KR102342075B1 - Connecting structure for steel cross-beam - Google Patents

Abstract

The present invention relates to a steel bulkhead connection structure that can support the steel bulkhead stably by distributing the load on the steel bulkhead by improving the support structure of a gusset plate and can suppress the movement of steel bulkheads in the left and right directions, and has an improved structure to prevent deformation of the form by transmitting the pressing force to the form side so as to prevent the mortar from flowing out on the edge of the gusset plate due to the deformation of the form due to the weight when pouring concrete on the girder. The steel bulkhead connection structure includes the gusset plate, the steel bulkhead, and a connection bracket.

Description

Steel bulkhead connection structure {CONNECTING STRUCTURE FOR STEEL CROSS-BEAM}

The present invention relates to a steel bulkhead connection structure, and in particular, by improving the support structure of the gusset plate, it is possible to stably support the steel bulkhead by dispersing the load of the steel bulkhead, and to suppress the flow of the steel bulkhead in the left and right directions. In addition, the structure is designed to prevent the deformation of the form by transmitting the pressing force to the formwork to prevent the mortar from flowing out on the edge of the gusset plate due to the deformation of the form due to the weight of the concrete during concrete pouring of the girder. It relates to an improved steel bulkhead connecting structure.

In general, a crossbeam is a part constructed after installing a girder on the upper part of a pier or abutment. It prevents the girder from overturning and distributes and reduces the stress generated by transversely distributing the force applied to each girder to the adjacent main beams. It is an important structural part that plays a role.

In general, a bridge constructed with a PSC beam or IPC beam structure is formed in a grid form by arranging crossbeams at regular intervals between girders installed on the upper part of a pier or abutment in the axial direction.

Conventionally, in order to integrally connect a crossbeam to a girder, the manufactured girder projects connecting reinforcing bars to a certain length at regular intervals in cross section at the location where the crossbeams are joined. They are joined together, and the formwork and copper bars are installed, and then the concrete is poured and integrated.

In this way, the girder made of the ready-made material is manufactured with the connecting reinforcing bar briefly exposed due to the installation problem of lifting and mounting the pier or the upper part of the abutment at the site. In this way, since the connecting reinforcing bars for connecting the crossbeams do not secure sufficient length of lap splicing in the girder, after mounting the girder, the main reinforcing bars of the crossbeam are connected to the connecting reinforcing bars to perform the reinforcement work for the crossbeam.

At this time, welding is mainly performed during reinforcement work for crossbeams, and the high pier height is always exposed to the risk of safety accidents. There was a problem being

In addition, high-strength reinforcing bars are used for connecting reinforcing bars protruding from the girder when forming crossbeams, and mild steel rebars are used for main bars during crossbeam reinforcement. As a result, there was a problem in that the attachment strength of the crossbeam and the integrity of the structure were lowered. In addition, since the concrete surface to which the crossbeam is to be joined is formed smoothly in the girder, the problem of adhesion between the concrete forming the girder and the concrete forming the crossbeam is a problem in that the attachment strength of the crossbeam is weak, and a structurally unstable bridge structure cannot but be built. there was

In addition, when forming a crossbeam, it goes through the steps of installing a formwork for pouring concrete, concrete pouring and curing, and dismantling the formwork. there was

As a prior art related to the existing river robe, as disclosed in Korean Patent Publication No. 10-2096744 "Ganggar robo capable of accommodating horizontal, vertical and rotational errors" (registration date: March 27, 2020), between adjacent girders In the river robe installed to accommodate horizontal, vertical and rotational errors, the gang robo is a plurality of bracings connected through bolt coupling between the connecting plates fixedly installed on the adjacent girder side, respectively, and the connecting plates spaced apart from each other. including; two or more bracing horizontal slots formed in the bolt connection part of one end of the bracing; a connecting plate vertical slot formed in the connecting plate at a position corresponding to the bracing horizontal slot; two or more bracing vertical slots formed in the bolt connection part of the other end of the bracing; It consists of a configuration including a connecting plate horizontal slot formed in the connecting plate at a position corresponding to the bracing vertical slot.

