KR102025048B1 - Precast concrete deck module - Google Patents

Abstract

The present invention relates to a precast concrete deck plate module and its installation member, and more particularly, to form a protrusion on the side surface of the bottom plate in the precast concrete deck having a joint structure by the side protrusion between the neighboring bottom plate And it further comprises a steel anchor provided in the duct structure, and inserting the connecting reinforcement into the connecting reinforcing grooves formed in the side projections and steel anchors, the precast concrete deck plate module is a method that the steel anchor resists the tensile resistance Excellent, thereby preventing leakage caused by tensile cracks in the joint, less spalling cracks due to the amount of joints placed, less lateral protrusion configuration, excellent manufacturing quality, and polyurea in the filler To increase the tensile resistance of joints and to prevent leakage and reinforcement of steel bars-steel anchors We can expect the effect of increasing the adhesion to pre-cast concrete floor plate modules.

Description

Precast concrete deck module

The present invention relates to a precast concrete deck plate module and its installation member, and more particularly, to form a bottom plate side protrusion in a precast concrete bottom plate having a joint structure by the protrusion part between the adjacent bottom plate. And further comprising a steel anchor provided in the duct structure, by inserting the connecting reinforcement into the steel anchor seating groove formed in the side anchor and the steel anchor plate of the steel anchor to minimize the cracks generated in the boundary between the neighboring bottom plate in common A precast concrete deck plate module is provided to prevent leakage.

In recent years, precast concrete deck has been developed and used in consideration of superior performance and workability compared to existing structural types. The precast concrete slabs prefabricated in the factory are installed on the top of the concrete girder or steel casting mold and synthesized integrally with the shear connector to form the bridge.

Patent Application No. 2006-0063203 'Precast Concrete Deck Module with Reinforced Loop Reinforced Joint, its Joint Structure and Precast Concrete Deck with the Same' has been proposed with respect to the conventional precast concrete deck module. .

A precast concrete deck module that is assembled and connected to each other to form a precast concrete deck, each protruding portion is formed at the bottom of both ends of the bottom deck module, the concave form when the neighboring bottom module facing each other A half-shaped recess is formed at the upper portion of the protrusion so that the reinforcing portion of the roof is exposed inside the bottom plate module so that the loop-shaped reinforcing end is exposed to the recess. Embedded in the protrusion to function as a lifting reinforcement for reinforcing the protrusion and the upper part of the loop reinforcement exposed to the concave portion, and at the position between the loop reinforcement, the adjacent bottom plate when the neighboring bottom plate module faces The rebar end of the loop rebar provided in the module is located A pre-cast concrete deck module that the reinforced end portions of the roof reinforcement that is added to the upper surface has fine recessed step of the projection formed so as to be positioned so shifted to overlap each other in the recess.

Conventional precast concrete deck module is configured in this way, is mounted on the top of the bridge girder, the bottom plate modules are aligned and installed, the formwork is installed on both sides and then finished with a filling material (concrete casting) bottom plate on both sides It is a structure that is assembled by connecting modules together.

By the way, in the conventional precast concrete deck plate module, a protrusion is formed in the lower portion of the recess in which the roof reinforcement extends, and the lower portion of the roof coil is buried in a form coinciding with the upper surface of the protrusion. Therefore, the protruding portion has a stepped portion so that the loop reinforcement of the neighboring bottom plate module can be disposed in the region where the loop reinforcement is not provided. That is, the protrusion has a structure in which the protrusion in which the lower portion of the loop reinforcement is embedded and the stepped portion are alternately formed.

Therefore, since the upper surface of the loop reinforcement is buried to form a protrusion, and the step is formed between the protrusions, it is very vulnerable to impact, which is a disadvantage that the risk of damage and breakage during transportation or installation is very high. have.

In addition, it is necessary to fill the space of the joint part using the loop reinforcement, that is, the filling part (for example, concrete pouring), and for this, formwork must be installed on both sides, and the work safety of the worker due to the formwork installation and removal, The problem of increased cost and longer air is caused.

Patent application 2006-0063203

The present invention was created in order to improve the problems of the prior art using the roof reinforcement as described above, prefabricated precast concrete floor plate to prefabricated to manufacture the top plate of the concrete bridge to shorten the construction period by minimizing on-site concrete casting The purpose is to provide.

In addition, it is another object of the present invention to provide a prefabricated concrete floor plate with a function of simplifying the work and shortening the construction date by integrally manufacturing the auxiliary facilities of the bridge top plate so that it can be constructed by assembling without additional work in the field.

It is another object of the present invention to provide a prefabricated concrete floorboard with prefabricated concrete floorboards and girders, which are equipped with functions for enhancing adhesion between neighboring floorboards.

