KR19990073793A - Composite Deck Plates (6) - Google Patents

Abstract

The present invention relates to a deck plate for the composite structure largely consists of a lower plate 10, side plate 11, the upper plate 12 is repeatedly bent in the form of a trapezoid with one side as a whole. At the intersection of the upper plate 12 and the side plate 11 and at the intersection of the side plate 11 and the lower plate, coupling grooves of triangular and fan-shaped shapes are formed, respectively, and concrete is filled in the coupling grooves to form a deck plate. Unity is promoted. The central lower plate 10A is formed with an inverted trapezoidal groove to easily install the insert for ceiling installation, and concrete is also filled around the inverted trapezoidal groove 15 to improve the structural performance of the composite section. When a load acts on the composite section between the concrete and the deck plate, a shear force acts between both structural members, and the embossing 16 having a predetermined shape protrudes from the side plate 11 to resist it. The embossing 16 may be formed in the shape of a rectangle, <-or x-shape, the rectangular embossing may be formed at right angles to the deck plate or may be formed to be inclined at a predetermined angle.

Description

Composite Deck Plates (6)

The present invention relates to a composite plate deck plate. More specifically, in case of placing concrete using deck plate as slab formwork in steel frame construction or reinforced concrete construction, composite structural decks that allow deck plate to bear tensile force acting on composite section of concrete and deck plate in addition to formwork. Relates to a plate.

In recent years, buildings built in urban areas have tended to become higher in order to maximize the efficiency of land use, and steel structures or steel reinforced concrete structures, which are excellent in durability and seismic resistance, are mainly adopted as structural forms of high-rise buildings. It is common to use deck plates in floor slab systems because of the need for air shortening and labor costs in these high-construction buildings.

Deck plates can be broadly divided into formwork and structural use. Deck plate for the formwork is simply a formwork of the deck plate bar bar, even if it does not have a fireproof coating on the deck plate, but the deck plate does not play a structural role has the disadvantage of increasing the amount of tensile reinforcement and concrete. Structural deck plate has the advantage of reducing the amount of reinforcing bar and concrete bar as the tension plate acts as a tension material, but it is not recognized as a fireproof structure in the current law has the disadvantage that you need to additionally install a fireproof coating.

In order to improve the structural performance of the composite section between concrete and deck plate and to be recognized as a fireproof structural material, the deck plate and concrete composite section must be fully integrated to secure the strong adhesion between the deck plate and the concrete. It is closely related to the shape of the deck plate. Therefore, the present inventors have developed a deck plate of a new shape that can be strongly integrated with the deck plate and concrete.

An object of the present invention is to provide a deck plate for a composite structure of a new shape that can ensure sufficient adhesion between the deck plate and concrete.

It is another object of the present invention to provide a method for securing a slab structure without fireproof coating by securing sufficient adhesion between concrete and deck plate.

1 and 2 are perspective views of the deck plate.

3 is a cross-sectional view of the deck plate.

4 is a cross-sectional view of the concrete poured state using the deck plate.

<Description of Symbols for Main Parts of Drawings>

1: deck plate 2: steel beam

3: rebar 4: spacer

5: concrete 10: lower plate

10A: center lower plate 10B: end side lower plate

11: side plate 12: top plate

13: upper coupling groove 14: lower coupling groove

15: historical trapezoidal groove 16: embossing

17: right coupling portion 18: left coupling portion

The present invention will be described with reference to the drawings.

Deck plate is largely composed of the lower plate 10, side plate 11, the upper plate 12 and is repeatedly bent in a trapezoidal shape as a whole. The lower plate 10 is divided into a central lower plate 10A and an end side lower plate 10B, and the side plate 11 is bent upward at both ends of the central lower plate 10A and an inner end of the end lower plate 10B. Top plate 12 is bent horizontally at the top of the side plate (11). In order to secure sufficient adhesion between the concrete and the deck plate, an upper coupling groove 13 is formed at the intersection of the upper plate 12 and the side plate 11 in the shape of a right triangle, and the lower plate 10 and the side plate. At the intersection of (11) is formed a lower engaging groove 14 which is recessed in a fan shape. When concrete is poured, the upper and lower coupling grooves 13 and 14 are filled with concrete so that the concrete and the deck plate behave as one body.

