KR101470372B1 - Apparatus for reinforcing the girder and the roof frame structure using the same - Google Patents

Abstract

The present invention relates to a structure for reinforcing a light roof frame constructed by light steel frame or a PEB structure. The reinforcing structure installs a pair of joint portion reinforcing brackets at a portion wherein both end portions of a prefabricated beam and a post cross each other, installs a steel wire between the joint portion reinforcing brackets, and installs a girder member reinforcing apparatus at a lower portion of a girder of one or more prefabricated beams, wherein the steel wire is configured to be connected to a steel wire fixing stand of the girder member reinforcing apparatus, and the girder member reinforcing apparatus includes a girder connecting bracket located at a lower surface of a girder to be reinforced; a length controlling rod having one end connected and fixed to the girder connecting bracket; a steel wire fixing rod connected and fixed to the other end of the length controlling rod; and a steel wire motion preventing member installed at a lower end portion of the steel wire fixing stand or a lower post to prevent the steel wire from horizontally being shaken.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a reinforcing structure for reinforcing a beam member,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for reinforcing a lightweight roof frame made of a lightweight steel or PEB structure and more particularly to a beam member reinforcing device for increasing rigidity without damaging a beam structure of a conventional lightweight roof frame and The present invention relates to a reinforcement structure of a lightweight roof frame.

As a roof structure of a building requiring long span, such as a warehouse, a factory, or a gym, an economical structure that reduces the amount of steel used is preferred by using a lightweight steel having high sectional efficiency.

Especially, the PEB (Pre-Engineered Building) structure, which is made of steel plate and has a large web-dancing section, maximizes the mechanical efficiency by controlling the dancing of the members according to the bending moment of the structure, Since the superstructure is lightweight, it is possible to reduce the construction cost of the substructure such as the foundation, and since its introduction into the domestic market in the late 1980s, the application has been rapidly increasing since it is very economical.

However, since the design and the standard of PEB structure in Korea is insufficient, most of the buildings with PEB structure applied so far have been designed by foreign programs and are designed to conform to environmental conditions such as topography and climate in Korea In addition, it is designed to be a minimum member that can withstand the stress required for structural analysis. Therefore, when a sudden load exceeding the design load occurs, the structure easily collapses due to deformation of the member. For example, A resort gym could not bear the load caused by snowfall and collapsed, causing many casualties. Therefore, reinforcement work on the structure designed with the existing PEB structure is desperately required.

As a method of reinforcing a beam member, a method of reinforcing a beam member using a cable has been proposed as shown in Fig. The diagram shown in FIG. 1 conceptually shows the invention of the name "reinforcement structure of beam and method of reinforcement" registered in Registration No. 10-1080924.

The reinforcing structure of the beam proposed in the prior art includes a pair of end brackets 30 and 31 provided at both ends of the beam 20 and an intermediate bracket 50 provided between the beams 20, A steel wire intermediate support bracket 60 for supporting a middle portion of the steel wire 40 and an intermediate bracket 50 for supporting a middle portion of the steel wire 40, The coupler 70 is rotated to apply a tension to the steel wire 40 while separating the steel wire intermediate support 60 from the intermediate bracket 50 so that the tension of the steel wire 40 So that the vertical load of the beam 20 is reinforced by using a tension force.

However, the above-described reinforcing structure is provided with an end bracket to which a steel wire is fixed at both ends of the beam. Since the end bracket can not be located at the center of the transverse section of the beam and can only be located on the side of the beam, There is a possibility that buckling may occur in a web formed of a thin steel plate. In case of forming a reinforcing structure symmetrically on both sides of the beam, not only the cost is increased, It is not easy to cause the same tension to be generated. Therefore, the problem of the eccentricity is still present.

Further, when the above-described reinforcing structure is provided in the PEB structure having a long span, when the lateral load due to an earthquake or a typhoon acts, the steel wire 40 is shaken to rotate the steel wire middle support 60 in the lateral direction The movement of the intermediate support brace of the steel wire generates an unnecessary moment in the intermediate bracket 50 connecting the intermediate support bracket 60 and the bracket 20 so as to connect the bracket 20 and the intermediate bracket 50 Which may cause breakage or use of more fastening bolts.

