JPH073068B2 - Underwater pile driving method and its equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to an underwater pile for driving piles for various pile standing structures such as breakwaters, sea berths, and aquaculture facilities, or for other uses into a subseabed. Improvement of the driving method and its equipment.

[Conventional technology]

Conventionally, as a construction method of this type, as shown in FIG. 12 (a) and (b), the required number of temporary piles (H steel) 1 are driven into the water bottom ground G, and H steel or A method of driving a pile a, such as a steel pipe pile, using a double girder-shaped frame body 3 configured by horizontally and horizontally straddling a steel material 2 such as channel steel, and using the steel material 2 forming the eyes as a conducting material, or
As shown in Figs. 13 (a) and 13 (b), a method is known in which a steel jacket 5 manufactured on land is towed to a pile driving site in advance and the vertical cylinder 6 is used as a guide material to drive the pile a. Has been.

[Problems to be solved by the invention]

However, in the former case, the horizontal and vertical steel materials 2 that make up the cross-shaped frame 3
Therefore, since the pile a is only locally supported and guided, it is difficult to accurately build the pile a at a planned point, and the pile a tends to incline during driving. It was difficult to maintain the spacing and the verticality of the piles accurately.

Further, in the latter case, although there is no inconvenience as in the former case, the production of the jacket 5 itself is difficult and the production cost is high. Further, it is an indispensable condition for pile driving that the jacket 5 is installed horizontally, but for this reason, there is a problem that the sloped ground first requires the work of leveling it horizontally.

An object of the present invention is to solve the above-mentioned drawbacks of the conventional method, to accurately install a pile at a planned point, and to improve the accuracy of driving a pile in the vertical direction.

[Means for solving problems]

In the underwater pile driving method of the present invention, first, a plurality of temporary piles 7 are driven into the water bottom ground G, and the temporary vertical beam 8 and the temporary horizontal beam 8'are laid across the water projecting upper end of each temporary pile 7. Install the temporary base A.

Next, a plurality of specific ones among a plurality of corner portions formed by the plurality of vertical beams 11 and the horizontal beams 12 forming the lattice body, for example, 13 _{1 to} 13 ₄ , 14 _{1 to} 14 ₄ , 15 ₁ to 15 _The horizontally arranged ruler frame B having 4 as a relational position that exactly matches the planned building position of the piles a arranged vertically and horizontally at a required interval is mounted on the temporary base A.

In the machine frame 22 integrally assembled by the plurality of beam members 17, 17 'and the connecting bars 18, 18', the plurality of cylindrical bodies 23 ₁ to 23 ₄ ,
The vertical driving ruler frame C is arranged in a relational position that exactly corresponds to one in a horizontal row among the planned construction positions of the piles a to be vertically and horizontally arranged at a required interval. The cylinders 23 ₁ to 23 ₄ are precisely aligned with the corner portions 13 _{1 to} 13 ₄ , 14 _{1 to} 14 ₄ or 15 ₁ to 15 ₄ which form the row of the horizontal arrangement ruler frame B, and the horizontal arrangement ruler. Mounted and fixed on the frame B.

The stakes a, the insert from above the cylindrical body 23 _{1-23 4} vertical driving ruler frame C, the cylindrical body 23 _{1-23 4} and the corresponding matched to that corner portion _131-134, 14 ₁ ~ 14 ₄ , 15 ₁ ~ 15 ₄ will be built and placed on the water bottom ground.

After that, the vertical driving ruler frame C is attached to each of the cylindrical bodies.
23 ₁ to 23 ₄ are moved and installed at positions exactly matching the corner portions 13 _{1 to} 13 ₄ , 14 _{1 to} 14 ₄ or 15 ₁ to 15 ₄ of the next row of the horizontally arranged ruler frame B, and The pile a of the next row is built and driven by the same procedure as the above.

