving pile equipped on a hull to prevent an attitude variation of a vibration exciter by pitching of the hull. CONSTITUTION:A driving device 1 is constituted of a vibration exciter 8 provided on a hull 11 and suspended by a boom 6 capable of elevation/depression through a wire 9, and a driven pile 7 can be held at the lower part of the vibration exciter 8. In the case where the hull 11 is lifted up by pitching, in order to prevent an attitude variation upward in the driving device 1 together with the hull 11, a buffer device 2 formed out of an appropriate horseshoe metal fixture 3 and upper and lower interlocking plates 4 and 4a is provided. According to the constitution, in the case where pitching occurs in the hull 11 by various kinds of waves, the hull 11 is lifted, a drooping length of the boom 6 is automatically extended, and an attitude variation upward in the vibration exciter 8 can be prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hull provided with a boom having a vibration oscillating machine for suspending a driving pile for driving a pile of steel sheet pile on the seabed. However, even if it becomes levitated through pitching due to the influence of various waves,
By automatically extending the hanging length from the boom of the exciter suspended on a boom that changes its posture together with the hull, TECHNICAL FIELD The present invention relates to a driving method and a device for driving a driving pile using a hull capable of reliably driving a driving pile such as a steel sheet pile without changing the height position of the ship.

[0002]

2. Description of the Related Art Conventionally, when driving a pile of steel sheet pile or the like into the seabed as described above, as shown in FIG.
A boom 14 such as a crane and a wire suspended from the tip of the boom 14 so that a vibrator 16 that is stretched on the boom 14 and that holds a driving pile 15 such as a steel sheet pile can be suspended.
17 and a placing device 20 provided with a wire winding device 18 for feeding and rewinding the wire 17 are appropriately used, and the driving pile 15 such as the steel sheet pile is used for the exciter. It is possible to drive the submarine ground 21 or the like through the self-weight of 16 and the vertical vibration generated by the vibration unit 16a.

[0003]

However, the driving pile 15 such as a steel sheet pile is attached to the seabed 21 through the above-mentioned conventional placing device 20.
However, there were the following problems when it was placed in a room.

That is, in the case of performing the construction work of driving piles such as steel sheet piles on the seabed 21 and the like, the vibrator 16 holding the driving piles 15 such as steel sheet piles is suspended. Waves of various sizes will hit the hull 19 equipped with the boom 14.

Therefore, as described above, various sizes of waves are driven into the pile.
When the waves are struck against the hull 19 during the construction work of 15 and the wave size, cycle, etc. are significantly large with respect to the entire length, width and drainage of the hull 19, pitching on the hull 19 will occur. Will occur.

Therefore, especially when the hull 19 is suddenly floated to float upward (arrow D) due to pitching during the construction work, the boom 14 also changes its posture upward (arrow E). , A wire for pulling up the exciter 16 suspended from the boom 14 to suspend the exciter 16
As shown in FIG. 5, the rubber damper 16b for absorbing vibration, which is provided in the vibration exciter 16, is also used to make the sudden vibration 16
It was damaged to be torn off by the upward pulling force (arrow F).

[0007] Therefore, when the construction work for driving piles such as steel sheet piles is to be carried out in the sea or the like, it is necessary to specify the working day of the season when the season is relatively calm or the month. In addition, in the case of bad weather such as strong winds, the construction work of the driving pile itself must be canceled, so the number of days and labor cost related to the series of work, and the rent of various equipment are also remarkable. Along with the soaring price, there was a very serious problem that it was difficult to set a reliable construction period.

However, the present invention solves all the above problems, and when a driving pile such as a steel sheet pile is driven on the seabed, a vibration exciter that holds the driving pile is suspended. Even if the hull that has caused the posture change as much as possible to be in a floating state through pitching due to the influence of various waves and the boom that suspends the exciter is suddenly pulled up, Make sure that the driving piles, such as steel sheet piles, that are held by the exciter are driven into the seabed without causing any posture changes and without changing the height position from the seabed. Driving using an extremely excellent hull capable of not only breaking the wire that suspends the exciter, but also damaging the rubber damper for vibration absorption provided in the exciter An object of the present invention is to provide a method for placing piles and a device therefor.