Features of the present invention for achieving the above object is a precast concrete deck plate module is installed on top of the bridge to form a bridge superstructure with a girder,

A part of the side surface of the bottom plate is provided with a protrusion shape, a plurality of bottom plates are seated on the girder to form a top plate of the bridge by mutually coupling between neighboring bottom plates, and the part of the side surface of the bottom plate that is coupled to each other is provided in a protrusion shape The protrusion configuration is alternately located between adjacent bottom plates, the space formed by the alternately adjacent protrusions are filled with mortar, and the filled mortar may be composed of a mortar containing polyurea.

In addition, the projections on the side of the precast concrete floor plate is further provided with connecting reinforcing bar for connecting the neighboring bottom plate, the projection top surface may further include a connecting reinforcing groove for seating the connection reinforcing bar.

In addition, a steel anchor may be further provided in the protruding region of the side surface of the precast concrete deck.

In addition, the steel anchor plate upper surface of the steel anchor may be further provided with a steel anchor seating groove for seating the connecting reinforcement.

The precast concrete deck further includes a shear pocket for fixing with the girder, the shear pocket is formed in a plurality of penetrating through the upper and lower portions corresponding to the girder, the coupling space with the girder To provide; A mortar which is injected into the shear pocket to couple the precast concrete bottom plate and the girder through curing; and a shear reinforcement coupled to an upper surface of the girder and disposed inside the shear pocket; This may be further provided.

In addition, a backup material may be further provided at a lower end of the neighboring precast concrete bottom plate side so that mortar does not leak before mortar is injected.

In addition, the shear pocket may be filled with non-contraction mortar 150A, or mortar 150B including polyurea.

On the other hand, as another means for achieving the above-described technical problem, in the construction method of the precast concrete deck board module, (a) mounting the shear pocket of the precast concrete deck to match the shear rebar installed in the girder; (b) arranging the side protruding configurations of the plurality of precast concrete decks adjacent to each other so as to be alternately positioned; and (c) in a space formed by the side projections of the adjacent precast concrete decks. Filling mortar, but the mortar is filled may be composed of a mortar (150B) containing a polyurea.

In addition, the shear pocket may be filled with non-contraction mortar 150A, or mortar 150B including polyurea.

Precast concrete deck plate module of the present invention is excellent in tensile resistance because the steel anchor is a resistance, thereby preventing leakage caused by the tensile cracks of the joint, less amount of joint pour less fear of shrinkage cracks, side projections Its simple configuration makes it excellent in manufacturing quality, and it can be expected to mix polyurea with fillers to increase the tensile resistance of joints, prevent leakage, and increase the adhesion of reinforcement bars-steel anchors-side protrusions.

1 to 3 are views showing precast concrete decks according to the prior art.
4a to 4i are views illustrating a precast concrete deck plate manufacturing process.
5 is a view showing the coupling of the precast concrete deck and girder.
6A and 6B show the arrangement between neighboring precast concrete decks.
7 is a view showing the side configuration of the neighboring precast concrete deck.
8 is a view showing the shape of the steel anchor.
9 is a view showing that the connecting reinforcement bar between neighboring precast concrete deck.
FIG. 10 is a view illustrating mortar injection between neighboring precast concrete deck plates and a shear pocket. FIG.
11 is a view showing that the backing material is installed in the bottom plate to inject mortar between neighboring precast concrete deck plate.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It is to be understood that the various embodiments of the invention are different, but need not be mutually exclusive. For example, specific shapes, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention with respect to one embodiment. In addition, it is to be understood that the location or arrangement of individual components within each disclosed embodiment may be changed without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims, along with the full scope of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention.

The girder 10 is a component that is installed on the pier while connecting the pier to provide a space for the superstructure.

The precast concrete floorboards are each manufactured in a set size and placed on the girder 10 to form a plurality of bridges by mutual coupling while forming a plurality of protrusions, and protrusions 120 are formed on a portion of the neighboring floorboards for mutual coupling efficiency. It may be a structure.

Here, when looking at the precast concrete, precast concrete is abbreviated as PC, and is a reinforced concrete member molded in a mold in a factory or the like. The factory has a fixed facility (columns, beams, floor plates, etc.), which is manufactured by precast concrete deck plate formwork (M), and short-term maintenance in high temperature and high humidity steam storage room. The product can be transported to the construction site and constructed in a prefabricated structure.

Precast means "pre-baked," which is a member made at the factory. Typically, a girder of a bridge is an example. In some cases, a pier or slab is also precast to assemble the entire structure.

In the present invention, the floor plate made of precast concrete, and the manufacturing method and construction method thereof.

