KR20160030695A - One-way hollow slab precast modul and construction method thereof - Google Patents

One-way hollow slab precast modul and construction method thereof Download PDF

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Publication number
KR20160030695A
KR20160030695A KR1020140120186A KR20140120186A KR20160030695A KR 20160030695 A KR20160030695 A KR 20160030695A KR 1020140120186 A KR1020140120186 A KR 1020140120186A KR 20140120186 A KR20140120186 A KR 20140120186A KR 20160030695 A KR20160030695 A KR 20160030695A
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South Korea
Prior art keywords
hollow slab
shear reinforcement
module
hollow
unidirectional
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KR1020140120186A
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Korean (ko)
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강주원
김기철
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영남대학교 산학협력단
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Priority to KR1020140120186A priority Critical patent/KR20160030695A/en
Publication of KR20160030695A publication Critical patent/KR20160030695A/en

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E04B5/043—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement having elongated hollow cores
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
    • E04C5/0645—Shear reinforcements, e.g. shearheads for floor slabs

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The present invention relates to a one-way hollow slab precast module and a construction method thereof which do not require the installation of a connection member to facilitate installation, to reduce the number of members, and to have a simple process such that construction periods can be reduced. The one-way hollow slab precast module comprises: a truss structure (10) having lower rebars (11) and shear reinforcement parts (12) repeatedly formed in an uneven shape while being arranged at predetermined intervals in a longitudinal direction of the lower rebars (11) to meet the lower rebars (11) at right angles; hollow bodies (20) fixated to the shear reinforcement parts (12); and concrete (30) to surround the hollow bodies (20) and the truss structure (10) to be fixed in a state where both ends of the shear reinforcement parts (12) are exposed to the outside. According to an embodiment of the present invention, when the one-way hollow slab precast modules are connected to each other, both ends of the shear reinforcement parts exposed to the outside are overlapped with each other to be fixated by mortar; thereby eliminating the installation of a connection member. Thus, the present invention facilitates the installation, reduces the number of members, has a simple process, and reduces construction periods.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a one-way hollow slab precast module and a construction method thereof,

The present invention relates to a unidirectional hollow slab precast module and a method of constructing the same, which can simplify installation, reduce the number of members, simplify the process, and shorten a construction period.

A hollow core slab used as one of the structural members of a building has a hollow body or a lightweight body at the center. The hollow core slab has a hollow body or a lightweight body. The weight of the hollow body slab is reduced to reduce the weight of the slab, Slabs are advantageous not only for the advantages of long span and flatslab but also for reducing interlayer noise.

As a conventional hollow type slab, there have been proposed a method of manufacturing a hollow slab, such as the Korean Patent Registration No. 10-0875698 (unit panel for a hollow slab) and Korean Patent Laid-Open No. 10-2014-0039699 (a method of manufacturing a precast modular for a hollow slab, And a bridge construction method using the same).

However, when the hollow slab is manufactured in the field, there is a problem that the quality is deteriorated due to the buoyancy of the lightweight body and the time and cost for fixing the hollow slab is high.

Particularly, the technology of Korean Patent No. 10-0875698 has the following problems. First, since the hollow slab of a conventional hollow slab has a reduced shear performance due to the reduction of the cross-section of the concrete due to the hollow body (pipe), in order to secure a constant shear performance It is necessary to increase the thickness of the slab or to install the shear reinforcement separately and to install the shear reinforcement in a considerably troublesome manner. Secondly, in setting the reinforcing bars of the hollow slab, the main ropes (upper and lower) (Hollow tube) is difficult to fix. Therefore, it is difficult to keep the gap between concrete slabs and concrete slabs. Therefore, the structure of hollow slabs There is a problem that the performance is deteriorated.

On the other hand, in the technology of Korean Patent Laid-Open Publication No. 10-2014-0039699, a through hole is separately formed in the manufacturing process in order to interconnect the pre-cast modules of the hollow type, and the pre- There is a problem that the work is cumbersome, the cost increases due to the increase in the number of members, and the construction period becomes longer due to an increase in the number of processes.

The present invention has been made in order to solve the above problems and it is an object of the present invention to provide an unidirectional hollow slab precast which can be installed easily but can reduce the number of members and simplify the process, The purpose of this module is to provide a module and its construction method.