As another prior art related to the existing river robe, as disclosed in Korean Patent Registration No. 10-0700402 "Ganga robe and its construction method" (registration date: 2007.03.21), the side of the girder installed on the upper part of the pier A plurality of anchor bolts passing through and installed at regular intervals up and down to pour concrete on the girder and integrate; a fixing guide plate which fixes a plurality of anchor bolts when pouring concrete for forming the girder and is embedded in the girder; A fixing part having a through hole formed so as to be fastened to the anchor bolt and having a fastening part fastened to the side of the girder, and an I or H shape having a flange and a web formed therein, and comprising an extension extending from the fastening part; and a connecting part having the same shape as the extension part of the fixing part and positioned between the fixing parts to interconnect the fixing parts.

However, in the existing steel beam structure, when the formwork is curved and deformed by the weight of the concrete in the formwork during beam concrete pouring, mortar flows out between the formwork. The disadvantage is that work input is required.

In addition, the existing Ganga Robo has the disadvantage that it cannot respond to horizontal and axial forces, and during the lifting operation, one end of the Ganga Robe is bolted to the gusset plate connection surface on one side, and then the other end of the Ganga Robo is bolted to the opposite plate. When the beam is deformed, bolting work is not possible, so the beam is moved and deformed to a separate equipment for bolting, or additional materials are manufactured and carried in to the site.

In addition, if the existing Ganga Robo flows left and right after both ends are bolted to each gusset plate, the gusset plate may be bent and deformed. Therefore, when a horizontal force acts on the river robe, there is a fear that the connecting surface of the gusset plate is deformed.

In the process of welding the end of the existing connecting reinforcing bar to the bonding surface of the gusset plate, the cross-sectional area of the welded part is narrow, so if the welding operation is difficult and the welding is not performed properly, the connection between the gusset plate and the connecting reinforcing bar is released and the function will be lost. In addition, there is a risk of mortar leaking out of the formwork during concrete pouring due to incorrect fabrication of the length of the connecting reinforcing bars.

Korean Patent Publication No. 10-2096744 "Gangga Robo capable of accommodating horizontal, vertical and rotational errors" (Registration date: March 27, 2020) Korean Patent Publication No. 10-0700402 "Ganga robo and its construction method" (Registration date: 2007.03.21)

The present invention was created to solve the above problems in view of the above, and its purpose is to improve the support structure of the gusset plate to distribute the load of the steel bulkhead to stably support the steel bulkhead, and to An object of the present invention is to provide a steel bulkhead connecting structure whose structure is improved so as to suppress the flow of the steel bulkhead.

Another object of the present invention is to transmit a pressing force to the formwork to prevent the mortar from flowing out on the edge of the gusset plate due to the deformation of the formwork due to the weight of the girder when the concrete is poured, so that the structure is improved to prevent deformation of the formwork. To provide a steel bulkhead connection structure.

The present invention for achieving the above object is a gusset plate in which the steel bulkhead, which is a section steel, is respectively coupled to opposite surfaces of the girders spaced apart from each other; a steel bulkhead connected in a transverse direction facing the gusset plate; and a connecting bracket for adhering the formwork for the girder to the coupling surface side of the gusset plate. In the steel bulkhead connection structure, the gusset plate is formed to protrude from the coupling surface and is bolted to the web portion of the steel bulkhead. A connection surface and a connection plate disposed on the upper side of the connection surface and coupled to the coupling surface, the upper flange of the steel bulkhead is seated and bolted, and a cutaway slot is formed so that the web portion of the steel bulkhead is fitted, and the lower side of the connection surface It is disposed in the coupling surface and is composed of a seating plate to which the lower flange of the steel bulkhead is seated and bolted, the steel bulkhead is a cutout formed at the lower flange end of the steel bulkhead to prevent interference with the connection plate wherein the connection bracket includes a support surface coupled to the connection surface to be fixed with a bolt, a bent surface bent from the support surface, a nut member provided to protrude outward from the bent surface and fixed, and the nut member It is fastened to the end is characterized in that it is composed of a fixing bolt for pressing the mold interposed between the engaging surface and the bent surface of the gusset plate.

