KR20120013571A - Inflow steel form of tidal power plant and method for constructing inflow using thereof - Google Patents

Abstract

PURPOSE: A steel form for an inlet unit of a tidal power plant and a method of constructing an inlet unit using the same are provided to simplify a structure and enable easy assembling by assembling a steel mold and a steel-made temporary structure, which are fabricated in a factory. CONSTITUTION: A steel form for an inlet unit of a tidal power plant comprises a plurality of guide rails(110), a first temporary structure, a second temporary structure, a steel mold, and a strut. The guide rail is installed on the bottom of the inlet unit of the tidal power plant in a longitudinal direction. The first temporary structure is assembled on the guide rail in multi stages and is installed on the inlet unit of the tidal power station in the longitudinal direction. The second temporary structure is installed on the top of the first temporary structure. The steel mold is formed in a shape of corresponding to the half-section of the inlet unit of the tidal power plant.

Description

INFLOW STEEL FORM OF TIDAL POWER PLANT AND METHOD FOR CONSTRUCTING INFLOW USING THEREOF}

The present invention relates to a steel form for the inlet of the tidal power plant and the construction method of the inlet using the same, and in detail, by assembling the steel formwork and the steel event produced in the factory, structurally simple, easy to assemble, and manufactured separately The present invention relates to a steel form for the inlet of the tidal power plant so that the field is unnecessary, and an inlet construction method using the same.

In general, a power generator that generates electricity using coal, oil, or nuclear power is typically a thermal power plant, a hydroelectric generator, and a nuclear power plant.

Thermal power plants use fossil fuels, which not only deplete fossil fuel resources, but also cause serious damage to the environment due to pollution, and hydroelectric power plants must submerge large areas. There is a problem that causes damage to the natural ecosystem. In addition, the nuclear power plant has a problem in safety due to the use of nuclear fuel, and is contaminated with the environment by the waste and pollutants of nuclear power generated in the power generation process has emerged as a serious threat to life.

In order to solve such a problem, a power generator using nature includes a solar power generator, a wind power generator using wind power, and an tidal power generator using a difference between tides of the sea.

The west coast of Korea has favorable conditions for tidal power generation, and began to examine feasibility of tidal power plant for Incheon sea area in 1929 when the governor-general government began. In recent years, Sihwa tidal power plant is under construction in Sihwa Lake, and eco-friendly energy development under the Taoist Protocol As part of this project, feasibility and detailed design have been achieved through active promotion of tidal power projects such as Incheon Bay and Garorim Bay.

Tidal power generation is a power generation method that uses the rising and falling phenomenon of sea level due to tides.It is a floating type that uses buoyancy received by floating bodies, and a compressed air type that uses compressed air in a closed room according to the rising and falling of tides. It can be classified as a seawater reservoir, that is, a Georgian formula that develops and develops George.

The only of these commercially available tidal-powered tidal power generations is the formation of georges on the coast where tidal-wave differences are remarkable, and the sluice waters are opened by opening water gates at high tide. It is a method of generating water by driving aberration in the process of flowing water into or outflow from George to the open sea when the open sea is low.

In this type of tidal power generation, the method of operating the aberration when the inflow of the seawater into the George and the drainage to the external sea is called the double-flow type, and the method of operating the aberration only in either the inflow or the drainage is called the single-flow type. The operation of the aberration at the time of inflow is called the creative expression, and the operation at the time of drainage is called the eruption.

1 is a plan view schematically showing the installation and arrangement of the entire tidal power plant system in which the aberration structure and the hydrologic structure are installed.

As shown in FIG. 1, the tidal power difference between the tidal power plant construction site and the tidal power station between the lake side (L) and the seaside (S) is installed in a block, between the surrounding park site and land. Numerous aberration structures (A), hydrologic structures (B) and connecting structures (C) are installed between them, so that marine tourism functions, access road functions, power plant functions, etc., can coexist with nature-friendly creative tidal power plants. to be. The outermost aberration structure A and the outermost hydrological structure B are provided with wing walls D, respectively.

FIG. 2 is a cross-sectional view of a portion of the aberration structure for the tidal power plant of FIG. 1;

The aberration structure is a base layer formed with the lower side as the ground portion in the seabed rock formation of the sea side (S) formation and having shear keys 2a at both ends of the sea side (S) and the lake side (L) to form a foundation bottom. The part 2, the aberration generator 10, and the outflow part 16 which discharges the seawater which flowed in from this aberration generator 10 to the lake side L are formed in the upper side of this base part 2. As shown in FIG.

