KR100932105B1 - Steel roof frame gider and temporary bridge using the same and method constructing thereof - Google Patents

Abstract

PURPOSE: A lining girder, and a temporary structure and a construction method thereof are provided to increase plane strength of a mold girder, reduce the number of installed lining plates, and reduce the cost and period of a temporary structure construction. CONSTITUTION: A lining girder(100) comprises a pair of steel plates(110) and a lining part(120). The steel plate has a web(113) connecting between an upper flange(111) and a lower flange(112), and horizontally supports both side ends of the lining part. The lining part has a pair of side plates(121) in left and right, and a flat plate(122). The pair of side plates are integrally coupled each other. The flat plate integrally connects the pair of side plates.

Description

Steel Roof Frame Gider and Temporary Bridge Using the Same and Method Constructing Thereof}

The present invention relates to a perforated girder, a temporary structure using the same and a construction method thereof, and more particularly, to increase the cross-sectional stiffness of the mold girder to replace the function of the heavy and expensive perforated plate to reduce the total number of installation of the perforated plate installed in the temporary structure In addition, the present invention relates to a multi-holer girder, a temporary structure using the same, and a construction method thereof, which can reduce the top plate load of the temporary structure, reduce the construction period and the construction cost required for the construction of the temporary structure by reducing the amount of raw materials used.

Generally, temporary bridges and temporary structures are structures installed for the purpose of construction work bridges, bypass bridges, emergency repairs, and emergency military bridges, and require rapid construction and safety.

Currently, temporary structures such as temporary bridges are used in a variety of forms, ranging from simple bridges with a span of 10m to bridges of 30m or more, and the most commonly used girder bridges are used for constructing cast beams by steel girders and using perforated plates as floor plates.

As shown in FIG. 1A, the upper structure of a temporary bridge, which is a conventional temporary structure, has a mold girder 10 that is in charge of dynamic support, and a double plate 20 that transmits lubricating and live loads such as vehicle load to the mold girder 20. )

Since the mold girder 10 uses a rolled steel product manufactured in a factory as it is, or uses a steel beam composed of an upper flange, an abdomen, and a lower flange separately, a large advantage can be exhibited in the construction of a small bridge for rapid construction. do.

Accordingly, in recent years, in the case of the mold girder, technology development has been actively carried out to be used for more long-standing temporary structures such as a method of increasing the rigidity of the mold girder by using prestressing and an angle (channel member).

For example, in the crosslinking construction method called the ATOM method as shown in the left figure of FIG. 1B, in the case of the mold girder 10 supporting the perforated plate from the bottom, the steel beam having an I-shaped cross section and the steel bar spaced below the steel beam (31, tension member or tension member) is to be installed by the fixing device 32, and after tensioning the steel rod to fix both ends to the fixing device to generate a kind of upward force in the steel beam to eventually improve the overall cross-sectional rigidity of the mold girder The process is known.

In addition, in the asymmetrical steel beam as shown in the middle view of FIG. 1B, in the case of the mold girder 10 supporting the perforated plate from the bottom, the steel beam of the I-shaped cross section and the angle of the upper and / or lower portion of the abdomen of the steel beam By further mounting the folding member 33, such as a channel member, a technique is known in which the overall cross-sectional rigidity of the mold girder is eventually increased by using an increase in the eccentric effect by the cross-sectional neutral axis.

In addition, in the crosslinking construction method referred to as the DHB method as shown in the right drawing of FIG. 1B, in the case of the mold girder 10 supporting the perforated plate from the bottom, the steel beam of the I-type cross section and the lower portion of the steel beam A technique is known in which the height of the I-shaped steel beam 34 is further fixed to artificially increase the height of the entire mold girder so that the overall cross-sectional rigidity of the mold girder is also enhanced.

In addition, in the recent crosslinking construction method called TALL-BEAM method as shown in Fig. 1c, in particular, in the case of the mold girder 10 supporting the perforated plate at the bottom, the I-shaped steel beam 35 having a small height is formed on the upper surface thereof. It is further installed, but it is also known that a method for improving the overall stiffness of the mold girder by installing the perforated plate on both sides of the upper part of the mold girder on both sides of the I-beam steel beam.

However, in the case of the I-type steel beam installed by the TALL-BEAM method, although it functions as a member for the cross-section stiffness of the mold girder, but also plays a role of the perforated plate, it is also necessary to reduce the total number of installed perforated plates installed in the temporary structure. It was somewhat limited.