The steel bulkhead further includes a lifting ring provided on the upper side of the upper flange of the steel bulkhead, and an interval adjusting rod connected to the lifting ring at one end and supported by the slab connecting reinforcing bar at the other end provided on the upper side of the girder.

The cut-out slot is formed at an eccentric position from the center of the connection plate.

A cushion member coupled to protrude from the left and right inner surfaces facing each other of the incision slot and having its own elastic force is further provided.

The cushion member is formed with an inclined surface having an inclination angle such that the thickness becomes thinner toward the inlet side of the incision slot.

It further includes a connecting bar disposed inside the girder and formed in a "□" shape or a circular cross section so that the end is welded to the coupling surface of the gusset plate in a surface contact manner.

The present invention combines the connecting plate on the upper side of the connection surface of the gusset plate in the construction work of the steel bulkhead connecting the girders on one side and the other side and coupling the seating plate on the lower side of the connecting surface, so that one end edge of the steel bulkhead In the process of being in close contact with the gusset plate, the web portion of the steel bulkhead enters into the cutout slot of the connecting plate, and the upper flange edge of the steel bulkhead is seated on the upper side of the connecting plate. Since the lower flange is seated, it is possible to stably support one end of the steel bulkhead in the process of fastening with a high-tensile bolt to the connection surface of the gusset plate of the web portion of the steel bulkhead. has

In addition, the present invention fixes the support surface of the connection bracket to the connection surface, the formwork is interposed between the engagement surface of the gusset plate and the bent surface of the connection bracket, and the fixing bolt is applied to the formwork through the nut member integrally coupled to the bending surface. By fastening and firmly pressing and supporting the rim of the formwork with the fastening force of the fixing bolt and the nut member, it is possible to prevent deformation of the rim portion of the formwork by the weight of the concrete poured into the formwork, and mortar during the concrete pouring process It has the advantage of being able to prevent leakage to the outside through the formwork.

And the present invention is safe and easy for coupling with the gusset plate while stably seating one end of the steel bulkhead on the connection plate and the seating plate using a lifting ring and a spacing adjusting rod while supporting the spacing adjusting rod on the upper side of the other side of the girder. It has the advantage of being able to lift steel bulkheads.

1 is a block diagram showing the configuration of a steel bulkhead connection structure according to the present invention.
Fig. 2 is a plan view of Fig. 1;
3 and 4 are views showing the state before and after the connection plate and the seating plate of the present invention are coupled to the gusset plate.
5 is a perspective view showing a connecting bracket and a nut member of the present invention.
Fig. 6 is a plan view of Fig. 5;
7 is a perspective view showing a state in which a cushion member is further provided in the cutting slot of the present invention.
8A and 8B are perspective views illustrating embodiments of a connecting bar according to the present invention.

In describing the present invention, if it is determined that a detailed description of a related known technology or configuration may unnecessarily obscure the gist of the present invention, a detailed description thereof will be omitted. And the terms to be described later are terms defined in consideration of functions in the present invention, and may vary according to the intention or custom of the user. Therefore, the definition should be made based on the content throughout this specification. In addition, 'including' a certain component means that other components may be further included, rather than excluding other components, unless otherwise stated.

