KR100617950B1 - Under Water Dry Structure Construction Method and Functional Working Ship - Google Patents

Abstract

The present invention provides a method for constructing underwater dry structures that safely work the caisson installation work in a state in which the functional work line for installing the caisson in the water is raised by a certain height from the water surface, and conveniently separated from the structure by spreading the work line around one side of the work line. The functional work line is started.

To this end, the present invention forms a caisson through hole in the center of the circular, square, etc., the first hydraulic jack for supporting the support pile on the side of the support pile, and the second hydraulic jack for lifting up and down the support pile on its upper surface Moving the work site to the work site, fixing the support pile to the soil layer (rock layer) by the operation of the second hydraulic jack, and raising the work line from the surface along the support pile fixed by the operation of the second hydraulic jack. And assembling the caissons from the upper surface of the working ship, submerging the caissons through the caisson through holes to support them with the first hydraulic jack, and constructing a pier or the like inside the caissons, and then lifting the caissons with the second hydraulic jacks and separating them. And operating the second hydraulic jack to lower the working line from the support pile to the surface, and then removing the support pile fixed to the soil layer (rock layer). It is composed of the step of floating by the operation of the hydraulic jack and separating the coupling of the work line and then separated from the left and right around the hinge portion to separate the work line from the structure.

In the present invention, by immersing the caisson directly from the working ship, it is possible to immerse the caisson easily without a separate working ship, and can work regardless of the wave or wind direction by raising the working ship to a certain height from the surface. And, the work line is separated / combined to have an effect that is easily separated from the structure.

Underwater dry structures, work ships, pile foundations, work foundations

Description

Underwater Dry Structure Construction Method and Functional Working Ship

1 is a plan view showing a functional working line of the present invention.

Figure 2 is a plan view showing another embodiment of the functional working line of the present invention.

Figure 3 is an exploded perspective view showing the main portion of the functional working line of the present invention.

4 is a flowchart of the method for constructing a dry structure underwater in the present invention.

Figure 5 is a flow chart showing another embodiment of the underwater dry structure construction method of the present invention.

Figure 6a is a cross-sectional view showing a fixed state for lowering the support pile with the second hydraulic jack of the present invention.

Figure 6b is a cross-sectional view showing a state of lowering the support pile with the second hydraulic jack of the present invention.

Figure 6c is a cross-sectional view showing a state in which the support pile is lowered by the second hydraulic jack of the present invention.

Figure 7a is a sectional view showing a state before fixing the caisson of the present invention with the first hydraulic jack.

Figure 7b is a sectional view showing a state in which the caisson is fixed by the first hydraulic jack operation of the present invention.

Figure 8a is a cross-sectional view showing a state in which the work line moved to the work site showing the construction method of underwater dry structure using the pile foundation of the present invention.

Figure 8b is a cross-sectional view of constructing the pile foundation by raising the construction and work line of the support pile with a second hydraulic jack.

Figure 8c is a cross-sectional view of the caisson assembled.

Fig. 8D is a cross-sectional view of the caisson, which pours leveling concrete after removing and leveling the soil layer;

Figure 8e is a cross-sectional view of the pile head after installing the expansion tube in the lower caisson to block the inflow and drainage of external water.

Figure 8f is a cross-sectional view of the construction of the bridge structure.

Figure 8g is a cross-sectional view of lifting the caisson after the removal of the expansion tube and the inflow of external water.

Fig. 8H is a sectional view of lowering the work line by operating the second hydraulic jack.

Figure 8i is a cross-sectional view of dismantling the support pile and separating the work line.

Figure 9 is a cross-sectional view showing a state in which the working ship moved to the work site showing the construction method of underwater dry structure using the direct foundation of the present invention.

Fig. 9B is a sectional view in which a support pile is installed on a support layer, and a working soil is raised to dredge a bottom soil layer.

Fig. 9C is a cross-sectional view of pouring and leveling concrete after excavation and flattening of a rock layer.

