KR101680794B1

KR101680794B1 - Basic structure for constructing a caisson foundation and the construction method using the same

Info

Publication number: KR101680794B1
Application number: KR1020150133046A
Authority: KR
Inventors: 강기원; 이정수; 서인환; 이정한; 이은철; 정운; 김기남; 박건영; 김종현
Original assignee: 현대건설 주식회사
Priority date: 2015-09-21
Filing date: 2015-09-21
Publication date: 2016-12-12

Abstract

The present invention relates to a foundation structure for constructing a pail and a method of constructing a pail using the same, which comprises a steel plate plate spaced apart from each other by a predetermined interval and having a plurality of protrusions protruding upward, A bottom slab including a concrete layer formed by placing a set height concrete from an upper surface of the steel plate so that an upper part thereof is exposed; And a sidewall formed along the circumferential direction of the bottom slab, the sidewall extending in a direction intersecting with the bottom slab and penetrating in the longitudinal direction.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a basic structure for constructing a water container,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a foundation structure for a pail container and a pail container construction method using the same, and more particularly to a pillar container construction structure capable of securing stability against water pressure while reducing weight, .

Generally, piles are used to construct pier foundation at sea, such as pile foundation method, pond basin method and parapet method. The pile foundation method and the pile foundation method can not be applied because the foundation with the large horizontal and vertical loads is required in the ground where the superficial soft clay layer is distributed thickly on the deep sea.

The method of construction of the pail basin is such that the pail made of concrete is put in the retractor so that it has a height enough to expose the upper part on the water surface at the base installation position, and if the pail is higher at the pail installation position, , It sinks down to the bedrock through the superficial soft layer and the top layer. Then, soil inside the pail is excavated using excavation equipment such as a cram shell, and it is submerged by the weight of the pail to the depth of a predetermined rock bed support layer.

This method of pouring basin is completed by pouring the water and the soft layer in the pouring tank and pouring the bottom of the pouring tank, and then filling the water tank with water, underwater concrete, filling material, and concrete pouring process .

This method of pouring basin construction is advantageous not only because of its vertical supporting capacity but also because it has a very high level of horizontal supporting force. It is possible to visually check the supporting layer in terms of stability, but it is easy to tow and move it because the weight of the concrete structure is very heavy. .

In addition, if the pail base is not located in the super-soft layer, the ground is not uniform and the bottom surface of the pail base is not matched with the flatness, which causes inconveniences such as grouting.

Korean Patent Publication No. 10-2002-0081531

An object of the present invention is to provide a foundation structure for constructing a pail and a method for constructing the pail using the same, which can secure stability against water pressure while reducing weight.

The present invention relates to a steel plate having a plurality of convex portions protruding upward from each other and spaced apart from each other by a predetermined interval and a set height concrete cast from the upper surface of the steel plate so that an upper portion of each convex portion is exposed on the steel plate A bottom slab comprising a concrete layer to be formed; And a sidewall formed along the circumferential direction of the bottom slab and extending in a direction intersecting the bottom slab and penetrating in the longitudinal direction, the bottom slab being disposed on the lower side of the side, The present invention provides a foundation structure for constructing an inner space.

According to another aspect of the present invention, there is provided a steel plate comprising: a steel plate having a plurality of convex portions protruding upward and spaced apart from each other at a predetermined interval in a take-a-lot space; and a concrete layer formed on the steel plate to expose an upper portion of each convex portion And a side wall extending along a circumferential direction of the bottom slab and extending in a direction intersecting the bottom slab, wherein the bottom slab is disposed below the side wall to form an inner space together with the side wall A step of preparing a foundation structure for constructing a pail; Lifting the foundation structure for floating pail construction with a floating crane and moving it to an underwater work site; Installing a concrete form on the foundation structure for forming the water reservoir, and forming an extended sidewall extending from the upper surface of the sidewall; Moving the foundation structure for forming the right sidewall having the extended sidewall to the installation position by lifting the foundation structure by the floating crane; and completing construction of the pail by placing concrete into the foundation structure for constructing the pail container Wherein the step of moving the water tank to the underwater work site according to the height of the water tank to be installed and the step of forming the extended side wall are repeated a plurality of times.

