KR101677668B1 - Formed steel beam having bolt connection with lattice reinforcement and composite beam using the same - Google Patents

Formed steel beam having bolt connection with lattice reinforcement and composite beam using the same Download PDF

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Publication number
KR101677668B1
KR101677668B1 KR1020150065558A KR20150065558A KR101677668B1 KR 101677668 B1 KR101677668 B1 KR 101677668B1 KR 1020150065558 A KR1020150065558 A KR 1020150065558A KR 20150065558 A KR20150065558 A KR 20150065558A KR 101677668 B1 KR101677668 B1 KR 101677668B1
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South Korea
Prior art keywords
plate
lattice
truss
bolt
steel
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KR1020150065558A
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Korean (ko)
Inventor
유중모
염경수
김영호
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(주)엔아이스틸
주식회사 액트파트너
(주)엔테이지
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Priority to KR1020150065558A priority Critical patent/KR101677668B1/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/30—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts being composed of two or more materials; Composite steel and concrete constructions
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/293—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being steel and concrete
    • 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

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The present invention relates to a steel beam for forming a steel-concrete composite beam formed by using a steel sheet as a permanent mold on a cross sectional outer skin and filled with concrete inside and to the composite beam using the same and, more specifically, to a steel beam effective to a construction load due to a tension effect and a compression effect of a lattice member and wherein a lattice reinforcing material functioning as a structural member after completing the construction and to the composite beam using the same. A steel beam bolt-assembled with a lattice reinforcing material according to a proper embodiment of the present invention includes: a pair of truss reinforcing materials composed of an upper chord, a lattice material, and a lower chord formed of a vertical plate wherein bolt holes are formed at constant intervals and separated at a predetermined interval; a bent steel sheet unit formed into a U-shaped cross section with open top, including a lower plate, both vertical plates extended upward in a vertical direction from both ends of the lower plate, having bolt holes at intervals corresponding to the bolt holes formed in the vertical plate of the lower chord of the truss reinforcing material, bolt-coupled to the vertical plate of the lower chord, and an upper plate horizontally extended from upper parts of the vertical plates in a direction different from the lower plate; and a limiting member horizontally connecting the upper chords of the pair of the truss reinforcing materials and transversely limiting the upper parts of the truss reinforcing materials.

Description

[0001] The present invention relates to a lattice reinforcement bolt assembled steel beam and a composite beam using the same,

The present invention relates to a steel beam for constituting a steel concrete composite beam constituted by a permanent mold on a cross-section outer shell of a steel plate and filled with concrete in a cross section, and more particularly to a composite beam using the same, The present invention relates to a steel beam provided with a lattice reinforcement that is effective for a load and serves as a structural member after completion, and a composite beam using the same.

Steel Concrete Composite steel beam and concrete are made to behave as a single member, so that when the bending moment is applied, most of the compressive stress is made to be borne by the concrete and tensile stress is made to be imposed by the steel material. It is possible to reduce the stratification of the beam span and to increase the resistance strength and resistance stiffness of the beam section, thereby enabling the long span structure and increasing the extreme performance and deformation performance. Steel Concrete Composite has been developed for a long time, one of which is a steel plate permanent composite composite beam in which the section of steel is concentrated on the tensile side of the structural member and the concrete is filled in.

This is because the concrete is restrained by the steel plate, the flexural rigidity is increased, and the concrete is not exposed. Therefore, it is advantageous to prevent the crack and neutralization and to improve the durability. In addition, since the concrete of the composite beam and the slab is cured by being poured integrally, it is an economical and environmentally friendly method because structural integrity is secured and no separate formwork is used.

As a background of the present invention, there is a patent registration No. 10-1372643, 'No-form composite beam and its manufacturing method' (Patent Document 1).

This patent is made up of a cast steel plate lower flange forming a lower face, a cast steel plate web formed perpendicularly to both ends of a cast steel plate lower flange, and a cast steel plate upper flange formed at the upper end of the cast steel plate web, A U-shaped molded steel plate formed by molding a steel plate of a thin plate instead of a die; A portion of both ends of the molded steel plate is welded to the molded steel plate and welded to the molded steel plate so that the portion not buried in the molded steel plate is exposed in the molded steel plate so that it can be engaged with the steel column, An H-section to resist the composite section with the concrete; In order to minimize the cross-section of the steel plate and to eliminate the reinforcement in the field, the composite section is formed with the steel plate, the H-section steel, the concrete or the steel plate and the concrete, A stud bolt made of a stud bolt for an H-shaped weld and a stud bolt for a formed steel plate welded at a predetermined interval to the center of a lower flange of the formed steel plate; We propose a concrete composite structure consisting of concrete to be filled to fill the inside of a steel plate with a part of stud bolt and H - section.

