KR102654228B1 - Earthquake-resistant structure for pedestrian bridges using steel pipe girders - Google Patents

Abstract

The present invention relates to an earthquake-resistant structure for a pedestrian bridge using a steel pipe girder, and more specifically, to a pier having at least one installed pier, a steel pipe girder portion installed on the installed pier, and a pier connecting the steel pipe girder portion to the pier. It includes a connection part, and a steel pipe earthquake-resistant part for pulling the steel pipe girder part in the direction of the bridge to improve mutual coupling force.
According to the present invention as described above, the steel pipe girder portion can be firmly coupled to the bridge pier, so that the shape can be maintained even when an external shock such as an earthquake is transmitted, thereby improving structural stability.

Description

Earthquake-resistant structure for pedestrian bridges using steel pipe girders}

The present invention relates to an earthquake-resistant structure, and more specifically, to the use of a steel pipe girder, which can firmly couple the girder to the bridge pier and maintain its shape even when external shocks such as earthquakes are transmitted, thereby improving structural stability. This is about earthquake-resistant structures for pedestrian bridges.

Generally, girders are used to support the bridge deck constituting a bridge, and these girders must have bending rigidity.

Since the girder supports the bottom of the bridge deck, when the bridge deck receives downward force due to its own load or external force, compressive force acts on the top of the girder and tensile force acts on the bottom.

The girders are made of circular steel pipes, square steel pipes, I-beams, etc., and are poured with concrete that is strong enough to withstand tensile or compressive stress.

In one embodiment, as previously disclosed in Patent No. 1059578, concrete is filled inside a steel pipe of circular cross-section to support tensile or compressive stress.

Here, as the girder is installed on the pier, the load is concentrated on the part connected to the pier, and if a problem occurs in the bonding force with the pier, a safety accident may occur.

Accordingly, there is an urgent need for the development of technology that can maintain the connection between girders and piers more firmly and stably.

Accordingly, the present invention was made to solve the above problems, and has at least one pier and a steel pipe installed, a steel pipe girder part installed on the installed pier, a pier connection part connecting the steel pipe girder part to the pier, And a steel pipe seismic section for pulling the steel pipe girder section in the direction of the pier to improve the mutual coupling force, so that the steel pipe girder section can be firmly coupled to the pier, so that the shape can be maintained even when an external shock such as an earthquake is transmitted, thereby maintaining the structure. The purpose is to provide an earthquake-resistant structure for pedestrian bridges using steel pipe girders that can improve physical stability.

The present invention for achieving the above object has at least one pier installed, a steel pipe, a steel pipe girder part installed on the installed pier, a pier connection part connecting the steel pipe girder part to the pier, and the steel pipe girder part in the direction of the pier. It includes a steel pipe seismic section to improve the mutual coupling force by pulling.

Preferably, the steel pipe girder portion is a top plate formed by at least two or more steel pipes arranged on the upper surface of the pier and spaced apart from each other, and a plurality of top plate unit frames formed in a direction perpendicular to the steel pipes installed along the steel pipes. Frames may be included.

The steel pipe includes an upper pipe forming an upper end about a central axis, and a lower pipe forming a lower end about a central axis, and the upper pipe and the lower pipe may be welded.

In addition, the steel pipe may further include a steel pipe reinforcement portion that improves durability of the steel pipe.

In addition, the steel pipe reinforcement unit may be provided with a plurality of reinforcement pieces welded along each inner peripheral surface of the upper pipe and the lower pipe in a ring shape.

In addition, the steel pipe reinforcement units are installed at regular intervals along the steel pipe, and an inner steel pipe may be further included along the inner end of each steel pipe reinforcement unit.

And the inner steel pipe includes a first inner pipe forming a part about the central axis, and a second inner pipe forming the other end about the central axis, and the first inner pipe and the second inner pipe are welded. It can be.

In addition, it may further include a handrail support, which is installed at regular intervals along the outermost steel pipe and on which a handrail is installed.

And the pier connection part may include a stud base installed on the upper surface of the pier, a stud block installed on the upper side of the stud base, and a stud frame installed on the upper side of the stud block to support the steel pipe.

In addition, the stud frame may have a stud space portion open upwardly formed therein, and may further include a stud reinforcement piece perpendicular to the longitudinal direction of the steel pipe in the stud space portion.