[0009]

In order to solve the above problems, the present invention invents a driving method and a device for driving a driving pile using a completely new hull, and takes the following means.

That is, according to the present invention, a boom 6 such as a crane provided on the hull 11 and an exciter 8 suspended from the boom 6.
A driving method of a driving pile using the driving device 1 for driving a driving pile, comprising: the driving device when the hull 11 is levitated through pitching due to the influence of various waves. The shock absorber 2 provided on the first unit automatically extends the hanging length from the boom 6 of the shaker 8 suspended from the boom 6 that moves upward together with the hull 11 to automatically increase the hanging length. 8 is a method for preventing upward posture fluctuation.

Further, the present invention as a device for carrying out the method for driving a driving pile using the above-mentioned hull, the present invention provides a boom 6 such as a crane provided on the hull 11 and a boom 6 suspended from the boom 6.
Further, there is provided a driving apparatus 1 for a driving pile, which comprises a vibrator 8 capable of holding a driving pile 7 such as a steel sheet pile, in which the hull 11 is pitched by the influence of various waves. When it is levitated via the hull 11, the hanging length of the exciter 8 suspended from the boom 6 that changes its posture together with the hull 11 is automatically extended to raise the suspension. The shock absorber 2 is provided to prevent the posture of the shaker 8 from changing upward.

[0012]

In the method and apparatus for driving a driving pile using the hull having the above-mentioned structure, when the hull 11 is in a floating state through pitching due to the influence of various waves, the driving apparatus 1 A vibration exciter 8 suspended from a boom 6 that moves upward together with the hull 11 by a shock absorber 2 provided in the
Since the hanging length of the boom 8 from the boom 6 is automatically extended to prevent the posture change of the vibrator 8 upward,
Wires for inadvertently pulling out the driving piles 7 which are held by the excavator 8 at a predetermined depth from the seabed 12 or suspend the exciter 8. The height of the vibration generator 9 from the seabed is kept constant without tearing the vibration generator 9 by abrupt pulling or damaging the vibration absorbing rubber damper provided in the vibration generator 8. I can keep it.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a boom 6 composed of a crane arm which is provided on a hull 11 so as to be lifted and lowered, and a driving pile 7 suspended from the boom 6 and capable of holding a driving pile 7 such as a steel sheet pile. A driving device for a driving pile including an exciter 8 is shown, and 10 is a wire winding for sending and unwinding the wire 9 so that the length of the wire 9 provided on the boom 6 can be sequentially changed. 1 shows a wire winding device 10 including a mounting drum 10a.

Reference numeral 2 denotes a shock absorber, and as shown in FIG. 2, a substantially horseshoe-shaped suspender 3 which can be engaged with a wire 9 suspended from one end of the boom 6 and the substantially horseshoe-shaped suspender 3 facing each other. A pair of first guide rods 3a, one end of which is rotatably supported and the other end of each of the first guide rods 3a, are reciprocally inserted into each of both ends of the first guide rod 3a. One end side of a second guide rod 3b, the other end side of which is pivotally supported by a suspending rod 14 capable of suspending the vibrator 8 through two suspending tools 14a, is inserted so as to prevent downward pullout. Upper locking plate 4 and the second guide rod
The other end of 3b is reciprocally inserted and the first
Of the lower guide plate 3a of the first guide rod 3a and the second guide rod 3b, the lower guide plate 3a of which is inserted so as to prevent the guide rod 3a of the first guide rod 3a from slipping upward, and the second guide rod 3b. It consists of 16 and.

Reference numeral 5 denotes a drive hydraulic control device for the vibrator 8, and reference numeral 5a denotes a hydraulic hose provided between the drive hydraulic control device 5 and the vibrator 8.

Reference numeral 12 denotes the seabed on which the above-mentioned driving piles 7 are driven, and 13 denotes the sea in which the hull 11 floats.

The driving device for the driving pile used in the driving method for driving the driving pile using the hull in this embodiment has the above-mentioned structure. The case of use will be described.

First, as shown in FIG. 1, the hull 11 suddenly floats upward (arrow A) through pitching by various waves, and the boom 6 of the hull 11 also rises upward (arrow B). The posture will change rapidly.

