KR102341094B1 - Construction methods for connection part of section variable modular pipe girder system - Google Patents

Abstract

The present invention relates to a connection part structure of a pipe-flange girder system with variable designs for each section and a construction technology thereof, and more specifically, to a synthetic girder system which is installed between pillars at both sides spaced apart from each other by a predetermined distance in the longitudinal direction of respective foundation concrete installed on both sides of a road and constituted in a vertical direction, and is constituted by coupling a flange with an abdominal plate. A modular girder system with an easily-changeable cross-section is characterized by comprising: a flange part provided on an upper end between the pillars at both sides, and including upper flange parts separately arranged in the transverse direction and lower flange parts spaced apart from lower sides of the upper flange parts by a specific distance and provided between the pillars at both sides; and an abdominal plate structure including an upper end member inserted into the outer side of the upper flange part, a lower end member inserted into the outer side of the lower flange part, and the abdominal plate coupled between the upper end member and the lower end member.

Description

Modular girder system with easy cross-section and construction method thereof {Construction methods for connection part of section variable modular pipe girder system}

The present invention relates to a connection structure of a pipe-flange girder system capable of variable design for each section and a construction technology thereof. This patent was carried out with the support of the Ministry of Land, Infrastructure and Transport/Land Transportation Science and Technology Promotion Agency (task number 20CTAP-C152291-02).

In general, high-rise buildings constructed in downtown areas and residential areas are usually adjacent to roads and are usually exposed from vehicle noise generated on these adjacent roads.

In order to block or absorb the noise inside the road, various blocking walls or sound-absorbing walls are installed on the side of the road to prevent the noise inside the road from directly affecting the building. Due to limitations, there is a problem that it is not safe from noise inside the road from a certain floor height or more.

Therefore, a sound-insulating wall or sound-insulating tunnel is installed to maintain a comfortable residential environment by blocking the transmission of noise generated during the driving process of the vehicle to the residential area.

The sound insulation board applied to these sound insulation facilities uses an opaque material to cover harmful facilities, but by using a sound insulation board made of a transparent material that allows the natural scenery of the outside to be seen naturally, light, etc. can be easily transmitted to provide a comfortable living environment. is a trend that

Therefore, as described above, a tunnel-type soundproofing facility is applied to a downtown area or residential area where high-rise buildings are dense. At the same time, it effectively absorbs the noise inside the road and reduces the driving noise that affects the driver.

In the tunnel-type sound insulation wall described above, when the soundproof panel is installed, the posts are installed at regular intervals in the middle of the upper part of the foundation, the soundproof panels are installed between these posts in turn, and the finish cover is installed on the outside of the soundproof panel to improve the appearance. By doing so, a tunnel-type soundproof wall is being constructed.

However, when constructing such a conventional tunnel-type soundproof wall, the roof structure is installed between the posts and the posts after they are installed along the road to have a certain interval in a state in which the posts are disposed opposite to each other. There is a problem in that it takes a lot of time and effort to construct a tunnel-type soundproof wall because it is difficult to install a roof structure between the posts.

In addition, since the roof structure is formed to have a simple arch shape, structural stability is lowered when external forces such as snow or wind act, so it cannot withstand the load and the tunnel-type soundproof wall is damaged, requiring a lot of time and effort for maintenance and repair. There is a problem that

In addition, in the prior art described above, the overall weight of the facility is increased by requiring an additional configuration such as a square frame and a fixed frame surrounding the periphery of the panel for installation of the transparent panel, and the frame structure impairs the aesthetics and view. There were problems such as

1 is a perspective view of a girder structure 1 for a conventional sound insulation tunnel. 1, in addition, the conventional girder structure for sound insulation tunnel (1) increases the weight by using the I-beam (2), or the H-beam as a roof structure between the posts (10) and the posts (10). And, the visibility of the driver by the web portion of the beam 2, the wind resistance of the girder is increased, and there is a problem of poor ventilation.

The structure of H-beam and I-beam composed of flange-web is a stable structure that has been proven mechanically and empirically. However, in the case of the existing H-beam girder, a single section for maximum member force was selected and designed, so there was a problem in that it was not possible to change the section for the required strength for each section.