However, despite efforts to develop technologies to increase the cross-section stiffness of the mold girder, the use of the mold girder as a rolled steel product is necessary for rapid construction, especially in temporary constructions for temporary bridges. There was a problem that there is a structural limitation, and in particular, due to the characteristics of the temporary structure, the mold girder and the perforated plate are unattached to each other, so that the perforated plate acts only as a kind of load on the mold girder, so that the sectional stiffness of the mold girder There was a problem that only adverse effects.

That is, in a temporary bridge using a mold girder, a very heavy perforated plate acts as a simple load increasing factor, resulting in a structurally disadvantageous structure, and such a mold girder has a small cross-sectional rigidity and a large number of installations of the perforated plate. It acts as a factor to increase the cost of construction, and if the number of installation of the perforated plate is increased, the construction period for constructing it is lengthened, and it causes a problem of increasing the top plate load of the temporary structure.

In addition, in the case of the conventional temporary structure, the number of installation of the bottom vent installed in the lower part of the mold girder is also increased to transfer the load transferred to the mold girder to the ground to increase the construction cost of the temporary structure as well as to shorten the construction period There was a limit.

In addition, in the case of the conventional temporary structure, there is a limit to secure a sufficient passage area by increasing the passage surface height between the perforated plate and the river water surface while securing sufficient die space, thereby causing a natural disaster due to flooding during summer flooding. there was.

Accordingly, the present invention is to solve the above problems, the purpose is to increase the cross-sectional rigidity of the mold girder while replacing the function of the heavy and expensive perforated plate while reducing the total number of installation of the perforated plate installed in the temporary structure temporary construction The purpose is to provide a multi-layer girder that can reduce the top plate load and reduce the construction period and construction cost required to construct the temporary structure by reducing the amount of raw materials used.

In addition, another object of the present invention is to reduce the top plate load while reducing the total number of installation of the perforated plate by providing a top plate together with the existing perforated plate by using a perforated girder that can replace the heavy and expensive perforated plate with increased cross-sectional stiffness In order to reduce construction period and construction cost by reducing the consumption of raw materials, and to provide a temporary structure and a construction method using a hollow hole girder that can secure a sufficient space and a transit area.

As a specific means for achieving the above object, the present invention is a pair of parallel steel plate having an upper flange, the abdomen and the lower flange; A side plate coupled to the upper surface of the upper flange of the 'C' shaped steel on the upper surface of the upper flange to expose a portion of the upper surface of the upper flange on the parallel pair of steel plates, and the upper side of the pair of side plates facing each other. A study unit assembled with the pair of steel plates so as to have a girder structure having a flat plate having a flat plate connected downwardly integrally therebetween; It includes a perforated girder comprising a.

Preferably, the apparatus further includes at least one reinforcing part connecting between the pair of steel plates and the multi-holer girder, wherein the reinforcing part is coupled to an upper end of the flat plate, and is inclined downwardly to the pair of steel plates to lower the flange. Or a lower end coupled to the abdomen and continuous in the longitudinal direction of the plate.

Preferably, the reinforcing part is provided with a pair of first reinforcing panels extending inclined toward the pair of steel plates, the bottom of which is coupled to the lower flange, the upper end of the pair of re-reinforcing panels of the central area of the lower plate In one point or two points are combined.

Preferably, the reinforcing part includes at least one reinforcing channel provided on the lower surface of the flat plate, and includes a pair of second reinforcing panels extending inclined toward the pair of steel plates and having a lower end coupled to the lower flange or the abdomen. The upper end of the pair of second reinforcement panels is coupled to an arbitrary position between the boundary region between the reinforcement channel and the flat plate and the lowest portion of the reinforcement channel.

Preferably, the plurality of vent holes are provided with a plurality of vertical ribs extending a predetermined length from both ends of the horizontal plate directly below, between a pair of side plates facing each other open flat plate.

More preferably, the reinforcing part includes a pair of third reinforcing panels extending inclined toward the pair of steel plates, and having a lower end coupled to the lower flange or the abdomen, wherein the pair of third reinforcing panels are provided with the vertical ribs. The upper end is coupled at an arbitrary position between the boundary region between the plates and the lowest part of the vertical rib.