When the steel bulkhead connection structure according to the present invention is described with reference to FIGS. 1 to 8B, the steel bulkhead 50, which is a section steel, is coupled to opposite surfaces of the girders 10 spaced apart from each other, respectively, the gusset plate 100 and; a steel bulkhead 50 connected in a transverse direction facing the gusset plate 100; and a connection bracket 400 for adhering the formwork 20 for the girder to the side of the coupling surface 110 of the gusset plate 100. In the steel bulkhead connection structure comprising a; The connecting surface 120 is formed to protrude from 110 and is bolted to the web 55 of the steel bulkhead 50 , and is disposed on the upper side of the connecting surface 120 and is coupled to the engaging surface 110 . and the connection plate 200 in which the cut-out slot 210 is formed so that the upper flange 52 of the steel bulkhead 50 is seated and bolted and the web 55 of the steel bulkhead 50 is fitted, and the connection It is disposed on the lower side of the surface 120 and is coupled to the coupling surface 110 and consists of a seating plate 300 to which the lower flange 54 of the steel bulkhead 50 is seated and bolted together, and the steel bulkhead 50 is A cutout 56 is provided at the end of the lower flange 54 of the steel bulkhead 50 to prevent interference with the connection plate 200 , and the connection bracket 400 is on the connection surface 120 . A support surface 410 coupled to be fixed with a bolt, a bent surface 420 bent from the support surface 410 , and a nut member 430 provided to protrude and be fixed to the outside of the bent surface 420 and , It is fastened to the nut member 430 and the end is composed of a fixing bolt 440 for pressing the mold 20 interposed between the engaging surface 110 and the bent surface 420 of the gusset plate 100 do.

1 and 2, the steel bulkhead 50 is composed of an H-beam or I-beam steel section having a structure in which the upper flange 52 and the lower flange 54 are connected to the web 55, and , to perform a function of connecting the girders 10 spaced apart from each other to be truss-bonded in the transverse direction via the gusset plate 100 .

A gusset-plate (100) which is integrally coupled by a mortar and a connecting reinforcing bar 15, respectively, is integrally coupled to the inner side surfaces of the girder 10 facing each other.

The coupling surface 110 of the gusset plate 100 is formed in the form of a square plate coupled to be in surface contact with the inner surface of the girder 10 , and the connection surface 120 protrudes from the coupling surface 110 . It has a structure that is extended and bolted after surface contact with the web 55 of the steel bulkhead 50 .

In addition, the connection plate 200 provided on the upper side of the connection surface 120 of the gusset plate 100 is, as shown in FIG. 4, the edge portion is integrally welded to the coupling surface 110, or in FIG. As shown, it may be fastened to the flange portion of the connection plate 200 with bolts.

As shown in FIGS. 3 and 4, the connection plate 200 is formed in a rectangular plate shape, and has a structure in which a cut-out slot 210 is formed at an eccentric position from the center.

The cut-out slot 210 has a shape opened toward the girder 10 located on the opposite side so that the web 55 portion of the steel bulkhead 50 can enter.

As the cut-out slot 210 is formed at a position spaced apart from the connection surface 120 , it is possible to avoid interference between the web 55 portion of the steel bulkhead 50 and the connection surface 120 .

The steel bulkhead 50 has a plurality of first flange holes 52a formed on the edge of the upper flange 52, and a plurality of second flange holes 54a are formed on the edge of the lower flange 54, , has a structure in which a plurality of third flange holes (55a) are formed in the web (55) portion for bolting connection with the connection surface (120).

The connection plate 200 has a structure in which a plurality of first connection holes 205 are formed so as to be bolted to the first flange holes 52a formed in the upper flange 52 of the steel bulkhead 50 .

The seating plate 300 is formed in the form of a square plate, is spaced apart from the lower side of the connection surface 120, has a structure coupled to the lower portion of the coupling surface 110 by welding or flange bolting coupling method.

In addition, the seating plate 300 has a width in the horizontal direction that is larger than the width in the horizontal direction of the connection surface 120 , and the upper surface is disposed at a position spaced downward from the lower edge of the connection surface 120 . Accordingly, the lower flange 54 of the steel bulkhead 50 is interposed between the lower edge of the connection surface 120 and the upper surface of the seating plate 300 .

The seating plate 300 has a structure in which a plurality of second connection holes 305 are formed so as to be bolted to the second flange holes 54a formed in the lower flange 54 of the steel bulkhead 50 .

In addition, as shown in FIG. 4 , the steel bulkhead 50 has left and right side edges based on the lower portion of the web 55 on the end edge of the lower flange 54 on the seating plate 300 . It has a structure in which the cutout 56 is cut by a volume (length) that does not interfere with the connection plate 200 during the seated bonding process. Accordingly, the lower flange 54 end of the steel bulkhead 50 is positioned inside the steel bulkhead 50 by a length corresponding to the cutout 56 than the end of the web 55 .

