KR101439947B1 - Bridge using girder with ring plate and bracket and bridge construction method therefor - Google Patents

Abstract

The present invention relates to a method of constructing a girder bridging structure by installing a transverse bracket on an upper portion of a circular girder and a deck on the transverse bracket. In the method of construction, the plate having a plurality of through holes is spaced apart from each other, Which is formed by cutting a connecting end portion in the form of a plate so as to be inserted into the insertion space in correspondence with the position and shape of the ring plate, is formed on the outer circumferential surface of the connecting plate, The transverse bracket is inserted into the ring plate of the circular girder, and the circular girder and the transverse bracket are fastened to each other by using a connecting bolt and a fastening nut. Forming a deck to form a slab, It provides a mounting circular girder and bridge construction method using the lateral bracket.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge using a circular girder having a ring plate and a lateral bracket, and a method of constructing the bridging bridge.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge using a circular girder and a lateral bracket to which a ring plate is attached, and a construction method thereof. More specifically, the present invention relates to a method of constructing a girder bridge by installing a transverse bracket on an upper portion of a circular girder and constructing a deck on the transverse bracket.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 shows a cross-section and a partial perspective view of a conventional pedestrian overpass.

Pedestrian overpass is a bridge designed to allow pedestrians to traverse roads and rivers. Since the traffic load is not large, it is common to construct and construct the bridge with a simple structure rather than a bridge capable of passing traffic.

It can be seen that the pedestrian overpass is formed by a bracket 33 connecting a girder 31, which is a round steel pipe, to a lower portion of the girder, and a bridge upper plate 20 provided between the upper portion of the girder.

That is, since the round steel pipe is used as the girder 31, a bracket 33 for restricting the girder 31 in a transverse direction is installed so that the ready-made product can be used as it is. Such a bracket 33 is made of a steel material, (33) and the lower part of the steel pipe are welded to each other and integrated.

The bridge upper plate 20 is installed in a state where the girders 31 are constrained to each other by the bracket 33. The bridge upper plate 20 is also welded between upper portions of the girders 31 by using steel plates do. In addition, a railing support 32 is installed on the upper surface of the bridge upper plate 20.

As a result, it can be seen that when using bridges and bridges for the construction of bridges using conventional round steel pipes, it is accompanied by a lot of welding work. Quality control becomes very important when the number of welding works increases.

In addition, when the amount of welding is increased, the workability is inevitably lowered. However, since the steel is made of steel, the welding can not be used as the most convenient connecting means.

However, since the connecting portion between the circular steel pipe and the bracket is formed as a curved portion, it is difficult to actually weld the steel pipe, and thus the welding cost is inevitably increased.

In addition, the construction by welding is also disadvantageous in recycling since the round steel pipe is inevitably damaged at the time of dismantling.

Furthermore, because the circular girders made of materials other than steel pipes can not be welded, there is room for improvement in terms of usability and workability in the construction of a bridge using a circular girder constructed with a simple structure.

Accordingly, the present invention provides a circular girder having a ring plate that can be installed more quickly and economically because a welding operation is hardly carried out in the field, such as a steel pipe or a PHC file (pipe) And a lateral bridge bracket, and a method of constructing the bridge.

In order to solve the above problems,

First, two ring plates having fastening holes formed along the outer circumferential surface of the circular girder are spaced apart from each other so as to form an insertion space. The ring plates are formed so as to be spaced apart from each other in the longitudinal direction of the circular girder, After inserting the connecting plate, they are fastened to each other so that the lateral bracket and the girder can be easily connected to each other by the bolt fastening method.

Second, the transverse brackets are made of one or more segments and are arranged so as to surround the entire upper or the whole of the circular girder, and a deck of lightweight material is provided on the upper surface so that the slab of the bridge can be easily formed.

Third, the transverse bracket and the circular girder are installed so as to be supported by the piers, and the lateral brackets or the circular girders can be easily seated and supported on the piers using the side support brackets.

Fourthly, the circular girder is provided with a ring plate in the form of a band in the packing material surrounding the PHC file, and the ring plate and the lateral bracket are connected to each other, so that a PHC file other than a circular steel pipe can be used as a circular girder. A circular girder was made available.