The aberration generator chamber 21 and the machine chamber 22 are installed above the aberration generator 10 and the outlet portion 16, and a lower portion of the aberration so that an operator can access the lower side of the outlet portion 16. The space 65 is installed, and the drain pipe 61 is installed in the base part 2 to collect the leakage water of the lower aberration space 65, and the discharge port 60 for collecting the leakage water and discharging it to the outside is provided. Is installed.

In addition, the front head of the aberration generator 10 is positioned on the sea side S side of the base portion 2, and the runner 18 of the aberration generator 10 faces the lake side L.

At this time, the venturi type having a curved structure (R) and narrowing up to the runner (18) and then gradually extending to the outlet (16) of the lake side (L) to prevent vortex generation and air mixing of the incoming seawater. The inlet portion 14 of the structure is formed.

On the other hand, the aberration generator chamber 21 connected to the aberration generator management access passage 40 is installed on the upper side of the inlet portion 14, and the first and second access roads 33 on the upper side of the outlet portion 16. , 34) consists of a multi-layered aberration structure for a creative tidal power plant.

In the drawings, reference numeral 12 denotes a seaside stoplog support wall, 15 is a bulb fixing part for fixing the aberration generator, 17 is a lakeside stoplog support wall, 20 is an overhead crane operating the aberration generator room, and 24 is a roof. And 25 are moving trolleys, 27 and 35 are stoplog moving gantry cranes, 31 are viewing openings, and 32 are earth and sand layers.

On the other hand, the inlet portion of the aberration structure is formed of a box structure using concrete, it is produced using the form of the R.M.D system consisting of formwork and clubs.

However, when the conventional R.M.D system foam is applied, it is structurally complicated, requires a lot of assembly time, and requires a separate production site for assembling individual components of copper bars and formwork.

In addition, in the case of applying the conventional RMD system foam, a separate wall tie and a fixing pin are required to fix a relatively light formwork, and after the curing is completed, the wall tie and the fixing pin must be removed, and the form is removed. After that there is a problem that must be closed separately on the surface.

The present invention is to solve the problems as described above, the steel formwork for the inlet of the tidal power plant to assemble the steel formwork and the steel event manufactured in the factory structurally simple, easy to assemble, no need for a separate production site. And an inlet construction method using the same.

In addition, since the present invention uses a steel formwork and a steel event with a sense of weight, separate wall ties and fixing pins are unnecessary, and the steel formwork is continuously installed so that a separate finish is unnecessary so that a separate finish is unnecessary. Another purpose is to provide an inlet construction method using the same.

Features of the present invention for achieving the above object,

A steel form for pouring an inlet of an tidal power plant, comprising: a plurality of guide rails installed in a longitudinal direction on a bottom surface of the inlet of the tidal power plant; A primary vent assembled in multiple stages on the guide rail and installed in a longitudinal direction at an inlet of the tidal power plant; A secondary event installed on an upper surface of the primary event; Steel formwork formed of a material corresponding to the half-section of the inlet of the tidal power plant; And it is characterized in that consisting of the support material is installed between the secondary gas and the steel formwork.

Here, the primary event is formed in a rectangular shape by a plurality of H beams, a plurality of units protruding from the upper and lower sides; L-shaped reinforcement is fixed in each of the X-shape in the unit, the reinforcement is fixed in X-shape between the unit and the neighboring unit is formed in the form of a rectangular parallelepiped, respectively installed on the guide rail A structure; A horizontal connection member installed between the pillar structure and the upper or lower pillar structure as an H beam having a predetermined length; A first pedestal installed in the width direction on the upper surface of the columnar structure having a predetermined length of H beam, wherein the reinforcement members are fixed in X-shape; A second pedestal installed in a longitudinal direction from an upper surface of the first pedestal as an H beam having a predetermined length; And installed in the width direction from the upper surface of the second pedestal to the H beam having a predetermined length, the reinforcement is made of a third pedestal is fixed in the X-shape respectively.

Herein, the horizontal connecting member located at the lowermost end of the pillar structure is installed at equal intervals on the bottom screw jack for raising and lowering the primary event in the guide rail; It is further provided with a wheel on the bottom spaced apart from the screw jack to move the primary event in the guide rail.