A portion of one side of the precast concrete deck is formed in the shape of the projection 120 and the other side of the collinear is formed in a planar shape, so that the configuration of the projection 120 between the sides of the neighboring precast concrete deck is alternate. Are located adjacent to.

The steel anchor 110 is arranged to be parallel to the short side direction of the bottom plate, such as the reinforcing bar (R), wherein the steel anchor 110 is a projection 120 region of the side surface of the precast concrete bottom plate Installed to be included.

The steel anchor 110 is preferably installed so as not to interfere with the reinforcing bar (R) in the bottom plate, but interfere with the reinforcing bar (R) or the reinforcing bar (R) is a steel anchor (110) It may be installed to penetrate.

When the reinforcing bar (R) is installed to interfere with or penetrate the steel anchor (110), it can be fixed by welding the site where the steel anchor 110 and the reinforcing bar (R) contact.

The steel anchor 110 embedded in the bottom plate is composed of a steel anchor plate 111 and the steel anchor reinforcement plate 112, the steel anchor reinforcement plate 112 is welded vertically to the end of the steel anchor plate 111 The steel anchor reinforcement plate 112 has a function of improving the fixing force of the steel anchor plate 111 in the bottom plate and at the same time suppressing the moment generation of the steel anchor plate 111 so as not to be rotated in the bottom plate. In charge.

When the precast concrete deck is constructed, the protrusions 120 of the side surfaces of the bottom plates which are adjacent to each other on the left and right sides are alternately arranged so that the side surfaces of the bottom plates are not caused to interfere with each other.

In addition, when the precast concrete deck is installed on the top of the girder 10, it is preferable that the connection reinforcing grooves 121 formed in the side projections 120 of the bottom plate is disposed in the longitudinal direction to be connected. In this case, when the precast concrete deck is installed, the bridge deck can be constructed at the correct construction position, and precast because the connecting reinforcing bars 140 can be seated in the connecting reinforcing bars 121 adjacent to each other. It can firmly bond between the concrete decks.

The steel anchor plate 111 may be further provided with a steel anchor hole 114 in order to improve the bonding to the bottom plate side protrusion concrete in addition to the mounting groove 113 for mounting the upper connection member.

The shear pocket 130 and the shear reinforcing bars 131 are components for fixing the precast concrete deck and the girders 10 and 50.

The front pocket 130 is formed in the plurality corresponding to the girder 10 through the upper and lower portions to provide a coupling space with the girder 10.

The mortar 150 may be injected into the shear pocket 130 to couple the precast concrete deck and the girder 10 through curing.

That is, the role of the mortar 150 and the shear pocket 130 is to firmly combine the precast concrete deck plate and the girder 10 to ultimately complete a large structure such as a concrete bridge.

The shear reinforcing bars 131 are made of steel and are integrally coupled to the upper portion of the girder 10 to be disposed inside the shear pocket 130, and have a loop type or irregularities to increase the contact area with the mortar 150. You can.

The worker may construct the shear reinforcing bars 131 in a state in which the shear reinforcing bars 131 are manufactured integrally in the manufacturing step of the girder 10 in the factory or directly by welding in the field.

The mortar 150 may be a mortar 150A or a mortar 150B including polyurea.

Anhydrous mortar supplements the problem of dry shrinkage in the curing process of concrete and is effective in minimizing shrinkage and reducing joint cracks.

The mortar containing polyurea is included in the mortar composition in order to promote the waterproofing property and adhesion strength of the polyurea.

Mortar 150 is injected between the shear pocket and the neighboring bottom plate may be coupled between the bottom plate and the girder 10, the bottom plate and the bottom plate through curing.

Non-shrink mortar 150A is filled in the front end pocket, and mortar 150B including polyurea may be applied between neighboring bottom plates, or vice versa.

The backup material 160 may be disposed to prevent mortar 150 from leaking between neighboring bottom plates when the precast concrete deck is disposed.

The backup material 160 may use any material as long as it can prevent the mortar 150 from leaking.

The connecting reinforcing bar 140 is provided between the neighboring bottom plate.

The connecting reinforcing bars 140 can be firmly coupled between the precast concrete deck because the connection between the predetermined steel reinforcing rods 140 and the side projections 120 in the steel anchors (110) and side projections 120 adjacent to each other. .

By arranging the connecting reinforcing bar recess 113 to be placed on a vertical centerline at a position where the inter-planar protrusions 120 intersect with each other, accurate construction of the precast bridge deck becomes possible and the connecting reinforcing bars adjacent to each other. Since the connection groove 140 may be seated and connected to the seating groove 113, there is an advantage in that the connection between the precast concrete floor plates is firmly connected.