In addition, the shaking of the steel wire 40 causes a problem that the designed tension can not be maintained by rotating the coupler 70

On the other hand, since a lightweight roof structure such as a PEB structure is provided with a lightweight roof panel such as a sandwich panel on a prefabricated beam (Rafter) followed by a purlin, The load acting vertically is not large. The small vertical load of the roof has the advantage of simplifying the substructure as mentioned above, but it is structurally very vulnerable to buoyancy that can be generated on the roof due to wind loads such as typhoons.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art described above, and it is an object of the present invention to provide a lightweight roof frame such as a PEB structure that not only has a downward vertical load greater than design load due to heavy snowfall, And it is an object of the present invention to provide a reinforcement device for a beam member and a reinforcement structure for a lightweight roof structure using the same.

Another object of the present invention is to provide a reinforcement structure for a beam member which can maintain the durability of the reinforcement structure by preventing the reinforcement of the reinforcement structure from being easily weakened or broken by horizontal load or vibration, .

According to a most preferred embodiment of the present invention for solving the above-mentioned problems, there is provided a beam splicing apparatus comprising: a beam splicing bracket to be positioned on a bottom surface of a beam to be stiffened; a length adjusting rod to which one end is connected and fixed to the beam splicing bracket; And a steel wire fixing member installed at a lower end of the steel wire fixing frame or the lower frame to prevent the steel wire from swaying from side to side; The joining bracket comprises a '-' shaped joining plate having a plurality of bolt holes so as to be bolted to a lower surface of the beam, and a supporting rib fixed to the length adjusting bar while supporting the '-' shaped joining plate; Wherein the length adjuster comprises an upper strut connected to the beam connecting bracket, a lower strut connected to the steel strut, and a rotation adjusting the overall length of the strut, the strut being positioned between the upper strut and the lower strut .

At this time, the steel wire fixing bar may be provided with a steel wire hole through which the steel wire is inserted so as to prevent it from being separated vertically and horizontally, and the lower surface of the steel wire fixing bar may be a flat surface on which a joining line can be installed in a direction perpendicular to the steel wire, Further, the steel wire fixing base may be configured to be hinged to an end of the lower edge.

In addition, the length adjuster may have a circular fixing groove around the outer surface of the upper support and a support protrusion around the inner surface thereof; A rotation protrusion inserted into the fixing groove of the upper support is formed on an upper periphery of the inner surface of the swivel, and a female screw is formed on the lower periphery of the inner surface of the swivel; And a male thread fastened to the female thread of the swivel base is formed around the outer periphery of the lower pedestal. The steel wire flow preventing member is formed of a circular ring shape made of an elastic material, And the upper portion may be fixed to the upper end of the length adjusting bar.

According to another preferred embodiment of the present invention, in a reinforcing structure of a lightweight roof structure of a beam structure constituted by a prefabricated beam, a pair of joint reinforcement brackets are provided at positions where both ends of the prefabricated beam intersect with the columns, Wherein at least one of the beam reinforcing apparatuses is provided at a lower portion of the prefabricated beam and the steel wire is connected to a steel wire fixing unit of the beam member reinforcing apparatus. A reinforcing structure of a lightweight roof frame is provided.

The joining portion reinforcing bracket may be composed of a '-shaped joining plate composed of a horizontal flange and a vertical flange, and a shearing reinforcement rib which holds an angle between the horizontal flange and the vertical flange while fixing the end portion of the steel wire, Can be hinged to the shear reinforcement ribs so that the steel wire can be rotated up and down. In addition, a tension adjusting device for the steel wire can be additionally provided at one end of the steel wire.

The present invention has general versatility that can be applied not only to the downward vertical load acting on the lightweight roof, but also to the case where the upward buoyant load acts.

In addition, the present invention not only simplifies the structure by combining the reinforcement structures with the reinforcement structure while reinforcing the flexural strength of the beams and the shear strength against the joining portions of the beams and the columns, And an eccentricity is prevented from being generated on the cross section of the beam.

The present invention also improves the durability of the reinforcing structure and improves the efficiency of reinforcement by preventing shaking of the steel wire.

