KR100854806B1 - Deck plate - Google Patents

Abstract

A deck plate reinforced by a PS wire and attached with a pi-shaped reinforcement is provided to make inspection and maintenance easy, to prevent shear cracks effectively, to exclude the additional arrangement of shear bars, and to prevent the formation of cracks by compressive stress pre-applied by PS steel. A deck plate reinforced by a PS wire and attached with a pi-shaped reinforcement comprises a concrete structure(10) forming the external appearance of a deck plate, a PS wire(20) generating compressive stress to the concrete structure, and a pi-shaped reinforcement(30) projected from the concrete structure to function as a shear reinforcement and to arrange slab bars at the top.

Description

Deck plate reinforced with P.S steel wire and installed with pie type reinforcement {DECK PLATE}

1 is a cross-sectional view of the conventional deck plate,

2 is a perspective view of the deck plate according to the present invention,

3 is a partial cross-sectional view of a deck plate according to the present invention.

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

10: concrete structure

11: recess

12: convex

20: PS liner

30: pie reinforcement

31: seating part

The present invention relates to a deck plate reinforced with a PS steel wire and installed with a pie-shaped reinforcement, and more particularly, is easy to check and maintain, effectively prevents shear cracking, and does not require additional arrangement of shear reinforcing bars. The present invention relates to a deck plate reinforced with a PI steel wire and provided with a pie-shaped reinforcement to prevent cracking by pre-introduced compressive stress.

In general, during bridge construction, the uneven deck plate composed mainly of steel plates is laid between the structural frame and the frame, and concrete is poured on the deck plate (see FIG. 1).

Accordingly, even after the construction, even if the state of the concrete structure, that is, cracks or deformations, since the deck plate is located on the bottom of the concrete structure, it is difficult to check or find it with the naked eye, and thus there are many difficulties in checking and maintaining the bridge.

In addition, there was a construction trouble to additionally arrange the shear reinforcing bar and the slab upper bar.

The present invention has been made to solve the above conventional problems, the purpose of which is easy to check and maintain, effectively prevent shear cracking and do not need to arrange additional shear rebar, as well as being introduced in advance by the steel The present invention provides a deck plate reinforced with a PS steel wire and provided with a pie-shaped reinforcement to prevent cracking by compressive stress.

The present invention, in order to achieve the above technical problem, the concrete structure to form the appearance of the deck plate, and the concrete structure is disposed at a predetermined interval, but the concrete structure after the tensile force is applied to both ends before the concrete structure is cured It is characterized in that the PI steel wire is removed from the tensile force to have a compressive stress, and the pie type reinforcement to protrude from the concrete structure and to reinforce the slab reinforcement on the upper side.

In addition, the pie-shaped reinforcement is characterized in that the bottom portion is bound to each of the steel wires of the PS steel wire and the upper end protrudes from the concrete structure, the seating portion is formed so as to reinforce the slab reinforcement.

And the concrete structure is characterized in that the concave portion is formed on one side connection surface and the convex portion is formed on the other connection surface to have mutual airtightness when installed continuously.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the deck plate (hereinafter referred to as "deck plate") is reinforced with the PS steel wire and the pie-shaped reinforcement is installed according to the present invention.

2 is a perspective view of the deck plate according to the present invention, Figure 3 is a partial cross-sectional view of the deck plate according to the present invention.

First, as shown in FIGS. 1 and 2, the deck plate according to the present invention has a concrete structure 10 that largely forms an exterior of the deck plate, and a PS steel wire 20 for generating compressive stress in the concrete structure 10. And, protruding from the concrete structure 10 is composed of a pie-shaped reinforcement (30) to be able to reinforce the role of shear reinforcement and the slab reinforcement (not shown) on the upper end. Reference numeral 40 is a finishing material located at the end after the continuous installation of the deck plate.

The PS steel wire 20 of the above technical configuration is to prevent the crack of the concrete structure 10 by generating a compressive stress on the concrete structure 10, for this purpose formwork for forming the concrete structure (10) The PS steel wire 20 is disposed at regular intervals in), and a tensile force is applied to both ends thereof, and then when the concrete poured in the form is hardened, the tensile force applied to the PS steel wire 20 is removed.

Accordingly, the concrete structure 10 has a compressive stress by the contracting action of the PS steel wire 20 fixed to the concrete structure 10 integrally.

Pie-shaped reinforcement 30 of the above technical configuration is to form a concrete structure 10 and the slab integrally to have a shear resistance capability, for this purpose, the lower end of each of the steel wires located on both sides of the PS steel wire 20 A binding portion 31 is formed at the upper end thereof so that the upper end thereof may protrude from the concrete structure 10 and reinforce the slab reinforcement.

Accordingly, when the slab is completed by placing concrete, the deck plate and the slab are firmly built by the pie-shaped reinforcement 30, and the bridge deck plate is supported by the compression lifting force of the deck plate constituting the lower bridge. By bringing, it has crack resistance even if load is applied to bridge.

Meanwhile, the deck plate is continuously installed between the frame for the bridge structure and the frame, and concave on one side of the concrete structure 10 to prevent the concrete from flowing down into the gap between the deck plate and the deck plate when the concrete is placed. The part 11 is formed and the convex part 12 is formed in the other connection surface.

As a result, the convex portions 12 of the other deck plates are positioned in the recesses 11 of the deck plate, whereby they are assembled to each other, resulting in mutual airtightness between the deck plate and the deck plate.

And the deck plate according to the present invention itself is an integrated concrete structure 10, when cracks or deformation occurs, it can be easily identified or found with the naked eye is very easy to check and maintain.

As described in detail above, according to the present invention is made of a concrete structure is exposed to the lower portion of the bridge during installation, it is easy to check or find with the naked eye when cracks or deformation occurs, there is an effect that the inspection and maintenance is very easy accordingly. .

In addition, the present invention has the effect that the compressive stress acts on the concrete structure by the intrinsic PS steel wire, is integrally constructed with the slab by the pie-shaped reinforcement and can effectively prevent shear cracking by performing the role of shear reinforcing steel. .

Claims (3)

In deck plate, A concrete structure forming the exterior of the deck plate, PS steel wire which is disposed on the concrete structure at regular intervals, but the tensile force is applied to both ends before the concrete structure is cured, and the tensile force is removed so that the concrete structure has a compressive stress after curing. The deck plate protruded from the concrete structure is provided with a PI-type reinforcement, characterized in that the reinforcing bar to reinforce the role of the shear reinforcement and the slab reinforcement on the upper side of the deck plate and the pie-shaped reinforcement is installed. The method of claim 1, The pie-shaped reinforcement is characterized in that the lower end is bound to each of the steel wires located on both sides of the PS steel wire and the upper end is protruded from the concrete structure, the role of shear reinforcing reinforcement and the seating portion is formed so as to reinforce the slab reinforcement Deck plate reinforced with steel wire and installed with pi reinforcement. The method of claim 1, The concrete structure is a deck plate is reinforced with a pie steel reinforcement and pie type reinforcement, characterized in that the concave portion is formed on one side connection surface and the convex portion is formed on the other connection surface to have mutual airtightness when continuously installed.

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