Therefore, as the boom 6 of the hull 11 suddenly changes its position upward (arrow B) as described above, the wire winding device 10, the wire 9 and the shock absorber 2 suspended by the wire 9 are provided. Each of them will instantly generate a tensile force several times higher than usual, and in particular, the buffer device 2 including the total weight of the driving pile 7 and the vibration exciter 8 will receive the maximum tensile force. However, the shock absorber 2 is a pair of one end of which is rotatably supported by the opposite ends of the substantially horseshoe-shaped suspender 3 which is locked to the wire 9 suspended from one end of the boom 6. The first guide rod 3a and the other end side of the first guide rod 3a are reciprocally inserted, and the exciter 8 is suspended via two suspension members 14a. One end side of the second guide rod 3b whose other end side is pivotally supported by a possible suspension rod 14 is designed to prevent downward pull-out. The inserted upper locking plate 4 and the other end side of the second guide rod 3b are reciprocally inserted, and the first guide rod 3a is inserted so as to prevent upward disengagement. Coil spring 1 externally fitted to the lower locking plate 4a, the first guide rod 3a and the second guide rod 3b.
Since it is composed of 5 and 16, even if the hull 11 is levitated through pitching due to the influence of various waves, the suspension of the exciter 8 suspended from the boom 6 from the boom 6 As shown in FIG. 3, the length can be automatically extended (arrow C) to prevent the posture change of the vibrator 8 upward.

Therefore, even when the boom is suddenly pulled up, the posture of the exciter is not changed upward, and the height position from the seabed is completely changed. Without being able to reliably drive a pile of steel sheet pile or the like held by the exciter to the seabed, etc., the wire to suspend the exciter or the exciter It is possible to eliminate damage to the vibration absorbing rubber damper provided.

Although a crane is used as the boom in the above embodiment, the specific lifting mechanism and horizontal rotating mechanism of the crane are not limited, and the number of cranes, Needless to say, the shape and the number and type of wires hung from the crane are not limited, but the point is that if the total weight of the exciter holding the driving piles can be easily suspended, The configuration is not limited to the crane, and may be, for example, one made of H steel, a rod-shaped pipe, or the like, and the type and shape of the boom are not limited, and the hull including the boom may be concrete. The type, shape, size, etc. are not limited.

Further, in the above embodiment, the shock absorber is
A substantially horseshoe-shaped suspender that can be locked to a wire that is suspended from one end of the boom, and a pair of first suspensions that are rotatably supported at one end sides of the opposite ends of the substantially horseshoe-shaped suspension. The guide rod and the other end side of the first guide rod are reciprocally inserted, and the other end side is attached to a suspension rod body capable of suspending the exciter via two suspension members. One end side of the pivotally supported second guide rod is inserted so that one end side of the second guide rod is inserted so as to prevent the second guide rod from falling downward, and the other end side of the second guide rod is reciprocally inserted. The first guide rod is composed of a lower locking plate inserted so as to prevent the upper guide rod from coming off, and a coil spring externally fitted to each of the first guide rod and the second guide rod. However, for example, the coil spring may be a leaf spring or the like, and the first guide rod and the second guide rod may be used.
The number of guide rods may be the same, or one of the guide rods may be arranged around the other guide rod in a circular or radial manner. As long as it is possible to automatically extend the hanging length from the boom of the vibration oscillating machine suspended from the boom for carrying out The specific type, shape, mechanism, location, etc. are by no means limited,
For example, a shock absorber may be provided in the exciter or in the boom or the wire winding device, and the substantially horseshoe-shaped suspension of the shock absorber is not limited to the shackle shape, and for example, a hook (not shown) or A shock absorber (not shown) having a predetermined opening / closing portion and a predetermined locking mechanism provided in the opening / closing portion.
It goes without saying that may be.

Further, in the above-described embodiment, the wire winding device has a structure in which the wire for suspending the vibration oscillating device is fed out or wound up through the wire winding drum. The shape, quantity, etc. are by no means limited, the drive mechanism of the wire winding drum may be either a hydraulic motor or an electric motor, and the location of the wire winding device is not limited to be on board and is housed in the ship. May be.