Preferably, the vent hole includes a side plate in which a lower horizontal surface coupled with the upper flange of the steel plate extends in the direction of the girder from the lower end of the vertical surface.

Preferably, the vent hole includes a side plate in which a lower horizontal plane coupled with the upper flange of the steel plate extends outward from the lower end of the vertical plane.

In addition, the present invention is a temporary structure that is constructed on a plurality of support complements that is fixed to the lower end on the foundation base, a multi-pore girder according to any one of claims 1 to 4; A perforated girder comprising a perforated plate disposed between the pair of perforated girders arranged side by side at a predetermined distance from each other so that both ends are mounted on a seating surface formed on the outside of the perforated part to have the same horizontal plane as the flat plate It provides a temporary structure used.

Preferably, the vent hole includes a side plate in which a lower horizontal surface coupled with the upper flange of the steel plate extends in the direction of the girder from the lower end of the vertical surface.

Preferably, the vent hole includes a side plate in which a lower horizontal plane coupled with the upper flange of the steel plate extends outward from the lower end of the vertical plane.

In addition, the present invention provides a method for constructing a temporary structure on a plurality of support beams, the lower end of which is fixed to the foundation base, comprising: providing a plurality of double hole girder mounted on the support beams; And seating and installing the perforated plate to correspond to the upper surface of the perforated girder for each of the plurality of perforated girder, and providing the perforated girder includes arranging a pair of steel plates having an abdomen between an upper flange and a lower flange. And a side plate coupled to an upper surface of the upper flange to form a seating surface on which an end of the perforated plate is raised on an outer side of the upper end of the steel plate, having a perforated part connecting the side plates facing each other as a flat plate. The lower end of the reinforcing portion is coupled to the lower end of the pair of steel plates to be inclined downward downward to the lower flange side of the pair of coupled to the lower flange or abdomen, the step of installing the seating plate is fixed to each other to have the same horizontal plane as the plate Place the perforated plate between a pair of perforated girders arranged side by side with a gap W is on the receiving surface formed on the outer side of the clothing the end of the study bokgongpan provide a bridge construction method using a bokgong girder, characterized by Joined.

Preferably, the step of providing the multi-holer girder is coupled to the lower flange or the abdomen of the lower pair of the first reinforcing panel extending inclined toward the pair of steel plate side, the upper end of the pair of re-reinforcement panel of the Engage at one or two points in the center area of the bottom of the plate.

Preferably, the step of providing the multi-holer girder is coupled to the lower flange or the abdomen of the lower pair of the second reinforcement panel extending inclined toward the pair of steel plate side, the upper end of the pair of second reinforcement panel It is coupled to an arbitrary position between the boundary region between the reinforcing channel and the plate provided on the lower surface of the plate and the lowest portion of the reinforcing channel.

Preferably, the plurality of vent holes are provided with a plurality of vertical ribs extending a predetermined length from both ends of the horizontal plate directly below, between a pair of side plates facing each other open flat plate.

Preferably, the step of providing the multi-holer girder is coupled to the lower flange or the abdomen of the pair of third reinforcement panel inclined toward the pair of steel plate side, the top of the pair of third reinforcement panel The upper end is coupled to an arbitrary position between the boundary area between the vertical rib and the horizontal plate and the lowest part of the vertical rib.

Preferably, the vent hole includes a side plate in which the lower horizontal plane coupled to the upper plan of the steel plate extends in the girder center direction from the lower end of the vertical plane.

Preferably, the vent hole includes a side plate in which the lower horizontal surface coupled with the upper flange of the steel plate extends outward from the lower end of the vertical surface.

According to the present invention, the steel plate and the perforated part are combined by providing the perforated part on a pair of steel plates facing each other to have a cross-section open to the bottom while forming a seating surface on which the end of the perforated plate is raised on the steel plate. By increasing the forming height of the girder to increase the cross-sectional rigidity.

In addition, by providing a reinforcing part connecting the pair of steel plate and the perforated part inclined between the flat plate of the perforated part and the lower flange or the abdomen of the steel plate obliquely by the perforated part provided on the steel plate facing each other By replacing the function of the perforated plate, it is possible to reduce the total number of installations of the perforated plate installed on the temporary bridge, thereby reducing the top plate load of the temporary structure, and significantly reducing the amount of raw materials used during the construction of the temporary structure. It can shorten and reduce construction cost.