To this end,

A bridge including a lateral bracket on an upper portion of a circular girder and a deck for slab provided on an upper surface of the lateral bracket, wherein a plate having a plurality of through holes spaced apart from each other along the outer circumferential surface of the circular girder, ; And a through-hole formed in the insertion space, the cut-out portion formed by cutting a connecting end portion in the form of a plate so as to be inserted into the insertion space of the ring plate corresponding to the position and shape of the ring plate, And a transverse bracket which is inserted into the ring plate and is fastened to the ring plate by a connecting bolt and a fastening nut, and a method of constructing the same using the transverse girder and the transverse bracket.

Since the present invention provides a prefabricated structure in which all the members are manufactured in the factory in advance, it is possible to easily complete girders which require rapid construction.

In addition, not only the steel pipe but also the circular girder such as the PHC pile can be easily fastened to the transverse bracket, thereby enabling more efficient and economical bridge construction.

In addition, a deck having a variety of materials is installed on a plurality of spaced apart lateral brackets along a circular girder, so that a bottom plate can be constructed to enable a quicker bottom plate construction.

In addition, since the circular girder can be formed in a curved shape in advance, the present invention can be applied to a curved bridge, which makes it easy to construct a curved bridge.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

1 is a sectional view and a perspective view of a pedestrian overpass using a conventional round steel pipe.
FIGS. 2a, 2b, 2c and 2d are perspective views of the connection of a circular girder and a transverse bracket to which the ring plate of the invention is mounted,
Figs. 3A and 3B are construction cross-sectional views of a circular girder, a lateral bracket,
4A and 4B are construction examples of a bridge using a circular girder and a lateral bracket equipped with the ring plate of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

[Connection of round girder and lateral bracket with ring plate]

Figs. 2a and 2b are perspective views showing the connection of a circular girder with a ring plate and a lateral bracket. Fig.

2A and 2B illustrate a case where a circular steel pipe is used in a circular girder 100, and FIGS. 2C and 2D are examples in which a PHC file is used as a circular girder 100. FIG.

2A and 2B, the circular girder 100 refers to a mold of a bridge, and refers to a girder having a circular cross section in the direction perpendicular to the longitudinal direction.

In FIGS. 2A and 2B, it can be seen that the circular steel pipe is used as the circular girder 100.

The circular girder 100 is preferably made of a ready-made product, but it can be manufactured by machining with a circular girder, which is optional depending on the diameter and the like.

The ring plate 200 is installed on the outer circumferential surface of the circular girder 100 so as to be spaced apart from each other in the longitudinal direction.

It is noted that the ring plate 200 is formed so as to surround the upper outer circumferential surface of the circular girder 200. The extending length of the ring plate 200 may be determined according to the connection portion with the lateral bracket 300.

In the case of FIGS. 2A and 2B, it can be seen that the upper part of the circular girder is formed to have a semicircular ring shape.

The ring plates 200 are spaced apart from each other such that the spaced plates 210 and 220 are opposed to each other to be used as a space into which the insertion coupling plate 310 to be described later is inserted, It can be formed by welding.

In this case, it is preferable that the reinforcing plate 230 supports both side surfaces of the ring plate 200 so that the ring plate 200 is welded to the outer circumferential surface in the form of a vertical plate, and is also welded to the outer circumferential surface of the circular girder.

It is noted that the ring plate 200 is formed with a plurality of through holes 240 so as to communicate with each other.

A lateral bracket 300 is provided on the circular girder 100 on which the ring plate 200 is formed.

When the number of the circular girders 100 is two or more, the lateral bracket 300 has a function of connecting the circular girder. If one circular girder is used, the circular girder is disposed at the center and the lateral bracket 300 So that the deck 400 is basically supported.

When two lateral brackets 300 are used, two I-shaped beam members fabricated in such a manner that the vertical height increases toward the central circular girder 100 can be used.

The insertion connecting plate 310 is positioned at the position where the ring plate 200 is formed so as to be connected to the ring plate 200 of the circular girder. The lower part of the connection end A of the steel I- So that the cut portion serves as the insertion coupling plate 310.

That is to say, the cut-out portion of the I-beam serves as the insertion coupling plate 310, so that the entire cut-out portion is formed in an arc shape corresponding to the shape of the ring plate 200.

