KR101911731B1 - Tendon fixing system of long span fire resistance deck strained at deck end and construction method of the same - Google Patents

Tendon fixing system of long span fire resistance deck strained at deck end and construction method of the same Download PDF

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KR101911731B1
KR101911731B1 KR1020160063578A KR20160063578A KR101911731B1 KR 101911731 B1 KR101911731 B1 KR 101911731B1 KR 1020160063578 A KR1020160063578 A KR 1020160063578A KR 20160063578 A KR20160063578 A KR 20160063578A KR 101911731 B1 KR101911731 B1 KR 101911731B1
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South Korea
Prior art keywords
tension member
deck
deck plate
tension
joined
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KR1020160063578A
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Korean (ko)
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KR20170132947A (en
Inventor
최성모
김형준
송종욱
송경철
김도균
경제환
Original Assignee
서울시립대학교 산학협력단
(주)목양종합건축사사무소
(주)제일테크노스
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Application filed by 서울시립대학교 산학협력단, (주)목양종합건축사사무소, (주)제일테크노스 filed Critical 서울시립대학교 산학협력단
Priority to KR1020160063578A priority Critical patent/KR101911731B1/en
Priority to PCT/KR2016/005757 priority patent/WO2017204393A1/en
Publication of KR20170132947A publication Critical patent/KR20170132947A/en
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Publication of KR101911731B1 publication Critical patent/KR101911731B1/en

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    • 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
    • E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
    • 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
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B5/36—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor
    • E04B5/38—Floor structures wholly cast in situ with or without form units or reinforcements with form units as part of the floor with slab-shaped form units acting simultaneously as reinforcement; Form slabs with reinforcements extending laterally outside the element
    • 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
    • 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
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/18—Spacers of metal or substantially of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
    • E04C5/20—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups of material other than metal or with only additional metal parts, e.g. concrete or plastics spacers with metal binding wires
    • 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
    • E04B5/32—Floor structures wholly cast in situ with or without form units or reinforcements
    • E04B2005/324—Floor structures wholly cast in situ with or without form units or reinforcements with peripheral anchors or supports

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention can prevent the deck plate from being sagged in an elongated span by giving a bending displacement amount upward without damaging or damaging the deck plate, The present invention provides a tension-fixing system for a long-span refractory deck that is tension-fixed in a trench and a method of construction thereof.
The tension member fixing system of the long span refractory deck subjected to tension fixation at the deck end according to a preferred embodiment of the present invention is a tension member fixing system for controlling deflection of a deck plate main body supported by H beams opposing each other with a tension member, A support for a tension member point joined at two places for every concrete filled corrugated upward of the deck plate main body; A tail fin reinforcing angle joined to both side end side edges of the deck plate body; And a tension member fixing hole joined to the edge strengthening angle in a direction perpendicular to an arrangement direction of the deck plate main body; The opposite ends of the tension member are inserted into the respective tension member fitting grooves of the support for the tension member provided at two places by inserting the tension member fixing hole so as to tense the tension member to cause an upward bending force to be generated in the deck plate main body.

Figure R1020160063578

Description

Technical Field [0001] The present invention relates to a tension-fixing system for a long-span refractory deck which is tension-fixed at a deck end,

The present invention relates to a tension member fixing system for a long span refractory deck, and more particularly to a tension member fixing system for a long span refractory deck capable of preventing deflection at an elongated span by providing a bending displacement amount upwardly without damaging or damaging the deck plate at the deck end, The present invention relates to a tension member fixing system for a long span refractory deck which is tension-fixed at the end of a deck so that the arrangement direction can coincide with the direction of the tension force, and a construction method thereof.

A steel composite beam system is known in which a slab is placed on an upper flange of an H-shaped beam, and a shear connection (shear stud) is provided on the beam upper flange of the slab and the H-shaped beam. In this case, since the slab is spread over the H-beam, there is a problem that the height of the entire floor system including the beam is much higher than that of the reinforced concrete structure.