In addition, by installing a perforated plate between each of the perforated girders facing each other such that the upper surface of the perforated plate, the end of which is mounted on the seating surface formed outside the perforated part, is the same as the top plate of the perforated part, the temporary structure by the perforated girder with increased cross-sectional rigidity It can replace the heavy and expensive hollow plate that forms the upper plate, which can reduce the total number of installation of the double plate and reduce the load of the plate, and reduce the construction period and construction cost by reducing raw material usage.

In addition, it is possible to secure a sufficient space for the construction of the temporary structure constructed in the river by using the perforated girder while increasing the permeate surface height between the perforated plate and the surface of the river, thereby securing sufficient permeate area. Ingress and natural disasters can be prevented and river flow can be smoothed.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

First Embodiment

Figure 2 shows a multi-hole girder according to a first embodiment of the present invention, a) is an exploded perspective view, b) is a longitudinal cross-sectional view, c) is an assembly view.

As shown in Fig. 2 (a) to (c), the double hole girder 100 of the present invention may have a double plate function that is part of the upper plate of the temporary structure while performing a function of supporting the upper plate structure of the temporary bridge that is a temporary structure It includes a steel plate 110 and the vent hole 120 to be.

The steel plate 110 is made of a rolled section of the I-shaped cross-section having an abdomen 113 connecting between the upper flange 111 and the lower flange 112, but is not limited to this by cutting and welding the steel sheet Can be done.

The steel plate 110 is not limited to the cross-sectional shape of the I-type, it may be provided in a cross-sectional shape of various forms having a horizontal upper flange 111 so that the perforations 120 can be raised and coupled.

The steel plate 110 is arranged in pairs in parallel to each other in the width direction of the temporary structure so that the left and right ends of the vent hole 120 can be stably horizontally supported as an upper structure, and the steel plate 110 is hypothetical. It is a mold girder structure that is installed on a plurality of vents installed perpendicular to the ground when the structure is distributed to transmit the load of the upper plate to the vent side.

The perforation part 120 includes a pair of left and right side plates 121 which are integrally coupled to each other, and a flat plate 122 which integrally connects them.

The upper side plate 121 is formed in each upper region of the pair of steel plate 110 to form a seating surface (A) of a predetermined size on which the end of the perforated plate (100a) forming the upper plate structure of the temporary structure is raised Partially coupled to only a portion of the upper surface of the flange 111, the side of the receiving plate 90 is seated on the seating surface (A) is interviewed.

The plate 122 is to form a top plate of the open hole girder 100 to the bottom by connecting between a pair of side plates 121 provided on each of a pair of steel plate 110 facing each other.

The flat plate 122 has the same height as the top surface of the double hole plate 90 provided on the left and right sides of the double hole girder 100 to form a top plate of the temporary structure together with the double hole plate, the surface of the flat plate 122 The protrusions or patterns may be provided in various shapes so that the vehicle passing through the temporary structure does not slip, thereby generating frictional resistance.

Accordingly, the side plate portion 121 is coupled to form a seating surface on the upper end of the steel plate 110 and at the same time increase the overall height of the double hole girder 100 together with the steel plate 110, the cross section of the double hole girder Since the difference in moment is increased, it is possible to increase the stiffness of the cross section of the double hole girder 100.

That is, the perforated girder 100 is formed in a box shape of the cross-section opened downward by the coupling between the left and right pair of steel plate 110 and the perforated portion 120, buckling for longer than the simple I-shaped cross section, It is advantageous to the torsion, it can be expected that the cross-sectional height is increased by the vent hole 120, the cross-sectional rigidity is also very large.

Here, the side plate 121, as shown in Figure 2 (a) (b) (c), the upper flange 111 to form a seating surface (A) that is exposed to the outer surface of the upper surface one side of the upper flange 111 The lower horizontal surface 121a coupled to the other surface area of the upper surface of the bolt 115 and the nut 116 by a fastening method or a welding method, and a vertical surface 121b extending from the end of the horizontal surface 121 by a predetermined height. And an upper horizontal surface 121c that is bent and extended in a direction perpendicular to the end of the vertical surface 121b and coupled by a fastening method or a welding method using the bolt 115 and the nut 116 to be connected to the end of the flat plate. .

The side plate 121 is not covered by the lower horizontal surface by being provided in parallel with the upper horizontal surface is provided with a lower horizontal surface 121a coupled to the steel plate 110 extends from the lower end of the vertical surface 121b to the girder center. It is possible to form a seating surface (A) in which the end of the perforated plate 90 is raised on the upper surface of the upper flange 111 to be exposed to the outside.

