KR100615471B1 - Steel plate girder bridge and it's construction method is using a steel composite horizontal beam - Google Patents

Abstract

The present invention is to install a steel cross beam frame in the inner point to increase the cross-sectional rigidity of the I-beam steel beam, and to increase the cross-section stiffness of the parent cement section by forming a concrete composite cross beam by curing the concrete in the steel cross beam frame The purpose of the present invention is to provide a steel plate girder bridge and its construction method using a composite concrete crossbeam to increase structural efficiency.

Steel plate girder bridge using a composite concrete crossbeam according to the present invention for achieving the above object is installed on the alternating and pier, the mold consisting of the upper, lower flange and the abdomen; A steel cross beam frame joined between the lower flange and the abdomen to the inner point of the mold by bolts or welding, and having a predetermined cross-sectional shape; A steel composite concrete cross beam filled with concrete in the steel cross beam frame; Characterized by consisting of a slab for curing the concrete on the upper surface of the upper flange of the mold.

In addition, the steel plate girder bridge construction method using a composite concrete crossbeam according to the present invention for achieving the above object comprises the steps of mounting a mold consisting of upper, lower flange and abdomen on the alternating and pier; Bolting or welding a steel cross beam frame having a lower cross-section and a predetermined cross-sectional shape in the abdomen at an inner point of the mold positioned on the piers; Characterized in that the steel cross beam frame and the upper flange of the mold to the slab concrete integrally placed and cured to form a composite concrete cross beam and slab.

Description

Steel plate girder bridge and it's construction method is using a steel composite horizontal beam}

1 is a side view showing a steel plate girder bridge using a composite concrete crossbeam according to the present invention,

Figure 2 is a plan view showing a steel plate girder bridge using a composite concrete crossbeam according to the present invention,

3 is a perspective view showing a box-shaped steel beam cross frame of a steel plate girder bridge according to the present invention,

4 is a front view showing a state in which a concrete composite crossbeam using a box-shaped steel crossbeam frame according to the present invention is installed in a mold;

5 is a side view showing a state in which a composite concrete crossbeam using a box-shaped steel crossbeam frame according to the present invention is installed in a mold;

Figure 6 is a perspective view showing the c-beam steel beam frame of the steel plate girder bridge according to the present invention,

7 is a front view showing a state in which a composite concrete crossbeam using a c-shaped steel crossbeam frame according to the present invention is installed in a mold;

8 is a side view showing a state in which a composite concrete crossbeam using a c-shaped steel crossbeam frame according to the present invention is installed in a mold;

9 is a perspective view showing a T-beam steel beam frame of the steel plate girder bridge according to the present invention,

10 is a front view showing a state in which a composite concrete crossbeam using a T-shaped steel crossbeam frame according to the present invention is installed in a mold;

11 is a side view showing a state in which a composite concrete crossbeam using a T-shaped steel crossbeam frame according to the present invention is installed in a mold;

12 is a perspective view showing a flat steel cross beam frame of a steel plate girder bridge according to the present invention,

FIG. 13 is a front view showing a state in which a composite concrete crossbeam using a flat steel crossbeam frame according to the present invention is installed in a mold; FIG.

Figure 14 is a side view showing a state in which the composite concrete crossbeam using the plate-shaped steel crossbeam frame according to the present invention installed in the mold.

Explanation of symbols on the main parts of the drawing

10: shift 12: pier

20: mold 22: upper flange

24: lower flange 26: abdomen

30: steel cross beam frame 32: shear connector

40: slab 50: formwork

60: PC steel wire 62: anchorage

70: composite concrete crossbeam 80: concrete

The present invention relates to a steel plate girder bridge using a composite concrete crossbeam and a construction method thereof, in particular to install a steel crossbeam frame in the inner point to increase the cross-sectional rigidity of the type I steel beam, and to cast concrete on the steel crossbeam frame The present invention relates to a steel plate girder bridge using a composite concrete cross beam and to a construction method thereof, wherein the cross-sectional stiffness of a parent cement section is increased by curing to form a rigid concrete cross beam.

In general, cross beams that increase the lateral stiffness of the bridge, distribute the cross-sectional force acting on the mold under the wheel load to adjacent molds, and minimize the harmful effects of the bottom plate or the point caused by the torsion. It is installed in a direction parallel to the device.