As an alternative to solve this problem, a slim floor method has been developed which can maximize the volume ratio within a limited height of a building. This slim floor method is a general term for a composite floor slab method in which a slab is inserted into a steel frame and is installed. Asymmetric H-beam is used to increase the sectional efficiency of the beam and make the beam dance smaller than that of the existing one. Can be greatly reduced. In addition, since the slab is inserted into the web of the steel beam, it is possible to reduce the floor height relatively, improve the integrity of the bottom plate and the beam, eliminate the fireproof coating, and reduce the exterior material due to the reduction of the floor height.

However, when the deck plate is applied to the slab, when the operator or the heavy material acts on the deck plate, the deck plate becomes large in deflection, making it difficult to realize the long span. In addition, it is necessary to separately install a trowel to prevent sagging and to install a small beam in the middle, which reduces the economical efficiency and the workability.

Korean Patent Registration No. 10-1337326 (synthetic slab refractory method using wire rope) has been proposed as a background of the present invention. The deck plate is installed between the beam and the beam. The wire rope is connected to the middle portion of the deck plate so that both end portions of the deck plate are positioned above the deck plate. The deck plate includes a plurality of deck plates arranged in parallel to the deck plate, and the deck plate has a plurality of deck plates, And an end of the deck plate is supported by the lower flange of the beam, and each end of the wire rope is fixed to the upper flange upper surface of the beam by tensioning the other end of the wire so that the prestress is introduced in a post- So that the deck play So that the load transferred from the load is transmitted to the beam via the wire rope.

However, in the background art, since the wire rope support which is in contact with the wire rope is directly connected to the deck plate, the deck plate is torn during the tension fixing, so that it is difficult to apply the tension force properly. In addition, the wire rope is bent in the direction of the fixing point, so that the direction of tension does not coincide with each other.

Korean Registered Patent No. 10-1337326 (synthetic slab refractory method using wire rope)

The present invention can prevent the deck plate from being sagged in an elongated span by giving a bending displacement amount upward without damaging or damaging the deck plate, The present invention provides a tension-fixing system for a long-span refractory deck in which the tension springs are fixed by tension, and a construction method thereof.

The tension member fixing system of the long span refractory deck subjected to tension fixation at the deck end according to a preferred embodiment of the present invention,

A tension material fixing system for controlling deflection of a deck plate body supported by H beams opposing each other with a tensile material,

A support for a tension member point joined at two places for every concrete filled corrugated upward of the deck plate main body;

A tail fin reinforcing angle joined to both side end side edges of the deck plate body;

And a tension member fixing hole joined to the edge strengthening angle in a direction perpendicular to an arrangement direction of the deck plate main body;

The opposite ends of the tension member are inserted into the respective tension member fitting grooves of the support for the tension member provided at two places by inserting the tension member fixing hole so as to tense the tension member to cause an upward bending force to be generated in the deck plate main body.

Further, the supporter for the tension member point

A vertical plate having a plurality of tongue-and-groove-fitting grooves for receiving the tension member at a lower portion thereof;

An upper joining plate positioned at an upper end of the vertical plate and joined to an upper surface of the deck plate main body;

A side joint plate positioned on both side surfaces of the vertical plate and joined to a wall surface of the concrete filled bone; And

And a lower joining plate positioned at a lower end of the vertical plate and joined to a bottom surface of the concrete filled bone.

In addition, the tension member fixing holes are provided with a cross-sectional structure in the longitudinal direction.

Further, the tension member fixing hole is characterized in that reinforcing vanes are further formed at both ends thereof.

In addition, a concrete filling hole is further formed on the upper surface of the tension member fixing hole at regular intervals.