Meanwhile, at least one reinforcement 130 may be provided between the pair of steel plates 110 and the perforation part 120 to reinforce the cross-sectional structure of the perforated girder 100 having a cross section open downward. have.

The reinforcement portion 130 is integrally coupled to the upper end of the lower portion of the flat plate 122, and extends downwardly inclined at a predetermined angle toward the pair of steel plates, the lower flange 112 or the abdomen 113, the lower end integrally It is provided with a pair of reinforcing panels to be coupled.

The reinforcement panel is shown and described as being provided with a plate member that is continuous in the longitudinal direction of the flat plate 122, but is not limited thereto. The reinforcement panel may be divided or spaced apart in the longitudinal direction of the flat plate 122.

In addition, when the reinforcing panel is provided as a plate member, it is preferable to use a plate material having a relatively thin thickness than the member forming the steel plate and the perforated portion so as to reduce the overall load of the perforated girder and the temporary structure having the same. .

The lower end of the first reinforcing panel 131 is illustrated and described as being integrally coupled to the end of the lower flange 112, but is not limited thereto. The abdomen and the abdomen may include a boundary area between the lower flange and the abdomen. It can be integrally coupled to any area between the lower flange ends.

Accordingly, the force applied to the flat plate 122 by the reinforcing part 120 which obliquely connects the lower flange 112 and the flat plate 122 of the steel plate 110 is the pair of steel plates 110. Since it is distributed to the lower flange side of the widthwise maximum deformation amount of the perforated girder 100 can be expected to be smaller than the maximum widthwise deformation amount of the perforated girder without a reinforcing portion.

In addition, the amount of deformation added to the longitudinal deformation of the multi-pore girder by Poisson's ratio can also be smaller than in the prior art.

As shown in FIG. 2 (a) (b) (c), the reinforcement part 130 extends inclined downward toward the pair of steel plates 110 so as to be lowered on the lower flange 112 or the abdomen 113. It includes a pair of first reinforcing panel 131 is coupled, the upper end of the pair of first reinforcing panel 131 may be coupled at one or two points to the central area of the lower plate 122. .

Second Embodiment

Figure 3 is a longitudinal sectional view showing a multi-hole girder according to a second embodiment of the present invention.

As shown in FIG. 3, the reinforcement part 130a provided in the multi-holster girder 100a provided in the second embodiment of the present invention is provided on the lower surface of the flat plate 122 in the longitudinal direction of the flat plate 122. At least one reinforcing channel (139) continuous along the length of the pair of steel plate 110 is inclined downwardly toward the lower flange 112 or the abdomen 113 is coupled to the bottom of the pair of agents It includes a second reinforcement panel 132, the upper end of the pair of second reinforcement panel 132 is integrally coupled to the reinforcement channel (139).

Here, the pair of second reinforcing channel 132 is shown as a solid line in Figure 3, the upper end is coupled to the bottom of the reinforcing channel 139, or as shown in dashed line in Figure 3, the pair The second reinforcing channel 132a may be coupled to the boundary area between the reinforcing channel 139 and the flat plate 122, but is not limited thereto. The boundary area between the reinforcing channel 139 and the flat plate 122 and the reinforcing channel may be combined. The top may be coupled at any position between the lowest portions of the channel 139.

At this time, the second reinforcement panel 132 is preferably coupled to the upper end is coupled to the reinforcing channel 139 provided in the central region of the flat plate (122).

Accordingly, the force applied to the flat plate 122 is distributed to the lower flange side of the pair of steel plates 110 through the second reinforcing panels 132 and 132a which obliquely connect the reinforcing channel and the steel plate 110. It is to be able to reduce the maximum deformation in the width direction of the double hole girder (100a).

In addition, the amount of deformation added to the longitudinal deformation of the multi-pore girder by Poisson's ratio can also be smaller than in the prior art.

In addition, by increasing the rigid structure of the flat plate 122 constituting the upper plate of the temporary structure by the reinforcing channel 139 is provided integrally on the lower surface of the flat plate 122 can improve the durability of the multi-pore girder.

Although the reinforcing channel 139 is formed and described as a channel member on a substantially 'a' cross-section, it is not limited thereto and may be provided as a hollow or solid member of a polygonal cross-section.