And the steel pipe seismic section may be a seismic wire whose one end is fixed to the steel pipe and the other end is fixed to the pier.

In addition, it may further include a distortion prevention unit to prevent the steel pipe from being rotated or distorted by a load.

And the anti-distortion part includes an anti-distortion wire, one end of which is fixed to the opposite half of the steel pipe on which the steel pipe quake-resistant part is installed, and the other end of which is fixed to the pier, and an anti-distortion wire that guides the anti-distortion wire by spacing it out so that it does not contact the steel pipe. May include rolls.

In addition, the anti-twisting wire may have one end fixed to the steel pipe on which the steel pipe earthquake-resistant part is installed, and the other end may be fixed to the pier part where the other end of the steel pipe inner support part is fixed.

One end of the anti-twisting wire may be fixed to the steel pipe on which the steel pipe earthquake-resistant part is installed, and the other end may be fixed to a bridge pier to which the other end of another adjacent steel pipe inner support part is fixed.

Additionally, the anti-twisting roll may be installed on a steel pipe or pier.

As described above, according to the earthquake-resistant structure for small bridges according to the present invention, the steel pipe girder part can be firmly coupled to the bridge pier, and the shape can be maintained even when external shocks such as earthquakes are transmitted, thereby improving structural stability. It is a very useful and effective invention.

Figure 1 is a diagram showing an earthquake-resistant structure for a pedestrian bridge using a steel pipe girder according to the present invention.
Figure 2 is a diagram showing a steel pipe girder portion and a pier connection portion according to the present invention;
Figure 3 is a diagram showing a distortion prevention unit according to the present invention;
Figure 4 is a diagram showing another embodiment of the anti-twisting part according to the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. The detailed description set forth below in conjunction with the accompanying drawings is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The following detailed description includes specific details to provide a thorough understanding of the invention. However, those skilled in the art will recognize that the present invention may be practiced without these specific details.

In some cases, in order to avoid ambiguity of the concept of the present invention, well-known structures and devices may be omitted or may be shown in block diagram form focusing on the core functions of each structure and device.

Throughout the specification, when a part is said to “comprise or include” a certain element, this means that it does not exclude other elements but may further include other elements, unless specifically stated to the contrary. do. Additionally, the term “… unit” used in the specification refers to a unit that processes at least one function or operation. In addition, the terms "a or an", "one", "the", and similar related terms are used in the context of describing the invention (particularly in the context of the claims below) as used herein. It may be used in both singular and plural terms, unless indicated otherwise or clearly contradicted by context.

In describing embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted. The terms described below are terms defined in consideration of functions in the embodiments of the present invention, and may vary depending on the intention or custom of the user or operator. Therefore, the definition should be made based on the contents throughout this specification.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

Figure 1 is a drawing showing an earthquake-resistant structure for a pedestrian bridge using a steel pipe girder according to the present invention, Figure 2 is a drawing showing a steel pipe girder part and a pier connection part according to the present invention, and Figure 3 is a drawing showing a distortion prevention part according to the present invention. It is a drawing, and Figure 4 is a drawing showing another embodiment of the distortion prevention part according to the present invention.

As shown in the drawing, the earthquake-resistant structure for a pedestrian bridge using a steel pipe girder includes a pier 100, a steel pipe girder portion 200, a pier connection portion 300, and a steel pipe earthquake-resistant portion 400.

At least one bridge pier 100 is installed as a lower structure of a bridge, such as a pedestrian bridge, and is a structure that supports the steel pipe girder portion 200 and transmits the load from the steel pipe girder portion 200 to the ground below.

And the steel pipe girder portion 200 has a steel pipe 210 and is installed on the installed bridge pier 100.

The pier connection part 300 connects the steel pipe girder part 200 to the pier 100.

And the steel pipe seismic unit 400 can pull the steel pipe girder unit 200 in the direction of the bridge pier to improve the mutual coupling force.

According to the earthquake-resistant structure for a pedestrian bridge using such a steel pipe girder, the steel pipe girder portion 200 can be firmly coupled to the bridge pier 100, and the shape can be maintained even when external shocks such as earthquakes are transmitted, thereby improving structural stability. You can do it.