Further, the present invention can be applied only by the bolt joining means, and there is no possibility of structural defects due to thermal deformation.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a conceptual diagram of a conventional technique for reinforcing a beam member using a cable. FIG.
2 is a perspective view illustrating the reinforcing structure of a lightweight roof according to an embodiment of the present invention.
3 is a perspective view of an embodiment in which the beam member reinforcing apparatus of the present invention is applied to the lightweight roof frame.
4 is a perspective view showing the reinforcement structure of the present invention with respect to the joining portion with the column of the lightweight roof frame.
5 is a perspective view illustrating a structure of a beam member reinforcing apparatus according to an embodiment of the present invention.
6 and 7 are cross-sectional views showing respective embodiments of a length adjuster constituting the beam member reinforcing apparatus of the present invention.
8 is a perspective view showing a structure of a beam member reinforcing apparatus according to another embodiment of the present invention.
9 is an explanatory view for explaining the effect of the beam member reinforcing apparatus shown in FIG.
10 is a perspective view showing each embodiment of the steel wire flow preventing member according to the present invention.
Fig. 11 is an explanatory view for explaining the function and operation effect of the wire rope preventing member of the present invention. Fig.
12 is a perspective view showing an example in which a tension adjusting device is added to a steel wire used in the reinforcing structure of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in order to obscure or obscure the technical idea of the present invention due to the detailed description of the known structure in describing the present invention, the description of the structure of the above known structure will be omitted. Also, although a lightweight roof structure having a PEB structure is described here as an example, it is obvious that the present invention is applied to a lightweight roof structure using a lightweight structure.

3 is a perspective view showing one embodiment of a beam strengthening apparatus 100 applied to the lightweight roof frame, and FIG. 4 is a perspective view showing the reinforcing structure of the lightweight roof frame according to one embodiment of the present invention. And a reinforcing structure according to the present invention on a joining portion of the lightweight roof frame with the column 600. FIG.

The reinforcing structure of the lightweight roof frame according to the present invention is characterized in that the reinforcing structure of the beam 500 that increases the strength of the beam 500 that is the structural member of the lightweight roof frame and the reinforcing structure of the portion where the beam 500 is joined to the column 600 The reinforcement structure is combined with each other organically to simplify the reinforcing structure, thereby facilitating the installation and reinforcing the roof frame efficiently.

3, the beam reinforcing apparatus 100 includes a beam reinforcing apparatus 100, a beam reinforcing apparatus 100, and a beam strengthening apparatus 100. The beam strengthening apparatus 100 includes a beam reinforcing apparatus 100, 300, the resistance of the beam 500 to the vertical load is improved by the tension of the steel wire 300.

The reinforcement of the lightweight roof frame on the joining portion with the column 600 is used as a fixing means for the steel wire 300 which applies stress while supporting the beam member reinforcing apparatus 100 together with the shearing reinforcement on the joining portion.

The reinforcement of the joining portion of the lightweight roof boat with the column 600 will be described in detail later. First, the beam member reinforcing apparatus 100 will be described.

5 is a perspective view showing the structure of the above-described honeycomb structural unit 100 according to an embodiment of the present invention.

As shown in FIG. 5, the beam reinforcing apparatus 100 of the present invention includes a beam connecting bracket 110 positioned at a lower surface of a beam 500 to be reinforced, and a beam connecting bracket 110 having one end connected to the beam connecting bracket 110 A steel wire fixing table 130 connected and fixed to the other end of the length adjusting table 120 and a steel wire flow preventing member 140 installed on the steel wire fixing table 130. [

The beam member reinforcing apparatus 100 configured as described above is capable of increasing the upward force (when the downward vertical load acts on the beam) or the downward force (the upward upward buoyant load acting on the beam) by applying the tension of the steel wire 300 To increase the overall strength of the roof frame.

The beam connecting bracket 110 is integrally joined to the bottom surface of the lower flange 510 of the beam 500 and acts together with the beam 500 to which the beam reinforcing apparatus 100 is reinforced, Not only to the beam 500 but also to increase the cross section of the beam 500 to improve the bending stiffness of the beam 500 itself.

At this time, the joining of the lower flange 510 of the beam 500 and the beam connecting bracket 110 is performed by bolting. The joining by the bolt fastening B prevents the structural deformation of the beam 500 by eliminating the welding means involving thermal deformation of the prefabricated beam made of a thin steel plate such as PEB.

The bead joining bracket 110 includes a '-' shaped joining plate 111 having a plurality of bolt holes 111a to be bolted to the lower surface of the beam 500, And a support rib 112 fixed to the length adjuster 120, which will be described later, while supporting the self-aligning plate 111.