Here, the primary gait is provided with a support beam for the support material having a first hinge jaw so that the lower end of the support material is supported.

Here, between the inner horizontal connecting member located at the top of the pillar structure, the support beams are provided at equal intervals.

Here, the secondary event is manufactured in a lattice form by a plurality of H-beams and a plurality of L-shaped reinforcement, and fixedly installed on the upper surface of the primary event, both sides and the rear of the tidal power plant An inclined surface corresponding to the inlet is formed.

In this case, the secondary gait is further formed with a second hinge jaw on one side so that the lower end of the brace material is supported.

Here, the steel formwork is a steel panel formed on the front surface of the curved surface or flat surface, a plurality of the main panel is formed in a shape corresponding to the half end surface of the inlet of the tidal power plant; A coupling jaw which is formed to protrude vertically from the rear edge of the main panel and is provided with a bolt fastening hole; Reinforcing ribs protruding in a lattice form from the back of the main panel; And a reinforcing pipe corresponding to the curved surface or the flat surface of the main panel and welded to the upper surface of the reinforcing rib in the longitudinal direction of the main panel.

Here, the main panel is further formed with a third hinge jaw to support the upper end of the brace material on the back.

Here, the main panel is formed with a through hole, the reinforcing bar is fixed by a bolt penetrating the through hole so that the reinforcement of the reinforcing bar.

Here, the steel formwork is installed on the bottom of the inlet of the tidal power plant is independently installed, and when the bottom of the inlet is poured and completed curing, is separated and installed on the secondary gas in the reverse direction to the tidal power plant Pour the top of the inlet.

According to another aspect of the present invention,

In the inlet construction method using the steel foam for the inlet of the tidal power plant, the first step of curing by assembling the steel formwork to the foundation concrete structure pre-installed in the tidal power plant by pouring the lower end of the inlet of the tidal power plant and curing ; A second step of removing the steel formwork when the bottom curing of the inlet of the tidal power plant is completed; A third step of installing a guide rail on the foundation concrete structure; A fourth step of installing a primary event on the guide rail, and fixing the primary event by lifting it from the guide rail with a screw jack; A fifth step of installing a secondary event on the primary event; A sixth step of assembling a steel formwork so as to correspond to an upper end of the inflow portion using a support material on the secondary event; A seventh process of placing and curing concrete after placing reinforcing bars in connection with the basic concrete structure on the front surface of the steel formwork; An eighth step of disassembling the support material to separate the steel formwork from the upper end of the inlet, and then lowering the screw jack to interview the wheel of the primary event and the guide rail when curing is completed; And a ninth step of drawing out the primary and second secondary and the steel formwork by taking out a predetermined length by using a drawing device.

According to the steel form for the inlet part of the present invention tidal power plant configured as described above and the inlet part construction method using the same, structurally simple, easy to assemble, and separately manufactured by assembling the steel formwork and the steel event produced in the factory Since the construction site is unnecessary, construction cost can be reduced and construction period can be shortened relatively.

In addition, according to the present invention, because the use of steel formwork and steel gasket with a sense of weight, separate wall ties and fixing pins are unnecessary, and since steel formwork is installed continuously, no separate finishing is required, thereby reducing construction costs, and The period can be shortened relatively.

1 is a plan view schematically showing the installation and arrangement of the entire tidal power plant system in which the aberration structure and the hydrologic structure are installed.
FIG. 2 is a cross-sectional view of a portion of the aberration structure for the tidal power plant of FIG. 1;
Figure 3 is a front view showing the configuration of the steel foam for the inlet of the tidal power plant according to the present invention.
Figure 4 is a side view showing the configuration of the steel foam for the inlet of the tidal power plant according to the present invention.
5a to 5c is a partial front cross-sectional view showing the configuration of the steel foam for the inlet of the tidal power plant according to the present invention.
Figure 6 is a perspective view showing the configuration of the steel formwork of the steel form for the inlet of the tidal power plant according to the present invention.
7 is a process chart for explaining the inlet construction method using the steel foam for the inlet of the tidal power plant according to the present invention.
8A to 8D are explanatory views showing a process of removing the steel foam for the inlet of the tidal power plant according to the present invention.

Hereinafter, with reference to the accompanying drawings the configuration of the steel foam for the inlet of the tidal power plant according to the present invention will be described in detail.