As a method of manufacturing the prefabricated concrete deck plate of the present invention, the worker is (a) installing the precast concrete deck plate formwork (M); (b) the reinforcing bar reinforced to the precast concrete deck plate formwork (M) (C) arranging the steel anchor 110 for synthesizing the bottom plate joint; (d) forming a pocket box for forming the shear pocket 130 for synthesizing with the bottom girder 10; (E) placing and curing concrete in the precast concrete deck plate formwork (M); (f) removing the pocket box for forming the shear pocket 130; and (g) precasting. Concrete deck slab formwork (M) demoulding and surface trimming step of the manufactured deck; You can work on your back.

A method of constructing the prefabricated concrete slab module of the present invention, comprising: (a) mounting the shear pocket 130 of the precast concrete slab to the shear reinforcement 131 installed in the girder 10; and (b) Arranging the side protrusions 120 of the plurality of precast concrete decks adjacent to each other so as to be alternately positioned; (c) the side protrusions 120 of the adjacent precast concrete decks formed by The operation may be performed while filling the space with mortar 150.

In the above, the present invention has been described based on the preferred embodiments, but the technical idea of the present invention is not limited thereto, and modifications or changes can be made within the scope of the claims. It will be apparent to those skilled in the art, and such modifications and variations will belong to the appended claims.

M; Precast Concrete Deck Formwork
R; Rebar
C; concrete
F; Shear pocket mold
10; Girder
110; Steel anchor
111; Steel anchor plate
112; Steel Anchor Reinforcement Plate
113; Steel anchor anchoring groove
114; Steel anchor hole
120; spin
121; Home
130; Shear Pocket
131; Shear rebar
140; Rebar
150; Mortar
150A; Anhydrous mortar
150B; Mortar with Polyurea
160; Backup material

Claims (9)

As a precast concrete deck plate module installed on the top of the bridge to form a bridge superstructure with the girder 10,
A portion of the side surface of the bottom plate is provided in the shape of a protrusion 120,
A plurality of bottom plates are seated on the girder 10 and coupled to each other between neighboring bottom plates to form a top plate of the bridge,
A portion of the bottom plate side surface to be coupled to each other is provided in the shape of the projection 120, the configuration of the projection 120 between neighboring bottom plates are alternately positioned,
The mortar 150 is filled in a space formed by the alternately adjacent protrusions 120.
Pre-filled concrete mortar module is characterized in that the mortar is filled with a mortar (150B) containing polyurea. The method of claim 1,
The protrusion 120 of the side surface of the precast concrete bottom plate is further provided with connecting reinforcing bar for connecting the neighboring bottom plate, the upper surface of the protrusion 120 is further provided with a connecting reinforcing groove for seating the connecting reinforcing bar Precast concrete deck module, characterized in that the.
The method according to claim 2,
Precast concrete floor plate module, characterized in that the steel anchor 110 is further provided in the projection (120) area of the side of the precast concrete floor plate.
The method of claim 3, wherein
Precast concrete baseplate module, characterized in that the steel anchor 110 is further provided with a steel anchor seating groove for seating the connecting reinforcement.
The method according to claim 2,
The precast concrete deck further includes a front pocket 130 for fixing with the girder 10,
The front pocket 130, the plurality of penetrating the upper and lower portions formed in the portion corresponding to the girder (10) to provide a coupling space with the girder (10);
Mortar 150 is injected into the shear pocket 130 to couple the precast concrete bottom plate and the girder 10 through curing;
Shear reinforcing bars (131) coupled to the upper surface of the girder (10) and disposed inside the shear pocket (130); Precast concrete deck plate module characterized in that the further provided.
The method of claim 1,
Precast concrete floorboard module, characterized in that the backing material 160 is further provided on the lower end of the neighboring precast concrete floorboard side mortar 150 does not leak before the mortar 150 is injected.
The method according to claim 5,
The front pocket is filled with non-shrink mortar (150A), or pre-cast concrete floorboard module, characterized in that the mortar (150B) containing polyurea can be filled.
In the construction method of the precast concrete deck module of any one of claims 1 to 6,
Mounting the shear pocket 130 of the precast concrete deck according to the shear reinforcing bars 131 installed on the girder 10;
Arranging the side protrusions 120 of the plurality of precast concrete decks adjacent to each other such that they are alternately located;
Filling the mortar 150 in the space formed by the side protrusions 120 of the adjacent precast concrete deck plate; but the mortar is filled comprises a mortar (150B) containing polyurea Precast concrete deck module construction method
The method of claim 8, wherein the shear pocket is filled with a non-shrink mortar (150A), or a mortar (150B) containing a polyurea is precast concrete deck module construction method.

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