KR102027813B1 - Built-Up Beam - Google Patents

Abstract

The present invention relates to a top U-shaped lattice composite beam, more specifically, a U-shaped upper flange formed on the upper portion and a U-shaped lower flange formed on the lower portion and a lattice material connecting the upper portion for the central moment generated at the construction stage. It is related to the top U type lattice composite beam that can increase the buckling strength of the compressive force of the elements and to cast concrete at the same time when the slab is installed.
One preferred embodiment of the present invention comprises an upper flange having a u-type or n-type cross section consisting of a horizontal plate and a side plate extending up or down at both ends in the width direction of the horizontal plate; A lower plate formed of a horizontal plate, a side plate extending upward at both ends of the horizontal plate, and a mounting plate extending inward or outward at the upper end of the side plate, spaced apart from the upper flange by a predetermined distance. With flanges; And a connecting shear member coupled to connect the upper flange and the lower flange.

Description

Top U Lattice Composite Beam {Built-Up Beam}

The present invention relates to a top U-shaped lattice composite beam, more specifically, a U-shaped upper flange formed on the upper portion and a U-shaped lower flange formed on the lower portion and a lattice material connecting the upper portion for the central moment generated at the construction stage. It is related to the top U type lattice composite beam that can increase the buckling strength of the compressive force of the elements and to cast concrete at the same time when the slab is installed.

Beams are structural members that support loads due to bending and shear, and are often called flexural materials because the bending moment dominates structural behavior. The stresses and deformations caused by bending and shear are mainly caused, but they may be tortured if the working load does not coincide with the shear center of the cross section. Therefore, the beam must have sufficient flexural strength and shear strength (or torsional strength), and because it is used as a horizontal member, usability against deflection should be ensured.

H-shaped cross-section is mainly used as the cross section of beam member, especially steel beam member, and box-shaped, I-type and c-shaped cross-section are also used, and a built-up beam made by joining is used, and twisting If the buckling length is very long or the buckling length is used, a box section may be used. In particular, the steel beam member generally supports the bottom plate on the cross section of the upper element, so that the height of the bottom plate (thickness) and the steel beam member is high. Due to the exposed structure that must be secured, it is difficult to reduce the floor height.

In addition, the existing beam member has a problem that the cross section becomes large or the amount of steel used increases in order to increase the buckling strength of the compressive force of the upper element corresponding to the static moment of the central portion generated at the construction stage. There was a problem that the torsion resistance performance was lowered because the compression section of the upper element was small for horizontal force or asymmetrical load as well as vertical load during construction.

As a background technology of the present invention, Korean Patent Registration No. 0626542 "Steel beam forming beam and composite beam structure using concrete" (Patent Document 1). In the background art, '(a) a bottom plate formed by horizontally installing a thin steel plate to form a bottom surface of a beam; A pair of side vertical plates extending vertically from both ends of the bottom plate and forming both sides of the beam; A support wing portion extending horizontally from an upper end of the side vertical plate; A central vertical plate formed in a vertical direction from the center upper portion of the bottom plate and formed to have a length longer than the length of the side vertical plate; A steel sheet forming beam including; an upper flange extending horizontally from an upper end of the central vertical plate to form a 'T' shape with the central vertical plate; (b) a bottom plate unit having an end portion supported on the upper portion of the steel plate forming beam receiving blade to form a slab structure; And, (c) a beam-slab concrete integrally placed on the inside of the steel plate forming beam and the top of the bottom plate unit, wherein the steel plate forming beam is formed by continuously bending one steel plate member. One side end of the bottom plate is bent upward to form a side vertical plate, and the top of the side vertical plate is horizontally bent to form a support wing, and at the same time, the other side of the bottom plate is bent upward to form a central vertical plate and the center Using a steel sheet forming beam and concrete characterized in that the upper half of the vertical plate to form a horizontal half-beam forming beam formed by forming an upper flange, and the pair of half-steel forming beams are attached to the center of the vertical plate to be interviewed Composite beam structure '.

However, the background art also has a problem in that the cross section is increased or the amount of steel used increases in order to increase the buckling strength with respect to the compressive force of the upper element in response to the static moment of the central portion generated in the construction step.