The underwater pile driving apparatus according to the present invention includes a temporary base A formed by horizontally laying a vertical vertical beam 8 and a horizontal horizontal beam 8'on the water projecting upper ends of a plurality of temporary piles 7 cast on a water bottom ground G; a plurality of longitudinal beams 11 and a plurality of specific ones 13 ₁ to 1 of a plurality of corner portions cross beam 12 and is formed to constitute the
Horizontally arranged ruler frame B in which 3 ₄ , 14 _{1 to} 14 ₄ and 15 ₁ to 15 ₄ are brought into a relational position that exactly corresponds to a planned build-up position of the pile a which is arranged at required intervals in length and width And multiple beam members 17,17 ', 18,18' and connecting bars 19,20,2
0 ', in the machine frame 22 being assembled together by 21, the cylinder 23 _{1-23 4} a plurality of, one horizontal row in like an anchor intended location of the piles a which are arranged at predetermined intervals in the vertical and horizontal Vertically driven ruler frame C that is arranged in a row at a relative position that exactly matches that of
And the horizontally arranged ruler frame B is mounted on the temporary base A, and the vertically driven ruler frame C is mounted on the horizontally arranged ruler frame B.
Mounted, the piles a, cylinder 23 ₁ of the vertical driving ruler frame C
To 23 ₄ and the corresponding matched to that horizontally disposed ruler frame corners _131-134 of formed by 14 ₁ to 14 _4, 15 ₁ to 15 ₄ to pouring with Tatekomu the sea bed soil G through.

[Action]

According to the underwater pile driving method of the present invention, by the horizontally arranged ruler frame body on the temporary base, and further by the vertically driven ruler frame body, the pile can be erected while being exactly aligned with the planned position, Moreover, it can be easily driven into the subseabed while maintaining its verticality accurately.

In addition, the stakeout is moved to the next scheduled position by moving the vertically driven ruler frame body onto the horizontally arranged ruler frame body.
It can be repeated easily.

Further, by sequentially moving the horizontally arranged ruler frame body onto the temporary base, it is possible to perform pile driving in a wide water area regardless of the size of the horizontally arranged ruler frame body.

According to the underwater pile driving device of the present invention, the horizontally arranged ruler frame is
Since it can be manufactured separately on land, unlike the conventional case where the planned pile building position is sectioned and formed on the temporary stand itself, the manufacturing work is extremely easy and
As described above, the merit that it can be moved to the temporary base and used repeatedly is great.

In addition, the vertically driven ruler frame enables the vertical support of the pile with high accuracy by mounting and using it on the temporary base, more precisely, on the horizontally arranged ruler frame. It's difficult to manufacture like the jacket 5, the cost of manufacturing is high, and again, the jacket 5
It does not require the troublesome work of horizontally installing the

〔Example〕

A is a temporary base installed in the construction water area of the pile standing structure to be constructed, which is a plurality of H steel temporary piles 7 ...
Are placed on the water bottom ground G at a required position, for example, along a rectangular contour line at a required interval, and the H steel temporary vertical beam 8 and the horizontal beam 8'are straddled over the water-projecting upper ends thereof, and An H steel temporary reinforcement cross beam 10 is laid across the underwater protruding upper end of an H steel temporary reinforcement pile 9 ... Cast on an appropriate partition line crossing the inside of the wire.

This temporary base A is for mounting and supporting a horizontally arranged ruler frame B, which will be described later, and a vertically driven ruler frame C, which will be mounted on the horizontally arranged ruler frame B, as described above. Unlike the double girder frame 3 in the conventional construction method, the pile a
The planned location for building is not divided by steel.

Therefore, the construction of the temporary base A itself is the construction of the temporary pile (H
This is much easier than if the upper end of the steel 1 must be accurately assembled.

The above horizontal arrangement ruler frame B includes a plurality of vertical beams 11 and horizontal beams 12.
The lattice body formed by vertically and horizontally assembling (using H steel in the present embodiment) at required intervals is a specific one of a plurality of corner portions formed by the vertical beam 11 and the horizontal beam 12, for example, FIG. Of 13
Preliminarily produced on land so that _{1 to} 13 ₄ , 14 _{1 to} 14 ₄ , 15 ₁ to 15 ₄ exactly correspond to the planned construction positions of the pile driving a arranged vertically and horizontally at a required interval. It is something to keep.

A reinforcing rod made of chevron steel is obliquely installed between the mutual surfaces of the vertical beams 11 and between the horizontal beams 12.

In the vertical driving ruler frame C, upper and left beam members 17, 17 'and lower left and right beam members 18, 18' (in this embodiment, H steel is used) are arranged at each corner of a vertically long quadrangle, The top and bottom are opened in the machine frame 22 in the state where these are integrally assembled by the upper surface connecting bar 19 ..., the front and rear surface connecting bars 20 ..., 20 '..., and the left and right side connecting bars 21. Cylindrical body made of steel pipe 23 ₁ ~ 2
3 ₄ are erected in rows at required intervals.