In order to accomplish the above object, in a one-way hollow slab precast module of the present invention,

And a shear reinforcement portion formed repeatedly in a concavo-convex shape and arranged at regular intervals along a longitudinal direction near the lower portion in a direction orthogonal to the lower portion;

A hollow body fixed to the shear reinforcement;

And concrete that surrounds the hollow body and the truss structure so that both ends of the shear reinforcement are exposed to the outside.

Here, both end portions of the front end reinforcing portion are bent so as to form a 'B'.

Further, in the present invention, at least one front end groove is formed along the longitudinal direction on the circumferential surface of the concrete.

In order to accomplish the above object, there is provided a method for constructing a one-way hollow slab precast module,

A truss structure formed on the upper surface of the bottom mold, the truss structure being formed repeatedly in the lower portion and in a concavo-convex shape and arranged at regular intervals along the longitudinal direction orthogonal to the lower portion in the vicinity of the lower portion, a hollow body fixed to the shear reinforcement portion, Directional hollow slab precast modules composed of concrete for enclosing a hollow body and a truss structure so that both ends of the shear reinforcement are exposed to the outside are disposed so as to face each other so that the ends of the shear reinforcement portion exposed to the outside of the concrete are overlapped with each other A hollow slab module installation step;

And a hollow slab module joining step of injecting mortar between the one-way hollow slab precast modules and curing the hollow slab precast modules.

In order to accomplish the above object, there is provided a method for constructing a one-way hollow slab precast module,

A truss structure consisting of a shear reinforcement formed repeatedly on the upper surface of the bottom mold and in a concavo-convex shape and arranged at regular intervals along the longitudinal direction perpendicular to the underneath, and a hollow body fixed to the shear reinforcement, Directional hollow slab pre-cast module comprising a hollow body and a truss structure which are wrapped and fixed to expose both ends of the shear reinforcement bent so as to be self-formed so as to be exposed to the outside, are spaced apart from each other, A hollow slab module installing step of arranging the end portions of the reinforcing portions so as to overlap with each other;

A hollow body mounting step of disposing a hollow body on an end of the overlapped shear reinforcement;

And a hollow slab module joining step of injecting mortar between the one-way hollow slab precast modules and curing the hollow slab precast modules.

Here, the concrete of the unidirectional hollow slab pre-cast module is provided with at least one front end groove along the longitudinal direction on the circumferential surface.

Here, the bottom mold is an H beam having a U-shaped cross-section whose interior is opened upward and which is provided in the vicinity of the lower portion along the inner longitudinal direction, or a bolt inserted into a unidirectional hollow slab precast module.

Here, the concrete of the unidirectional hollow slab pre-cast module is provided with at least one front end groove along the longitudinal direction on the circumferential surface.

According to the present embodiment, both ends of the unidirectional hollow slab pre-cast module are mutually fixed by mutual overlapping of both end portions of the shear reinforcement portion exposed to the outside, so that it is not necessary to provide a separate connecting member, There is an advantage in that the construction period can be shortened with the advantage of simplification and simplification of the process.

In addition, since both ends of the shear reinforcement exposed to the outside are formed to have a high one side and a low one, interference between the adjacent shear reinforcement parts can be eliminated, and the shear reinforcement parts can be disposed so as to overlap with each other. .

In addition, since the both ends of the shear reinforcement are bent in the shape of " b ", the hollow body can be easily arranged and fixed. Accordingly, since the hollow body fills a certain portion of the space, And there is an advantage that the weight of the self does not increase greatly after the construction.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining the production of a unidirectional hollow slab precast module according to the present invention. Fig.
2 is a perspective view illustrating a one-way hollow slab precast module according to the present invention.
FIG. 3 (a) is a front sectional view of a one-way hollow slab precast module according to the present invention, and FIG. 3 (b) is a front sectional view showing another embodiment of a shear reinforcement in the unidirectional hollow slab precast module according to the present invention.
4 is a perspective view showing another embodiment of the shear reinforcement in the one-way hollow slab precast module according to the present invention.
5 is a rear perspective view showing another embodiment of a mold for manufacturing a one-way hollow slab precast module according to the present invention.
FIGS. 6A and 6B are cross-sectional views of a one-way hollow slab precast module formed by the mold of FIG. 5;
Figs. 7 (a) to 7 (c) are views showing a construction process in a first embodiment of a one-way hollow slab precast module according to the present invention. Fig.
8 (a) to 8 (c) are views showing another construction of the uni-directional hollow slab precast module according to the first embodiment of the present invention.
9 (a) to 9 (c) are views showing another construction of the one-way hollow slab precast module according to the first embodiment of the present invention.
10A to 10D are views showing a construction process in a second embodiment of a one-way hollow slab precast module according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view illustrating a unidirectional hollow slab precast module according to the present invention. FIG. 3 (a) is a perspective view of a one-way hollow slab precast module according to the present invention, Sectional hollow slab precast module according to one embodiment of the present invention.