In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intentions or customs of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

Figure 3 is a front view showing the configuration of the steel foam for the inlet of the tidal power plant according to the present invention, Figure 4 is a side view showing the configuration of the steel foam for the inlet of the tidal power plant according to the present invention, Figures 5a to 5c Partial cross-sectional view showing the configuration of the steel foam for the inlet of the tidal power plant according to Figure 6 is a perspective view showing the configuration of the steel formwork of the steel foam for inlet of the tidal power plant according to the present invention.

2 to 6, the steel foam 100 for the inlet of the tidal power plant according to the present invention, the guide rail 110, the primary gas 120, the secondary gas 130, It is composed of a steel formwork 140 and the support material (150).

First, a pair of guide rails 110 are installed in a pair of two in the longitudinal direction on the base concrete structure 101 which is the bottom of the inlet of the tidal power plant.

In addition, the primary event 120 includes a unit 111, a column structure 112, a horizontal connector 113, a first pedestal 114, a second pedestal 115, and a third pedestal ( 116 and the supporting beam 117 for the support material.

The unit 111 is formed in a square shape by a plurality of H beams, and the connecting portion 111a protrudes upward and downward.

In the column structure 112, the L-shaped reinforcement 160 in each unit 111 is fixed in X-shape, respectively, and the reinforcement 160 is X between the unit 111 and the neighboring unit 111. Each is fixed in the shape of a ruler to form a rectangular parallelepiped and installed on the guide rails 110, respectively.

The horizontal connecting member 113 is installed at the lower end of each pillar structure 112 as an H beam having a predetermined length. Here, the horizontal connecting member located at the lowermost end of the column structure 112 of the horizontal connecting member 113 is installed at equal intervals on the bottom screw jack 113a for raising and lowering the primary event 120 in the guide rail 110. And a wheel 113b spaced apart from the screw jack 113a on the bottom surface to move the primary event 120 on the guide rail 110. Here, a brace beam 113c for fixing the column structure 112 to each other is installed at equal intervals between the horizontal connection members located at the innermost end of the column structure 112 among the horizontal connection members 113.

The first pedestal 114 is a H beam having a predetermined length is installed in the width direction on the upper surface of the top of the columnar structure 112, the reinforcement 160 is fixed in X-shape respectively.

The second pedestal 115 is an H beam having a predetermined length and is installed in the longitudinal direction on the upper surface of the first pedestal 114.

The third support 116 is an H beam having a predetermined length and is installed in the width direction on the upper surface of the second support 115.

Support beam 117 for the support material is installed to support the lower end of the support material 150 to be described later on one side of the primary event 120. Here, the first hinge jaw 117a is formed in the supporting beam 117 for the support material so that the lower end of the support material 150 is axially rotated.

In addition, the secondary event 130 is made of a H-beam having a predetermined length in the form of a lattice, a plurality of L-shaped reinforcement 160 is fixed to each of the X-shaped form of the first primary 120 3 pedestal 116 is fixedly installed on the upper surface, the inclined surface 131 corresponding to the inlet 14 of the tidal power plant is formed on both sides and the rear. Here, the secondary event 130 is further formed with a second hinge jaw 133 on one side so that the lower end of the brace material 150 is supported.

The steel formwork 140 is composed of a main panel 141, a coupling jaw 143, a reinforcing rib 145, and a reinforcing pipe 147.

The main panel 141 is formed of a curved surface or a flat surface on the front surface of the steel material, and a plurality of the main panels 141 are assembled to correspond to the half-section of the inlet portion 14 of the tidal power plant. Here, the main panel 141 is further formed with a third hinge jaw (141a) on the back so that the upper end of the support material 150 is supported. Here, the main panel 141 is formed with a plurality of through-holes 141b on one side, and the bolt 107 through which the reinforcing bar 105 penetrates the through-hole 141b to enable reinforcement of the reinforcement 103. It is fixedly installed by).

The engaging jaw 143 is integrally formed to protrude from the rear edge of each main panel 141 and is provided with a bolt fastening hole 143a.

The reinforcing ribs 145 protrude integrally in a lattice form on the rear surface of each main panel 141.

The reinforcement pipe 147 corresponds to the curved or flat surface of the main panel 141 and is welded to the upper surface of the reinforcing rib 145 in the longitudinal direction of the main panel 141.