Korea Patent Registration No. 0626542 "Composite beam structure using sheet metal beam and concrete"

The present invention is to solve the problems as described above, to configure the upper flange of the U-type on the top cross section for the compression resistance of the upper element corresponding to the static moment of the central portion generated in the construction step when used as a beam member It improves the stationary force to increase the compressive force and buckling strength, and it has excellent torsional resistance against not only vertical load but also horizontal force or asymmetrical load during construction, so that the bending strength of the cross section can be used without reducing by buckling. The purpose is to provide a top U-shaped lattice composite beam that can be layered and saved by embedding a part of the beam section into a slab at the same time.

The present invention comprises a top plate having a u-type or n-type cross-section consisting of a horizontal plate and a side plate extending up or down at both ends in the width direction of the horizontal plate; A lower plate formed of a horizontal plate, a side plate extending upward at both ends of the horizontal plate, and a mounting plate extending inward or outward at the upper end of the side plate, spaced apart from the upper flange by a predetermined distance. With flanges; To provide a top U-shaped lattice composite beam consisting of; connecting shear member coupled to connect the upper flange and the lower flange.

In addition, the horizontal plate is to provide a top U-shaped lattice composite beam characterized in that the shear connection hole is formed through a predetermined interval.

In addition, the upper flange is to provide a top U-shaped lattice composite beam, characterized in that the reinforcement plate is formed to extend in the width direction respectively at the end of the side plate.

In addition, the connecting shear member is to provide a top U-shaped lattice composite beam, characterized in that made of a lattice muscle.

In addition, the connecting shear member is formed by bending the wire rod and consists of a pair of horizontal portion formed in parallel, the side portion extending from the horizontal portion to the lower portion and the wire portion n shape consisting of a connecting portion connecting the side portion horizontally, the length of the lower flange The lower side of the side portion is bonded to the lower flange at regular intervals in the direction, and the upper flange is mounted on the upper portion of the connecting shear member horizontal coupling, or to provide a top U-shaped lattice composite beam characterized in that coupled to the lower portion of the horizontal portion.

In addition, the upper flange is made of n-type cross-section, the lower end of the side plate is formed with a coupling hole of a predetermined size at regular intervals, the top U-shaped lattice composite beam, characterized in that the coupling is fitted so that the connecting shear member is seated on the coupling sphere To provide.

In addition, at both ends in the longitudinal direction of the upper flange and the lower flange, the widthwise central portion of the horizontal plate is cut in a predetermined length inwardly in the longitudinal direction, respectively, to form an incision, and connects the upper middle plate, the lower plate and the widthwise middle portion of the upper plate and the lower plate. An end joining member having an H-shaped cross section consisting of a web is to provide a top U-shaped lattice composite beam, characterized in that the web is fitted to the incision.

In addition, a cover-type end joining member having an n-type cross section consisting of a horizontal top plate and a vertical side plate extending vertically downward from both sides in the width direction of the horizontal top plate is horizontally upper in each section at both ends in the longitudinal direction of the lower flange. It is to provide a top U-shaped lattice composite beam characterized in that the plate is formed to overlap the upper plate of the upper flange and formed in two layers and the vertical side plate is bonded to match the lower flange and the side plate.

Top U-shaped lattice composite beam of the present invention is configured to form a u-type upper flange on the top to improve the cross-sectional specific value for the compression resistance of the upper element in response to the static moment of the central portion generated in the construction stage when used as a beam member Or buckling strength, and the torsional resistance of the cross section is excellent against horizontal force or asymmetrical load as well as vertical load during construction, so that the bending strength of the cross section can be used without buckling, and concrete can be poured simultaneously when installing slab slabs. As a part of the cross section of the beam is embedded into the slab, it is possible to reduce the height of the floor.