According to the composite view proposed by this patent, the end portion where the maximum moment is applied depends on the stress distribution of the H-shaped section and the concrete is resistant to the cross section, and the mid section of the end section where the end moment acts is U- And concrete is designed to resist cross-section. This method is economical because it can reduce the amount of steel products with high raw material prices. However, the U-shaped steel plate is deformed excessively due to the application step load such as work load, And the thickness and the thickness of the formed steel sheet increase in response to the external force problem, the economical efficiency and the material efficiency are lowered.

Patent No. 10-1372643 'No-shape composite beam and its manufacturing method'

The present invention provides a steel beam having a lattice reinforcing material and a composite beam using the steel beam so as to overcome the instability of the open cross section at the time of construction while maintaining an open cross section for filling the concrete. The purpose.

And more particularly, to a steel beam which is bolted to a lattice reinforcement to improve workability and a composite beam using the same.

It is another object of the present invention to provide a steel beam capable of forming a more efficient sectional configuration by preventing local buckling of a steel beam formed by forming a thin plate and increasing torsional rigidity and a composite beam using the steel beam.

The lattice reinforcement bolt assembled steel according to a preferred embodiment of the present invention is composed of a vertical plate in which bolt holes are perforated at regular intervals and is composed of a lattice material and a bottom material at present, A pair of truss reinforcement; A U-shaped cross section having an upper portion opened and including an upper plate extending horizontally in a direction different from the lower plate at the upper end of the vertical plate, and a truss stiffener A bending steel plate unit in which bolt holes are formed at intervals corresponding to the bolt holes formed in the vertical plate at the time of lowering and the vertical plates are bolted to the vertical plates at the time of lowering; And a restricting member for horizontally connecting the currents on the pair of truss reinforcements to transversely support the upper end of the truss reinforcement.

At this time, the lattice material of the truss reinforcement may be formed by bending the reinforcing bars according to the shape of the truss model.

On the other hand, the restricting member can be constituted by continuously arranging bending materials bent in a reinforcing bar.

And a lattice support plate that is formed of a plate-like bolt hole and is bolted together with the brittle steel plate unit at a predetermined interval in the longitudinal direction under the truss reinforcement member and projected toward the center of the lattice material height direction So that buckling of the lattice material can be prevented.

A vertical stiffening plate extending vertically at one end of the stiffening plate and being perforated with a bolt hole, and a horizontal stiffening plate extending horizontally in a direction different from the stiffening stiffening plate at the extending end of the vertical stiffening plate, Wherein the stiffening plate is attached to the upper surface of the upper plate of the bending steel plate unit, the vertical stiffening plate is bolted together with the truss reinforcement and the bending steel plate unit at the inner side of the end surface, and the horizontal reinforcing plate is padded on the upper surface of the upper plate of the bending steel plate unit And the sectional rigidity of the bending steel plate unit can be increased.

The bending steel plate unit may further include a lid member which is composed of a cover plate horizontally configured and a leg plate vertically extending downward from both ends of the cover plate so that an extended end of the leg plate is coupled to an upper end of the end face reinforcing member, Can be closed with cotton.

The composite using the lattice reinforcement bolt-assembled steel beam according to another preferred embodiment of the present invention can be seen from the lattice reinforcement bolt-assembled steel beam; Lattice reinforcement bolt assembled steel plate A bottom plate on which both ends are mounted on an upper plate of a bending steel plate unit; And concrete placed in the bending steel plate unit and in the upper part of the bottom plate.

The lattice reinforcement bolt-assembled steel beam according to the present invention and the composite using the lattice reinforcement bolt-assembled steel beam according to the present invention are effectively combined with the upper part of the bending steel plate unit to effectively resist the installation load by tension and compression action of the lattice member. Can be solved.

In addition, by reinforcing steel and steel plate properly, it is possible to reduce the amount of steel and maximize the sectional performance, thereby securing economical efficiency by reducing the amount of steel in the construction of composite beams. There is an effect that can be.