The vertical driving ruler frame C is cylinder 23 _{1-23 4} described above
The piles are prepared beforehand on land so that they are exactly aligned with the ones in the horizontal row of the planned positions of the piles a to be arranged vertically and horizontally with a required space.

The upper and lower ends of each of the cylindrical bodies 23 ₁ to 23 ₄ are connected to upper and left beam members 17, 17 ′ and lower left and right beam members 18, 18 ′ by connecting pieces 24, 25.
It is fixed by welding. Further, the cylindrical body 23 _1-23
The guide ₄ is provided with a guide 26 that expands its upper opening upward.

The pile a in the water area will be built and installed as follows.

First, the horizontally arranged ruler frame B is mounted on the temporary base A installed in the water area as described above by using a crane (Figs. 3 and 5), and then the horizontally arranged ruler frame is arranged. Mount vertically fixed ruler frame C on B using the same crane and fix it (Fig. 4).

The horizontally arranged ruler frame B is mounted so that the specific corner portions 13 _{1 to} 13 ₄ , 14 _{1 to} 14 ₄ , 15 ₁ formed by the vertical beams 11 and the horizontal beams 12 are mounted.
~ 15 ₄ is carried out so as to exactly match the planned build-up position of the pile a, and the vertical driving ruler frame C is mounted on the cylinders 23 ₁ to 23 ₄ by the horizontal arrangement ruler frame B. This is performed so that the corner portions 13 _{1 to} 13 ₄ in the first row are exactly aligned with each other.

Then, the pile a which hung by a crane and inserted from above the cylindrical body 23 ₁ of the vertical driving ruler frame C (FIG. 10), like an anchor on the sea bed soil G, the required pile in a known manner Drive into the bottom ground G with a machine (Fig. 11).

In this case, insertion into the cylinder 23 ₁ of the pile a, since it is guided by a guide 26 which widens upwards with its upper opening with a very easy, pile a in implantation cylinder 23
_Since it is supported and guided by ₁ , the verticality can be accurately maintained.

The same way, the pile a first row one after another and Da設through cylinder 23 _{2-23 4,} Then, the vertical driving ruler frame C
Was removed from the upper ends of the piles a that were once hoisted and placed by a crane, and the cylindrical bodies 23 ₁ to 23 ₄ were accurately placed on the corner portions 14 _{1 to} 14 ₄ of the second row of the horizontally arranged ruler frame B. installed fixed to the matching position and pouring the pile a in the same manner as described above through the cylindrical body 23 _{1-23 4} (Figure 1).

Similarly, the corner portions of the horizontal ruler frame B 15 ₁ to 1
Sequentially pouring the pile a to 5 _4.

This completes a series of pile driving work, but the shape and size of the horizontally arranged ruler frame B are naturally not limited to those of the present embodiment, and it is intended to drive the pile a. If the temporary base A is properly extended and installed in the water area to be moved, the horizontally arranged ruler frame B is moved to the upper surface thereof, and the above-mentioned pile driving work is repeated, desired pile driving can be performed in an arbitrary wide range. It is clear that you can do it.

〔The invention's effect〕

As is clear from the above description, according to the underwater pile driving method of the present invention, the pile is accurately positioned at the planned position by the horizontally arranged ruler frame body on the temporary base and the vertically driven ruler frame body further thereon. It can be built in line with, and can be easily driven into the subseabed while maintaining its verticality accurately.

In addition, the stakeout is moved to the next scheduled position by moving the vertically driven ruler frame body onto the horizontally arranged ruler frame body.
It can be repeated easily.

Further, by sequentially moving the horizontally arranged ruler frame body onto the temporary base, it is possible to perform pile driving in a wide water area regardless of the size of the horizontally arranged ruler frame body.

According to the underwater pile driving device of the present invention, the horizontally arranged ruler frame is
Since it can be manufactured separately on land, unlike the conventional case where the planned pile-in position is sectioned and formed on the temporary stand on site, the manufacturing work is extremely easy and
As described above, the merit that it can be moved to the temporary base and used repeatedly is great.

In addition, the vertically driven ruler frame enables the vertical support of the pile with high accuracy by mounting and using it on the temporary base, more precisely, on the horizontally arranged ruler frame. It's difficult to manufacture like the jacket 5, the cost of manufacturing is high, and again, the jacket 5
It does not require the troublesome work of horizontally installing the

In short, according to the present invention, it is difficult to accurately build the pile at the planned point, or the disadvantages such as the pile is likely to be inclined during driving, the pile center interval and the verticality of the pile are accurately obtained. All the drawbacks of the conventional method, such as difficulty in maintaining, are eliminated, and there is no need to preliminarily level the water bottom ground in advance, and the workability and economy of pile driving are improved. The sex is significantly improved as compared with the conventional one.