On the other hand, the steel formwork 140 according to the present invention is installed independently at the bottom of the inlet portion 14 of the tidal power plant, when the lower end of the inlet portion 14 is completed and cured, separated and secondary in the reverse direction Installed on the glove 130 to allow the top of the inlet portion 14 of the tidal power plant to be poured. In addition, the steel formwork 140 may be welded to the joint site according to the selection in a state interconnected with the neighboring steel formwork by the coupling jaw 143.

In addition, the support material 150 is installed between the secondary event 130 and the steel formwork 140 as a conventional structure capable of extending the length. Here, the lower end of the support material 150 is fixed to the first hinge jaw 117a of the primary event 120 and the second hinge jaw 133 of the secondary event 130, the support material 150 The upper end of the) is fixed to the third hinge jaw (141a) of the main panel 141 so as to be rotatable.

Hereinafter, the inlet construction method using the steel foam for the inlet of the tidal power plant according to the present invention will be described in detail with reference to the accompanying drawings.

7 is a process chart for explaining the inlet construction method using the steel foam for the inlet of the tidal power plant according to the present invention, Figure 8a to 8d shows a process of removing the steel foam for the inlet of the tidal power plant according to the present invention. It is explanatory drawing.

First, after assembling the steel formwork 140 to the pre-installed foundation concrete structure 101 to manufacture the inlet 14, after pouring the lower end of the inlet 14 of the tidal power plant to cure the lower end of the inlet 14 Complete (S100). At this time, reinforcing bars (not shown) are disposed between the pre-installed foundation concrete structure 101 and the steel formwork 140.

In the state in which the bottom production of the inlet 14 of the tidal power plant is completed, the steel formwork 140 is lifted by lifting equipment such as a crane to demold (S110). At this time, it is preferable to demold in the state in which the steel formwork 140 is separated from each other.

Then, a pair of guide rails 110 are installed on the foundation concrete structure 101 by two modifications (S120). At this time, the width of the guide rail 110 is the same as the width of the connecting portion (111a) of the unit (111). The width of the guide rail 110 and the neighboring guide rail is the same as the width of the columnar structure 112 of the primary event 120.

Then, assembling and installing the primary gas 120 on the guide rail 110, and fixed by raising the primary gas 120 from the guide rail 110 with a screw jack 113a (S130). At this time, the leveling operation of the primary event 120 is performed together.

Subsequently, the secondary event 130 is assembled and installed on the primary event 120 (S140).

Subsequently, the steel formwork 140 is assembled to correspond to the upper end of the inlet portion 14 using the support material 150 on the secondary event 130 (S150).

When the assembly of the steel formwork 140 is completed, the reinforcement 103 is disposed in connection with the foundation concrete structure 101 on the front of the steel formwork 140, and after curing concrete, the upper end of the inlet 14 Complete (S160).

Then, dismantling the support material 150 to separate the steel formwork 140 from the upper end of the inlet portion 14, and then lowering the screw jack 113a by the wheel 113b and the guide of the primary event 120 The rail 110 is interviewed (S170).

And, as shown in Figure 8a to 8d by using a withdrawal equipment, such as a crane or a hydraulic jack, withdraw a primary length 120, secondary secondary 130 and steel formwork 140 by a predetermined length Separate (S180). At this time, when the length of the workshop is sufficient, the primary and secondary vents 120, 130 and steel formwork 140 may be taken out at once and separated.

As those skilled in the art would realize, the described embodiments may be modified in various ways, all without departing from the spirit or scope of the present invention. It is to be understood, however, that the present invention is not limited to the specific forms referred to in the description, but rather includes all modifications, equivalents, and substitutions within the spirit and scope of the invention as defined by the appended claims. Should be.

110: guide rail 120: primary event
130: secondary secondary 140: steel formwork
150: prop

Claims (12)