Republic of Korea Patent Publication 10-2018-0118414 Republic of Korea Patent Registration 10-1896278

Therefore, the present invention has been devised to solve the problems of the prior art, and according to an embodiment of the present invention, a steel pipe-abdominal plate composite girder structure system is composed of an upper and lower ready-made steel pipe and an atypical abdominal plate connecting them, , In the case of the existing H-beam girder, a single cross-section for maximum member force is selected and designed, whereas the girder system according to the present invention can be designed by selecting the cross-section for the required strength for each section by selecting the dimensions of the steel pipe and the abdominal plate, i.e. The purpose of this is to provide a connection structure for a steel pipe modular girder system with an easy cross-section that can be applied with different cross-sections for flanges and abdominal plates according to the design load for each section, and a construction method thereof.

And, according to the embodiment of the present invention, a steel pipe composite girder system borrowing the basic structure of an H-beam, or a high stress concentration at the edge of the abdominal plate-steel pipe joint, is reduced by increasing the rigidity of the flange-abdominal plate stress concentration member. The purpose is to provide a stable girder system that can be resolved.

In addition, according to an embodiment of the present invention, it is a modular method in which the flange and the abdominal plate structure of the flange-abdominal plate girder structure system are manufactured and fastened, respectively, and the cross-section of the flange and the dimensions of the abdominal plate for each section can be selected, respectively, the cross-section variable is easy An object of the present invention is to provide a connection structure of a steel pipe modular girder system and a construction method thereof.

According to an embodiment of the present invention, a steel pipe used as a flange can be used as a mass-produced ready-made steel pipe (KS D 3566 steel pipe for general structure) to achieve design easiness and cost reduction, and to connect the structure in the section where the abdominal plate is installed. An object of the present invention is to provide a connection part structure of a steel pipe modular girder system with an easy cross-section that can be used as a steel pipe and a construction method thereof.

And, unlike the existing H-beam structure, according to an embodiment of the present invention, it may have a modular form that allows one-to-one correspondence to the required strength for each section, and the abdominal plate structure functions as an original abdominal plate, and the section Accordingly, an object of the present invention is to provide a connection structure of a steel pipe modular girder system with an easy cross-section that can also serve as a connecting material, and a construction method thereof.

On the other hand, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned are clearly to those of ordinary skill in the art to which the present invention belongs from the description below. can be understood

An object of the present invention is a composite girder system comprising a flange and an abdominal plate coupled to each other, which is installed between both posts formed in the vertical direction at regular intervals in the longitudinal direction on each of the foundation concrete installed on both sides of the road, in which both sides It is provided in the upper end between the poles, the upper flange portion divided in the transverse direction, spaced a certain distance to the lower side of the upper flange portion, the flange portion comprising a lower flange portion provided between the two poles; and an upper member inserted outside the upper flange portion, a lower member inserted outside the lower flange portion, and an abdominal plate structure having an abdominal plate coupled between the upper member and the lower member; This can be achieved as an easy modular girder system.

And the abdominal plate structure may be characterized in that it is coupled to at least one of the non-connection portion between the flange portions and the connection portion between the flange portions.

In addition, the abdominal plate may be characterized in that the fillet is applied.

And the flange portion and the abdominal plate structure may be characterized in that members of different dimensions for each section can be applied.

In addition, it may be characterized in that a ring-shaped reinforcement is provided at both ends of at least one of the upper member and the lower member.

And the flange portion is configured to include an abdominal plate disposed to be spaced apart from each other at a specific distance between the upper and lower flanges, and the longitudinal connecting portion of the flange portion may be characterized in that the abdominal plate structure is coupled.

In addition, the abdominal plate structure and the flange portion may be characterized in that it is fastened through a bar screw and a bolt.

And it may be characterized in that the connection by filling the grout in the space between the abdominal plate structure and the flange portion.

In addition, it may be characterized in that the protrusion is formed on at least one of the inner surfaces of the upper and lower members of the grout filling portion and the outer surface of the flange portion.

And the upper flange portion, the lower flange portion, the upper end member, the lower end member may be characterized in that the steel pipe.