Therefore, it can be seen that a plurality of through holes 311 are formed in the insertion coupling plate 310 at positions corresponding to the coupling holes of the ring plate.

At this time, the upper flanges of the adjacent lateral brackets 300 are brought into contact with each other and connected to each other by the connecting bolts and the coupling nuts using the splice 320 (connecting plate)

The insertion coupling plate 310 is inserted into the connection space S by the ring plate 200 so that the circular girder and the lateral bracket are integrated with each other by the coupling bolts and the coupling nuts inserted into the through holes 240 and 311 It can be seen that the welding operation is not necessary.

In addition, since the circular girder 100 is arranged so as to enclose the lateral bracket 300, the height from the bottom of the circular girder to the upper surface of the lateral bracket is not large, so that the shape space of the bridge can be sufficiently secured.

In the case of using one lateral bracket 300 as shown in FIG. 2B, it is not possible to eliminate the type of connecting the upper flanges of the lateral bracket with the splice 320 (connecting plate) (310) are inserted into the circular ring plate (200) to be integrated with each other.

That is, it can be seen that the ring plate 200 can be formed to surround the entire outer circumferential surface, not the upper part of the circular girder 100 in particular.

2C and 2D, a PHC file is used as the circular girder 100. The PHC file is a prestressed reinforced concrete girder. In the present invention, a rubber packing material 110 is further provided on the outer circumferential surface of the PHC file, and a ring-shaped ring plate 200 is installed to surround the packing material 110.

That is, the folding connecting end of the ring plate 200 is tightened with the connecting bolt and the channel nut so that the ring plate 200 can be installed in the packing material 110.

As a result, it can be seen that the ring plate 200 can be easily mounted on the circular girder which is a PHC file which can not be welded.

Of course, it is preferable that the ring plate 200 is formed by separating two plates in a circular shape so that the insertion space S can be formed, and the reinforcing plate 230 can be formed.

It can also be seen that the ring plate 200 has a plurality of through holes 240 so as to communicate with each other.

The lateral bracket 300 is also provided on the circular girder 100 on which the ring plate 200 is formed.

When the number of the circular girders 100 is two or more, the lateral bracket 300 also has the function of connecting the circular girders. If one circular girder is used, the circular girders are arranged at the center, So as to support the deck 400 basically.

When two lateral brackets 300 are used, two I-shaped beam members fabricated in such a manner that the vertical height increases toward the central circular girder 100 can be processed and used. The insertion connecting plate 310 is positioned at the position where the ring plate 200 is formed so as to be connected to the ring plate 200 of the circular girder. The lower part of the connection end A of the steel I- So that the cutout portion serves as the insertion and connection plate 310. [0065]

The cut-out portion of the I-beam serves as the insertion coupling plate 310, so that the entire cut-out portion is formed in an arc shape corresponding to the shape of the ring plate 200, Hole 311 is formed at a position corresponding to the fastening hole of the ring plate.

The upper flanges of the lateral brackets 300 adjacent to each other are also brought into contact with each other and connected to each other by a connecting bolt and a fastening nut by using a splice 320,

The insertion coupling plate 310 is inserted into the connection space S formed by the ring plate 200 so that the circular girder and the lateral bracket are integrated with each other by the coupling bolts and the coupling nuts inserted into the through holes 240 and 311 The same is true.

In case of using one lateral bracket 300 as shown in FIG. 2d, the type of connecting the upper flanges of the lateral bracket to each other by the splice 320 (connecting plate) is eliminated, and the insertion connecting plate 310 can be inserted into the circular ring plate 200 to be integrated with each other and the ring plate 200 can be formed to surround the entire circumference of the circular girder 100 rather than the upper portion.

[Connection with round girder with pier and ring plate]

3A and 3B illustrate connection examples of the circular girder 100 and the bridge pier 410 on which the ring plate 200 of the present invention is mounted, with reference to the girder according to FIG. 2A.

3A, details of the connection between the circular girder 100, which is a circular steel pipe, and the bridge pier 410 in two lateral brackets 300, can be confirmed.

It can be seen that the side support brackets 412 are formed on both sides of the round steel pipe column 411 and the head of the round steel pipe column 411 as piers 410, A bridge support 413 is formed on the upper surface of the bridge support 413,

The upper surface of the bridge support 413 is in contact with the bottom surface of the lateral bracket 300.