The basic structure for constructing the pail container and the method of constructing the pail container using the same according to the present invention have the following effects.

First, the bottom slab is formed by casting concrete on a steel plate formed with convex portions, thereby reducing weight.

Second, the water pressure against the vertical direction acts on the bottom slab when the foundation structure for downhole application is lowered in the water, and the protrusions are formed on the steel plate forming the bottom slab, so that the water pressure is uniformly distributed. Further, since the concrete is placed on the steel plate, the resistance against the vertical direction water pressure is also improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a foundation structure for pouring bucket according to an embodiment of the present invention; FIG.
Fig. 2 is an enlarged view of the portion "A" in Fig.
Fig. 3 is an enlarged view of the portion "B" in Fig.
Fig. 4 is an enlarged view of another embodiment of the "A" portion of Fig.
5 is an enlarged view of the portion "B" in Fig.
Figs. 6 to 11 show a process of constructing using the foundation structure for constructing the pail according to Fig. 1. Fig.

Figs. 1 to 11 show a basic structure for constructing a pail container and a pail container construction method using the same according to the present invention.

First, referring to Figs. 1 to 4, a foundation structure for constructing a pail container according to the present invention will be described. The basin construction 100 includes a bottom slab 110 and side walls 130. The bottom slab 110 includes a steel plate 111 and a concrete layer C1 formed on the steel plate 111. The steel plate 111 has a plurality of protrusions 113 spaced apart from each other by a predetermined interval and protruding upwardly .

The steel plate 111 is formed in a circular or polygonal cross-section. The cross-sectional shape of the steel plate 110 is formed to correspond to the cross-sectional shape of the bridge pier to be constructed using the foundation structure 100 for constructing the pail. In the present embodiment, the cross section of the steel plate 111 is circular.

As described above, the convex portions 113 are spaced apart from each other at predetermined intervals and protrude upward. The convex portions 113 are formed, for example, in a matrix array on the steel plate 111. However, this is only an example, and the arrangement of the convex portions 113 may be variously changed.

Each of the convex portions 113 may be separately formed and joined to the steel plate 111 by welding or the like. More specifically, through holes (not shown) corresponding to the convex portions 113 are formed in the steel plate 113 and the convex portions 113 formed by bending a separate steel plate, To the plate (111). At this time. The convex portion 113 separately manufactured is bonded to the steel plate 111 so as to shield the through hole (not shown).

As shown in FIGS. 1 to 3, in the present embodiment, the convex portion 113 has a semicircular cross section in its longitudinal direction and extends in the radial direction of the steel plate 110 to form a shell do. 4 and 5 show another embodiment of the convex 113 '. The longitudinal cross-section of the convex 113' shown in FIGS. 4 and 5 is formed in a rectangular shape in the steel plate 110, And is formed in the form of a shell. In FIGS. 4 and 5, the longitudinal cross section of the convex 113 'is illustrated as being rectangular, but it is not limited thereto and various polygonal shapes may be formed. Meanwhile, the convex portion is not limited to the embodiment shown in FIGS. 1 to 5, but may be formed in the form of a hemispherical or horn shaped shell.

On the other hand, the upper portions 113a and 113'a of the convex portions 133 and 133 'are cut by the operator in the future. The upper portions 113a and 113'a of the convex portions 133 and 133` may be cut to connect the trest tubes (not shown) to the convex portions 133 and 133` to pour concrete. This will be described in more detail in a later-described method of constructing a pail.

The concrete layer C1 is formed on the steel plate 111. The steel plate 111 is formed with a steel plate 111 so that the coupling strength between the steel plate 111 and the concrete layer C1 can be improved. A plurality of stud bolts 115 are fastened so as to protrude from the lower surface of the base plate 110 to the upper surface. When the concrete is placed on the upper surface of the steel plate 111 in a state where the stud bolt 115 is fastened to the steel plate 111, the contact area is increased by the stud bolt 115, And the steel plate 111 can be increased.