According to the connecting part structure of the steel pipe modular girder system with easy cross-section change according to an embodiment of the present invention and its construction method, it is a steel pipe-abdominal plate composite girder structure system, comprising an upper and lower ready-made steel pipe and an atypical abdominal plate connecting them, , In the case of the existing H-beam girder, a single cross-section for maximum member force is selected and designed, whereas the girder system according to the present invention can be designed by selecting the cross-section for the required strength for each section by selecting the dimensions of the steel pipe and the abdominal plate, i.e. , has the effect of applying different cross-sections to flanges and web plates according to the design load for each section.

And according to the connection part structure and the construction method of the steel pipe modular girder system with easy cross-section change according to the embodiment of the present invention, the steel pipe composite girder system borrowing the basic structure of the H-beam or the high-end plate-steel pipe junction corner Stress concentration has the effect of relieving stress concentration by increasing the rigidity of the flange-abdominal plate stress concentration member.

In addition, according to the connection part structure and the construction method of the steel pipe modular girder system with easy cross section change according to the embodiment of the present invention, it is a modular method for manufacturing and fastening the flanges and the abdominal plate structures of the flange-abdominal plate girder structure system, respectively, and section It has the advantage of being able to select the cross section of the star flange and the size of the abdomen plate, respectively.

According to the connection part structure of the modular girder system with an easy cross-section and its construction method according to the embodiment of the present invention, the steel pipe used as a flange uses a mass-produced ready-made steel pipe (KS D 3566 steel pipe for general structure) for ease of design It is possible to secure and reduce unit cost, and has the effect of utilizing the structure in the section where the abdominal plate is installed as a connection part.

And, unlike the existing H-beam structure, according to the connection part structure and the construction method of the steel pipe modular girder system with easy cross-section change according to the embodiment of the present invention, it can have a modular type that can provide one-to-one correspondence with the required strength for each section. There is, the abdominal plate structure, performs the function of the original abdominal plate, has the effect that can also perform the role as a connecting material depending on the section.

On the other hand, the effects obtainable in the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description. will be able

The following drawings attached to the present specification illustrate preferred embodiments of the present invention, and serve to further understand the technical spirit of the present invention together with the detailed description of the present invention, so that the present invention is limited only to the matters described in those drawings and should not be interpreted.
1 is a perspective view of a girder structure for a sound insulation tunnel using a conventional I-beam;
Figure 2a is a photo of the steel pipe-abdominal plate composite girder structure,
2b is a partial perspective view of a steel pipe-abdominal plate composite girder;
3 is a schematic view showing the stress concentration of a steel pipe having an opening - an abdominal plate composite girder;
4A is a front view of a steel pipe-abdominal plate composite girder having a joint portion;
Fig. 4b is a cross-sectional view taken along line AA of Fig. 4a;
5 is a bonsai front view of a steel pipe and an abdominal plate structure according to an embodiment of the present invention;
6 is a perspective view of an abdominal plate structure according to an embodiment of the present invention;
7 is a cross-sectional view of a combination of a steel pipe and an abdominal plate structure according to an embodiment of the present invention;
8 is a cross-sectional view of a state in which an abdominal plate structure is coupled to a connection section and a non-connection section according to an embodiment of the present invention;
Figure 9a is a cross-sectional view of a state in which the abdominal plate structure is coupled through the grout in the non-connection section according to the embodiment of the present invention;
Fig. 9b is a cross-sectional view taken along line BB of Fig. 9a;
Figure 9c is an enlarged cross-sectional view of the abdominal plate structure connection portion of Figure 9a;
10 is a cross-sectional view of a state in which the abdominal plate structure is coupled through a grout in a connection section and a non-connection section according to an embodiment of the present invention;
11 is a cross-sectional view showing a state in which the connection section of the steel pipe-abdominal plate module is coupled by the abdominal plate structure according to an embodiment of the present invention.

The above objects, other objects, features and advantages of the present invention will be easily understood through the following preferred embodiments in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided so that the disclosed subject matter may be thorough and complete, and that the spirit of the present invention may be sufficiently conveyed to those skilled in the art.