1 to 3 (a), the uni-directional hollow slab precast module according to the first embodiment of the present invention is composed of a truss structure 10, a hollow body 20, and a concrete 30.

1, the truss structure 10 is installed inside the dies 100. Both ends of the shear reinforcement 12 constituting the truss structure 10 are inserted into the through holes 101a of the dies 100 The hollow body 20 is arranged and fixed at regular intervals along the direction of the short side of the truss structure 10 and the concrete 30 is cured by being poured into the inside of the mold 100, After completion, the formwork 100 is disassembled to complete the one-way hollow slab precast module 1 according to the present invention.

The truss structure 10 is composed of a lower portion 11 and a shear reinforcement portion 12. In the case of the present embodiment, the truss structure 10 is wrapped by the concrete 30 to improve the shear performance, It functions to fix.

A plurality of the lower vicinity portions 11 are laid in the lower portion of the front end reinforcing portion 12 and function to resist the tensile force generated by the bending moment.

The front end reinforcing portion 12 is a reinforcing bar formed by repeatedly bending in a concavo-convex shape. In the present embodiment, the reinforcing portion 12 is arranged orthogonally to the lower portion 11 and arranged at regular intervals along the longitudinal direction of the lower portion 11.

Here, the front end reinforcing portion 12 is composed of the upper expansion rope 12a, the front end reinforcement rope 12b, and the lower reinforcement rope 12c to form a concave-convex shape, and the concave-convex form is continuously and repeatedly formed.

In particular, both end portions of the front end reinforcing portion 12 are exposed to the outside of the concrete 30, and both ends of the exposed front end reinforcing portion 12 are disposed opposite to each other. (See Fig. 7) via the mortar 200 so as to be overlapped with both ends of the shear reinforcement 12.

According to the present embodiment, the upper and lower reinforcement rods 12a and 12b and the lower reinforcement rope 12c of the shear reinforcement 12 are integral with each other, It is possible to solve the inconvenience which had to be done at a time, which makes the installation considerably simpler and more convenient, which is advantageous in that installation convenience and shear performance are greatly improved.

The hollow body 20 is inserted and fixed at predetermined intervals in the shear reinforcement 12 forming the concave and convex structure. According to the present embodiment, the upper reinforcement rope 12a of the shear reinforcement 12, Since the hollow body 20 is inserted and fixed between the front end reinforcement ropes 12b so that the movement of the hollow body 20 is restricted even when the concrete 30 is laid and the buoyancy of the hollow body 20 during compaction of the concrete 30 And the gap between the hollow bodies 20 is naturally adjusted by the lower power line 12c, so that the installation and construction are considerably convenient.

In addition, according to the present embodiment, the unidirectional hollow slab pre-cast modules 1 are overlapped with each other at both ends (see Fig. 3 (a)) of the shear reinforcement 12 exposed to the outside at the time of mutual connection, Since the one-way hollow slab pre-cast module 1 is not required to be fixed to each other, it is possible to simplify the installation while reducing the number of members and simplifying the process, .

In the present embodiment, the lower portion 11 is provided only at the lower portion of the front end reinforcing portion 12, but this is merely an example, and if necessary, It is also possible to provide an upper surface such as the vicinity (11).

Meanwhile, the one-way hollow slab precast module 1 shown in FIG. 3 (a) has a pair of unidirectional hollow slab precast modules 1 Are disposed adjacent to each other, the exposed shear reinforcement portions 12 interfere with each other, which is inconvenient for installation.

Therefore, in the present embodiment, either one of both ends of the shear reinforcement 12 exposed to the outside is formed as low as the thickness of the rebar, thereby eliminating the problem of interference as described above.

3 (b) is a front sectional view showing another embodiment of the shear reinforcement in the one-way hollow slab precast module according to the present invention.

According to the present embodiment, both ends of the front-end reinforcing portion 12 exposed to the outside are formed so as to have a high one side and a low one side so as to eliminate the interference between the adjacent shear reinforcing portions 12, So that it is not necessary to provide a separate connecting member for interconnecting the unidirectional hollow slab precast modules 1, so that the construction becomes very convenient, Can be realized.