The concrete layer C1 is formed on the steel plate 111 as described above. More specifically, the concrete layer C1 is formed by placing concrete on the upper surface of the steel plate 111. When the concrete is placed on the upper surface of the steel plate 111 to form the concrete layer C1, the concrete placed thereon may not completely cover the convex portion 113 and an upper portion of the convex portion 113 may be exposed So that the concrete layer C1 is formed.

The bottom slab 110 includes the steel plate 111 and the concrete layer C1 formed on the steel plate 111 as described above so that the foundation structure 100 for underwater construction And can resist the vertical direction hydraulic pressure transmitted to the bottom slab 110 when it is seated in the work place or the pail installation position.

The side wall 130 is formed to extend in the longitudinal direction intersecting with the bottom slab 110 along the circumferential direction of the bottom slab 110. Inside the side wall 130, reinforcing bars (not shown) are reinforced to reinforce the rigidity of the side wall 130.

In the present embodiment, the side wall 130 is formed in a tubular shape having a circular cross section and penetrating the inside in the longitudinal direction, and the bottom slab 110 is disposed to shield the lower side of the side wall 130. Therefore, the foundation structure 100 for pouring water has an inner space defined by the bottom slab 110 and the side wall 130, and the upper side is opened and the lower side is shielded.

Meanwhile, the bottom slab 110 shielding the lower side of the side wall 130 is positioned at the bottom of the bottom slab 100 when the bottom slab 100 for a water container installation is seated on the floor 10, 50-1, 50-3, The lower surface 133 of the side wall 130 may be spaced from the bottom surface of the bottom slab 110 by a distance between the ground surface 10, 50-1, 50-3, And is spaced apart from the set height. As will be described later, after the pail is manufactured using the foundation structure for constructing the pail 100, the pail is installed in the spacing space 101 (see FIG. 1) so that the pail can be fixed to the installation position before pouring concrete into the pail. ) To fix the ground surface (50-5) and the water reservoir (100-3).

6 to 11, a method of constructing the water reservoir using the above-described foundation structure 100 for constructing a water reservoir container will be described.

Referring to FIGS. 6 to 11, the method for constructing the water reservoir using the foundation structure for constructing the water reservoir first includes the step of fabricating the foundation structure 100 for constructing the water reservoir in the take- The patisserie 10 refers to an underwater work site where the water tank is constructed using the foundation structure 100 for pouring water and a land work site located in the vicinity.

More specifically, the reinforcing bars (not shown) forming the skeleton of the side wall 130 are reinforced while reinforcing the rigidity of the side wall 130, The steel plate 111 of the bottom slab 110 is disposed at a predetermined height from the ground 10. (Not shown) for placing the concrete and placing concrete on the inside of the formwork (not shown) and on the steel plate 111, the bottom slab 110 and the side wall 130 The foundation structure 100 for the pouring container construction is manufactured.

When the foundation structure 100 for a bucket container is manufactured in the patisserie 10, after lifting the foundation structure 100 for a bucket construction using a floating crane 70, (50-1). The first underwater worksite 50-1 is illustratively located in the sea or river 30. The first underwater worksite 50-1 extends the longitudinal length of the side wall 130 of the main body 100 for constructing the water pipe, Is higher than the depth of the first underwater worksite (50-1).

The basement structure 100 for the pothole construction moving to the first underwater worksite 50-1 descends while filling the inner space of the foundation structure 100 with water to a set height. The foundation structure 100 for a pouring vessel constructs a hole (not shown) on the exposed upper side of the convex portion 113 before moving to the first underwater worksite 50-1, And a drain valve 150 is installed on the drain pipe 113-1.

When the water base construction basic structure 100 descends in the first underwater worksite 50-1, when the water drain pipe 113-1 is opened through the water drain valve 150, The water is filled into the inner space of the foundation structure 100 and filled.