In this specification, when a component is referred to as being on another component, it means that it may be directly formed on the other component or a third component may be interposed therebetween. In addition, in the drawings, the thickness of the components is exaggerated for effective description of the technical content.

Embodiments described herein will be described with reference to cross-sectional and/or plan views, which are ideal illustrative views of the present invention. In the drawings, thicknesses of films and regions are exaggerated for effective description of technical content. Accordingly, the shape of the illustrative drawing may be modified due to manufacturing technology and/or tolerance. Therefore, embodiments of the present invention are not limited to the specific form shown, but also include changes in the form generated according to the manufacturing process. For example, the region shown at right angles may be rounded or have a predetermined curvature. Accordingly, the regions illustrated in the drawings have properties, and the shapes of the illustrated regions in the drawings are intended to illustrate specific shapes of regions of the device and not to limit the scope of the invention. In various embodiments of the present specification, terms such as first, second, etc. are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another. Embodiments described and illustrated herein also include complementary embodiments thereof.

The terminology used herein is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, the terms 'comprises' and/or 'comprising' do not exclude the presence or addition of one or more other components.

In describing the specific embodiments below, various specific contents have been prepared to more specifically describe the invention and help understanding. However, a reader having enough knowledge in this field to understand the present invention may recognize that it can be used without these various specific details. In some cases, it is mentioned in advance that parts that are commonly known and not largely related to the invention are not described in order to avoid confusion without any reason in describing the present invention.

Hereinafter, the configuration and function of a modular girder system with an easy cross-section according to an embodiment of the present invention will be described.

First, the girder system according to the embodiment of the present invention is basically a flange-corresponding to an abdominal plate composite girder system. Figure 2a shows a photograph of the steel pipe-abdominal plate composite girder structure, Figure 2b is a partial perspective view of the steel pipe-abdominal plate composite girder.

The composite girder 3 is installed between both sides of the post 10 configured in the vertical direction at regular intervals in the longitudinal direction to each of the foundation concrete installed on both sides of the road, and the flange 20 and the abdominal plate 50 are combined. is made up of

The flange portion 20 is provided at the upper end between the both sides of the struts 10 and is spaced apart from the upper flange portion 30 divided in the transverse direction at a specific distance to the lower side of the upper flange portion 30, and both sides of the struts (10) It is configured to include a lower side flange portion 40 provided therebetween. In addition, the upper and lower flange portions 30 and 40 may be formed of a steel pipe. And since the abdominal plate 50 is installed at a specific interval, the composite girder system 3 is configured to include an opening.

Steel is an isotropic material, and it is a material with sufficient manufacturability such as for altar and bonding, and is a member frequently used in construction, civil engineering and other fields.

Carbon steel pipe for general structure (KS D 3566) is a material used as a column, beam, and truss member depending on the situation, and its behavior as a compression member, tension member, and flexural member has been analyzed and verified.

The structure of H-beam and I-beam composed of flange-web is a stable structure that has been proven mechanically and empirically. In the embodiment of the present invention, as shown in FIGS. 2A and 2B, a steel pipe-abdominal plate composite girder structure system having an opening is composed of an upper and lower ready-made steel pipe 20 and an atypical abdominal plate 50 connecting them.

In the case of the existing H-beam girder, a single section for maximum member force is selected and designed, whereas the girder system according to the embodiment of the present invention can be designed by selecting the section for the required strength for each section by selecting the dimensions of the steel pipe and the abdominal plate. do. That is, according to the design load for each section, different cross sections can be applied to the flange and the abdominal plate depending on the section.

Figure 3 shows a schematic diagram showing the stress concentration of the steel pipe having an opening - a composite girder. The girder system according to the present invention is a structure that takes an opening unlike the existing H-beam girder. First, there is a stress concentration part at the joint of the steel pipe flange and the abdomen plate, and second, it requires connection due to the production unit of the ready-made steel pipe.

First, in the steel pipe composite girder system borrowing flange (steel pipe) and abdominal plate, high stress concentration appears at the edge of the abdominal plate-steel pipe joint. Stress concentration is an inevitable mechanical problem arising from the dimensional ratio of the members of the present structure.