In addition, since the lattice reinforcement is joined to the bending steel plate unit by bolting, the workability is improved and the entire structure is completed. Therefore, the synthesis with the concrete can be effectively performed, the installation of the shear connection member can be omitted, There is an effect that it can be easily carried out.

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 lattice reinforcement bolt-assembled steel beam according to an embodiment of the present invention, and Fig. 2 is a sectional view.
3 is a cross-sectional view showing various embodiments of a truss reinforcement according to the present invention.
4 is a cross-sectional view showing various embodiments of the bending steel plate unit according to the present invention.
5 is a sectional view of a lattice stiffener bolt-assembled steel beam according to another embodiment of the present invention.
6 is a perspective view of a lattice reinforcement bolt assembled steel beam according to another embodiment of the present invention.
FIG. 7A is a perspective view of a lattice reinforcement bolt-assembled steel beam according to another embodiment of the present invention, and FIG. 7B is a sectional view.
8A is a perspective view of a lattice stiffener bolt-assembled steel beam according to another embodiment of the present invention, and Fig. 8B is a sectional view.
9A is a perspective view of a lattice reinforcement bolt-assembled steel beam according to another embodiment of the present invention, and Fig. 9B is a sectional view.
10 is a cross-sectional view of a composite beam using a lattice reinforcement bolt-assembled steel beam according to the present invention.

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.

1 is a perspective view of a lattice reinforcement bolt-assembled steel beam according to an embodiment of the present invention, and Fig. 2 is a sectional view.

The lattice reinforcement bolt assembled steel material according to the present invention includes a pair of truss reinforcement members 10 and 10, each of which is composed of a lattice member 12, a lattice member 12, and a bottom member 13 and spaced apart from each other by a predetermined distance. A bending steel plate unit 20 formed with a U-shaped cross section with an open upper portion and an upper end joined to the lower end 13 of the truss reinforcement 10; And a restraining member (30) connecting the current (11) on the pair of truss reinforcing members (10, 10) to transverse the upper end of the truss reinforcement member.

As shown in the figure, the phase current 11 and the bottom current 13 of the truss stiffener 10 may be formed using angles, and the lattice material 12 may be manufactured by bending the reinforcing bars.

The bent portion of the lattice material 12 of the truss reinforcing member 10 can be formed into various shapes. For example, the web portion of the reinforced concrete beam generating the sinusoidal heat is divided into a diagonal The truss model can be folded according to the 30 ~ 60 ° truss model, which is idealized as a compression member to resist the shear force, or it can be manufactured in various shapes such as a trapezoidal or rectangular shape along with a strut-tie model or other truss model This is possible.

The lower end of the truss reinforcing member 10 is coupled to the bending steel plate unit 20 and the upper end of the truss reinforcing member 10 is coupled to a restraining member 30 described later.

The truss stiffener 10 is coupled to the upper portion of the bending steel plate unit 20 and effectively resists the installation load by means of tension and compression of the truss member as means for solving instability during the operation of the bending steel plate unit 20 having an open end face. After completion, it is embedded in the slab concrete to synthesize the composite beam and the slab, and functions as a shear connection material between the slab concrete and the composite beam.

The restraint member (30) is a resistance element that restrains the upper end of the truss reinforcement to prevent transverse buckling and lateral twist of the truss reinforcement. The restraint member 30 may be formed by continuously bending folded bands similar to the lattice material 12 as shown in the drawing, but the present invention is not limited thereto, and the bent rope 30 may be formed of a wire rod such as a filled pipe, angle, channel, Steel beams can be installed at regular intervals along the longitudinal direction.

3 is a cross-sectional view showing various embodiments of a truss reinforcement according to the present invention.

The upper portion 11 of the truss stiffener 10 according to the present invention may be formed of an angle member as described above. In addition, as shown in Fig. The phase current 11 is the outermost member of the neutral axis and is a compression resistance element for bending moments.

The lower end 13 of the truss reinforcement 10 according to the present invention is constituted by the horizontal plate 132 extending horizontally from one end of the angle plate 131 or the vertical plate 131 as described above At this time, the vertical plate 131 provides a coupling surface with the bending steel plate unit 20, and the horizontal plate 132 provides a hanging surface of the bottom plate for slab formation. 1 and 2, the truss reinforcement 10 is bolted to the bending steel plate unit 20, and the truss reinforcement 10 is connected to the vertical plate 131 of the truss reinforcement 10 Bolt holes should be drilled to allow the bolts to penetrate. The lower end 13 of the truss reinforcement 10 according to the present invention is not limited to the angle member but may be selected from a range capable of providing a coupling surface with the bending steel plate unit 20, The horizontal plate 132 may be omitted.