The cut-out portion 56 connects the steel bulkhead 50 to the seating plate 300 from the upper side of the connecting plate 200 to the lower side using the spacing adjusting rod 600 supported by the reinforcing bar 70 for connecting the slab. During the lifting operation, the lower flange 54 of the steel bulkhead 50 does not interfere with the connection plate 200 .

The gusset plate 100 has a structure in which a coupling hole 122 for coupling with a high tension bolt to the third flange hole 55a formed in the web 55 portion of the steel bulkhead 50 on the connection surface 120 is formed. have

The steel bulkhead 50 includes a lifting ring 57 provided above the upper flange 52 , one end connected to the lifting ring 57 , and the other end provided on the upper side of the girder 10 for connecting the slab. It further includes a spacing adjusting rod 600 supported on the reinforcing bar 70 .

The lifting ring 57 is integrally formed on the upper side of the upper flange 52 , and has a structure in which one end of the spacing adjusting rod 600 is rotatably connected.

The spacing adjusting rod 600 has a structure in which the other end is penetrated by the reinforcing bar 70 for connecting the slab, and the other end is supported by the reinforcing bar 70 for connecting the slab.

For this reason, the spacing control rod 600 is a steel bulkhead 50 on the gusset plate 100 coupled to the gusset plate 100 coupled to the gusset plate 100 on one side during the lifting operation for coupling the steel bulkhead 50 to the gusset plate 100 . ), after pre-combining the other end of the steel bulkhead 50 to the gusset plate 100 coupled to the girder 10 side on the other side in order to couple the edge of one end of the rim, the spacing adjusting rod coupled to the lifting ring 57 One end of the steel bulkhead 50 provided with the lifting ring 57 in a state in which the 600 is supported on the reinforcing bar 70 for slab connection provided on the upper side of the girder 10 on the other side, the gusset provided on the side of the girder 10 on one side After lifting so as to be in close contact with the plate 100, the gusset plate 100 and the steel bulkhead 50 are bolted together.

That is, by slowly and stably lifting one end of the steel bulkhead 50 connected to one end and the lifting ring 57 while supporting the other end of the spacing adjusting rod 600 to the reinforcing bar 70 for connecting the slab, the steel material One end of the partition wall 50 can be stably brought close to the gusset plate 100 side.

The spacing adjusting rod 600 may further include a support member to prevent separation from the reinforcing bar 70 for connecting the slab from the upper side of the opposite girder 10, and the support member has the gap as shown in FIG. A support rod 610 penetrating in the longitudinal direction may be provided at the other end of the adjustment rod 600 , or the spacing adjustment rod 600 may be stably supported during a lifting operation using a chain block 620 .

Thereafter, during the lifting operation for coupling the steel bulkhead 50 to the gusset plate 100, the end of the steel bulkhead 50 is stably brought close to the gusset plate 100 side, and then the adjacent gusset plate 100 of It has the advantage of being able to bolt the web 55 portion of the steel bulkhead 50 to the connection surface 120 with a high tension bolt.

Next, the other opposite end of the steel bulkhead 50 is brought into close contact with the gusset plate 100 provided on the side of the girder 10 located on the opposite side, and the connecting surface 120 and the web 55 of the steel bulkhead 50 are closed. By bolting, it is possible to truss-couple the girders 10 adjacent to each other using the steel bulkhead 50 .

5 and 6, the gusset plate 100 is coupled such that the support surface 410 is fixed to the connection surface 120 with a bolt, and the bent surface 420 is the support surface A nut member 430 bent from the surface 410 and provided to protrude and fixed to the outside of the curved surface 420 , and the coupling surface 110 of the gusset plate 100 having an end fastened to the nut member 430 . ) and the connecting bracket 400 made of a fixing bolt 440 fastened to press the mold 20 interposed between the bent surface 420 is further provided.