When the basement structure 100 for a basin is placed on the first underwater worksite 50-1, the basement structure 100 is installed on the upper surface 135 of the side wall 130 of the basin structure 100, (Not shown) corresponding to the first and second molds 130 and 130 are installed. Then, the concrete is poured into the mold (not shown) to form the first extended side wall 130-1.

The foundation structure 100-1 having the first extended side wall 130-1 is lifted to the floating crane 70 and moved to the second underwater worksite 50-3. Here, the depth of the second underwater worksite 50-3 is deeper than the depth of the first underwater worksite 50-1. However, the water depth of the second underwater worksite 50-3 is not greater than the height of the foundation structure 100-1.

The foundation structure for foundation 100-1 for the construction of the water pipe structure moved to the second underwater worksite 50-3 is connected to the water pipe 113 connected to the convex portion 113 as in the first underwater worksite 50-1 -1) is opened to the drain valve 150, and the inner space of the basin construct 100-1 is filled with water to be lowered and seated.

When the foundation structure 100-1 is placed on the ground surface of the second underwater worksite 50-3, the first extension side wall 130-1 of the foundation structure 100-1 -1), concrete is poured into the mold (not shown) to form a second extended side wall 130-3. Although only the second extended side wall 130-3 is formed in this embodiment, the present invention is not limited thereto. The process of forming the extended side wall may be repeated a plurality of times according to the height of the pier to be constructed.

The foundation structure 100-3 for forming the right water pipe formed up to the second extended side wall 130-3 is lifted to the floating crane 70 and moved to the construction position 50-5 where the water container is to be installed . The drain pipe 113-1 connected to the convex portion 113 is opened by the drain valve 150 to fill the inner space of the base structure 100-3 for filling the water, And is seated in the position 50-5.

When the above-mentioned foundation structure for foundation 100-3 is seated, an operator is put into the inner space of the above-mentioned foundation construction 100-3. The worker descends to a position where the bottom slab 110 of the pail 100-3 is positioned and then the upper portions 113a and 113'a exposed from the concrete layer C1 in the convex portion 113 are removed, .

When a concrete pipe (not shown) is connected to the cut portion of the convex portion 113 and concrete is poured through the trice tube (not shown), the ground surface of the installation position 50-5 and the ground surface -3) is filled with the concrete (C2) in the space (101) between the bottom surface of the bottom slab (110) and the bottom surface of the bottom slab (110). The filled concrete C2 may be filled only in the spacing space 101 or may be filled up to a predetermined height of the inner space of the foundation structure 100-3 after filling the spacing space 101. [ The filling concrete C2 is installed in the spacing space 101 so that the ground surface of the installation position 50-5 and the foundation structure 100-3 are integrated with each other, 100-3) is fixed so as not to move.

When the foundation structure 100-3 is fixed, the underwater concrete C3 is poured into the inner space of the foundation structure 100-3 to form the foundation structure 100 -3), the construction of the water tank is completed.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: Basic structure for water container construction
110, 110`: bottom slab 111: steel plate
113, 113`: convex portion 113-1: drain pipe
130: side wall 150: drain valve
131: Reinforcing bar 10:
50-1: First underwater worksite 50-3: Second underwater workplace
50-5: Construction location 70: Floating crane

Claims

A plurality of convex portions protruding upward from each other and spaced apart from each other by a predetermined interval, and a concrete layer formed by placing a set height concrete from the upper surface of the steel plate so that the upper portion of each convex portion is exposed on the steel plate, A bottom slab; And
And a side wall extending along the circumferential direction of the bottom slab and extending in a direction intersecting with the bottom slab and passing through the inside in the longitudinal direction,
Wherein the bottom slab is disposed below the sidewall to form an inner space with the sidewall,
The convex portion
The longitudinal cross-section is semicircular or polygonal,
Wherein the longitudinal cross-section is formed in a shell shape extending in a transverse direction or a longitudinal direction of the steel plate.