The steel plate girders, which are conventionally installed on the molds of steel plate girder bridges, are provided with bolts or welding on the left and right abdomen of the molds to prevent warping of the molds, and contribute to increasing the cross-sectional rigidity of the molds. I can't do it.

Accordingly, the present invention has been made to solve the problems described above, to increase the cross-sectional stiffness of the I-beam steel beam to the steel cross beam frame having a size within the parent at the head width of the pier in the inner point portion or more Steel plate girder bridge using steel composite girders, which are installed to pour concrete into the steel cross beam frame to form a composite concrete cross beam, thereby increasing the cross-sectional stiffness of the parent cement section to increase structural efficiency. The purpose is to provide a construction method.

Steel plate girder bridge using a composite concrete crossbeam according to the present invention for achieving the above object is installed on the alternating and pier, the mold consisting of the upper, lower flange and the abdomen; A steel cross beam frame joined between the lower flange and the abdomen to the inner point of the mold by bolts or welding, and having a predetermined cross-sectional shape; A steel composite concrete cross beam filled with concrete in the steel cross beam frame; Characterized by consisting of a slab for curing the concrete on the upper surface of the upper flange of the mold.

In addition, the steel plate girder bridge construction method using a composite concrete crossbeam according to the present invention for achieving the above object comprises the steps of mounting a mold consisting of upper, lower flange and abdomen on the alternating and pier; Bolting or welding a steel cross beam frame having a lower cross-section and a predetermined cross-sectional shape in the abdomen at an inner point of the mold positioned on the piers; The steel cross beam frame and the upper surface of the upper flange of the mold by placing and curing the slab concrete integrally characterized in that the step of forming a composite concrete cross beam and slab.

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

1 is a side view showing a steel plate girder bridge using a composite concrete crossbeam according to the present invention, Figure 2 is a plan view showing a steel plate girder bridge using a composite concrete crossbeam according to the present invention.

As shown in these figures, the steel plate girder bridge using the composite concrete crossbeam according to the present invention is installed on the alternating 10 and the pier 12, the upper, lower flanges 22, 24 and the abdomen 26 A mold 20 comprising: A steel cross beam frame 30 joined between the lower flange 24 and the abdomen 26 by a bolt or welding, and having a predetermined cross-sectional shape at an inner point of the mold 20; A steel composite concrete cross beam 70 in which the concrete 80 is filled in the steel cross beam frame 30; The slab 40 to which the concrete 80 is poured is cured on the upper surface of the upper flange 22 of the mold 20.

That is, in the steel plate girder bridge using the composite concrete cross beam according to the present invention, the concrete 20 is filled in the mold 20 and the steel cross beam frame 30 and the steel cross beam frame 30 on the alternating 10 and the piers 12. The composite steel cross beam 70 and the slab 40 are organically coupled.

Here, the mold 20 is composed of the upper, lower flanges 22 and 24 and the abdomen 26, and is a steel girder such as a steel box girder and a steel plate girder.

The mold 20 is provided with a steel cross beam frame 30 having a cross-sectional shape formed in any one of a box shape, a c shape, a T shape, and a flat plate shape at an inner point portion thereof.

Here, the reason for installing the steel cross beam frame 30 in the mold as described above is to install the steel cross beam frame 30 in the inner point portion to increase the cross-sectional rigidity of the mold 20 made of the I-type steel beam, In order to increase the structural efficiency by increasing the cross-sectional stiffness of the parent section section by forming a cured concrete cross beam 70 by pouring concrete 80 in the steel cross beam frame 30.

That is, when the steel cross beam frame 30 is made into a steel box shape, and the concrete 80 is integrally filled when the slab 40 is placed therein, the steel composite beam cross beam 70 is formed.

Therefore, the steel cross beam frame 30 means the state installed in the mold 20 before the slab 40 concrete pouring, later the slab 40 concrete 80 when the concrete 80 steel cross beam frame integrally When the steel is poured into the steel cross beam frame 30 is formed of a steel composite concrete cross beam 70 integral with the slab 40.

 In addition, the steel cross beam frame 30 is a structure in which the shear connecting member 32 is welded to the inside of the steel cross beam frame 30 to increase the adhesion between the steel and concrete.

Here, as the shear connector 32, a stud bolt is mainly used.