Figure 9d is a cross-sectional view of the ballast tank after the caisson assembly by injecting water.

Fig. 9E is a cross-sectional view of the watertight material pressed against the support layer to block external water and draining the interior of the caisson.

9F illustrates rock layer excavation and flattened cross-sectional view.

Figure 9g is a cross-sectional view of the construction of the structure.

Fig. 9H is a cross-sectional view of draining water of the barast tank and lifting and disassembling the caisson.

Figure 9i is a cross-sectional view of separating and leaving the work line by dismantling the support pile after lowering the work line with a hydraulic jack.

Figure 10a is a plan view of a state of constructing a structure with a working line.

Fig. 10B is a plan view of a state in which the work line is separated.

Fig. 10C is a plan view of the state where the work line is separated.

* Description of the symbols for the main parts of the drawings *

10: Workline 11: caisson insertion hole

12: 1st hydraulic jack 13: pedestal

14: Boom 15: Support pile

16: holder 17: fixing pin

18: through air 20: support

21: 2nd Hydraulic Jack 22: Boom

23: connecting rod 24: connecting pin

25: through hole 30: hinge part

31: fixed frame 32: coupling portion

40; Support plate 41: pile foundation construction equipment

42: leveling concrete 43: expansion tube

44: Barast Tank

The present invention relates to a method for constructing an underwater dry structure and a functional working line thereof, and in particular, a functional working line for submerging the caisson in water is raised by a certain height from the surface to safely proceed with the caisson subsidence work, and focuses on one side of the working line. The present invention relates to a method for constructing an underwater dry structure which is easily separated from an open structure, and a functional work line thereof.

As is well known, in order to install a pier or construct a large structure underwater, a caisson is manufactured on land, and it is moved to a tugboat and moved to a place where the caisson is to be installed.

In order to install these caissons underwater, a number of working ships are arranged around them so that the caissons submerged in the water along with the tugboat holding the caissons are held vertically, and the caissons are held by ropes connected to the caissons. It doesn't move and keeps upright.

As such, there is inconvenience of having to put a separate work line into the work site when installing caissons or constructing a structure, and if the caissons set on the support floor are small and fall down or have an uneven settlement, a separate supporting facility There was an inconvenience to install the, there is a problem that a safety accident occurs, there was a difficulty in delaying the work due to the wave (wave) during the caisson installation work and construction of the structure.

In order to solve the above problems, the present invention can be installed firmly in the caisson to be installed in the water, there is no need for a separate work line, the construction method of underwater dry structure and its functional work line to minimize the work delay caused by blue To provide.

In order to achieve the above object, the present invention is to form a caisson insertion hole in the center according to the shape of the circular, square, etc., the first hydraulic jack for supporting the support pile from the side of the support pile, and the support pile on the upper surface Moving the work line provided with the second hydraulic jack to ascend and descend to the work site by a towboat; and firmly fixing the support pile to the soil layer (rock layer) by the operation of the second hydraulic jack, and also by the operation of the second hydraulic jack. Raising the work line along the fixed support pile from the surface by a certain height, Assembling the caisson from the work line to immerse the caisson with the caisson insertion hole to firmly support it with the first hydraulic jack, and pier inside the caisson After constructing the back structure, lifting the caisson with the second hydraulic jack and separating it, and operating the second hydraulic jack to remove the support pile from the supporting pile. Lowering the upline to the surface, then lifting the supporting pile fixed to the soil layer (rock layer) by the operation of the second hydraulic jack, separating the coupling part of the work line, and separating the work line from the structure by separating the work line from the structure. It proposes the construction method of underwater dry structure consisting of the step of leaving.

In addition, the caisson through hole is formed in the size having a work space that can be assembled and detached, according to the shape of the caisson in the center, the hinge portion separated / coupled along the longitudinal direction and rotatably installed on one side, On the other side, the coupling part formed to be separated / coupled by bolts and nuts, the first hydraulic jack installed to support the caisson after the caisson subsidence on the upper surface, and the support pile fixed to the lower side and then along the support pile to a certain height from the water surface We propose a functional work boat on which a second hydraulic jack is installed.