4 is a perspective view showing another embodiment of the shear reinforcement in the one-way hollow slab precast module 1 'according to the present invention.

The overall structure of the one-way hollow slab precast module 1 'of the present embodiment is the same as that of the previous embodiment except that both end portions of the shear reinforcement 12 exposed to the outside are bent so as to form a' Do.

As one example, since the unidirectional hollow slab precast modules 1 of the preceding embodiments must be filled with the mortar 200 (see FIGS. 7 to 9) between the unidirectional hollow slab precast modules 1 at the time of mutual connection, 200) is inevitably increased, which is not only disadvantageous from a cost point of view, but also raises its own weight after construction.

Accordingly, in the present embodiment, since both end portions of the shear reinforcement 12 exposed to the outside are bent in the 'C' shape, the hollow body 20 (see FIG. 10) can be easily arranged and fixed, As shown in FIG. 10, since the hollow body 20 fills a certain portion of the space, the mortar 200 can be charged in a small amount, so that the cost can be reduced, and the weight of the hollow body 20 itself does not increase significantly after the construction .

The unidirectional hollow slab precast module 1 'has a structure in which one end portion of the front end reinforcement portion 12 exposed to the outside is high and the other end portion thereof is low, as in the previous embodiment, 12 can be eliminated and the shear reinforcement portions 12 can be disposed so as to overlap with each other.

5 is a mold 100 'for manufacturing a one-way hollow slab precast module 1, 1', the overall shape of which is substantially the same as the mold 100 of FIG. 1, 31 are formed on both sides of the front end 101b.

6A and 6B) are formed on the circumferential surface (long side) of the concrete 30 by using the mold 100 'according to the present embodiment, and the front end grooves 31 The mortar 200 (see FIGS. 7 to 10) is filled to help improve bonding strength with neighboring one-way hollow slab precast modules 1, 1 '.

In the present embodiment, the front end grooves 31 are formed on the circumferential surface of the concrete 30 through the shear keys 101b of the form 100 '. However, this is only an example, It may be possible to form the front end grooves 31 through the chipping operation by using a mallet or the like on the peripheral surface of the unidirectional hollow slab pre-cast module 1, 1 '.

Hereinafter, a construction method of the one-way hollow slab precast module 1, 1 'according to the present invention will be described.

7 (a) to 7 (c) are views showing a construction process of the one-way hollow slab precast module 1 according to the first embodiment of the present invention, wherein FIG. 7 (a) FIG. 7 (c) shows a state in which the unidirectional hollow slab precast modules 1 are bonded to each other by the mortar 200, FIG. 7 (b) Fig.

1) Steps of installing hollow slab module

7A, a pair of one-way hollow slab pre-cast modules 1 are disposed apart from each other on the upper surface of a plate-shaped bottom mold 300, and a pair of unidirectional hollow slab precast modules 1, which are exposed to the outside of the concrete 30 The ends of the shear reinforcement 12 are made to overlap each other.

2) Bonding step of hollow slab module

As shown in Figs. 7 (b) and 7 (c), a pair of unidirectional hollow slab precast modules 1 are disposed between the unidirectional hollow slab precast modules 1 in a state of being spaced apart from each other, ) And then curing for a certain period of time.

Accordingly, the pair of unidirectional hollow slab precast modules 1 are integrally joined to each other through the mortar 200, and the respective ends of the mutually overlapping shear reinforcement portions 12 are also fixed by the mortar 200, It is possible to maintain a rigid fixed state without the connecting member of the connecting member.

Particularly, since the unidirectional hollow slab precast module 1 is provided with the front end grooves 31 on the periphery of the concrete 30, it is possible to increase the joining force with the neighboring unidirectional hollow slab precast module 1 by the mortar 200 .

Then, the one-way hollow slab pre-cast module 1 may be continuously constructed in the same manner as described above.

8 (a) to 8 (c) are views showing a construction process different from the first embodiment of the one-way hollow slab precast module according to the present invention, wherein FIG. 8 (a) 8 (b) is a view showing a step of joining a hollow slab module, and FIG. 8 (c) is a view showing a state in which the unidirectional hollow slab precast modules 1 are bonded to each other by the mortar 200 FIG.

1) Steps of installing hollow slab module

A pair of unidirectional hollow slab precast modules 1 are disposed apart from each other on a flange 401 of an H beam 400 in which bolts 410 are formed on an upper surface thereof, The end portions of the shear reinforcement 12 exposed to the outside of the sheath 30 are overlapped with each other.