Second, this girder system is designed by adopting a ready-made steel pipe as a structure corresponding to the flange. KS steel pipes are generally manufactured in units of 1 piece (about 6.0m), and when manufacturing long span structures such as girders for sound insulation tunnels, a steel pipe exceeding the basic length must be specially manufactured or an appropriate joint must be taken for each basic length.

In case of manufacturing girder for sound insulation tunnel, field welding is not possible according to the relevant design standards. In addition, in accordance with the Road Traffic Act, transportation of members longer than a certain length is prohibited, so on-site fastening is essential. Figure 4a shows a front view of a steel pipe-abdominal plate composite girder having a joint portion. And FIG. 4B is a cross-sectional view taken along line A-A of FIG. 4A. As shown in FIGS. 4A and 4B, the conventional steel pipe-module connection of the composite girder was connected through a joint part for connecting the steel pipe. The fastening method through the bolt and nut for the conventional steel pipe joint is easy to connect between plates, but there are some limitations when using a steel pipe like the corresponding structure. Soundproofing panels for soundproof tunnels use 1.0m, 2.0m, and 4.0m members depending on the type and workability of the panel, but generally use a 2.0m panel. Therefore, the installation interval of the abdominal plate of the girder system cannot exceed 4.0m, and 2.0m is mainly adopted. Therefore, an efficient connection structure is essential to adopt this girder system.

That is, the present invention proposes a stable girder system 100 in which stress concentration is eliminated through the increase in rigidity of the flange-abdominal plate stress concentration member.

5 is an exploded front view of a steel pipe and an abdominal plate structure according to an embodiment of the present invention. And FIG. 6 is a perspective view of the abdominal plate structure according to an embodiment of the present invention, and FIG. 7 is a cross-sectional view showing a combination of a steel pipe and an abdominal plate structure according to an embodiment of the present invention.

The upper and lower flange portions 30 and 40 according to an embodiment of the present invention may be made of a steel pipe, and may have different dimensions for each section and module. And according to the embodiment of the present invention is configured to include a separately manufactured abdominal plate structure (60).

Abdominal plate structure 60, as shown in Figure 6, the upper member 61 is inserted into the outer side of the upper flange part 30, the lower member 62 is inserted into the outer side of the lower flange part 40, and the upper member It may be configured to include an abdominal plate 63 coupled between the 61 and the lower member 62 .

That is, the girder system 100 is composed of a small ready-made steel pipe and an abdominal plate structure 60 that is arranged at regular intervals and serves as a connecting part according to a section.

The abdominal plate structure 60 is configured to be coupled to at least one of a non-connection section between the flange parts 20 and a connection section between the flange parts 20 . 8 is a cross-sectional view showing a state in which the abdominal plate structure is coupled to the connection section and the non-connection section according to an embodiment of the present invention.

According to an embodiment of the present invention, the abdominal plate section is separately manufactured, the inner diameter of the upper member 61 is matched with the outer diameter of the upper flange portion 30, and the inner diameter of the lower member 62 is adjusted to the lower flange portion 40 ) is matched with the outer diameter, and is configured to relieve stress concentration at the end by applying a fillet to the abdomen plate 63 .

In addition, both ends of each of the upper member 61 and the lower member 62 of the abdominal plate structure 60 are padded with a ring-shaped reinforcing material as necessary to implement sufficient rigidity.

And, as shown in FIG. 8, it can be seen that the structure can be completed by combining the steel pipe and the abdominal plate structure 60 in the connected section or the non-connected section. In order to fix the members to each other, an appropriate amount of bar screws and fastening members 80 such as bolts are arranged and fastened. When fastening, consider the behavior of the steel pipe in the relevant section and fasten it vertically and horizontally.

Also, it can be connected by filling with high-strength grout between the small steel pipe and the abdominal plate structure 60 . At this time, a protrusion 71 is formed on the surface of the steel pipe 20 and the abdominal plate structure 60 at the position where the grout is to be filled. With the structure of the present invention, it is possible to completely maintain the rigidity of the flanged steel pipe 20, and to freely select the section for each section.