In the meantime, a method of fixing a tension member of a long span fireproof deck to which a deck end according to the present invention is tension-

Placing the deck plate body opposite to each other in such a manner that both ends of the deck plate body are supported and fixed by bolts or welding;

A plurality of tension members are arranged so as to hang on the concrete filler cores of the deck plate body, and then a tension member point support is fixedly installed at each of the concrete filler cores;

Bonding the tension member fixing holes to both longitudinal ends of the deck plate body;

Screwing the tension member with a tightening nut so that the tension member comes into contact with the support for the tension member main body so that the upward bending force is exerted on the central portion of the deck plate main body or fixing the tension member to the tension member fixing hole side through the engagement of the wedge housing and the wedge housing ; And the construction is performed.

According to the tension member fixing system of the long span refractory deck of the present invention, the tension application direction of the tension member can be aligned with the placement direction at the tension point through the tension member fixing hole, thereby improving the tension efficiency.

In addition, the tension applied to the tension member exerts an upward force via the support for the tension member, and as a result, the center portion of the deck plate body is lifted to give an upward displacement, thereby preventing sagging in the long span.

Further, the tension member does not directly apply an upward force to the deck plate main body but mediates a support for a tension member point so that the deck plate main body can be installed without being torn or broken.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description, serve to explain the principles of the invention, Shall not be construed as limiting.
1 is a perspective view of a deck plate with a taut fixation system according to an embodiment of the invention;
2 is a plan view of Fig.
Fig. 3 is a front view and a main part enlarged view of Fig. 1;
4 is a perspective view and a partial enlarged view of the deck plate main body in a state in which a part of the deck plate main body is removed in Fig.
5 is an enlarged sectional view taken along the line AA of Fig.
Figure 6 is a perspective view of a support for a tension member point applied to Figure 1;
Figure 7 is a modified perspective view of the tensioner fixture applied to Figure 1;
Figure 8 is an illustration of another set of tensions applied to the present invention.
FIG. 9 is a view showing a construction procedure of a deck plate on which a tensional fixing system according to the present invention is mounted; FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto.

The present invention provides a tension member fixing system for controlling deflection of a deck plate body 10 supported by H beams 5 and 5 opposed to each other as shown in FIG. 9 with a tension member 40. The tensile material 40 may be a steel wire, a strand, a steel rod, or the like.

As shown in FIGS. 1 to 5, at least one support 20a for a tension member point is installed in the concrete filling trough 12, which is opened upwardly of the deck plate body 10. The concrete filler ball 12 has a cross-sectional structure of a vertical cross-section in the present embodiment, but the present invention is not limited to such a multi-facet structure or form.

In this embodiment, two support members 20a for a tension member point are provided for each one concrete filling trough 12. [ At this time, the two supporters 20a for the tension members are positioned symmetrically with respect to the center of the concrete filling trough 12 and are installed in the central section thereof. This is because the tensile member 40 exerts an upward supporting force at two places for each concrete filling trough 12. [

The support 20a for a tension member point includes a vertical plate 201 having a plurality of tension member insertion grooves 201a in which a tension member 40 is fitted in a lower portion as shown in Figs. 5 and 6, An upper joining plate 202 joined to the upper surface of the deck plate body 10 and a side joining plate 203 positioned on both sides of the vertical plate 201 and joined to the wall surface of the concrete fillet 12, And a lower joining plate 204 which is positioned at the lower end of the concrete filling groove 201 and joined to the bottom surface of the concrete filling bone 12. [

The tension member insertion groove 201a is formed in the shape of a semicircular groove, a triangular groove or a square groove so that the tension member 40 can not be easily detached from the vertical plate 201 when the tension member 40 supports the point support 20a desirable.

On the both side end side edges of the deck plate body (10), a crowning reinforcing angle (50) is welded to each other. The crowbar reinforcing angle 50 is made of a steel material and has a cross-sectional structure in the longitudinal direction. The edge strengthening angle 50 reinforces the edges of the edge plate 11 of the deck plate body 10 when the tension member 40 exerts a tension force to prevent deformation thereof.

And a tension member fixing hole 160 is provided in contact with the crowbar reinforcing angle 50. The tension member fixing holes 160 are disposed in a direction perpendicular to the direction in which the deck plate body 10 is disposed and joined to the swash plate reinforcing angle 50.