The connection bracket 400 is formed in an “L” shape, a support surface 410 is fixed to the connection surface 120 , and a bent surface 420 is formed using a nut member 430 and a fixing bolt 440 . Thus, the function of attaching the form 20 to the coupling surface 110 side is performed.

The nut member 430 is coupled to the bent surface 420 so as to be fixed by welding or the like, and the form 20 according to the rotation direction of the fixing bolt 440 during the fastening operation with the fixing bolt 440 . It is possible to selectively adjust the adhesion or release state between the and the coupling surface 110 .

For this reason, since the form 20 can be brought into close contact with the coupling surface 110 of the gusset plate 100 by the fastening force when the nut member 430 and the fixing bolt 440 are fastened, the form 20 is in the Even if the weight of the concrete to be poured is transferred, it has the advantage of preventing the deformation of the formwork 20 .

Referring to FIG. 7 , a cushion member 700 coupled to protrude from left and right inner surfaces facing each other of the cutout slot 210 and having its own elastic force is further provided.

The cushion member 700 is formed with an inclined surface 710 having an inclination angle such that the thickness becomes thinner toward the inlet side of the cut-out slot 210 .

The cushion member 700 can reduce the impact noise generated while the web 55 of the steel bulkhead 50 enters into the cutout slot 210, and after the construction of the steel bulkhead 50 is completed It has the advantage of being able to improve product durability by buffering vibration energy transmitted from the outside through the girder 10 to the steel bulkhead 50 and the gusset plate 100 side.

The cushion member 700 has a material having its own elasticity, and for example, a cushioning material such as rubber is used.

8A, the present invention is disposed inside the girder 10, disposed between the connecting reinforcing bars 15, and the end is welded to the coupling surface 110 of the gusset plate 100 in a surface contact method. A connecting bar 17 is further provided.

The connecting bar 17 is formed in the shape of a pipe in which a hollow 17a is formed in a "□" or "○" shape.

The connecting bar 17 is disposed in the space between the connecting reinforcing bars 15 and the end is in contact with the inner side (in the direction of the form) of the coupling surface 110 of the gusset plate in a surface contact manner, and the end of the connecting bar 17 and The inner side of the coupling surface 110 has a structure that is integrally coupled by welding.

8B is a view showing a modified example of the connecting bar, in which the connecting bar 17 of the modified example is formed in a circular bar shape, and the end is in surface contact with the coupling surface 110 of the gusset plate 100 and is integrally formed by welding. it will be combined

In the present invention having such a configuration, the connecting reinforcing bar 15 is connected to the gusset plate 100 by welding in the process of forming the formwork 20 for the girder, and the connecting plate 200 is coupled to the upper side of the connecting surface 120 . After coupling to the surface 110, the seating plate 300 on the lower side of the connection surface 120 is integrally coupled to the lower portion of the coupling surface 110, and then to the connection surface 120 of the gusset plate 100. The web 55 of the steel bulkhead 50 is brought into close contact with each other.

Due to this, the fastening operation is made while the lower flange 54 of the steel bulkhead 50 is seated on the seating plate 300 before the fastening of the bolt during the construction work of the steel bulkhead 50, so that the steel material It has the advantage of being able to prevent a fall accident of the partition wall 50 .

In the process of joining the steel bulkhead 50, the web 55 is inserted into the cutout slot 210 of the connecting plate 200 while the steel bulkhead 50 is lowered from the upper side to the lower side through the lifting operation. The cut-out portion 56 does not interfere with the connection plate 200 in the process of slidingly coupled and seating the upper flange 52 of the steel bulkhead 50 on the upper side of the connection plate 200 .

Subsequently, in the assembly process of the steel bulkhead 50, after the upper flange 52 is seated on the upper side of the connection plate 200, the first connection hole 205 and the first flange hole 52a are penetrated with a bolt. After fastening with bolts and nuts, the second connection hole 305 of the seating plate 300 on which the lower flange 54 of the steel bulkhead 50 is seated and the second flange hole 54a of the lower flange 54 are seated. ) through the bolting process of penetrating the bolt and fastening with a nut to the end of the penetrating bolt, the steel bulkhead 50 is brought close to the gusset plate 100 via the connecting plate 200 and the seating plate 300 .