The center upper plate 12 is formed with an inverted trapezoidal groove 15 so that an insert for ceiling installation can be purchased in the inverted trapezoidal groove 15 so that the anchor plate does not need to be anchored separately when the ceiling is installed. This is to maximize the structural performance of the composite slab as well as to prevent cross-sectional loss of deck plates. In addition, by filling the concrete around the inverted trapezoidal groove 15, it is possible to secure a strong adhesion between the concrete and the deck plate.

When a load is applied to the composite slab, a sliding force acts between the concrete and the deck plate, and the shear force causes the strength and destruction of the composite slab, and it is necessary to resist the sliding force at the interface between the concrete and the deck plate. have. Therefore, the embossing 16 protruding in a predetermined shape on the deck plate surface to form a resistance to the sliding force between the concrete and the deck plate. The embossing 16 may be formed into various shapes such as rectangular, <, and x-shaped shapes. The rectangular embossing 16 may be formed at right angles to the deck plate, or may be formed to be inclined at a predetermined angle. have.

At the outer end of the lower end plate 10B, the right coupling part 17 and the left coupling part 18 are machined to couple the deck plate and the deck plate, and the left and right coupling parts 17 and 18 are one-touch. It can be attached and detached quickly so that the deck plate can be installed quickly. The right coupling part 17 is bent upward from the end side lower plate 10B and bent in a semicircular shape. The left coupling portion 18 has a semicircular curve of the same shape so as to be coupled to the right coupling portion, and is further bent in a semicircle below the outside of the semicircular curve so that the right coupling portion 17 of the adjacent deck plate is fitted. It is supposed to be.

The left and right coupling parts 17 and 18 may be modified in the following manner. The right coupling part 17 is bent vertically upward at the outer end of the lower end plate 10B and is bent again inward at an angle of 45 °, so that the left coupling part 18 can be engaged with the right coupling part. At the end bent in the same shape and bent at 45 °, it is again bent perpendicularly to the 45 ° bend to allow the right engaging portion 17 of the adjacent deck plate to fit.

4 is a state in which concrete is poured using a deck plate, and describes the procedure of constructing a slab structure using the deck plate.

First, the deck plate manufactured according to the standard is brought into the required position and installed on the steel girder beam or reinforced concrete beam. The installed deck plate is fixed by spot welding on the cheolgolbo to prevent accidents such as the deck plate being turned over by the wind. The deck plate and deck plate are connected, and an end closure is installed at the end of the deck plate, and a concrete stopper is installed at the end of the slab. When the installation of the deck plate is completed, the reinforcing bar is reinforcement. The reinforcing bar reinforcement uses a dedicated spacer for the deck plate. The spacer is manufactured by bending a linear member such as an iron wire, and is bent in the shape of the upper coupling groove 13 so that both ends of the horizontal wire can be fitted into the deck plate upper coupling groove 13, and The middle was bent upward in the form of a triangle, and the top of the triangle was formed with a groove for placing the rebar. In addition to the purpose of facilitating the reinforcement of the reinforcing bar, the spacer has an action of integrally combining the concrete and the deck plate after the end of the spacer is fitted into the deck plate upper coupling groove 13.

When the reinforcement is completed, the concrete is poured to complete the slab structure.

By using the deck plate for the composite structure of the present invention, the structural strength of the composite slab is increased, it is economical to be able to construct even larger structures using deck plates of the same thickness.

In addition, since the fireproof coating does not need to be separately applied to the lower surface after the construction of the deck plate, the construction cost of the fireproof coating can be reduced, and the interference with other types of construction is reduced, which is advantageous in reducing the air.

Claims (3)

Center lower plate 10A; End-side lower plate 10B; Side plates 11 which are bent upward at both ends of the central lower plate 10A and at the inner ends of the end-side lower plate 10B; An upper plate 12 bent horizontally at an upper end of the side plate 11; An upper coupling groove 13 formed at an intersection of the upper plate 12 and the side plate 11; A lower coupling groove 14 formed at an intersection of the side plate 11 and the central lower plate 10A or the end lower plate 10B; And, Left and right coupling parts (17, 18) formed at an outer end of the end side lower plate (10B); Composed of a composite structural deck plate, characterized in that repeatedly bent in the form of a trapezoidal trapezoidal shape as a whole. The composite deck plate of claim 1, wherein an inverted trapezoidal groove (15) is formed in the central lower plate (10A). The deck plate for composite structure according to claim 1 or 2, wherein the side plate (11) has a rectangular, <-or x-shaped embossing (16) protruding at regular intervals.