When the tension member fixing holes 160 have a cross-sectional shape in the longitudinal direction, concrete filling holes 161 may be formed at regular intervals on the upper surface as shown in FIG. The concrete filling hole 161 is for facilitating the filling of the concrete placed at the time of installation of the long span refractory deck into a space formed between the tension member fixing port 160 and the whorl plate 11. [ On the other hand, the tension member fixing hole 160 may be formed by joining the reinforcing vanes 162 at both ends.

On the other hand, in the tension member fixing system of the long span refractory deck, both ends of the tension member 40 are inserted into the tension member fitting grooves 201a and 201a of the support members 20a and 20a provided at two places, The tension member 40 may be screwed to the end of the tension member fixing hole 160 through the engagement of the wedge 34 and the wedge housing 33 as shown in Fig. Can be fixed.

An example of a construction method of a long span refractory deck plate to which a tension member fixing system of a long span refractory deck plate subjected to tension fixation at the deck end thus configured is applied will be described.

Deck plate  Body installation

9 (B), the both ends of the deck plate body 10 are fixed to the steel column (not shown) by H And is supported by the shape beam 5. At this time, both end portions of the deck plate body 10 are stacked on the upper surface of the lower flange of the H-shaped beam 5 to be staggered. Thereafter, the deck plate body 10 is fixed to the H-shaped beam 5 through bolts or welding.

At this time, the deck plate body 10 is provided with a swash plate 11 to prepare for concrete pouring at both ends.

Tension  And Tension  For branch office support  arrangement

Thereafter, the arrangement of the tension members 40 and the support 20a for the tension members are carried out.

That is, two tensile members 40 are arranged for each of the concrete filling troughs 12 so as to hang on the concrete filling troughs 12 of the deck plate body 10 as shown in Figs. 2 to 4, And a support 20a for a tension member point is fixedly installed at two places for each filling trough 12. [

Tension  Fusing unit installation

Then, as shown in Fig. 4, the tension member fixing holes 160 are joined to the both end portions of the deck plate body 10 in the longitudinal direction thereof.

At this time, both ends of the tension member 40 are inserted through the tension member fixing hole 160 and exposed to the outside.

Tension  Tension settlement

Then, tightening nuts 70 are screwed to both ends of the tensile member 40 as shown in Fig. At this time, the tightening nut (70) is rotated and tightened while being supported by the tension member fixing hole (160). Therefore, the tension member 40 comes into contact with the supporter 20a for tension member, and the upward supporting force is exerted.

Of course, at this stage both ends of the tension member 40 may be tensioned through engagement of the wedge 34 and the wedge housing 33 as shown in FIG. That is, the tension member 40 may be tensioned using a hydraulic jack (not shown), and then the wedge 34 may be fixedly fixed to the wedge housing 33.

As a result, the deck plate body 10 is formed with a constant camber angle at both ends thereof and has a certain amount of displacement rising upward from the center. At this time, the amount of displacement may be about ℓ / 200 to ℓ / 250 with respect to the length (ℓ) of the deck plate body 10.

The load to be received by the deck plate body 10 after the completion of the slab installation is transmitted to the tension member 40 through the support 20a for the tension member point and the force transmitted to the tension member 40 is transmitted to the beam 5 So that a deflection-preventing mechanism is provided.

Concrete slab construction

Then, the concrete 200 is laid on the upper surface of the deck plate body 10 as shown in FIG. 9 (C). At this time, the height of the poured upper surface of the concrete is higher than the height of the upper surface of the deck plate body 10. Therefore, the poured concrete is cured by putting the tension member 40 and the tension member fixing unit 30 into a concrete slab.