As shown in FIG. 5, the '-' shaped bonding plates 111 may be configured to be symmetrical with respect to each other about the length adjuster 120, or they may be formed as a single unit. When the '-' shaped joining plate 111 is integrally formed as in the latter, the center may be bent according to the shape of the lower flange 510 of the beam 500 to have a gentle shape.

A supporting rib 112 is vertically attached to the lower portion of the '-' shaped bonding plate 111. The support rib 112 maintains the shape structure between the '-' shaped bonding plate 111 and the length adjuster 120 to improve the durability of the reinforcing structure, Is prevented from being concentrated on one side of the beam 500 and is uniformly transferred to the bottom surface of the lower flange 510 of the beam 500 through the '-shaped bonding plate 111 so that the structural stability of the beam 500 .

The length adjuster 120 is fixed to the beam connecting bracket 110. The length adjuster 120 includes an upper strut 121 connected to the beam connecting bracket 110, And a swivel 123 which is positioned between the upper strut 121 and the lower strut 122 and adjusts the overall length of the length adjuster 120. The lower strut 122 is connected to the upper strut 121 and the lower strut 122,

6 and 7 are cross-sectional views showing respective embodiments of the length adjuster 120 described above. FIG. 6 is a cross-sectional view of the length adjuster 120 according to the first embodiment, in which the length adjuster 120 is disassembled and combined. FIG. 7 is a cross-sectional view of the length adjuster 120 according to the second embodiment. Sectional view of the length adjuster 120 according to an embodiment of the present invention.

The length adjuster 120 functions to adjust the length of the beam member reinforcing apparatus 100 so that the tension of the wire 300 can be efficiently transmitted to the beam 500. However, It is also possible to function as a means for applying a tensile force to the base plate.

6, which shows the first embodiment of the length adjuster 120, the upper strut 121 is made of a hollow hollow pipe, a circular fixing groove 121a is formed around the outer circumference of the upper strut 121, A support protrusion 121b is formed.

The fixing groove 121a is hollowed without detaching the rotating table 123 at a predetermined position of the upper column 121 so that the lower table 122 is rotated in a state where the rotating table 123 is fixed to the upper column 121, To move up and down.

There is a possibility that the upper strut 121 and the lower strut 122 may swing due to the difference between the inner diameter of the upper strut 121 and the outer diameter of the lower strut 122. However, The support protrusions 121b are formed to support another support point in addition to the support point of the lower support 122 formed by the rotation table 123 so as to prevent the shaking between the upper support 121 and the lower support 122 do.

It is preferable that the support protrusions 121b are formed in a spiral shape so that they can be supported in all directions, or at least three or more independent protrusions are provided at the same interval.

As described above, the rotation table 123 is not separated from the upper support 121 by the fixing groove 121a of the upper support 121, but rotates around the rotation support 123. For this purpose, A rotation protrusion 123a inserted into the fixing groove 121a of the upper support 121 is formed and a female screw 123b is formed on the lower circumference of the inner surface of the rotation table 123 to move the lower support 122 up and down .

It is preferable to further provide a grip 123c around the outer surface of the swivel 123 or configure the outer circumference itself to have a polygonal shape and the circumferential shape (not shown) of the grip 123c or the polygon, Thereby facilitating the rotating operation.

A male screw 122a fastened to the female screw 123b of the swivel 123 is formed around the outer surface of the lower strut 122.

The length adjuster 120 of the first embodiment having the above structure is configured such that the male screw 122a provided on the lower strut 122 is rotated by the rotation of the swivel 123 when the swivel 123 fixed to the upper strut 121 is rotated, Between the valleys of the male screw 122a of the lower strut 122 passing through the female screw 123b of the swivel 123 are inserted into the female screw 123b of the swivel 123, The support protrusion 121b of the upper support 121 is inserted to prevent the lower support 122 from shaking in the upper support 121. [

According to the second embodiment of the length adjuster 120 shown in FIG. 7, a screw rod 124 having a male screw 124a opposite to the mutually opposite direction is further attached to the upper and lower portions of the rotation table 123, The struts 121 and the lower struts 122 are provided with internal threads 121c and 122b on the inner surface so as to correspond to the male threads 124a of the respective threaded rods 124. [

The entire length of the length adjuster 120 is adjusted as the upper strut 121 and the lower strut 122 are moved toward or away from each other at the same time as the swivel 123 is rotated.