In the present invention, the caisson is installed easily by installing the caisson from the working ship without a separate working ship, the work is carried out in a state where the working ship is firmly positioned in the water, the installation of the caisson without delay by the blue wave (wave) Will be able to work quickly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in the figure, the step of moving the functional working ship 10 constructed in accordance with the shape of the caisson 1 to the work site with a tug, and by operating the hydraulic jack 21 installed on the upper surface of the work ship 10 Driving the support pile 15 to the support layer 2 and fixing the support pile 15 firmly, and pulling the work line 10 up to a predetermined height from the surface by a hydraulic jack 21 coupled to the support pile 15. And assembling a caisson 1 having a size suitable for the structure to be constructed and immersing it firmly in the support layer 2, and after constructing the structure to be constructed inside the caisson 1, the caisson (1). ) Lifting and dismantling it, lowering the working line 10 with the hydraulic jack 21 so that the working line 10 touches the water surface, and pulling up the support pile 15 from the working line 10. After the connection of the work line 10 is released to the work line (1) 0).

In addition, the work line 10 is coupled to the rotatable hinge portion 30 to the fixed frame 31 protruding on one side, and to form a coupling portion 32 is protruded to the other side and fastened with bolts, nuts (work line ( 10) is rotated about the hinge portion 30 is separated / combined.

As shown, the functional working line 10 of the present invention has a flat surface having a predetermined thickness, and larger than the size of the caisson 1 inserted into the center or the like, as shown in FIGS. 1 to 3. A caisson insertion hole 11 having a size is formed, and a hydraulic jack 12 for holding the caisson 1 submerged outside thereof is provided.

The hydraulic jack 12 firmly secures the base 13 to the upper surface of the work line 10, and fixes the hydraulic jack 12 provided with the boom 14 on the upper surface thereof, and the boom 14 is the hydraulic jack 12. It moves horizontally in accordance with the operation of the) to be in close contact with the outer diameter of the caisson (1) is installed to firmly support the caisson (1).

Along with this, the work line 10 is provided with a plurality of holders 16 for fixing the support pile 15 to the support layer 2, the support pile 15 is fixed pin 17 and the connecting pin at regular intervals ( 24 is formed to form a through hole (15a), the fixing rod 16 forms a through hole 18 into which the fixing pin 17 is inserted into the upper surface of the working line (10).

In addition, a plurality of supports 20 are fixed to the upper surface of the work line 10 together with the fixing table 16, and the upper surface thereof is provided with a boom 22 that vertically moves in accordance with the operation of the hydraulic jack 21, the upper portion thereof A connecting rod 23 is installed at the connecting rod 23, and the connecting pin 23 forms a through hole 25 into which the connecting pin 24 is inserted.

Such a support 16 and the support 20 are installed in a plurality of places to install the support pile 15 for fixing the work line 10.

The work line 10 is divided into two parts to be separated from the structure by opening it to both sides after the construction of the structure to the center of the longitudinal direction, one side of the work line 10 protrudes the fixing frame 31 to the hinge portion ( 30) is coupled to the other side by forming a coupling portion 32 is fastened with a bolt, nut is rotated about the hinge portion 30 is separated / coupled.

In addition, as shown in Figures 4 and 5 will be described according to the construction method using the pile foundation and the construction method using the foundation of the underwater dry structure of the present invention.

First, the method for constructing an underwater dry structure using a pile foundation is towed the dried working ship 10 to the work site to be constructed as shown in Figure 8a, the caisson (1) to the work ship 10 A hydraulic jack 12 for supporting and a hydraulic jack 21 for raising and lowering the support pile 15 are provided (S100).