Figure 9a is a cross-sectional view showing a state in which the abdominal plate structure is coupled through the grout in the non-connection section according to an embodiment of the present invention. And Figure 9b is a cross-sectional view showing the B-B of Figure 9a, Figure 9c is an enlarged cross-sectional view of the abdominal plate structure connecting portion of Figure 9a.

As shown in FIGS. 9a to 9c, it can be seen that the abdominal plate structure 60 according to the embodiment of the present invention can be integrated through the grouting 70 by inserting it into the unconnected section of the flange portion 20. have. At this time, as shown in FIG. 9c, a grout injection part 72 and a discharge part 73 may be provided in each of the upper member 61 and the lower member 62 of the abdominal plate structure 60, and the upper member ( 61) and the lower member 62, the inner surface and the outer surface of the upper flange portion 30 and the outer surface of the lower flange portion 30 of the portion to be grouted 70, the protrusion 71 is formed, integrated by the grouting (70) It can be seen that it can be configured to be easy.

In addition, Figure 10 is a cross-sectional view showing a state in which the abdominal plate structure is coupled through the grout in the connection section and the non-connection section according to an embodiment of the present invention. As shown in FIG. 10 , it can be seen that the abdominal plate structure 60 according to the embodiment of the present invention may be coupled through the grouting 70 for both the unconnected section and the connected section of the flange portion 20 .

And Figure 11 shows a cross-sectional view of a state in which the connection section of the steel pipe-abdominal plate module is coupled by the abdominal plate structure according to an embodiment of the present invention. 11, while using the conventional modular composite girder having an abdominal plate 50 between the upper and lower flange portions 30 and 40, the present invention with respect to the connection section of the modular composite girder It can be seen that by installing the abdominal plate structure 60 according to the embodiment, it can be connected through the grouting 70 .

In addition, in the apparatus and method described above, the configuration and method of the above-described embodiments are not limitedly applicable, but all or part of each embodiment is selectively combined so that various modifications can be made to the embodiments. may be configured.

1: Conventional girder structure for sound insulation tunnels
2:I beam
3: Flange-Abdominal Composite Girder System
10: holding
20: flange part
30: upper side flange part
40: lower string flange part
50: abdomen
60: Abdominal plate structure
61: upper member
62: lower member
63: abdominal plate
70: grout
71: protrusion
72: grout injection unit
73: grout discharge part
80: fastening member
100: Steel pipe modular girder system with easy cross-section

Claims (10)

In the composite girder system consisting of a flange and an abdominal plate coupled to each other, which is installed between the two posts configured in the vertical direction at regular intervals in the longitudinal direction to each of the foundation concrete installed on both sides of the road,
It is provided at the upper end between the two poles, and the upper flange portion divided in the transverse direction, spaced a certain distance to the lower side of the upper flange portion, the flange portion comprising a lower flange portion provided between the two poles; and
Containing; including;
The abdominal plate structure is coupled to at least one of a non-connection portion between the flange portions and a connection portion between the flange portions,
Filling and connecting the grout in the space between the abdominal plate structure and the flange portion,
A modular girder system with easy cross-section, characterized in that protrusions are formed on at least one of the inner surfaces of the upper and lower members of the grout filling portion and the outer surfaces of the flange.
delete The method of claim 1,
The abdominal plate is a modular girder system with easy cross-section, characterized in that a fillet is applied.
The method of claim 1,
Modular girder system with easy cross-section, characterized in that the flange portion and the abdominal plate structure can be applied to members of different dimensions for each section.
5. The method of claim 4,
A modular girder system with easy cross-section, characterized in that a ring-shaped reinforcement is provided at both ends of at least one of the upper member and the lower member.
The method of claim 1,
The flange portion is configured to include an abdominal plate disposed to be spaced apart from each other at a specific interval between the upper and lower flange portions, and the cross-sectional variable is characterized in that the abdominal plate structure is coupled to the longitudinal connection portion of the flange portion. Easy modular girder system.
The method of claim 1,
The modular girder system with easy cross-section, characterized in that the abdominal plate structure and the flange part are fastened through a bar screw and a bolt.
delete delete The method of claim 1,
The modular girder system with easy cross-section, characterized in that the upper flange portion, the lower flange portion, the upper member, and the lower member are steel pipes.

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