A wire fixing bar 130 is fixed to the other end of the length adjuster 120 that is not joined to the beam connecting bracket 110.

The steel wire fixture 130 is provided with a steel wire hole 131 in a longitudinal direction in which the steel wire 300 is installed so that the steel wire 300 can penetrate. The steel wire hole 131 is closed to prevent the steel wire 300 from being separated from the left and right direction as well as to prevent the steel wire 300 from being separated from the vertical direction, The boom member reinforcing apparatus 100 of the present invention can be applied to an upward buoyant load caused by a typhoon or the like.

In addition, the lower surface of the wire fixing bar 130 facilitates the installation of the joists by performing a fixing bracket function of a joist line (not shown) installed in a direction perpendicular to the steel wire 300. At this time, in order to facilitate installation and fixing of the joists, it is preferable that the lower surface of the steel wire fixing table 130 is formed as a flat surface to widen the attachment area with other members.

Meanwhile, various means (not shown) such as a wedge inserted into the steel wire hole 131 may be used for fixing the steel wire fixing bar 130 to the longitudinal direction of the steel wire 300.

The wire fixing bar 130 may be completely fixed to the lower support 122 of the length adjusting bar 120 as shown in FIG. 5, but in another embodiment of the present invention, 130 are hinged (H) to the ends of the lower strut 122 such that the upper strut 130 can rotate up and down in the direction of the strand 300.

The beam strengthening apparatus 100 having the wire fixing table 130 hinged to the lower support 122 is very advantageously used when the tensioned wire 300 is used at a tilted position.

Fig. 9 conceptually illustrates the effect exerted by the hinge-coupled steel wire fixture 130. Fig.

When the beam strengthening apparatus 100 in which the wire fixing bar 130 is completely fixed to the lower support 122 is applied to the steel wire 300 formed asymmetrically on both sides of the beam supporting member 130, The torsion phenomenon K is generated in the steel wire 300 located at both ends of the steel wire 130 and the torque is generated at the joint portion between the steel wire fixing bar 130 and the lower steel wire 122, 300 and the beam member reinforcing apparatus 100, the durability of the steel wire 300 and the beam member reinforcing apparatus 100 is lowered due to the occurrence of unnecessary stress, and the efficiency of reinforcement is lowered.

9 (b), when the beam reinforcing apparatus 100 in which the wire fixing table 130 is hinged (H) hinged to the lower support is applied to the inclined steel wire 300, Since the wire 130 has a predetermined angle in the length adjuster 120 corresponding to the shape of the sloped steel wire 300, the wire 130 does not cause the wire 300 to bend, No torque is generated at the joining portions of the struts 122 and there is no possibility of problems with respect to the durability and the efficiency of reinforcement of the steel wire 300 and the beam member reinforcing apparatus 100. [

Fig. 10 shows each embodiment of the wire-line flow preventing member 140. Fig.

The wire-line preventing member 140 is provided at the lower end of the wire fixing bar 130 or the lower supporting bar 122 to prevent the wire 300 from swaying from side to side. FIG. 10 (a) 10 (b) shows an example in which the steel wire fixing member 130 is hinged to the lower support 122, and FIG. 10 (b) And the steel wire flow preventing member 140 is installed. Even if the wire fixing bar 130 is completely fixed to the lower support 122, the wire breaking prevention member 140 may be installed at the lower end of the lower support 122 as shown in FIG. 10 (b).

The steel wire flow preventing member 140 may be formed of an elastic material so as to exert an elastic force with respect to the right and left and up and down directions of the steel wire 300, And has a circular ring shape having an imaginary vertical central axis (O).

The lower portion of the steel wire guide member 140 is installed at the lower end of the steel wire fixing bar 130 or the lower support 122 and the upper portion of the steel wire guide 140 is fixed to the upper end of the length adjuster 120, Respectively.

Meanwhile, as described in the related art, when an irregular horizontal load is generated in the steel wire 300 by a typhoon or an earthquake, the steel wire 300 supporting the beam member reinforcing apparatus 100 is shaken to the left and right.