A plurality of convex portions protruding upward from each other and spaced apart from each other by a predetermined interval, and a concrete layer formed by placing a set height concrete from the upper surface of the steel plate so that the upper portion of each convex portion is exposed on the steel plate, A bottom slab; And
And a side wall extending along the circumferential direction of the bottom slab and extending in a direction intersecting with the bottom slab and passing through the inside in the longitudinal direction,
Wherein the bottom slab is disposed below the sidewall to form an inner space with the sidewall,
Wherein a hole is formed in the upper portion of the convex portion and a drain pipe is connected to the hole so that the water is introduced into the inner space through the drain pipe when the basic structure for pouring water is submerged in water,
And further it includes the right bucket foundation structure for the construction of the drain valve, which is installed on the drain pipe.

The method according to claim 1 or 2,
Wherein the bottom slab comprises:
Wherein a bottom surface of the side wall and a bottom surface of the bottom slab are spaced apart from each other by a predetermined height so that a spacing space is formed between the bottom surface of the bottom slab and the ground surface.

The method according to claim 1 or 2,
And the convex portions are arranged in a matrix array on the steel plate.

The method according to claim 1,
Wherein a hole is formed in the upper portion of the convex portion and a drain pipe is connected to the hole so that the water is introduced into the inner space through the drain pipe when the basic structure for pouring water is submerged in water,
And a drain valve installed on the drain pipe.

A bottom slab including a steel plate having a plurality of convex portions protruding upward and spaced apart from each other at a set interval and a concrete layer formed on the steel plate so as to expose an upper portion of each convex portion; Fabricating a foundation structure for a water basin construction formed along the bottom slab and extending sideways intersecting the bottom slab, wherein the bottom slab is disposed below the sidewall to form an interior space with the sidewall;
Lifting the foundation structure for floating pail construction with a floating crane and moving it to an underwater work site;
Installing a concrete form on the foundation structure for forming the water reservoir, and forming an extended sidewall extending from the upper surface of the sidewall;
Lifting the foundation structure for constructing the water reservoir with the extending side wall to the floating crane and moving it to the installation position; and
And completing construction of the water reservoir by pouring concrete into the inside of the foundation structure for pouring water,
The method according to any one of claims 1 to 5, wherein the step of moving the water tank to the underwater work site according to the height of the water tank to be installed and the step of forming the extended side wall are repeated a plurality of times.

The method of claim 6,
The step of fabricating the foundation structure comprises:
Reinforcing the rigidity of the side wall and reinforcing reinforcing bars constituting a skeleton, and disposing the steel plate so as to be spaced apart from the ground;
Installing a mold to enclose the reinforcing bars, and pouring concrete into the mold to fill the reinforcing bars; And
And forming the concrete layer by pouring concrete up to a set height so that the upper part of the convex portion is exposed on the upper surface of the steel plate.

The method of claim 7,
Wherein the underwater worksite includes a first underwater work site and a second underwater work site,
Wherein the water depth of the second underwater work site is deeper than the depth of the first underwater work site.

The method of claim 8,
In the step of forming the extended side wall,
And a water tank filled with water up to a set height of the inner space, wherein the foundation structure for lowering water is lowered to be placed on the ground surface of the underwater worksite, and then a formwork is installed on the side wall and concrete is installed to form an extended side wall. A method of constructing a pail using a foundation structure for construction.

The method of claim 9,
Wherein completing the pail construction comprises:
Placing the foundation structure for pouring water on the ground at the installation location while filling the interior space with water;
Securing the foundation structure for constructing the pail; And
And a step of pouring underwater concrete into the inside of the foundation structure for constructing the right pail.

The method according to claim 9 or 10,
A hole is formed on the exposed upper side of the convex portion and a drain pipe is connected to the hole so that the water is introduced into the inner space through the drain pipe when the foundation structure for placing the water pipe is placed on the ground, ,
And a drain valve is further installed on the drain pipe.

The method of claim 10,
The step of securing the foundation structure for pouring water includes:
When the exposed upper side of the convex portion is cut to connect the tremy pipe and the filled concrete is laid in the spacing space between the bottom slab and the installation position ground through the tremie pipe, A method of constructing a pail using a foundation structure for a pail.