4 is a cross-sectional view showing various embodiments of the bending steel plate unit according to the present invention.

4A, the bending steel plate unit is composed of a lower plate 21, a pair of vertical plates 22 vertically extending upward at both ends of the lower plate 21, 22 extending horizontally in a direction different from that of the lower plate 21.

The lower plate 21 and the vertical plate 22 serve as dies for concrete pouring, which will be described later, and the upper plate 23 is a means for mounting a floor plate described later when the slab is formed.

The vertical plate 22 is formed as a sidewall of the bending steel plate unit 20. The vertical plate 22 can be formed in various heights and the upper end is bolted to the truss reinforcing member 10 and a bolt hole is drilled to allow the bolt to pass therethrough.

The present invention is not limited to the bending steel plate unit 20 being constituted by a single member but may be constituted by a plurality of members as shown in Figs. 4B and 4C within a range providing a U-shaped open cross section. A vertical plate 22 vertically extending upward from one end of the lower plate 21a; an upper plate 23 extending horizontally in a direction different from the lower plate 21a at the upper end of the vertical plate 22; As shown in FIG. 4B, the lower end of the lower plate 21a is coupled with the lower end of the lower plate 21a through the connecting plate 211, or the lower plate 21a is directly connected .

5 is a sectional view of a lattice stiffener bolt-assembled steel beam according to another embodiment of the present invention.

In this embodiment, the upper plate 23 of the bending steel plate unit 20 is omitted. In this case, the horizontal plate 132 of the truss stiffener 10 is formed to have a sufficient width, .

1 to 3, the lattice material 12 is bonded to the outside of the end face of the phase current 11. In this embodiment, however, 11).

Although not shown, the restraint member 30 may also be coupled to the lower surface of the phase current 11 to laterally constrain the upper end of the truss reinforcement 10 to prevent lateral buckling and lateral warpage of the truss reinforcement.

6 is a perspective view of a lattice reinforcement bolt assembled steel beam according to another embodiment of the present invention.

In the present embodiment, when the shear force acts largely on the end portion, the truss reinforcing member 10 is replaced with the steel plate 40 without the lattice member 12 being omitted. The restraining member 30 can be replaced with the steel plate 40 so as to have a continuous cross section in order to improve the resistance of the end bending moment. The steel plate 40 is provided with a filling groove 41 It should be perforated.

FIG. 7A is a perspective view of a lattice reinforcement bolt-assembled steel beam according to another embodiment of the present invention, and FIG. 7B is a sectional view.

The plate-shaped lattice support plate 60 is formed at the bolt-joining position of the truss reinforcement 10 and the bending steel plate unit 20 at a predetermined interval in the longitudinal direction of the truss reinforcement 10 and the bending steel plate unit 20, Lt; / RTI > The lattice support plate 60 is configured to protrude from the bending steel plate unit 20 toward the center of the lattice material 12 in the height direction of the truss reinforcement 10 and is a means for preventing buckling of the lattice material 12. [ 2 and 7b, the buckling length of the lattice material 12 in the previous embodiment in which the lattice support plate 60 is not provided is l 1 , whereas in this embodiment, the lattice support plate 60 is installed, The buckling length of the ash 12 is reduced to l 2 . The lattice support plate 60 has an effect of preventing local buckling of the lattice material 12 constituted by the wire rod under a construction load such as an operator stepping on the upper end of the steel beam in the construction step.

8A is a perspective view of a lattice stiffener bolt-assembled steel beam according to another embodiment of the present invention, and Fig. 8B is a sectional view.