Third Embodiment

Figure 4 is a longitudinal sectional view showing a multi-hole girder according to a third embodiment of the present invention.

As shown in FIG. 4, the vent hole 120b provided in the vent hole girder 100b of the present invention has an upper flange to form a seating surface A which is exposed to the outside of one side of the upper surface of the upper flange 111. The lower horizontal surface 121a 'coupled to the fastening method or the welding method using the bolt 115 and the nut 116 to one side of the upper surface of the 111, and a vertical surface extending a predetermined height from the end of the horizontal surface 121 The upper horizontal surface 121c joined by the fastening method or the welding method using the bolt 115 and the nut 116 to be bent in an orthogonal direction from the end of the 121b so as to be connected to the end of the plate faced in opposite directions. It includes a side plate 121 'is provided to.

The side plate 121 'has a lower horizontal surface 121a' coupled to the steel plate 110 extending outward from the lower end of the vertical surface 121b to be provided in a direction opposite to the upper horizontal surface so as to be opposite to the upper horizontal surface. It is possible to form a seating surface (A) in which the end of the perforated plate 90 is raised on the upper portion of the upper flange 111 covered by.

Here, when the seating surface (A) is formed on the upper portion of the upper flange 111 covered by the lower horizontal surface (121a), the worker is fastening work between the upper flange of the steel plate and the lower horizontal surface of the side plate when constructing a temporary structure And the welding operation can be performed more easily on the outside of the perforated girder to improve the work productivity. When the upper flange and the lower horizontal surface are fastened as bolts and nuts, the seating surface has direct contact between the perforated plate and the fastening member. It is preferable to have a pad member (not shown) to prevent the damage.

The reinforcement part 130 of the multi-hollow girder 100b according to the third embodiment is illustrated and described as being provided with a pair of first reinforcement channels 131 provided in the first embodiment, but the present invention is not limited thereto. It may be provided with a pair of second reinforcing panel 132 provided between the flat plate and the lower flange or the abdomen having.

Fourth Embodiment

5 is a longitudinal sectional view showing a multi-hole girder according to a fourth embodiment of the present invention.

As shown in FIG. 5, the vent hole 120c provided in the vent hole girder 100c of the present invention has a vertical rib 122a extending a predetermined length from both ends of the horizontal plate 122b to a lower portion thereof and opened downward. At least one plate 122 ′ is provided between a pair of side plates 121 facing each other by a fastening method or a welding method using a bolt and a nut.

When a plurality of flat plates 122 'are provided between a pair of side plates 121 facing each other, the vertical ribs 122a adjacent to each other are integrally coupled by a fastening method or a welding method using bolts and nuts. The outer vertical rib 122a is integrally coupled to the upper end of the side plate 121.

As shown in FIG. 5, the reinforcement part 130c of the multi-hollow girder 100c provided in the fourth embodiment is inclined downwardly toward the pair of steel plates 110 so that the lower flange 112 or the abdomen ( 113, a pair of third reinforcement panels 133 having a lower end coupled thereto, and an upper end of the pair of third reinforcement panels 133 is integrally formed with the vertical ribs 122a provided below the flat plate. Combined.

Here, the pair of third reinforcing channel 133 is coupled to the lower end of the vertical rib 122a as shown by a solid line in FIG. 5, or as shown by a dotted line in FIG. The pair of third reinforcement channels 133a may be coupled to the boundary area between the vertical ribs 122a and the horizontal plate 122b, but are not limited thereto, and the boundary area between the vertical ribs 122a and the horizontal plate 122b. And an upper end may be coupled to an arbitrary position between a lower portion of the vertical rib 122a.

At this time, the third reinforcement panel 133 is preferably connected to the upper end of the vertical rib provided in the central region of the flat plate (122 ').

A method of constructing a temporary structure using a multi-holer girder having the above-described configuration will be described.

According to a preferred embodiment of the present invention, a method of constructing a temporary structure is provided by providing a plurality of perforated girders 100 to mount a plurality of perforated girders 100 on a plurality of support beams having a lower end fixed to a base and vertically extending vertically. Step, the step of mounting the seating plate 90 so as to coincide with the upper surface of the hole hole girder every pair of adjacent hole hole girder 100 adjacent to each other.