The left and right wobbling of the steel wire 300 repeatedly generates torques T in mutually opposite directions repeatedly on the joining bracket 110 fixed to the lower flange 510 of the beam 500, The upper part is fixed to the upper end of the length adjuster 120 and the lower part is fixed to the lower end of the steel wire fixing table 130 or the lower support 122. In this case, the bolts are broken or the fastening state is canceled to reduce the durability of the reinforcing structure. The steel wire flow preventing member 140 of the present invention minimizes the left-right swing of the steel wire 300 by using the elastic force of the steel wire 300 in the left-right direction so that the reinforcing structure is not easily broken, Let's do it. Fig. 11 illustrates the functions and operation effects of the wire-line flow preventing member 140 with reference to drawings.

Along with this, the elastic force of the steel wire flow preventing member 140 in the up-and-down direction is a part where the fixing groove 121a of the upper support 121 and the rotation protrusion 123a of the rotation base 123 contact each other, The upper strut 121 such as the portion where the projection 121b contacts the male screw 122a of the lower strut 122 and the portion where the female screw 123b of the swivel 123 and the male screw 122a of the lower strut 122 contact each other, The rotation table 123 and the lower support 122 are fastened to each other to increase the adhesion of the parts to each other to prevent any rotation of the turntable 123 in the screw fastening type so that the length of the length adjuster 120 is not changed .

The structure and operation of the beam member reinforcing apparatus 100 have been described so far. Next, a reinforcing structure of the lightweight roof frame using the beam member reinforcing apparatus 100 will be described.

As shown in FIG. 2, the reinforcing structure of the lightweight roof frame increases the bending strength of the beam 500 by using the beam strengthening apparatus 100 and increases the bending strength of the joint between the beam 500 and the column 600 The end portion of the steel wire 300 for supporting the beam member reinforcing apparatus 100 is fixed to a member for reinforcing the joint portion between the beam 500 and the column 600, Thereby reducing the material and increasing the flexural strength by the beam member reinforcing apparatus 100 more efficiently and minimizing the inhibition factor of the appearance which may be generated according to the installation form of the steel wire 300. This will be described in more detail.

4 shows a structure in which the joining portions of the beam 500 and the column 600 are reinforced. The strengthening of the joining portions of the beam 500 and the column 600 by the joining of the beam 500 and the column 600, In the reinforcing structure of the roof frame, a pair of joint reinforcement brackets (210) are provided at positions where both ends of the assembled beam and the column (600) intersect.

The joint reinforcement bracket 210 includes an A-shaped bonding plate 211 composed of a horizontal flange 211a and a vertical flange 211b, And a front end reinforcing rib 212 for maintaining the angle of the flange 211b.

4, the horizontal flange 211a and the vertical flange 211b may be separated from each other. However, the horizontal flange 211a and the vertical flange 211b may be separated from each other, 211b may be formed integrally (not shown). Here, the terms 'horizontal flange' and 'vertical flange' mean that they coincide with the lower face of the beam 500 and the side face of the column 600, and do not mean the accurate horizontal state and vertical state .

The joint reinforcing bracket 210 composed of the braiding plate 211 and the shear reinforcing ribs 212 is formed by fixing the steel wire 300 while shearing the joint between the beam 500 and the column 600 And serves as an end.

That is, the steel wire 300 is installed between the pair of joint reinforcement brackets 210, and at least one of the beam reinforcements 100 is installed at a lower portion of the beam of the prefabricated beam, And is connected to the steel wire fixture 130 of the reinforcement device 100.

Therefore, it is not necessary to provide a separate wire fixing member, and the fixing structure of the steel wire 300 to the joint reinforcing bracket 210 can exhibit a saving effect of the used material. In addition, since both the joining ends and the beam member reinforcing apparatus 100 are aligned in the longitudinal direction of the beam 500 at the center of the lower transverse section of the beam 500, the eccentricity of the beam 500 in the cross- There is no fear that a load will be generated.

Also, the steel wire 300 may have a predetermined inclination angle with respect to the horizontal direction or the length of the beam member reinforcing apparatus 100, if necessary. In this case, it is necessary that the end of the steel wire 300 is hinged (H) to the fixing end so that the steel wire 300 can be rotated up and down so that the steel wire 300 is not bent at the fixing end. 300 are directly protruded in the direction of the steel wire 300, it is possible to more easily construct the above-described hinge coupling structure.