Thereafter, in a state in which the connection surface 120 and the web 55 are in close contact, the coupling hole 122 and the third flange hole 55a are penetrated with a high tension bolt, and the end of the penetrating high tension bolt is fastened with a nut. The end edge of the steel bulkhead 50 is coupled to the gusset plate 100 .

Due to this, the present invention supports the end edge of the steel bulkhead 50 with the connecting plate 200 and the seating plate 300 so that the load of the steel bulkhead 50 is concentrated on the connecting surface 120 can be dispersed. , has the advantage of improving product durability by dispersing the load transmitted from the outside and the self-load of the steel bulkhead 50 .

On the other hand, the form 20 for the girder can be closely attached to the gusset plate 100 and the pressing force can be maintained, and for this purpose, the support surface 410 of the connection bracket 400 is bolted to the connection surface 120 . After the form 20 is interposed between the bending surface 420 and the engaging surface 110 of the connecting bracket 400 , the engaging surface 110 of the gusset plate 100 and the connecting bracket 400 . ) using the fastening force of the nut member 430 and the fixing bolt 440 for coupling the bent surface 420 of the ) to press and close the bent surface 420 toward the edge of the mold 20, and the mold 20 ), the connection bracket 400 is removed together so that the steel bulkhead 50 can be installed.

Accordingly, the rim of the formwork 20 is coupled to be in close contact between the coupling surface 110 and the bent surface 420, and the rim of the formwork 20 due to the load of concrete during the concrete pouring process in the formwork 20. It has the advantage of being able to prevent the mortar from flowing out to the coupling surface 110 side of the gusset plate 100 out of the form 20 by preventing the deformation.

In addition, in the process of lifting the above-described steel bulkhead 50 between the girders 10 to be close to the gusset plate 100 side, the lifting ring 57 and the spacing adjusting rod 600 are used and located on the opposite side Lifting one end of the steel bulkhead 50 close to the side of the girder 10 while supporting the other end of the spacing adjusting rod 600 in the reinforcing bar 70 for slab connection provided on the upper side of the other girder 10 Since it can be performed, it has the advantage of compensating for the deformation of the girder 10 during construction of the steel bulkhead 50 .

Therefore, the construction work of the steel bulkhead 50 connecting the girders 10 of one side and the other side of the present invention is a steel bulkhead 50 in the process in which the edge of one end of the steel bulkhead 50 is in close contact with the gusset plate 100. The upper flange 52 edge of the steel bulkhead 50 is seated on the upper side of the connection plate 200 as the web 55 portion of the connection plate 200 enters the incision slot 210 of the connection plate 200 in the downward direction. In addition, since the lower flange 54 of the steel bulkhead 50 is seated on the upper side of the seating plate 300 , the web 55 portion of the steel bulkhead 50 is connected to the connecting surface 120 of the gusset plate 100 . ) can be stably supported at one end of the steel bulkhead 50 in the process of fastening to the high tension bolt to facilitate the connection of the steel bulkhead 50, and the steel bulkhead 50 in the cutout slot 210. As the portion of the web 55 of the entered state is combined, it has a useful advantage of suppressing the left and right flow of the steel bulkhead 50 .

In addition, in the present invention, the support surface 410 of the connection bracket 400 is fixed to the connection surface 120 , and between the coupling surface 110 of the gusset plate 100 and the bent surface 420 of the connection bracket 400 . The fixing bolt 440 is fastened to the mold 20 through the nut member 430 integrally coupled to the bending surface 420 with the form 20 interposed therebetween, and the fixing bolt 440 and the nut member 430. By firmly pressing and supporting the edge of the formwork 20 with the fastening force of It has the advantage of being able to prevent the mortar from flowing out through the formwork 20 .