The following drawings, which are attached in this specification, illustrate the preferred embodiments of the present invention, and together with the detailed description thereof, serve to further understand the technical spirit of the present invention. It should not be construed as limited.
1 is a perspective view of one embodiment of the top U-shaped lattice composite beam of the present invention.
FIG. 2 is a cross-sectional view of FIG. 1 and various modifications thereof.
3 is a perspective view of another embodiment of the top U-shaped lattice composite beam of the present invention.
4 is a cross-sectional view of the cross-sectional view and the modification of FIG.
5 is a perspective view showing another embodiment of the connecting shear member of the present invention.
6 is a cross-sectional view showing various bonding methods of the connecting shear member and the upper flange of the present invention.
Fig. 7 is a perspective view of another embodiment of Fig. 6 (a).
8 is a perspective view and a cross-sectional view of an embodiment in which the H-shaped end joining member is coupled to the top U-shaped lattice composite beam of the present invention.
9 is a perspective view and a cross-sectional view of an embodiment in which the lid-shaped end joining member is coupled to the top U-shaped lattice composite beam of the present invention.
10 is a perspective view of another embodiment of FIG.
11 is a cross-sectional view of an embodiment in which the compression reinforcing member is configured in the top U-shaped lattice composite beam of the present invention.

In the following the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the embodiments presented are exemplary for a clear understanding of the present invention is not limited thereto.

Hereinafter, the technical configuration of the present invention according to a preferred embodiment in detail.

The present invention consists of a U-type upper flange on the upper portion and a U-type lower flange and a lattice material connecting the lower portion to increase the buckling strength of the compressive force of the upper element against the central moment generated during the construction step, The present invention relates to a top U type lattice composite beam that can be RC-typed in the form of a beam by placing concrete at the same time when installing slab slabs.

1 is a perspective view of the top U-shaped lattice composite beam of the present invention, Figure 2 is a cross-sectional view of FIG.

1 and 2, the top U-shaped lattice composite beam 1 of the present invention constitutes an upper flange 10 having a u-type or n-type cross section at the top and a lower flange 20 of the u-type cross section at the bottom. And a connecting shear member 30 connecting the upper flange 10 and the lower flange 20 to increase the compressive force or the buckling strength with respect to the central static moment generated at the construction stage, and not only the vertical load but also the horizontal force during construction. The torsional resistance of the cross section is excellent against the asymmetrical load so that the bending strength of the cross section can be used without reduction by buckling.

1 and 2, the upper flange 10 of the present invention is configured in the longitudinal direction of the top u-lattice lattice composite beam 1, the compression force of the upper element against the static moment of the central portion generated in the construction step To increase the buckling strength.

1 and 2a (a), the upper flange 10 is formed of steel and horizontally formed horizontal plate 11 of a predetermined length is formed horizontally, and from both ends in the width direction of the horizontal plate 11 downward It consists of an extending side plate 12 is formed to have an n-type cross section.

In addition, the upper flange 10 may be formed to have a u-shaped cross-section so that the side plate 12 extends upward at both ends in the width direction of the horizontal plate 11, as shown in FIG. 2A (b).

As such, the upper flange 10 is formed to have a u-type or n-type cross section so that concrete can be poured simultaneously on the cross-section of the upper flange 10 during construction of the bottom plate slab so that the upper flange 10 is embedded in the slab bottom plate. It can also serve as a shear connector.

In particular, the horizontal plate 11 may be formed to be formed through the shear connecting hole 111 at a predetermined interval. Shear connection hole 111 may be made in a variety of shapes, such as circular, oval. The size may also be variously formed.

Connection shear member 30 for connecting the upper flange 10 and the lower flange 20 may be configured in a vertical direction, when the width of the horizontal plate 11 of the upper flange 10 is narrow in the diagonal direction Thus, the side plate 12 of the upper flange 10, as shown in Figures 1 and 2, so as to extend inclined to provide a bonding surface with the connecting shear member 30 bonded to the upper flange 10. You can do that.

In addition, the upper flange 10 has a vertical load and torsion during construction of the upper flange 10 so that the reinforcing plate 13 extending in the width direction, respectively, at the end of the side plate 12, as shown in Figure 2b You can also increase the rigidity for the back.

As shown in FIGS. 1 and 2, the lower flange 20 includes a horizontal plate 21, side plates 22 extending upward from both ends in the width direction of the horizontal plate 21, and an upper end of the side plate 22. It consists of a mounting plate 23 configured to extend in the width direction inward.