In the steel form for pouring the inlet of the tidal power plant,
A plurality of guide rails installed in a longitudinal direction on a bottom surface of the inlet of the tidal power plant;
A primary vent assembled in multiple stages on the guide rail and installed in a longitudinal direction at an inlet of the tidal power plant;
A secondary event installed on an upper surface of the primary event;
Steel formwork formed of a material corresponding to the half-section of the inlet of the tidal power plant; And
Steel foam for the inlet of the tidal power plant, characterized in that the support material is installed between the secondary gas and the steel formwork. The method of claim 1,
The primary event,
A plurality of units formed in a quadrangular shape by a plurality of H beams, the connecting parts protruding upward and downward;
L-shaped reinforcement is fixed in each of the X-shape in the unit, the reinforcement is fixed in X-shape between the unit and the neighboring unit is formed in the form of a rectangular parallelepiped, respectively installed on the guide rail A structure;
A horizontal connection member installed between the pillar structure and the upper or lower pillar structure as an H beam having a predetermined length;
A first pedestal installed in the width direction on the upper surface of the columnar structure having a predetermined length of H beam, wherein the reinforcement members are fixed in X-shape;
A second pedestal installed in a longitudinal direction from an upper surface of the first pedestal as an H beam having a predetermined length; And
Steel beams for the inlet of the tidal power station, characterized in that the H beam having a predetermined length is installed in the width direction from the upper surface of the second pedestal, the reinforcement is made of a third pedestal fixed to each of the X-shape. The method of claim 2,
Horizontal connecting member located at the bottom of the pillar structure,
Screw jacks are installed at equal intervals on the bottom surface to raise and lower the primary event from the guide rail;
The steel foam for the inlet of the tidal power station, characterized in that further comprising a wheel on the bottom spaced apart from the screw jack to move the primary event in the guide rail. The method of claim 2,
The primary event,
Steel form for the inlet of the tidal power station, characterized in that the support beam for the support material having a first hinge jaw is installed so that the bottom of the support material is supported. The method of claim 2,
Between the inner horizontal connecting member located at the top of the pillar structure,
Steel foam for inlet of tidal power plant, characterized in that the support beam is installed at equal intervals. The method of claim 1,
The secondary event,
A plurality of H-beams and L-shaped stiffeners are manufactured in a lattice form and are fixedly installed on the upper surface of the primary event, and the inclined surfaces corresponding to the inlets of the tidal power plant are formed on both sides and the rear surface. Steel foam for inlet of tidal power plant The method according to claim 6,
The secondary event,
Steel foam for the inlet of the tidal power plant, characterized in that the second hinge jaw is further formed on one side so that the bottom of the brace material is supported. The method according to claim 6,
The steel formwork,
A main panel having a curved surface or a flat surface formed on the front surface of the steel material, the plurality of which are assembled to each other and formed in a shape corresponding to the half-section of the inlet of the tidal power plant;
A coupling jaw which is formed to protrude vertically from the rear edge of the main panel and is provided with a bolt fastening hole;
Reinforcing ribs protruding in a lattice form from the back of the main panel; And
Steel foam for the inlet of the tidal power station corresponding to the curved surface or the flat surface of the main panel, made of a reinforcing pipe welded to it on the upper surface of the reinforcing rib in the longitudinal direction of the main panel. The method of claim 7, wherein
The main panel,
Steel foam for the inlet of the tidal power plant, characterized in that the third hinge jaw is further formed to support the upper end of the support material on the back. The method of claim 7, wherein
The main panel,
The through-form is formed, the steel form for the inlet of the tidal power station, characterized in that the reinforcing bar is fixed by a bolt penetrating the through-hole so as to enable reinforcement of the rebar. The method of claim 1,
The steel formwork,
When the bottom of the inlet of the tidal power plant is installed independently, when the bottom of the inlet is poured and completed curing, it is separated and installed on the secondary vent in the reverse direction to pour the top of the inlet of the tidal power plant Steel foam for inlet of tidal power plant In the inlet construction method using the steel foam for inlet of the tidal power plant of claim 1,
A first step of assembling a steel formwork to the foundation concrete structure already installed in the tidal power plant and then curing by pouring a lower end of the inlet of the tidal power plant;
A second step of removing the steel formwork when the bottom curing of the inlet of the tidal power plant is completed;
A third step of installing a guide rail on the foundation concrete structure;
A fourth step of installing a primary event on the guide rail, and fixing the primary event by lifting it from the guide rail with a screw jack;
A fifth step of installing a secondary event on the primary event;
A sixth step of assembling a steel formwork so as to correspond to an upper end of the inflow portion using a support material on the secondary event;
A seventh process of placing and curing concrete after placing reinforcing bars in connection with the basic concrete structure on the front surface of the steel formwork;
An eighth step of disassembling the support material to separate the steel formwork from the upper end of the inlet, and then lowering the screw jack to interview the wheel of the primary event and the guide rail when curing is completed; And
Steel foam for the inlet of the tidal power plant and the method of construction of the inlet using the same, characterized in that the first step, the second and the second form and the steel formwork is drawn out by a predetermined length by using the extraction equipment separated by a ninth process .

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