The cross-section reinforcing member 70 is provided at the bolt-connecting position of the truss reinforcement 10 and the bending steel plate unit 20 at a predetermined interval in the longitudinal direction between the truss reinforcement 10 and the bending steel plate unit 20 Respectively. The cross-section reinforcing member 70 is configured to partially increase the cross-sectional area of the bending steel plate unit 20 and is means for increasing the section rigidity of the bending steel plate unit 20. [ The cross-section reinforcing member 70 in the present embodiment is horizontally formed and is provided with a stiffening plate 71 attached to the upper surface of the upper plate 23 of the bending steel plate unit 20, The vertical reinforcing plate 72 and the vertical reinforcing plate 72, which are bolted together with the truss reinforcing member 10 and the bending steel plate unit 20 at the inner side of the cross section, And a horizontal reinforcing plate 73 which is extended to be padded on the upper surface of the upper plate 23 of the bending steel plate unit 20. As shown in FIG. 8B, the cross-sectional area of the bending steel plate unit 20 is increased by the provision of the cross-section reinforcing member 70, which increases the section rigidity. Since the sectional strength is partially increased in the longitudinal direction due to the cross-section reinforcing member 70, the bending steel plate unit 20 can be formed as a thin plate as the width-to-thickness ratio is reduced and the local buckling is prevented, There is an effect that can be.

9A is a perspective view of a lattice reinforcement bolt-assembled steel beam according to another embodiment of the present invention, and Fig. 9B is a sectional view.

In the previous embodiment in which the cross-section reinforcing member 70 is installed, the bending steel plate unit 20 can be formed as a thin plate as the cross-sectional reinforcing member 70 partially increases the section rigidity in the longitudinal direction. ) Is composed of a thin plate, it may be necessary to reinforce the torsion problem. In this embodiment, a lid member 80 is further provided on the upper surface of the cross-section reinforcing member 70. The lid member 80 may be composed of a horizontal lid plate 81 and a leg plate 82 extending vertically downward from both ends of the lid plate 81. The lid member 80 may be formed by a step- Is coupled to the top of the member (70). This is designed so that the bending steel plate unit 20 is partially closed to free from the twisting problem.

10 is a cross-sectional view of a composite beam using a lattice reinforcement bolt-assembled steel beam according to the present invention.

The lattice reinforcement bolt-assembled steel beam 1 according to the present invention constructed as described above is provided with a bottom plate 51 and a concrete 50 is installed in the inside of the steel beam and at the top of the bottom plate 51. Various types of members such as Deep Deck, Double T-Deck, and Half Slab as well as a conventional deck plate can be applied to the bottom plate 51. In particular, if the vertical plate 22, which is a sidewall of the bending steel plate unit 20, is constructed of a steel beam manufactured with low durability, a deck deck and a double T-deck can be adopted as the bottom plate 51 to realize a slim floor. According to the structural design, as shown in Fig. 10, a composite beam reinforcing steel rod R1 may be disposed in a cross section of the bending steel plate unit 20 and a slab reinforcing steel rod R2 may be placed at a slab forming position.

As described above, according to the present invention, since the lattice reinforcement is coupled to the upper part of the bending steel plate unit and effectively resists the work load by the tension and compression action of the lattice member, instability during the construction of the bending steel plate unit with open cross section can be solved.

In addition, by reinforcing steel and steel plate properly, it is possible to reduce the amount of steel and maximize the sectional performance, thereby securing economical efficiency by reducing the amount of steel in the construction of composite beams. .

In addition, since the lattice reinforcement is joined to the bending steel plate unit by bolting, the workability is improved and the whole structure is completed. Therefore, the synthesis with the concrete can be effectively performed, the installation of the shear connection member can be omitted, Can be easily carried out.

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.

10: Truss stiffener 11: Phase current
12: Lattice ashes 13: Lower current
131: vertical plate 132: horizontal plate
20: Bending steel plate unit 21: Lower plate
22: vertical plate 23: upper plate
211: connecting plate 30: restraint member
40: steel plate 41: filling groove
50: concrete 51: bottom plate
60: lattice support plate 70: cross-section reinforcing member
71: Staggered stiffening plate 72: Vertical stiffening plate
73: horizontal stiffening plate 80: lid member
81: cover plate 82: leg plate

Claims (7)