For this purpose, the steel pipe girder portion 200 may include a steel pipe 210 and a top frame 220.

At least two steel pipes 210 are arranged on the upper surface of the bridge pier 100 to be spaced apart from each other. In one embodiment, two steel pipes 210 are arranged.

Additionally, the upper plate frame 220 may be formed by installing a plurality of upper plate unit frames 222 formed in a direction perpendicular to the steel pipes 210 between the steel pipes.

This top unit frame 222 is made of H-beam or T-shaped steel and has a flat top so that people can walk on the top of the pedestrian bridge, and an open space is formed at the bottom to reduce its own weight.

Here, the steel pipe 210 includes an upper pipe 212 and a lower pipe 214.

The upper pipe 212 forms an upper end based on the central axis.

Additionally, the lower pipe 214 forms a lower end based on the central axis, and the upper pipe 212 and the lower pipe 214 may be welded to form one piece.

Of course, the steel pipe 210 may be formed by processing a flat steel plate into a circular shape and then welding the two ends that are in contact with each other.

In addition, the steel pipe 210 may further include a steel pipe reinforcement portion 216, as shown in FIG. 2.

This steel pipe reinforcement portion 216 improves the durability of the steel pipe 210.

This steel pipe reinforcement portion 216 may be provided with a plurality of reinforcing pieces 217 welded along each inner peripheral surface of the upper pipe 212 and the lower pipe 214 in a ring shape.

Here, the steel pipe reinforcement parts 216 are installed at regular intervals along the corresponding steel pipe 210, and an inner steel pipe 218 may be further included along the inner end of each steel pipe reinforcement part 216.

This inner steel pipe 218 may include a first inner pipe 218a and a second inner pipe 218b.

The first inner tube 218a forms a part based on the central axis.

And the second inner tube 218b forms the other end based on the central axis, and the first inner tube 218a and the second inner tube 218b can be welded to form one piece.

In addition, the earthquake-resistant structure for a pedestrian bridge using a steel pipe girder may further include a handrail support 230.

The handrail supports 230 can be installed at regular intervals along the outermost steel pipe to form a handrail.

And the pier connection part 300 may include a stud base 310, a stud block 320, and a stud frame 330.

The stud base 310 may be installed on the upper surface of the pier 100, and the stud block 320 may be installed on the upper side of the stud base 310.

And the stud frame 330 is installed on the upper side of the stud block 320 to support the steel pipe 210.

The steel pipe 210 is firmly and stably supported by the pier connection portion 300.

Here, the bridge connection portion 300 may further include a stud reinforcement piece 340.

The stud frame 330 is formed with a stud space 332 open upwardly inside, and the stud reinforcement piece 340 is installed in the stud space 332 so as to be perpendicular to the longitudinal direction of the steel pipe 210. You can.

In addition, the steel pipe seismic unit 400 may be a seismic wire 410 whose one end is fixed to the steel pipe 210 and the other end is fixed to the bridge pier 100.

As the tension of this earthquake-resistant wire 410 is maintained, the steel pipe girder portion 200 can be stably fixed to the bridge pier 100 and maintain its shape even under external vibration or shock such as an earthquake.

And as shown in FIG. 3, the earthquake-resistant structure for a pedestrian bridge using a steel pipe girder may further include a distortion prevention part 500.

This anti-twisting portion 500 can prevent the steel pipe 210 from being rotated or twisted due to load.

This anti-distortion portion 500 may include an anti-distortion wire 510 and an anti-distortion roll 520.

One end of the anti-twisting wire 510 may be fixed to the opposite side of the steel pipe 210 on which the steel pipe seismic section 400 is installed, and the other end may be fixed to the pier 100.

And the anti-twisting roll 520 guides the anti-twisting wire 510 so that it does not contact the steel pipe 210.

In one embodiment, one end of the anti-twisting wire 510 is fixed to the steel pipe 210 on which the steel pipe earthquake-resistant section 400 is installed, and the other end is fixed to the pier portion to which the other end of the steel pipe earthquake-resistant section 400 is fixed. You can.

In another embodiment, as shown in FIG. 4, one end of the anti-twisting wire 510 is fixed to the steel pipe 210 on which the steel pipe earthquake-resistant section 400 is installed, and the other end is connected to another adjacent steel pipe earthquake-resistant section 400. The other end may be fixed to the fixed pier portion.