And in the present invention, one end of the steel bulkhead 50 is stably connected to the plate ( 200) and has the advantage of being able to safely and easily lift the steel bulkhead 50 for coupling with the gusset plate 100 while seated on the seating plate 300 .

As such, although specific embodiments have been described in the detailed description of the present invention, various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention is not limited to the above-described embodiment, but should be defined by the claims and equivalents as well as the claims to be described later.

That is, the present invention described above is not limited to the specific preferred embodiments described above, and anyone with ordinary skill in the art to which the invention pertains without departing from the gist of the present invention as claimed in the claims Of course, various modifications can be made, and such modifications are within the scope of the claims.

10: girder 15: connecting reinforcing bar
15a: male thread 17: connecting bar
17a: hollow 20: formwork
50: steel bulkhead 52: upper flange
52a: first flange hole 54: lower flange
54a: second flange hole 55: web
55a: third flange hole 56: cutout
57: lifting hook 70: reinforcing bar for slab connection
100: gusset plate 110: coupling surface
120: connection surface 122: coupling hole
200: connection plate 205: first connection hole
210: cut slot 300: seating plate
305: second connection hole 400: connection bracket
410: support surface 420: bent surface
430: nut member 440: fixing bolt
600: gap adjustment rod 700: cushion member
710: slope

Claims (6)

a gusset plate 100 in which a steel bulkhead 50, which is a section steel, is respectively coupled to opposite surfaces of the girders 10 spaced apart from each other; a steel bulkhead 50 connected in a transverse direction facing the gusset plate 100; and a connection bracket 400 for adhering the formwork 20 for the girder to the coupling surface 110 side of the gusset plate 100;
The gusset plate 100 is formed so as to protrude from the coupling surface 110, the connection surface 120 is bolted to the web 55 portion of the steel bulkhead 50, the upper side of the connection surface (120) Arranged and coupled to the coupling surface 110, the upper flange 52 of the steel bulkhead 50 is seated and bolted, and a cut-out slot 210 is formed so that the web 55 of the steel bulkhead 50 is fitted. A connection plate 200 and a seating plate 300 disposed below the connection surface 120, coupled to the coupling surface 110, and the lower flange 54 of the steel bulkhead 50 is seated and bolted together. become,
The steel bulkhead 50 is provided with a cutout 56 formed at the end of the lower flange 54 of the steel bulkhead 50 to prevent interference with the connection plate 200,
The connection bracket 400 includes a support surface 410 coupled to the connection surface 120 to be fixed with a bolt, a bent surface 420 bent from the support surface 410 , and the bent surface 420 . A nut member 430 that protrudes outward and is provided to be fixed, and a die 20 fastened to the nut member 430 and having an end interposed between the engaging surface 110 and the bent surface 420 of the gusset plate 100 . ), a steel bulkhead connection structure comprising a fixing bolt 440 for pressing. The method according to claim 1,
The steel bulkhead 50 is a lifting ring 57 provided above the upper flange 52 of the steel bulkhead 50, and
Steel bulkhead connection, characterized in that one end is connected to the lifting ring (57) and the other end is further provided with a spacing adjusting rod (600) supported by the reinforcing bar (70) for slab connection provided on the upper side of the girder (10) struct. The method according to claim 1,
The cut-out slot 210 is a steel bulkhead connection structure, characterized in that it is formed in an eccentric position from the top of the center of the connection plate (200). The method according to claim 1,
A steel bulkhead connecting structure, characterized in that the cushion member 700 is coupled to protrude from the left and right inner surfaces facing each other of the cut-out slot 210, respectively, and has its own elastic force. 5. The method according to claim 4,
The cushion member 700 is a steel bulkhead connecting structure, characterized in that each inclined surface 710 having an inclination angle is formed so that the thickness becomes thinner toward the entrance side of the cut-out slot 210 . The method according to claim 1,
It is disposed in the interior of the girder 10 and further comprising a connecting bar 17 formed in a “□” shape or a circular cross section so that the end is welded to the coupling surface 110 of the gusset plate 100 in a surface contact manner. A steel bulkhead connection structure, characterized in that it.

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