At this time, the width of the horizontal plate 21 is formed to be larger than the width of the horizontal plate 11 of the upper flange 10, it is possible to facilitate the connection of the connecting shear member (30).

3 is a perspective view of another embodiment of the top U-shaped lattice composite beam of the present invention, and FIG. 4 is a cross-sectional view of the cross-sectional view and the modification of FIG. 3.

As described above, the mounting plate 23 may extend in the width direction of the horizontal plate 21, and may extend outward in the width direction, as shown in FIGS. 3 and 4.

Such a mounting plate 23 can be easily mounted by mounting a well-known ready-made bottom plate such as a deck plate, a PC bottom plate, or a hollow bottom plate to directly construct the bottom plate, and at the same time, the bottom plate is top U. The construction of the type lattice composite beam 1 can be made at a certain height so that the floor height can be reduced.

The connecting shear member 30 is joined to connect the upper flange 10 and the lower flange 20 in a state spaced apart from each other, and the upper flange 10 and the lower flange 20 on both sides of the upper flange 10, respectively. It is combined by various known methods such as welding to connect the.

The connecting shear member 30 may be formed in various shapes, and the single inclined member having a predetermined length such as a round bar or a square root is formed at regular intervals in the longitudinal direction of the upper flange 10 so that the upper flange 10 and the lower flange ( 20) are bonded to connect, or made by using a round bar or square root, etc., the bent shape is configured to be repeated to be inclined repeatedly to a certain angle (typically 60 degrees) or to be formed to form a vertical and inclined shape repeatedly like a sawtooth shape By forming a unit bent muscle of a predetermined length, one or more unit bent muscles in the longitudinal direction can be configured to connect the upper flange 10 and the lower flange 20.

As shown in FIG. 2, the connecting shear member 30 has an upper side joined to the side plate 12 of the upper flange 10 and a lower side side joined to an end of the mounting plate 23 of the lower flange 20. As shown in FIG. 4, the upper part is joined to the side plate 12 of the upper flange 10 and the lower part is joined to the inner surface of the side plate 22 of the lower flange 20 in various ways. Can be bonded.

5 is a perspective view showing another embodiment of the connection shear member of the present invention, Figure 6 is a cross-sectional view showing various bonding methods of the connection shear member and the upper flange of the present invention.

In addition, as shown in FIG. 5, the connecting shear member 30 may be arranged at regular intervals in the longitudinal direction of the lower flange 20 so as to be joined to the upper flange 10.

That is, the connecting shear member 30 is formed by bending a wire rod and horizontally forms a pair of horizontal portions 31 and side portions 32 and side portions 32 extending downward from the horizontal portion 31 formed in parallel. It can be made of a wire rod n shape consisting of a connecting portion 33 to connect.

At this time, the side portion 32 may extend vertically downward or extend to have an inclination to open inward or outward with respect to the pair of horizontal portions 31.

As such, the n-type connection shear member 30 is such that the lower portion of the side portion 32 is joined to a predetermined position of the lower flange 20 at predetermined intervals in the longitudinal direction of the lower flange 20, and FIG. 6A. Likewise, the upper flange 10 is seated on the upper portion of the connecting shear member 30 horizontal portion 31 and bonded by various known methods such as welding, or as shown in Figure 6b, the upper flange 10 is connected to the connecting shear member ( 30) It may be mounted on the lower portion of the horizontal portion 31 to be bonded by a variety of known methods such as welding.

Fig. 7 is a perspective view of another embodiment of Fig. 6 (a).

That is, as shown in FIG. 7, when the upper flange 10 has an n-type cross section, a coupling hole 19 having a predetermined size is formed at a predetermined interval at a lower end of the side plate 12, and the coupling hole 19 is formed. The n-type connecting shear member 30 is fitted so as to be seated and joined so that the joint position of the connecting shear member 30 can be easily specified, as well as to be stably bonded.

8 is a perspective view and a cross-sectional view of an embodiment in which the H-shaped end joining member is coupled to the top U-shaped lattice composite beam of the present invention.