2) Bonding step of hollow slab module

As shown in Figs. 8 (b) and 8 (c), a pair of unidirectional hollow slab precast modules 1 are disposed between the unidirectional hollow slab precast modules 1, ) And then curing for a certain period of time.

The pair of unidirectional hollow slab precast modules 1 and the H beams 400 are integrally joined to each other via the mortar 200 and are connected to the respective ends of the overlapped front end reinforcement portions 12 and the bolts 410 Is also fixed by the mortar 200, so that a very firm fixed state can be maintained.

Particularly, since the unidirectional hollow slab precast module 1 is provided with the front end grooves 31 on the periphery of the concrete 30, it is possible to increase the joining force with the neighboring unidirectional hollow slab precast module 1 by the mortar 200 .

Then, the one-way hollow slab pre-cast module 1 may be continuously constructed in the same manner as described above.

9 (a) to 9 (c) illustrate another construction of the one-way hollow slab pre-cast module according to the present invention, wherein FIG. 9 (a) 9 (b) is a view showing a step of joining a hollow slab module, and FIG. 9 (c) is a view showing a state in which the unidirectional hollow slab precast modules 1 are bonded together by the mortar 200 Fig.

1) Steps of installing hollow slab module

9A, a pair of unidirectional hollow slab pre-cast modules 1 are disposed apart from each other on the upper surface of a floor mold 500 for RC (Reinforced Concrete) beam forming, and the concrete 30 Of the shear reinforcement 12 exposed to the outside are overlapped with each other.

For reference, the mold 500 is a member whose interior is opened upward, and a lower vicinity 11 is arranged at regular intervals inside.

2) Bonding step of hollow slab module

As shown in Figs. 9 (b) and 9 (c), a pair of unidirectional hollow slab precast modules 1 are disposed between the unidirectional hollow slab precast modules 1, ) And then curing for a certain period of time.

Accordingly, the pair of unidirectional hollow slab precast modules 1 are integrally joined to each other via the mortar 200, and the respective ends of the mutually overlapping shear reinforcement portions 12 are also fixed by the mortar 200, It is possible to maintain a rigid fixed state. Particularly, RC (Reinforced Concrete) beams are formed naturally by the formwork 500, so that they are integrated with the uni-directional hollow slab precast module 1.

Particularly, since the unidirectional hollow slab precast module 1 is provided with the front end grooves 31 on the periphery of the concrete 30, it is possible to increase the joining force with the neighboring unidirectional hollow slab precast module 1 by the mortar 200 .

Then, the one-way hollow slab pre-cast module 1 may be continuously constructed in the same manner as described above.

10A to 10D are views showing a construction process in a second embodiment of the one-way hollow slab precast module according to the present invention, wherein FIG. 10A is a view showing a step of installing a hollow slab module, FIG. FIG. 10C is a view showing a step of joining the hollow slab module, and FIG. 10D is a view showing a state in which the unidirectional hollow slab precast module 1 'is bonded to each other by the mortar 200 .

1) Steps of installing hollow slab module

10A, a pair of unidirectional hollow slab pre-cast modules 1 'are disposed apart from each other on the upper surface of the plate-shaped bottom mold 300, and the shear reinforcement exposed to the outside of the concrete 30 Each end of the section 12, more specifically, each end of the shear reinforcement 12 bent in the '?'

2) Step of installing hollow body

10B, the hollow body 20 is disposed on the end portion of the "?'Shaped shear reinforcement 12 exposed to the outside and overlapped with each other, and then a separate fixing member (e.g., a wire or the like) So as to fix the shear reinforcement 12 to the shear reinforcement 12.

3) Bonding step of hollow slab module

Directional hollow slab precast module 1 in a state where the hollow body 20 is fixed to the front end reinforcing portion 12 of the pair of unidirectional hollow slab precast modules 1 'as shown in Figs. 10C and 10D, The mortar 200 is filled and then cured for a predetermined period of time.

Accordingly, the pair of unidirectional hollow slab precast modules 1 'and the hollow body 20 are integrally joined to each other through the mortar 200, and the respective ends of the mutually overlapping shear reinforcement portions 12 are also connected to the mortar Since the hollow body 20 fills a certain portion of the space, it is possible to reduce the cost by reducing the amount of the mortar 200, and it is possible to reduce the self weight Is not greatly increased.