The load of the slab to which the concrete is applied is not generated when the deck plate body 10 is deflected due to the upward force of the tensile support 20a due to the tensile force of the applied tensile material 40. [

Further, the bending displacement amount can be applied upward without the breakage or damage of the deck plate by the support 20a for the tension member point, and the deformation of the end portion of the deck plate body 10 can be prevented by the brace reinforcing angle 50 have.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the above teachings. will be. The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

20a: Support for tension points
201: Vertical plates
202: upper joining plate
203: side joint plate
204: lower joining plate
50: Angle reinforcement angle
160: Tension Adjuster
161: Concrete filling hole
162: reinforcing wing

Claims (6)

A tension material fixing system for controlling deflection of a deck plate body (10) supported by H beams (5, 5) opposed to each other with a tensile member (40)
A vertical plate 201 having a plurality of tensile material fitting grooves 201a in which a tension member 40 is inserted at a lower portion of the deck plate body 10, A side joint plate 203 positioned on both sides of the vertical plate 201 and joined to a wall surface of the concrete filling trough 12 and a concrete fill trough 12 positioned at a lower end of the vertical plate 201, And a lower joint plate 204 joined to the bottom surface of the deck plate main body 10. The tensile point support 20a is joined at two places to each concrete filler bone 12 that is opened upward of the deck plate body 10;
A tail fin reinforcing angle (50) joined to both lateral side edges of the deck plate body (10);
And a tension member fixing hole 160 joined to the edge strengthening angle 50 in a direction perpendicular to the arrangement direction of the deck plate main body 10;
The tension members 40 are inserted into both ends of the tension member 40 so as to insert the fixing members 160 into the tension member insertion grooves 201a and 201a of the supports 20a and 20a provided at two places, So that an upward bending force is generated in the deck plate body (10). The tension member fixing system of the long span refractory deck in which the deck plate body is tension-fixed at the deck end. delete The method according to claim 1,
Wherein the tension member fixing port 160 is installed in a longitudinal direction with a cross-sectional structure, and the tension member fixing member is tension-fixed at the end of the deck. The method of claim 3,
Wherein the tension member fixing hole (160) is further formed with reinforcing vanes (162) at both ends thereof. The method of claim 3,
Wherein the tension member fixing hole 160 is further formed with a concrete filling hole 161 at a predetermined interval on the upper surface thereof. Placing the deck plate body (10) so that both ends of the deck plate body (10) are supported on the H-shaped steel beams (5) opposed to each other, and then fixing them by bolts or welding;
A plurality of tensile members 40 are arranged on the concrete filler ribs 12 of the deck plate body 10 so as to be slackened and then a support 20a for a tensile member is fixedly installed at each of the concrete filler ribs 12 ;
A plurality of tension member fixing holes 160 are formed on both sides of the deck plate body 10 in the longitudinal direction thereof;
The tension member 40 is brought into contact with the support 20a for the tension member to screw the tension member 40 with the tightening nut 70 so that the upward bending force is exerted on the central portion of the deck plate body 10, 40 on the side of the tension member fixture 160 through the engagement of the wedge 34 and the wedge housing 33,
The supporter 20a for a tension member includes a vertical plate 201 having a plurality of tension member insertion grooves 201a in which a tension member 40 is inserted at a lower portion thereof and a vertical plate 201a located at an upper end of the vertical plate 201, An upper joining plate 202 joined to the upper surface of the vertical plate 201 and a side joining plate 203 joined to a wall surface of the concrete filling gravel 12 at both sides of the vertical plate 201, And a lower joining plate (204) joining to the bottom surface of the concrete filling trough (12). The method of claim 1, wherein the lower joining plate (204)
KR1020160063578A 2016-05-24 2016-05-24 Tendon fixing system of long span fire resistance deck strained at deck end and construction method of the same KR101911731B1 (en)

Priority Applications (2)

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KR1020160063578A KR101911731B1 (en) 2016-05-24 2016-05-24 Tendon fixing system of long span fire resistance deck strained at deck end and construction method of the same
PCT/KR2016/005757 WO2017204393A1 (en) 2016-05-24 2016-05-31 Tendon fixing system of long-span fire-resistant deck tensioned and fixed on end of deck, and method for constructing same

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