In addition, the steel cross beam frame 30 is preferably limited in size to the size within the parent within the width of the head of the pier 12 in the axial direction.

This is to achieve the maximum cross-sectional stiffness using the minimum steel cross beam frame 30.

Steel plate girder bridge construction using a steel composite concrete cross beam according to the present invention having the configuration as described above will be described.

Steel plate girder bridge construction method using a rigid concrete crossbeam according to the present invention is to mount the mold 20 consisting of the upper, lower flanges 22, 24 and the abdomen 26 on the alternating 10 and piers 12 step; Bolting or welding the steel cross beam frame 30 having a predetermined cross-sectional shape to the lower flange 24 and the abdomen 26 at an inner point of the mold 20 positioned on the pier 12; The steel cross beam frame 30 and the slab 40 concrete 80 is integrally placed and cured on the upper surface of the upper flange 22 of the mold 20 to form a steel composite concrete cross beam 70 and the slab 40. It consists of steps.

That is, the steel plate girder bridge construction method using a steel composite girder bridge according to the present invention is to mount the mold 20 on the alternating 10 and the piers 12, the steel cross beam frame ( 30 is bolted or welded, and the slab 40 concrete 80 is integrally placed and cured on the upper surface of the upper flange 22 of the steel cross beam frame 30 and the mold 20 to be slab 40. And to construct a composite concrete crossbeam 70.

In this case, when the steel cross beam frame 30 is a box-shaped or c-type steel cross beam frame 30, all parts except the upper part are sealed when installed in the mold 20, so that a separate formwork 50 is required to be installed. none.

In addition, after welding or bolting the steel cross beam frame 30 to the mold 20 during the above-described construction step, adding the formwork 50 to the steel cross beam frame 30 is added.

That is, in the case where the shape of the steel cross beam frame 30 is a T-shaped or flat steel cross beam frame 30, since the portions in which the steel cross beam frame 30 is installed are both open in the axial direction, formwork is separately formed at both ends ( 50) attached to the installation, and when the slab (40) concrete 80 is poured at the same time, the concrete 80 after pouring the cured concrete 80 over the steel cross beam frame 30 and the slab 40, the concrete (80) After curing, the formwork 50 is dismantled and then cleaned.

On the other hand, the composite concrete cross beam 70 may be arranged to arrange the PC steel wire 60 in the axial direction as needed, and may be attached to the fixing unit 62 for fixing the PC steel wire 60 to the lower side of the outer surface of both ends.

Such PC steel wire 60 is to reduce the size of the parent by the tensile force of the PC steel wire (60).

In addition, after the mold 20 is mounted, a deck plate (not shown) made of steel or concrete is installed on the upper surface of the lower flange 24 of the mold 20, and formwork is formed on both end portions of the deck plate in the axial direction. 50).

 This is a method in which the steel cross beam frame 30, which is a method of pouring concrete 80 from the upper flange 22 side of the mold 20 is omitted.

Steel plate girder bridge using the composite concrete crossbeam made of the configuration and construction as described above is installed when the concrete 20 crossbeam 70 is a cross section or when the mold 20 is a cross section. Note that it can be used.

3 is a perspective view illustrating a box-shaped steel beam beam frame of a steel plate girder bridge according to the present invention, wherein the box-shaped steel beam beam frame 30 is formed in a box shape in which a top surface is open and other surfaces are blocked, and the box-shaped steel beam The shear connector 32 is attached to the cross beam frame 30.

In addition, the steel cross beam frame 30 is a structure in which the PC steel wire 60 is disposed across both side plates, and the fixing unit 62 is attached to the outer surface of the side plate to fix the PC steel wire 60.

The reason for installing such a PC steel wire 60 is to reduce the size of the parent by the tensile force of the PC steel wire (60).

Figure 4 is a front view showing a state in which the composite concrete crossbeam using the box-shaped steel crossbeam frame according to the present invention installed in the mold, Figure 5 is a steel composite concrete crossbeam using the box-shaped steel crossbeam frame according to the present invention It is a side view which shows the installed state.

These drawings show that the box-shaped steel beam frame 30 is bolted or welded to the lower flange 24 and the abdomen 26 of the mold 20 near the inner point of the mold 20, and then concrete is cast and cured. Concrete crossbeam 70 is a structure formed.