Working line 10 arrived at the work site is driven by the hydraulic jack 21 to support the support pile 15 having a certain length to the soil layer (2) to firmly fix it, the lower support of the support pile 15 In the state in which the pile 15 is embedded in the soil layer 2, the support plate 40 for maintaining the state in which the support pile 15 and the soil layer 2 are in close contact is provided (S101).

6 and then the fixing pin 17 is inserted into the through hole 15a of the support pile 15 while the connecting table 23 of the hydraulic jack 21 installed on the work line 10 is lowered. The connecting pin 24 is fixed to the connecting table 23, and the fixing pin 17 is detached from the fixing table 16 so as to lower the support pile 15.

In this state, the support pile 15 is lowered by lowering the boom 22, and after fixing the support pile 15 with the fixing pin 17, the boom 22 is raised to fix the connecting pin 24. While lowering the boom 22, the support pile 15 is repeatedly lowered and fixed to the soil layer 2.

When the fixing of the support pile 15 to the soil layer 2 is completed as shown in FIG. 8B, the hydraulic jack 21 raises the work line 10 from the surface of the support pile 15 by a predetermined height as opposed to the above process (S102). ).

After installing the pile foundation construction equipment 41 for constructing the pile foundation (3) on the upper part of the work line (10) will be a plurality of pile foundation (3) in the rock layer (4) (S103).

In addition, assembling the caisson 1 from the upper surface of the work line 10 (S104) to sink the caisson 1 as shown in Figures 8c and 10, and when the immersion of the caisson 1 is completed, the work line 10 By operating the hydraulic jack 12 installed on the upper surface of the caisson (1) to support the caisson (1) by the boom 14 (S105).

In addition, the curved surface of the soil layer 2 is removed and flattened so that the bottom surface of the caisson 1 is even (S106), and then, as shown in FIG. After curing by curing (S107).

An expansion tube 43 is installed in the lower part of the caisson 1 as shown in FIG. 8E (S108), and the expansion tube 43 is expanded to block water from flowing from the outside of the caisson 1, and In addition, the drainage work to drain the water inside the caisson (1) is to be performed (S109).

Thus, the interior of the caisson 1 is in a dry state, arranging the upper portion of the pile foundation (S110), and as shown in Figure 8f to the pier (5) or to construct a structure (S111).

When the construction of the structure is completed, remove the expansion tube 43 from the caisson (1) as shown in Figure 8g to allow the inflow of fresh water (S112), by operating the hydraulic jack 12 to release the support of the caisson (1) caisson After lifting (1) it is released (S113).

Thereafter, as shown in FIG. 8H, the hydraulic jack 21 is operated to lower the work line 10 from the support pile 15 (S114), and as shown in FIG. 8I, the hydraulic jack 21 is operated to be fixed to the soil layer 2. Pulling up the support pile 15 (S115), by releasing the engaging portion 32 of the working line 10 is to leave the working line 10 from the structure (S116).

In addition, the method of construction of underwater dry structure by the direct foundation construction method is towed to the working site to dry the working ship 10 as shown in Figure 9a (S200), using a hydraulic jack 21 as shown in Figure 9b The support pile 15 having a predetermined length is firmly fixed to the rock layer 4 (S201), and the construction of the support pile 15 is the same as the construction method using the pile foundation.

Thereafter, as shown in FIG. 9B, the hydraulic jack 21 is operated to raise the work line 10 to a certain height from the surface (S202), and the dredging soil soil layer on which the support pile 15 is constructed is dredged (S203), and the rock layer ( Excavating 4) with an excavator to flatten the working surface on which the structure is installed (S204).

 The rock layer 4 is poured with leveling concrete 42, which is the basis for the construction of the structure, as shown in FIG. 9C, and cured it (S205), and then the caisson 1 on the upper surface of the work line 10 as shown in FIG. 9D. Assembling, injecting water into the ballast tank 44 to immerse the caisson (S206).

In addition, the watertight material is pressed to the rock layer 4 to block the inflow of external water (S207), and as shown in FIG. 9E, a motor pump 6 is installed to drain the water inside the caisson 1 (S208) and FIG. 9F. As in the excavation of the rock layer 4 with an excavator to flatten the ground on which the structure is constructed (S209).