That is, the step of providing the multi-holer girder 100, as shown in Figure 6 (a) to Figure 6 (e), facing each other a pair of steel plate 100 having an abdomen between the upper flange and the lower flange To be placed.

The side plates 121 are coupled to each other so that the top plate 112 of the upper flange 112 provided in the pair of steel plates 110 facing each other so as to be arranged in a unilateral arrangement, between the side plates 121 facing each other as a flat plate 122 By mounting the perforations 120 on the pair of steel plates it is possible to form a seating surface (A) in which the end of the perforated plate 90 is raised on the outer side of the upper end of the steel plate.

Subsequently, a lower end of the reinforcing part 120 having an upper end coupled to the lower part of the flat plate is inclined downwardly toward the lower flange or the abdominal side of the pair of steel plates 110 so as to have a lower end coupled to the lower flange or abdomen ( By having 130, the vertical load transmitted to the vent hole girder 100 is distributed to the lower flange or the abdomen side through the reinforcement.

And, when the end of the vent hole plate 90 is raised on the seating surface (A) formed on the outer side of the vent hole 120 is provided between a pair of vent hole girders arranged side by side at a predetermined interval, the upper surface of the vent hole The construction of the temporary structure 200 having a top plate capable of driving a vehicle while forming the same horizontal plane as the flat plate that is the upper surface of the double hole girder.

The upper surface of the perforated plate or the perforated girder constituting the upper plate of such a temporary structure may be packed or additionally installed a railing.

While the invention has been shown and described with respect to specific embodiments thereof, it will be appreciated that the invention can be varied and modified without departing from the spirit or scope of the invention as set forth in the claims below. It will be appreciated that those skilled in the art can easily know.

1 (a) to 1 (c) is a block diagram showing a conventional temporary structure.

2 is a view illustrating a double girder according to a first embodiment of the present invention.

a) is an exploded perspective view, b) is a longitudinal sectional view, and c) is an assembly view.

Figure 3 is a longitudinal sectional view showing a multi-hole girder according to a second embodiment of the present invention.

Figure 4 is a longitudinal sectional view showing a multi-hole girder according to a third embodiment of the present invention.

5 is a longitudinal sectional view showing a multi-hole girder according to a fourth embodiment of the present invention.

6 (a) to 6 (e) is a flow chart for constructing a temporary structure using a multi-hole girder according to an embodiment of the present invention.

7 is a perspective view showing a temporary structure using a multi-hole girder according to the present invention.

   Explanation of symbols on the main parts of the drawings

110: steel plate 111: upper flange

112: lower flange 113: abdomen

120: vent hole 121: side plate

122: flat plate 130: reinforcement

131: first reinforced panel 132: second reinforced panel

133: third reinforcement panel 139: reinforcement channel

90: double hole plate 100: double hole girder

200: temporary structure A: seating surface

Claims (18)