The bottom plate 13 is constituted by a vertical plate 131 in which bolt holes are perforated at regular intervals and spaced apart from each other at regular intervals A pair of truss reinforcement members 10, 10;
Side plates 22 extending vertically upward from both ends of the lower plate 21 and the upper plate 23 extending horizontally in the other direction from the upper end of the vertical plate 22 And a bolt hole is formed in the vertical plate 22 at intervals corresponding to the bolt holes formed in the vertical plate 131 of the truss stiffener bottom 13, 22) is bolted to the vertical plate (131) of the lower plate (13); And
A restraining member (30) horizontally connecting the current (11) on a pair of truss reinforcement members (10, 10) to support the upper end of the truss reinforcement member; / RTI >
And is bolted together with the lower plate 13 of the truss reinforcing member 10 and the bending steel plate unit 20 at regular intervals in the longitudinal direction of the lower plate 13 of the truss reinforcing member 10 to form a lattice material 12. The lattice reinforcement bolt assembled steel beam according to claim 1, further comprising a lattice support plate (60) configured to protrude toward a center portion in a height direction, thereby preventing buckling of the lattice material (12). The method according to claim 1,
The lattice material (12) of the truss reinforcement (10)
And the reinforcing bars are bent according to the shape of the truss model. The method according to claim 1,
The restricting member (30)
A batt reinforced steel beam with a lattice reinforcement formed by bending reinforcing bars continuously. delete The method according to claim 1,
A vertically reinforcing plate 72 extending vertically from one end of the stitching stiffening plate 71 and being perforated with a bolt hole and a stiffening plate 72 extending from the extending end of the vertical stiffening plate 72 And a horizontal reinforcing plate 73 horizontally extending in a direction different from the horizontal reinforcing plate 71,
The stiffening plate 71 is attached to the upper surface of the upper plate 23 of the bending steel plate unit 20 and the vertical stiffening plate 72 is fastened together with the truss stiffener 10 and the bending steel plate unit 20, And the horizontal reinforcing plate 73 is further provided with a cross sectional reinforcing member 70 padded on the upper surface of the lower plate 21 of the bending steel plate unit 20 to increase the section rigidity of the bending steel plate unit 20. [ Features of Lattice Stiffener Bolt Assembly Steel Beam. 6. The method of claim 5,
And a leg plate 82 extending vertically downward from both ends of the cover plate 81 so that an extended end of the leg plate 82 is coupled to the upper end of the end face reinforcing member 70 And a lid member (80) to partially close the bending steel plate unit (20). A lattice stiffener bolt-assembled steel beam (1) according to claim 1;
Lattice reinforcement bolt-assembled steel beam (1) A bottom plate (51) having both ends thereof fixed to an upper plate (23) of a bending steel plate unit (20); And
And a concrete (50) placed inside the bending steel plate unit (20) and on the bottom plate (51). The composite beam using the lattice reinforcement bolt assembled steel beam.
KR1020150065558A 2015-05-11 2015-05-11 Formed steel beam having bolt connection with lattice reinforcement and composite beam using the same KR101677668B1 (en)

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KR20190012766A (en) * 2017-07-28 2019-02-11 국무성 Built-Up Beam
KR102056310B1 (en) * 2018-11-02 2019-12-16 목포대학교 산학협력단 Trussed Hybrid Beam Consisted Using Compressive Member and Shear Bearing Plates
KR102056313B1 (en) * 2018-11-02 2019-12-16 목포대학교 산학협력단 Hybrid Beam Consisted Using Compressive Member and Lattice
KR20210048931A (en) * 2019-10-24 2021-05-04 (주)엔테이지 Floor Construction Method Using Hybrid Beam
KR20210072589A (en) * 2019-12-09 2021-06-17 목포대학교산학협력단 Truss hybrid beam with wide Precast concrete lower flange

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* Cited by examiner, † Cited by third party
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KR20190012766A (en) * 2017-07-28 2019-02-11 국무성 Built-Up Beam
KR102027813B1 (en) * 2017-07-28 2019-10-07 국무성 Built-Up Beam
KR102056310B1 (en) * 2018-11-02 2019-12-16 목포대학교 산학협력단 Trussed Hybrid Beam Consisted Using Compressive Member and Shear Bearing Plates
KR102056313B1 (en) * 2018-11-02 2019-12-16 목포대학교 산학협력단 Hybrid Beam Consisted Using Compressive Member and Lattice
KR20210048931A (en) * 2019-10-24 2021-05-04 (주)엔테이지 Floor Construction Method Using Hybrid Beam
KR102270860B1 (en) * 2019-10-24 2021-06-29 (주)엔테이지 Floor Construction Method Using Hybrid Beam
KR20210072589A (en) * 2019-12-09 2021-06-17 목포대학교산학협력단 Truss hybrid beam with wide Precast concrete lower flange
KR102278450B1 (en) * 2019-12-09 2021-07-19 목포대학교 산학협력단 Truss hybrid beam with wide Precast concrete lower flange

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