In this state, as shown in FIG. 9G, when the construction of the structure such as the piers 5 is completed (S210), water is drained from the ballast tank 44 as shown in FIG. 9H (S211).

Then, as shown in FIG. 9i, the caisson 1 is lifted and dismantled from the work line 10 (S212), and the hydraulic jack 21 is operated to lower the work line 10 from the support pile 15 (S213). The hydraulic jack 21 is operated to pull up the support pile 15 fixed to the rock layer 4 (S214), and as shown in FIG. 10, by releasing the coupling portion 32 of the working line 10 from the working line from the structure. Departed from (10) (S215).

As described above, the present invention can immerse the caisson easily without a separate working ship by steadily supporting the caisson in the working ship with a hydraulic jack, and by installing the support pile with the hydraulic jack installed on the working ship, the working ship with the hydraulic jack. By raising to a certain height from the surface of the water can work regardless of the wave (wave), wind direction, etc., the work line is separated / combined to have the effect of easily separated from the structure.

Claims (4)

Work vessel provided with a caisson insertion hole in the center of the circular or square shape, the first hydraulic jack for supporting the supporting pile from the side of the supporting pile, and the second hydraulic jack for raising and lowering the supporting pile on the upper surface thereof. Moving to the work site by the tugboat, and firmly fixing the support pile to the soil layer (rock layer) by the operation of the second hydraulic jack, and the work line is fixed from the surface along the support pile fixed by the operation of the second hydraulic jack. Ascending by height, and assembling the caisson from the upper surface of the working ship to immerse the caisson with the caisson insertion hole to firmly support it with the first hydraulic jack, and to construct a structure such as a pier inside the caisson and then to the second hydraulic jack Floating the caisson to separate it, activating the second hydraulic jack to lower the working line from the support pile to the surface, and then Lifting the supporting pile fixed to the four layers (rock layer) by the operation of the second hydraulic jack, and separating the coupling part of the work line and separating the work line from the structure by separating the work line from the left and right around the hinge. Dry structure construction method. The method according to claim 1, After the work line has been raised from the surface, installing the pile foundation on the work line to fix the pile foundation, supporting the assembled caisson on the soil layer, and removing the soil from the caisson bed. Flattening with an excavator, placing a leveling concrete of a predetermined size on the bottom of the caisson to cure it, and installing an expansion tube at the bottom of the caisson to block the inflow of external water into the caisson, and the expansion tube To expand and block the inflow of external water into the caisson, drain the water contained in the caisson to dry it, and to arrange the head of the pile foundation to construct a structure to be installed such as a piers on the upper surface, and Demolishing the expansion tube that blocks the inflow of the external water; Underwater dry structure construction method. The method according to claim 1, Dredging the soil layer from the bottom after the work line is lifted from the surface, excavating the rock layer under the soil layer with an excavator to flatten the rock layer, and pouring and curing a leveling concrete of a predetermined size in the rock layer. And, injecting water into the assembled caisson barast tank, immersing, squeezing the watertight material into the caisson to block the inflow of external water, draining the water inside the caisson, and then rock layer to a predetermined depth. A method of constructing an underwater dry structure comprising the steps of excavating with an excavator to flatten it, constructing a structure such as a pier to be installed on the upper surface of the ground rock, and draining water from the ballast tank. A caisson insertion hole formed in a size having a working space for assembling and detaching the caisson and formed in the center thereof according to the shape of the caisson, a hinge part separated / coupled along the longitudinal direction and rotatably installed at one side, and a bolt at the other side. A coupling part formed to be separated / coupled with a nut and a first hydraulic jack installed to support the caisson after immersion of the caisson on the upper surface thereof, and the support pile is fixed on the lower side, and installed up and down by a predetermined height from the water along the support pile. Functional working ship, characterized in that consisting of a second hydraulic jack.

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