As shown in Fig. 8, the top U-shaped lattice composite beam 1 of the present invention is configured to form the H-shaped end joining members 50 each having an H-shaped cross section at the longitudinal end thereof, thereby facilitating the joining at the time of joining the pillar. At the same time it can be configured to configure the H-shaped end joining member 50 of various heights at the end without growing the dance of the top U-shaped lattice composite beam (1).

H-type end joining member 50 is composed of an upper plate 51, a lower plate 52 and a web 53 for connecting the upper plate 51 and the central portion in the width direction of the lower plate 52 to have an H-shaped cross section. , Ready-made H-beams, etc. can be used.

At this time, at both ends in the longitudinal direction of the upper flange 10 and the lower flange 20 for easy coupling of the H-shaped joining member 50, the widthwise center portions of the horizontal plates 11 and 21 are respectively longitudinally inward. Cut to a predetermined length so that the cutouts 115 and 215 are formed, and the web 53 of the H-shaped end joining member 50 is fitted to the cutouts 115 and 215 by a known method such as welding. Can be bonded.

9 is a perspective view and a cross-sectional view of an embodiment in which the lid-shaped end joining member is coupled to the top U-shaped lattice composite beam of the present invention.

In addition, the top U-shaped lattice composite beam 1 of the present invention is configured to form a lid-shaped end joining member 60 each having an H-shaped cross section at the longitudinal end thereof, thereby facilitating joining at the time of joining the pillar. By forming a two-ply structure with the upper flange 10 at the end of the top U-shaped lattice composite beam (1) it can be solved problems such as buckling caused by shear deformation or large compressive force.

The lid end joining member 60 consists of a horizontal top plate 61 and a vertical side plate 62 extending vertically downward on both sides in the width direction of the horizontal top plate 61. The horizontal upper plate 61 overlaps the upper plate 11 of the upper flange 10 in a predetermined section from both ends in the longitudinal direction of the lower flange 20 so as to be formed in two layers, and the vertical side plate 61 is The lower flange 20 and the side plate 22 are joined to match.

10 is a perspective view of another embodiment of FIG.

In particular, as shown in Figure 10, the lid end joining member 60 is composed of one at a predetermined position in the longitudinal center portion of the upper flange 10, or one or more at regular intervals in a predetermined section of the central portion To act as a band to reinforce the longitudinal center portion.

11 is a cross-sectional view of an embodiment in which the compression reinforcing member is configured in the top U-shaped lattice composite beam of the present invention.

In addition, as shown in Figure 11, the inner side or outer side of the side plate 12 of the upper flange 10, respectively, the side compression reinforcing member 40 in the longitudinal direction to be coupled by a method such as welding of the upper flange 10 The cross section can be reinforced. As shown in the drawing, it may be directly coupled to both sides of the upper flange 10 by welding or the like, and although not shown, when the connecting shear member 30 is coupled to the side of the upper flange 10, the connecting shear member ( It may be to be coupled to the outside of 30) by a method such as welding.

The top U-shaped lattice composite beam of the present invention as described above constitutes a u-type upper flange on the upper side so that the cross-sectional specific value for the compressive resistance of the upper element corresponds to the static moment of the central portion generated in the construction stage when used as a beam member. Increases compressive force and buckling strength by improving the torsional resistance of the cross section not only for vertical load but also for horizontal force or asymmetrical load during construction, so that the bending strength of the cross section can be used without reducing by buckling. At the same time, by placing a part of the cross section of the beam into the slab to be poured, there is a very useful effect that can reduce the height of the floor.

So far, the present invention has been described in detail with reference to the presented embodiments, but those skilled in the art may make various modifications and modifications without departing from the technical spirit of the present invention with reference to the presented embodiments. will be. The invention is not limited by the invention as such variations and modifications but only by the claims appended hereto.