Further, in the above embodiment, the shock absorber is
The wire attached to the boom and pulled through the boom is stored in advance by loosening it for a predetermined length using a plurality of drive sheaves or drive gears, and then by driving the drive sheaves or drive gears. The wire may be extended at the time of pitching the hull. In short, if the shock absorber is provided in the driving device for the driving pile, each member and the rising member constituting the shock absorber and the driving device are provided. All the specific configurations of the shaker and the like can be arbitrarily modified within the scope intended by the present invention.

[0026]

As described above, in the method for driving a driving pile using a hull according to the present invention, when the hull is floated through pitching due to the influence of various waves, it is driven. A suspension device provided in the installation device automatically extends the hanging length from the boom of the exciter suspended from the boom that changes its posture together with the hull to the upper side of the exciter. In order to prevent the posture from changing, the driving pile that is held by the exciter and is driven to a predetermined depth through the exciter is inadvertently pulled out from the seabed, or the like. The wire that suspends the exciter is torn off by abrupt pulling, and the vibration absorbing rubber damper provided in the exciter is not damaged and the height of the exciter from the seabed is high. The pile position of steel sheet piles held by the exciter can be It can be pouring indeed seabed, and the like.

Further, according to the driving apparatus for driving the driving pile using the hull according to the present invention, the wire for suspending the vibration exciter is broken, and the vibration absorbing device provided in the vibration exciter is further absorbed. Since the rubber damper for use can be used over and over again without damaging it, the cost of repairing and replacing parts of each equipment can be minimized.

Therefore, even when the construction work for driving piles such as steel sheet piles is performed, the date of the construction work can be specified as the season or the month when the wave is relatively calm, or in bad weather such as strong wind. At that time, since it is possible to continue the construction work without worrying about the inconvenience that the construction work of the driving pile itself has to be stopped, the number of days and labor costs related to a series of work, and further Came to have a special effect of being able to provide a driving device for driving piles using an extremely excellent hull in which the rent of various equipment can be kept low and a reliable construction period can be set.

[Brief description of drawings]

FIG. 1 is a side view of a driving pile driving apparatus using a hull according to an embodiment of the present invention in a used state.

FIG. 2 is a partial cross-sectional front view of a shock absorber used in a driving pile driving device using a hull according to the present invention.

FIG. 3 is a partial sectional front view showing an operating state of a shock absorber used in a driving device for driving a pile using a hull according to the present invention.

FIG. 4 is a side view of a conventional driving apparatus for a driving pile using a hull in a used state.

FIG. 5 is a partial cross-sectional front view showing a state during pitching of an exciter in a driving device for driving a driven pile using a conventional ship.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Driving device for driving piles 2 ... Shock absorbing device 3 ... Substantially horseshoe-shaped suspension 3a ... Pair of first guide rods 3b ... Second guide rod 4 ... Upper locking plate 4a ... Lower locking plate 6 ... Boom 7 ... Driving pile 8 ... Vibrator 9 ... Wire 10 ... Wire winding device 11 ... Hull 12 ... Undersea ground 13 ... Sea 14 ... Suspended rod

Claims (2)

[Claims] 1. A driving pile driving device (1) comprising a boom (6) such as a crane provided on a hull (11) and an exciter suspended on the boom (6). A method for placing a driving pile, which was installed in the placing device (1) when the hull (11) was levitated through pitching due to the influence of various waves. ) Automatically extends the hanging length from the boom (6) of the exciter (8) suspended from the boom (6) that moves upward together with the hull (11), and Machine
(8) A method for driving a driving pile using a hull, characterized by preventing the posture from changing upward. 2. A vibration exciter capable of holding a boom (6) such as a crane provided on a hull (11) and a pile (7) suspended from the boom (6) and driven by a steel sheet pile or the like. (8) A driving device (1) for driving a pile, comprising the hull (1
When (1) floats through pitching due to the influence of various waves, the vibration of the exciter (8) suspended on the boom (6) that changes its posture with the hull (11) upwards. A hull characterized by being provided with a shock absorber (2) for automatically extending the hanging length from the boom (6) to prevent upward fluctuation of the exciter (8). The driving device for the driven pile used.