Particularly, since the unidirectional hollow slab pre-cast module 1 'is provided with the front end grooves 31 on the periphery of the concrete 30, it is possible to prevent the bonding strength with the neighboring unidirectional hollow slab precast module 1' Can be further increased.

Then, the one-way hollow slab pre-cast module 1 'may be successively constructed in the same manner as described above.

On the other hand, after the completion of the construction, all the floor molds 300 and 500 are removed.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.

1,1 ': unidirectional hollow slab precast module
10: truss structure 11: underneath 12: shear reinforcement
12a: Upper reinforcement rope 12b: Shear reinforcement rope 12c: Lower reinforcement rope
20: hollow body 30: concrete 31: shear groove
100, 100 ': die 101a: through hole 101b: shear key

Claims (8)

And a shear reinforcement portion formed repeatedly in a concavo-convex shape and arranged at regular intervals along a longitudinal direction near the lower portion in a direction orthogonal to the lower portion;
A hollow body fixed to the shear reinforcement;
And a concrete body enclosing the hollow body and the truss structure so that both ends of the shear reinforcement are exposed to the outside.
The method according to claim 1,
And both ends of the shear reinforcement are bent so as to form a 'B'.
3. The method according to claim 1 or 2,
And a front end groove is formed along the longitudinal direction on a circumferential surface of the concrete.
A truss structure formed on the upper surface of the bottom mold, the truss structure being formed repeatedly in the lower portion and in a concavo-convex shape and arranged at regular intervals along the longitudinal direction orthogonal to the lower portion in the vicinity of the lower portion, a hollow body fixed to the shear reinforcement portion, Directional hollow slab precast modules composed of concrete for wrapping and fixing the hollow body and the truss structure so that both ends of the shear reinforcement are exposed to the outside are disposed so as to face each other so that the ends of the shear reinforcement portion exposed to the outside of the concrete are overlapped with each other A hollow slab module installation step;
And a hollow slab module joining step of injecting mortar between the unidirectional hollow slab precast modules and then curing the hollow slab modules.
A truss structure consisting of a shear reinforcement formed repeatedly on the upper surface of the bottom mold and in a concavo-convex shape and arranged at regular intervals along the longitudinal direction perpendicular to the underneath, and a hollow body fixed to the shear reinforcement, Directional hollow slab pre-cast module comprising a hollow body and a truss structure which are wrapped and fixed to expose both ends of the shear reinforcement bent so as to be self-formed so as to be exposed to the outside, are spaced apart from each other, A hollow slab module installing step of arranging the end portions of the reinforcing portions so as to overlap with each other;
A hollow body mounting step of disposing a hollow body on an end of the overlapped shear reinforcement;
And a hollow slab module joining step of injecting mortar between the unidirectional hollow slab precast modules and then curing the hollow slab modules.
The method according to claim 4 or 5,
Wherein the unidirectional hollow slab precast module is provided with a front end groove along the longitudinal direction on a circumferential surface of the concrete of the unidirectional hollow slab precast module.
The method according to claim 4 or 5,
Wherein the bottom mold is an H beam having a U-shaped cross-section whose interior is opened upward and which is provided in the vicinity of its lower portion along an inner longitudinal direction, or a bolt which is inserted between unidirectional hollow slab precast modules. Construction method of precast module.
8. The method of claim 7,
Wherein the unidirectional hollow slab precast module is provided with a front end groove along the longitudinal direction on a circumferential surface of the concrete of the unidirectional hollow slab precast module.
KR1020140120186A 2014-09-11 2014-09-11 One-way hollow slab precast modul and construction method thereof KR20160030695A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110965685A (en) * 2019-11-26 2020-04-07 上海二十冶建设有限公司 Construction method of prestressed thick plate hollow floor
WO2021157955A1 (en) * 2020-02-06 2021-08-12 서울대학교 산학협력단 Modular vibration-reduction pc slab
US12129653B2 (en) 2020-02-06 2024-10-29 Seoul National University R&Db Foundation Variable assembly PC member

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110965685A (en) * 2019-11-26 2020-04-07 上海二十冶建设有限公司 Construction method of prestressed thick plate hollow floor
WO2021157955A1 (en) * 2020-02-06 2021-08-12 서울대학교 산학협력단 Modular vibration-reduction pc slab
KR20210100376A (en) * 2020-02-06 2021-08-17 서울대학교산학협력단 Modular PC slab for vibration reduction
US12129653B2 (en) 2020-02-06 2024-10-29 Seoul National University R&Db Foundation Variable assembly PC member

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