1: Top U type Lattice Composite Beam
10: upper flange
11: horizontal plate
12: side plate
13: reinforcement plate
19: coupler
20: lower flange
21: horizontal plate
22: side plate
23: mounting plate
30: connecting shear member
31: horizontal section
32: side part
33: connection
50: H type end joining member
60: cover type end joining member

Claims (10)

An upper flange 10 having a u- or n-type cross section, comprising a horizontal plate 11 and a side plate 12 extending upwardly or downwardly at both ends in the width direction of the horizontal plate 11;
A horizontal plate 21, side plates 22 extending upward at both ends in the width direction of the horizontal plate 21, and mounting plates 23 extending inward or outward in the width direction from the upper end of the side plates 22; A lower flange 20 formed to be spaced apart from the upper flange 10 by a predetermined distance;
Consists of a connecting shear member 30 coupled to connect the upper flange 10 and the lower flange 20,
A lid-type end joining member 60 having an n-type cross section, comprising a horizontal top plate 61 and a vertical side plate 62 extending vertically downward from both sides in the width direction of the horizontal top plate 61,
The horizontal upper plate 61 overlaps with the upper flange 10 in a predetermined section from both ends in the longitudinal direction of the lower flange 20, and the vertical side plate 61 is the side plate 22 of the lower flange 20. Top U type lattice composite beam, characterized in that the bonding is configured to match. The method according to claim 1,
The horizontal plate 11 is a top U-shaped lattice composite beam, characterized in that the shear connection hole 111 is formed through a predetermined interval. The method according to claim 1,
Top flange 10 is a top U-shaped lattice composite beam, characterized in that the reinforcing plate 13 is formed to extend inward in the width direction, respectively at the end of the side plate (12). The method according to claim 1,
Connection shearing member 30 is a single inclined material is formed at regular intervals are joined to connect the upper flange 10 and the lower flange 20, or the unit bending muscles repeatedly configured to be repeatedly inclined so that a predetermined angle is repeated in the longitudinal direction 1 Top U-shaped lattice composite beam, characterized in that to connect more than two to the upper flange 10 and the lower flange 20 in succession. The method according to claim 1,
The connecting shear member 30 is formed by bending a wire rod and horizontally connects a pair of horizontal portions 31 and side portions 32 and side portions 32 extending downward from the horizontal portion 31 formed in parallel. Consists of a wire rod n shape consisting of a connecting portion 33,
The lower portion of the side portion 32 is bonded to the lower flange 20 at regular intervals in the longitudinal direction of the lower flange 20,
Top flange 10 is a top U-shaped lattice composite beam, characterized in that the coupling is seated on the upper portion of the connecting portion 30 horizontal portion 31, or coupled to the lower portion of the horizontal portion (31). The method according to claim 5,
The upper flange 10 is made of an n-type cross-section, the lower end of the side plate 12 is formed with a coupler 19 of a predetermined size at regular intervals,
Top U-shaped lattice composite beam, characterized in that the coupling is coupled to the 19 so that the connecting shear member 30 is seated. The method according to claim 1,
At both ends of the upper flange 10 and the lower flange 20 in the longitudinal direction, the central portions in the width direction of the horizontal plates 11 and 21 are cut in a predetermined length inward in the longitudinal direction, respectively, to form cutouts 115 and 215. ,
The H-shaped end joining member 50 having an H-shaped cross section is formed of a top plate 51, a bottom plate 52, and a web 53 connecting the top plate 51 and the center portion in the width direction of the bottom plate 52. Top U-shaped lattice composite beam, characterized in that 53 is fitted to the incision (115) (215). The method according to claim 1,
A cover type end joining member 60 having an n-type cross section is formed of a horizontal top plate 61 and a vertical side plate 62 extending vertically downward from both sides in the width direction of the horizontal top plate 61.
The horizontal upper plate 61 overlaps the upper plate 11 of the upper flange 10 in a predetermined section from both ends in the longitudinal direction of the lower flange 20 so as to be formed in two layers, and the vertical side plate 61 is lowered. Top U-shaped lattice composite beam, characterized in that the joint is configured to match the flange 20 and the side plate (22). The method according to claim 1,
Top U-shaped lattice composite beam, characterized in that at least one cover-type end joining member 60 is configured at a predetermined position or a predetermined interval in the longitudinal center portion of the upper flange (10). The method according to claim 9,
Top U-shaped lattice composite beam, characterized in that the lateral compression reinforcing member 40 is configured in the longitudinal direction on both sides in the width direction of the upper flange (10).

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