[Brief description of drawings]

The drawings show an embodiment of the present invention. Fig. 1 is an overall perspective view during pile driving, Fig. 2 is a side view of a temporary base, and Fig. 3 is a ruler frame horizontally arranged on the temporary base. FIG. 4 is a side view showing a state in which a body is mounted, FIG. 4 is a side view in which a vertically driven ruler frame body is further mounted on the horizontally arranged ruler frame body, and FIG. 5 is a plan view of a horizontally arranged ruler frame body, and FIG. The figure is a plan view of a vertically driven ruler frame, Fig. 7 is a side view of the same as above, Fig. 8 is a side view of the same as above, Fig. 9 is an enlarged cross-sectional view taken along line I-I of Fig. 7, and Fig. 10 is a pile. Fig. 11 is a side view of the state where the piles are built, Fig. 11 is a side view of the state where the piles are being laid, and Figs. 12 (a) and (b) are explanations of the conventional method of constructing the cross girder frame on the temporary piles. FIGS. 13 (a) and 13 (b) are a side view and a plan view for explaining a conventional construction method using a steel jacket. a: pile, A: temporary base, B: horizontally arranged ruler frame,
C: Vertically driven ruler frame, G: Underwater ground, 11 ... Vertical beam, 12 ... Horizontal beam, 13 ₁ ~ 13 ₄ , 14 ₁ ~ 14 ₄ , 15, ₁ ~ 15 ₄ ...... Specific corner part, 17,17 ′, 18,18 ′ …… Beam material, 19,20,2
0 ', 21 ...... Connecting bar, 22 ...... machine frame, 23 ₁ ~ 23 ₄ ...... cylindrical body,
26 …… Guide.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 62-32096 (JP, A) JP 61-162630 (JP, A) Actual development 55-76226 (JP, U)

Claims (2)

[Claims] 1. A temporary base is installed by placing a plurality of temporary piles on a submerged ground, and installing a temporary vertical beam and a horizontal crossbeam at the water projecting upper end of each temporary pile to construct a temporary base. A specific position among the corners formed by the multiple vertical beams and horizontal beams that exactly matches the planned building position of the piles that are arranged at the required vertical and horizontal intervals. Install the horizontally arranged ruler frame on the above-mentioned temporary base, and in the machine frame integrally assembled by multiple beam members and connecting bars, place multiple cylinders vertically and horizontally at the required intervals. The vertical driving ruler frame body is constructed by arranging the piles of the plurality of cylinders in the horizontal arrangement ruler frame, which are arranged in the related positions that exactly correspond to the ones in the horizontal row in the planned building positions of the piles to be placed. The horizontal alignment must be exactly aligned with the corners that form the row of the body. Mounted and fixed on the ruler frame body, insert the pile into the cylinder of the above-mentioned vertically driven ruler frame body from above, and build and piling it on the submarine ground through the cylinder body and corresponding corner parts. After that, move the vertical driving ruler frame body to a position where each cylinder exactly matches the corner portion of the next row of the horizontally arranged ruler frame body, and install it in the next row by the same procedure as above. Underwater pile driving method, which is characterized by building and driving the piles. 2. A temporary base, which is formed by bridging a temporary vertical beam and a horizontal horizontal beam on the water projecting upper ends of a plurality of temporary piles cast on a submarine ground, and a plurality of vertical beams constituting a lattice. Horizontal placement ruler frame that makes specific multiple ones of the multiple corners formed by the horizontal beam into the relational positions that exactly match the planned building positions of the piles that are placed at the required vertical and horizontal intervals Inside the machine frame that is integrally assembled with the body, multiple beams and connecting bars, multiple cylindrical bodies are arranged in the horizontal and vertical rows with the required spacing vertically and horizontally. It is composed of a vertical driving ruler frame body that is lined up in a relational position that exactly matches that of the above, and the horizontally arranged ruler frame body is mounted on the temporary base, and the vertically arranged ruler frame body is mounted vertically. It is equipped with a driving ruler frame, and the pile is mounted on a cylinder of a vertical driving ruler frame. Preliminary corresponding consistent with that underwater pile driving apparatus characterized by comprising as to pouring with Tatekomu the sea bed soil through a corner portion of the horizontal arrangement ruler frame.