This is because the circular girder 100 is not directly supported by the bridge pier 410 because the bottom of the circular girder is curved so that stress concentration may occur when it is directly contacted to the upper surface of the bridge pier.

3B is a side view of the bracket 414 in which a top bracket 410 is formed to have a semicircular groove H and a bottom of the circular girder 100 is inserted into the semicircular groove H, Is supported by the bottom surface of the lateral bracket in contact with each other.

As a result, it can be seen that the loads of the circular girder 100 and the lateral bracket 300 are installed while being supported by the entire bridge pier.

[Bridging method using circular girder and lateral bracket with ring plate]

4A and 4B are perspective views of a bridge construction using a circular girder and a lateral bracket according to the present invention.

4A, the circular girder 100 is formed in a curved shape, and the lateral bracket 300 is installed at right angles to the circular girder 100 along the circular girder, so that the lateral bracket 300 It can be seen that a circular girder is arranged at the center.

On the upper surfaces of the lateral brackets 300, a handrail member 500 is provided and a plurality of decks 600 are installed on the upper surface of the lateral bracket 300.

It will be appreciated that such a deck 600 may be made of a lightweight slab using wood, tempered glass, FRP decks.

That is, FIG. 4A is an example in which the circular girder 100 is formed in a curved shape and the deck 600 is installed to construct the slab.

In the case of FIG. 4B, the curved bridge is constructed by arranging the circular girder 100 in a straight line and adjusting the lateral extension length of the lateral bracket 300. It can also be seen that a deck is used as a slab when the balustrade member 500 is installed.

100: Circular girder
110: packing material
200: ring plate
210, 220: plate
230: reinforcing plate
240: Through hole
300: transverse bracket
310: Insertion connection plate
320: Splice
410: Pier
411:
412: Side support bracket
413: Bridge support
500: Railing member
600: Deck

Claims (6)

A bridge including a lateral bracket on an upper portion of a circular girder and a deck for slab provided on an upper surface of the lateral bracket,
A ring plate formed so as to be spaced apart from each other along the outer circumferential surface of the circular girder so as to form an insertion space; And
A through hole is formed in the insertion space, and a cut-out portion formed by cutting a connection end portion in the form of a plate is inserted into the insertion space of the ring plate corresponding to the ring plate position and shape, A lateral bracket that is fastened to the ring plate by a connecting bolt and a fastening nut;
Wherein the bridging member comprises a circular girder with a ring plate and a transverse bracket. The method according to claim 1,
Wherein the circular girder has a ring plate formed as a circular steel pipe along the entire upper or outer circumferential surface of the circular steel pipe, and a bridge using the circular girder and the lateral bracket fitted with the ring plate. The method according to claim 1,
Wherein the circular girder is provided with a packing material along the entire outer circumferential surface thereof, and a ring plate in the form of a circular band band is mounted on the outer circumferential surface of the packing material, and a bridge using the circular girder and the transverse bracket. The method according to claim 1,
Wherein the ring plate is installed so that a plurality of the ring plates are spaced apart from each other in the longitudinal direction of the circular girder, the lateral brackets are fastened to the respective ring plates, and the decks are mounted on the plurality of lateral brackets. Bridges using circular girders and lateral brackets. A circular girder provided on the outer circumferential surface of the ring plate is provided so as to be spaced apart from each other so that plates having a plurality of through holes facing each other are formed,
And a transverse bracket formed on the connection end, wherein the insertion connection plate is a cut-out portion formed by cutting a connection end portion in the form of a plate so as to be inserted into the insertion space corresponding to the position and shape of the ring plate,
The circular connecting plate of the transverse bracket is inserted into the ring plate of the circular girder and the circular girder and the lateral bracket are fastened to each other by using the connecting bolt and the fastening nut,
And forming a slab by providing a deck on an upper surface of the transverse bracket. The method of claim 1, wherein the slab is formed by a circular girder and a transverse bracket. 6. The method of claim 5,
The circular girder may be formed as a circular steel pipe, or a ring plate may be formed along the entire upper or outer circumferential surface of the circular steel pipe.
Wherein the circular girder is provided with a packing material along the entire circumference thereof and a ring plate of a circular band band is mounted on the outer circumferential surface of the packing material.

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