On the other hand, the flexural strength to be reinforced through the beam member reinforcing apparatus 100 is proportional to the arm length. Therefore, if the arm length is increased, it is possible to have the necessary bending force with a small force. In the present invention, by fixing the steel wire 300 to the joint reinforcing bracket 210, the arm length with respect to the point of action (the position of the beam member reinforcing apparatus 100) becomes maximum.

Accordingly, even if a tensile force is applied to the steel wire 300 only to the extent that the steel wire 300 is substantially straight, the effect of increasing the required strength can be obtained. In addition, the degree of the shape of the steel wire 300, Can be minimized and the appearance can be prevented from being hindered.

The tension adjusting device 310 of the steel wire 300 may be further provided on one end side of the steel wire 300 provided between the pair of joint reinforcement brackets 210 as shown in FIG. Since the tension adjusting device 310 is not greatly different from the structure of the length adjuster 120 constituting the beam member reinforcing apparatus 100, the description thereof will be omitted.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious that it will be possible to carry out various modifications thereof. It is therefore intended that such modifications are within the scope of the invention as set forth in the claims.

100: Boat member reinforcing device 110: Beam joining bracket
120: length adjuster 130: steel wire holder
140: Steel wire flow prevention member 210: Joint reinforcement bracket
300: Steel wire 310: Tension adjustment device
500: beam 510: lower flange
600: Column

Claims (8)

A length adjuster 120 having one end connected to the beam connecting bracket 110 to be connected to the other end of the length adjuster 120; And a steel wire flow preventing member 140 installed at a lower end of the steel wire fixing stand 130 or the lower support 122 to prevent the steel wire 300 from swaying from side to side;
The joining bracket 110 includes a '-shaped joining plate 111 having a plurality of bolt holes 111a so as to be bolted to the lower surface of the beam 500, and a' - 'shaped joining plate And a support rib 112 fixed to the length adjuster 120 while supporting the support ribs 111;
The length adjuster 120 includes an upper strut 121 connected to the beam connecting bracket 110, a lower strut 122 connected to the steel strut 130, and a lower strut 122 connected to the upper strut 121 and the lower strut 122 And a swivel (123) for adjusting the overall length of the swivel member (123). The apparatus of claim 1, wherein the steel wire fixing table (130) is provided with a steel wire hole (131) through which the steel wire (300) is installed to be prevented from being separated vertically and horizontally, 300), and a flat surface on which a joining line can be installed. The beam member reinforcing apparatus according to claim 1, wherein the wire fixing bar (130) is hinged (H) to an end of the lower support (122). 2. The apparatus of claim 1, wherein the length adjuster (120)
A circular fixing groove 121a is formed around an outer surface of the upper strut 121 and a supporting protrusion 121b is formed around an inner surface of the upper strut 121; A rotation protrusion 123a inserted into the fixing groove 121a of the upper support 121 is formed on the upper surface of the inner surface of the rotation table 123 and a female screw 123b is formed on the lower circumference of the inner surface of the rotation table 123 ; And a male screw (122a) fastened to the female screw (123b) of the swivel (123) is formed around an outer surface of the lower strut (122). 2. The apparatus according to claim 1, wherein the wire-line preventing member (140) is made of an elastic material and has a circular ring shape having a virtual vertical center axis (O) Is fixed to the upper end of the beam member (120). In a reinforced structure of a lightweight roof structure of a beam structure composed of a prefabricated beam,
A pair of joint reinforcement brackets 210 are provided at positions where both ends of the assembled beam and the columns 600 intersect with each other and a steel wire 300 is provided between the joint reinforcement brackets 210, Wherein at least one of the beam strengthening apparatuses according to any one of claims 1 to 5 is installed at a lower portion of the beams of prefabricated beam 500 and the steel wire 300 is fixed to the steel wire fixing base 130 of the beam reinforcing apparatus 100, Wherein the reinforcing structure of the lightweight roof frame is connected to the reinforcing member. The joining part reinforcement bracket according to claim 6, wherein the joining part reinforcing bracket includes a '' 'shaped joining plate 211 formed of a horizontal flange 211a and a vertical flange 211b, And an end of the steel wire 300 is hinged to the front end reinforcing rib 212 to be connected to the steel wire 300. [ Wherein the reinforcing structure of the lightweight roof frame is configured to be rotatable up and down. 7. The reinforced structure of a lightweight roof frame according to claim 6, wherein a tensioning force adjusting device (310) of the steel wire (300) is further provided on one end side of the steel wire (300).

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