Here, one end of the anti-twisting wire 510 of each embodiment is pulled from the opposite side of the steel pipe 210 pulled by the steel pipe seismic section 400, and the steel pipe 210 is pulled from the steel pipe seismic section 400 by the load applied from the upper side. It is possible to prevent rotation or twisting in the direction being pulled by (400).

And in each embodiment, the anti-twisting roll 520 may be installed on the steel pipe 210 or the bridge pier 100.

The anti-twisting wire 510 of each of these embodiments prevents it from touching the steel pipe 210 or the anti-twisting wire 510 on the opposite side, and its tension is maintained so that it is pulled outward to the load applied from the upper side and the steel pipe seismic section 400. It is possible to prevent the steel pipe 210 from being distorted in response to the bearing force.

When this anti-twist roll 520 is installed on the steel pipe 210, the anti-twist wire 510 can be easily installed by moving along with the steel pipe 210, thereby improving work efficiency.

On the other hand, when installing the anti-twisting roll 520 on the bridge pier 100, it prevents unnecessary pressure from being applied to the steel pipe 210 by the anti-twisting wire 510 and reduces the tension of the anti-twisting wire 510. It can be maintained.

In other words, when the anti-twisting roll 520 is installed on the steel pipe 210, force is applied in the direction in which the steel pipe 210 is pulled outward to the earthquake-resistant steel pipe 400 by the anti-twisting wire 510 that is pulled. Therefore, it is desirable to apply it selectively depending on field conditions or circumstances.

In addition, one end of the anti-twisting wire 510 of each embodiment may be installed and pulled through a space open to the lower side of the upper plate unit frame 222.

100: Pier 200: Steel pipe girder part
210: steel pipe 220: top frame
300: Bridge connection part 400: Steel pipe earthquake-resistant part
410: Earthquake-resistant wire 500: Anti-twisting part
510: Anti-twisting wire 520: Anti-twisting roll

Claims (10)

At least one pier installed;
A steel pipe girder unit having a steel pipe and installed on the installed pier;
A pier connection part connecting the steel pipe girder part to the pier;
a steel pipe seismic unit for pulling the steel pipe girder unit in the direction of the pier to improve mutual coupling force; and
It includes an anti-twisting unit to prevent the steel pipe from being rotated or distorted by a load,
The steel pipe girder part,
At least two steel pipes arranged on the upper surface of the pier to be spaced apart from each other; and
It includes a top plate frame formed by a plurality of top plate unit frames formed in a direction perpendicular to the steel pipes installed along the steel pipes,
The steel pipe is,
An upper pipe forming the upper part based on the central axis; and
It includes a lower pipe forming the lower part based on the central axis,
The steel pipe is,
It includes a steel pipe reinforcement part that improves the durability of the steel pipe,
The steel pipe reinforcement part,
A plurality of reinforcement pieces welded along each inner peripheral surface of the upper pipe and the lower pipe are installed in a ring shape,
The steel pipe seismic section,
One end is fixed to the steel pipe, and the other end includes a seismic wire fixed to the pier,
The distortion prevention part,
An anti-twisting wire, one end of which is fixed to the opposite side of the steel pipe on which the earthquake-resistant steel pipe is installed, and the other end of which is fixed to the pier; and
An earthquake-resistant structure for a pedestrian bridge using a steel pipe girder, including an anti-distortion roll that guides the anti-distortion wire by spacing it out so that it does not contact the steel pipe.
delete delete delete delete According to paragraph 1,
An earthquake-resistant structure for a pedestrian bridge using a steel pipe girder, wherein the steel pipe reinforcement units are installed at regular intervals along the steel pipe, and further include an inner steel pipe along the inner end of each steel pipe reinforcement unit.
According to paragraph 1,
An earthquake-resistant structure for a pedestrian bridge using a steel pipe girder, further comprising a handrail support on which a handrail is installed and installed at regular intervals along the outermost steel pipe.
The method of claim 1, wherein the pier connection portion is:
A stud base installed on the upper surface of the pier;
A stud block installed on the upper side of the stud base; and
A stud frame installed on the upper side of the stud block to support the steel pipe. An earthquake-resistant structure for a pedestrian bridge using a steel pipe girder including a stud frame.
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