Here, the box-shaped steel cross beam frame 30 is a cross-sectional shape of all parts except the upper portion is in a sealed state, so there is no risk of flowing down when concrete is poured, it is not necessary to install a separate formwork 50 for concrete pouring. Structure.

Therefore, when the concrete is placed and cured integrally with the slab 40 in the box-shaped cross beam frame 30, the box-shaped steel cross beam frame 30 is a steel composite concrete cross beam 70 filled with concrete on its inner surface. Is formed, and the upper portion of the mold 20 is a structure in which the slab 40 is formed.

 6 is a perspective view showing a c-beam steel beam frame of the steel plate girder bridge according to the present invention, the c-beam steel beam frame 30 is a c-shaped top and left and right sides, the other bottom and front and rear surfaces are blocked. The shear connector 32 is attached to the c-shaped steel cross beam frame 30.

7 is a front view showing a state in which the composite concrete cross beam using the c-shaped steel cross beam frame according to the present invention installed in the mold, Figure 8 is a state in which the steel composite concrete cross beam using the c-type steel cross beam frame according to the present invention installed in the mold It is a side view showing.

These drawings are structures in which the c-shaped steel cross beam frame 30 is bolted or welded to the lower flange 24 and the abdomen 26 of the mold 20 near the inner point portion of the mold 20.

Here, after the c-shaped steel beam beam 30 is installed in the mold 20, the cross-sectional shape is a structure that does not require the installation of a separate formwork 50 for concrete pouring because all parts except the upper surface is sealed. .

That is, when the c-shaped steel beam frame 30 is installed in the mold 20, the c-beam steel beam frame 30 is in the state in which both ends of the axial direction are closed by the abdomen 26 of the mold 20, so that the slab ( 40) When the concrete 80 is poured, it is not necessary to install the formwork 50 for pouring the concrete 80.

Therefore, when the concrete 80 is integrally placed and cured with the slab 40 on the c-shaped reinforcement cross beam frame 30, the c-shaped steel cross beam frame 30 is steel in which concrete 80 is filled on its inner surface. Synthetic concrete cross beam 70 is formed, the upper portion of the mold 20 is a structure in which the slab 40 is formed.

9 is a perspective view showing the T-shaped steel cross beam frame of the steel plate girder bridge according to the present invention, the T-shaped steel cross beam frame 30 is formed in the same shape as the T-shape, the T-shaped steel cross beam Shear connector 32 is attached to the inside of the frame (30).

10 is a front view showing a state in which a composite concrete crossbeam using the T-shaped steel crossbeam frame according to the present invention is installed in the mold, Figure 11 is a composite concrete crossbeam using the T-shaped steel crossbeam frame according to the present invention It is a side view which shows the installed state.

These drawings are a structure in which the T-shaped steel cross beam frame 30 is bolted or welded to the lower flange 24 and the abdomen 26 of the mold 20 near the inner point portion of the mold 20.

Here, when the T-shaped steel beam cross frame 30 is installed in the mold 32, the two ends of the axial direction in the axial direction is opened, the formwork 50 is attached to both ends, When placing the T-shaped steel cross beam frame 30 to the upper slab 40 concrete 80, the concrete 80 is poured in batch.

After curing the concrete 80 formwork 50 is to dismantle, to arrange the surface of the T-shaped steel cross beam frame 30 of the dismantled portion.

Therefore, when the concrete 80 is cast and cured integrally with the slab 40 in the T-shaped cross beam frame 30, the T-shaped steel cross beam frame 30 is filled with concrete 80 on its inner surface. The reinforced composite concrete cross beam 70 is formed, and the upper portion of the mold 20 has a structure in which the slab 40 is formed.

12 is a perspective view showing a flat steel cross beam frame of a steel plate girder bridge according to the present invention, the flat steel cross beam frame 30 is made of a cross-sectional shape of the same as the letter 자 와, the flat steel cross beam frame The shear connector 32 is attached to the surface of 30.

FIG. 13 is a front view illustrating a state in which a composite concrete crossbeam using a flat steel crossbeam frame according to the present invention is installed in a mold, and FIG. 14 illustrates a steel composite crossbeam using a flat steel crossbeam frame according to the present invention. It is a side view which shows the installed state.

These drawings show a structure in which the flat steel cross beam frame 30 is bolted or welded to the lower flange 24 and the abdomen 26 of the mold 20 near the inner point portion of the mold 22.