A pair of parallel steel plates having an upper flange, an abdomen and a lower flange; A side plate coupled to the upper surface of the upper flange of the 'C' shaped steel on the upper surface of the upper flange to expose a portion of the upper surface of the upper flange on the parallel pair of steel plates, and the upper side of the pair of side plates facing each other. A perforated part assembled with the pair of steel plates so as to have a girder structure having a flat plate having a cross-section open downwardly integrally therebetween; Perforated girder comprising a. The method of claim 1, Further comprising at least one reinforcement for connecting between the pair of steel plate and the hollow hole girder, The reinforcing part is coupled to the lower end of the flat plate, extends inclined downward to the pair of steel plate is coupled to the lower flange or the lower end coupled to the abdomen, characterized in that the continuous in the longitudinal direction of the flat plate. The method of claim 2, The reinforcing part extends inclined toward the pair of steel plates and is provided with a pair of first reinforcing panels coupled to a lower flange to the lower flange, and the upper end of the pair of reinforcing first reinforcing panels is positioned at a central area of the lower portion of the flat plate. Or a two-hole girder, characterized in that it is coupled at two points. The method of claim 2, The reinforcing part includes at least one reinforcing channel provided on the lower surface of the flat plate, and includes a pair of second reinforcing panels extending inclined toward the pair of steel plates and having a lower end coupled to the lower flange or the abdomen. And an upper end of the pair of second reinforcement panels is coupled to an arbitrary position between the boundary region between the reinforcement channel and the plate and the lowest portion of the reinforcement channel. The method according to claim 1 or 2, The vent hole is provided with a plurality of vertical ribs extending a predetermined length from both ends of the horizontal plate directly below, a plurality of space between the pair of side plates facing the open plate to each other downward. The method of claim 5, The reinforcing part includes a pair of third reinforcing panels extending inclined toward the pair of steel plates and having a lower end coupled to the lower flange or abdomen, wherein the pair of third reinforcing panels includes a boundary area between the vertical ribs and the horizontal plate. And an upper end coupled to an arbitrary position between a lower end of the vertical rib and the vertical rib. The method according to any one of claims 1 to 4, And the vent hole includes a side plate having a lower horizontal plane coupled to an upper flange of the steel plate extending in a girder center direction from a lower end of a vertical plane. The method according to any one of claims 1 to 4, The perforated part is a perforated girder, characterized in that the lower horizontal plane coupled to the upper flange of the steel plate includes a side plate extending in the girder outward direction from the lower end of the vertical plane. In the temporary structure is constructed on a plurality of support beams that the lower end is fixed to the foundation base, Multi-cavity girder according to any one of claims 1 to 4; A perforated girder comprising a perforated plate disposed between the pair of perforated girders arranged side by side at a predetermined distance from each other so that both ends are mounted on a seating surface formed on the outside of the perforated part to have the same horizontal plane as the flat plate Used temporary structure. The method of claim 9, And the vent hole includes a side plate in which a lower horizontal plane coupled to an upper flange of the steel plate extends in a girder center direction from a lower end of a vertical plane. The method of claim 9, The perforated part hypothesis structure using a perforated girder, characterized in that the lower horizontal surface coupled to the upper flange of the steel plate extends outward from the girder from the lower end of the vertical plane. In the method of constructing a temporary structure on a plurality of support complement that the lower end is fixed to the foundation base,  Providing a plurality of double hole girders mounted on the support complement; And seating and installing the perforated plate between the plurality of perforated girders so as to coincide with the upper surface of the perforated girder, The step of providing the ventilated girder comprises a pair of steel plates having an abdomen between the upper flange and the lower flange, the side plate coupled to the upper surface of the upper flange, connecting the side plates facing each other as a flat plate And a seating surface on which the end of the perforated plate is raised on the outer side of the upper end of the steel plate, and the lower end of the reinforcing part coupled to the lower end of the flat plate to be inclined downward toward the lower flange side of the pair of steel plates. Coupled to the flange or abdomen, In the step of installing the perforated plate, the perforated plate is disposed between the pair of perforated girders arranged side by side at a predetermined interval to have the same horizontal plane as the flat plate so that the end of the perforated plate on the seating surface formed on the outside of the perforated part Bridge construction method using a perforated girder characterized in that raised. The method of claim 12, The step of providing the hollow girder is coupled to the lower flange or the abdomen of the pair of the first reinforcing panel extending inclined toward the pair of steel plate side, the top of the pair of re-reinforcement panel of the lower plate Method of constructing a temporary structure using a multi-hole girder, characterized in that the coupling to one or two points in the central area. The method of claim 12, The step of providing the hollow girder is coupled to the lower flange or the abdomen of the pair of second reinforcement panel inclined toward the pair of steel plate side, and the top of the pair of second reinforcement panel to the bottom of the plate Method for constructing a temporary structure using a perforated girder having a perforated girder, characterized in that coupled to any position between the boundary region between the reinforcing channel and the plate provided on the surface and the lowest portion of the reinforcing channel. The method of claim 12, And a plurality of perforated parts having a plurality of vertical ribs extending a predetermined length from both ends of the horizontal plate directly below to each other between a pair of side plates facing the flat plate opened downward. The method of claim 15, The step of providing the hollow girder is coupled to the lower flange or the abdomen of the pair of the third reinforcement panel inclined toward the pair of steel plate side, the top of the pair of third reinforcement panel the vertical rib And a top end coupled to an arbitrary position between the boundary between the and horizontal plate and the lowest part of the vertical rib. The method according to any one of claims 12 to 15, Wherein the vent hole comprises a side plate that the lower horizontal plane coupled to the upper plan of the steel plate extends in the direction of the girder from the lower end of the vertical plane construction of the temporary structure using a girder girder. The method according to any one of claims 12 to 15, And the vent hole includes a side plate on which a lower horizontal plane coupled to an upper flange of the steel plate extends outward from the bottom end of the vertical plane to the outside of the girder.

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