Here, when the plate-type steel cross beam frame 30 is installed in the mold 20, when the plate-type steel cross beam frame 30 is installed, both ends in the axial direction are opened, and when the concrete 80 is poured into this portion, the concrete Since the 80 flows down, formwork 50 is attached to both ends to prevent this, and when the flat slab cross beam frame 30 is placed in the upper slab 40 concrete 80, Pour 80.

After curing the concrete 80, the formwork 50 is to be dismantled, to arrange the surfaces of the flat steel cross beam frame 30 of the dismantled portion.

Therefore, when the concrete is placed and cured integrally with the slab 40 to the flat-type steel cross beam frame 30, the flat-shaped steel cross beam frame 30 is a steel composite concrete cross beam filled with concrete on the inner surface thereof ( 70 is formed, and the upper portion of the mold 20 is a structure in which the slab 40 is formed.

As described above, the steel plate girder bridge and the construction method using the steel composite concrete crossbeam according to the present invention has the following effects.

First, the present invention has the advantage that the structural efficiency is increased by increasing the cross-sectional stiffness of the parent cement section by installing a cross-beam composed of steel and concrete to the inner cross section cross beam to increase the cross-sectional rigidity of the I-type steel beam.

Second, the present invention, in the type I steel bridge, by combining the concrete with strong compression on both sides of the lower portion of the lower portion of the steel cross beam frame of various forms, to increase the cross-sectional stiffness of the I-type steel beam at a low price, low and long There is an advantage to building bridges as economically as possible.

Claims (9)

delete A mold (20) installed on the alternating (10) and pier (12) and composed of upper and lower flanges (22, 24) and an abdomen (26); A steel cross beam frame 30 joined between the lower flange 24 and the abdomen 26 by a bolt or welding, and having a predetermined cross-sectional shape at an inner point of the mold 20; A steel composite concrete cross beam 70 in which the concrete 80 is filled in the steel cross beam frame 30; In the steel plate girder bridge using a steel composite concrete crossbeam consisting of a slab 40 in which the concrete 80 is poured on the upper surface of the upper flange 22 of the mold 20, The steel composite girder bridge using the composite concrete cross beam 70 and the slab 40 is formed integrally by pouring concrete. delete delete A mold (20) installed on the alternating (10) and pier (12) and composed of upper and lower flanges (22, 24) and an abdomen (26); A steel cross beam frame 30 joined between the lower flange 24 and the abdomen 26 by a bolt or welding, and having a predetermined cross-sectional shape at an inner point of the mold 20; A steel composite concrete cross beam 70 in which the concrete 80 is filled in the steel cross beam frame 30; In the steel plate girder bridge using a steel composite concrete crossbeam consisting of a slab 40 in which the concrete 80 is poured on the upper surface of the upper flange 22 of the mold 20, PC steel wire 60 is disposed in the axial direction of the bridge, and the anchorage 62 for fixing the PC steel wire 60 to the lower end of both ends of the composite concrete cross beam 70 is attached to the rigid concrete cross beam 70. Steel plate girder bridge using a composite concrete crossbeam characterized in that the installation. delete Mounting a mold (20) consisting of upper, lower flanges (22, 24), and an abdomen (26) on the alternating (10) and pier (12); Bolting or welding the steel cross beam frame 30 having a predetermined cross-sectional shape to the lower flange 24 and the abdomen 26 at an inner point of the mold 20 positioned on the pier 12; In the step of forming a steel composite beam cross beam 70 and the slab 40 by pouring and curing the slab 40 concrete integrally on the upper surface of the upper flange 22 of the steel cross beam frame 30 and the mold 20. Steel plate girder bridge construction method using a composite concrete crossbeam characterized in that made. The method of claim 7, wherein After mounting the mold 20, a deck plate made of steel or concrete is installed on the upper surface of the lower flange 24 of the mold 20, and the formwork 50 is installed on both end portions of the deck plate in the axial direction of the deck plate. Steel plate girder bridge construction method using a composite concrete crossbeam characterized in that consisting of. The method of claim 7, wherein Steel plate girder bridge construction method using the composite concrete cross beam 70, characterized in that when the mold 20 is installed when the mold 20 is an equal cross-section or the mold 20 is a cross-sectional surface.

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