KR20220142045A - A temporary bridge structure, a temporary bridge including the same, and a temporary bridge construction method using the same - Google Patents

Abstract

A temporary bridge structure is disclosed. The temporary bridge structure according to one embodiment of the present invention has a predetermined length and width. The temporary bridge structure comprises: a first girder extending in a longitudinal direction of the temporary bridge structure; a second girder spaced apart from the first girder in a width direction of the temporary bridge structure; a plurality of crossbeams each of which has one end fixed to the first girder and the other end fixed to the second girder, and which are spaced apart from each other by a predetermined distance along the longitudinal direction of the temporary bridge structure; a plate including a lower surface part disposed on the crossbeams and a first sidewall part and a second sidewall part connected to both sides of the lower surface part, respectively; a pavement layer formed by curing a pavement material filled in a filling space formed between the first sidewall part and the second sidewall part; and at least one movement limiting member installed on the lower surface part to prevent movement of the pavement layer in the width direction after the same is cured, extending in a direction crossing the width direction, and protruding to a predetermined height toward the top of the lower surface part. The crossbeams may be in contact with at least a portion of the lower surface part to support the load of the plate and the pavement layer, and the lower surface part may be fixed to the crossbeams. According to the present invention, the temporary bridge structure can minimize the loss of a cross-section of a molding girder.

Description

TEMPORARY BRIDGE STRUCTURE, A TEMPORARY BRIDGE INCLUDING THE SAME, AND A TEMPORARY BRIDGE CONSTRUCTION METHOD USING THE SAME

The present invention relates to a temporary bridge structure, a temporary bridge including the same, and a method for constructing a temporary bridge using the same, and more particularly, to a temporary bridge structure including a plate and a pavement layer, a temporary bridge including the same, and a temporary bridge construction using the same it's about how

Recently, the demand for temporary bridges for vehicle bypass is increasing due to the re-installation or individual construction of bridges due to the deterioration of existing bridges.

However, in the case of the conventional temporary bridges, most of them are temporary bridges for construction, and the technical development for a dedicated temporary bridge for vehicle bypass for general passers is insufficient.

Specifically, in the case of existing temporary bridges, as shown in FIG. 1(a), most of the temporary bridges for construction in the form of installing a multilayer plate on a mold girder are being constructed for vehicle bypass. As such, when a temporary bridge for construction is used as a vehicle bypass, excessive noise is generated due to the poor flatness of the pavement plate without a pavement layer or the drivability of the vehicle is lowered, thereby causing continuous civil complaints.

To improve this, an asphalt concrete pavement layer is being constructed on the upper part of the cladding board. However, even in this case, the upper fixed load is increased due to the pavement layer, and accordingly, the size of the mold girder is enlarged and the quantity is increased, which may cause an increase in the construction cost. In addition, the prior art has a disadvantage in that it requires additional construction to close the gap between the cladding plates to prevent loss of the pavement layer through the cladding plates. In addition, as shown in FIG. 1( b ), the prior art has a problem of frequent maintenance due to severe rutting of the pavement layer after the installation of the pavement plate.

In consideration of the above-mentioned problem, it is necessary to develop a temporary bridge for vehicle bypass that can provide a pavement layer capable of resolving the backlogging phenomenon without using a multi-wall plate on the upper part of the bridge.

One embodiment of the present invention is to provide a temporary bridge structure capable of shortening the construction period and reducing the amount of construction by omitting the roof plate.

An embodiment of the present invention is to provide a temporary bridge structure that can minimize the loss of the cross section of the mold girder.

An embodiment of the present invention is to provide a temporary bridge structure that can minimize the plastic deformation of the pavement layer.

An embodiment of the present invention is to provide a temporary bridge structure that can be constructed on the site after pre-fabrication in a place spaced apart from the site.

According to an aspect of the present invention, there is provided a temporary bridge structure having a predetermined length and width, comprising: a first girder extending in the longitudinal direction of the temporary bridge structure; a second girder spaced apart from the first girder in the width direction of the temporary bridge structure; a plurality of crossbeams having one end fixed to the first girder and the other end fixed to the second girder, spaced apart from each other by a predetermined distance along the longitudinal direction of the temporary bridge structure; a plate having a lower surface disposed on the crossbeam and a first sidewall portion and a second sidewall portion respectively connected to both sides of the lower surface portion; a packaging layer formed by curing a packaging material filled in a filling space formed between the first sidewall portion and the second sidewall portion; and at least one movement limiting member installed on the lower surface portion to prevent the packaging layer from moving in the width direction after curing, extending in a direction crossing the width direction and projecting a predetermined height in the upper direction of the lower surface portion. Including, wherein the crossbeam is in contact with at least a portion of the lower surface portion to support the load of the plate and the pavement layer, the lower surface portion is provided with a temporary bridge structure fixed to the crossbeam.

In this case, the upper surface of the crossbeam and the upper surface of the first girder and the second girder may be disposed on the same plane.

In this case, the plate may be formed of FRP.

In this case, the first sidewall portion and the second sidewall portion may be formed by bending both sides of a flat plate to be integrally formed with the lower surface portion.

In this case, a first wall portion and a second wall portion connecting the first sidewall portion and the second sidewall portion may be disposed at both ends of the plate in the longitudinal direction so that the packaging material in the state before curing does not depart from the lower surface portion.

In this case, the movement limiting member is formed of L-shaped steel or C-shaped steel, and may be coupled using the cross beam and bolts.

In this case, an elastic member that protrudes to a height lower than a height of the first side wall portion while being higher than a protrusion height of the movement limiting member may be installed at a position adjacent to the movement limiting member.

According to another aspect of the present invention, as a temporary bridge structure having a predetermined length and width, a first girder extending in the longitudinal direction of the temporary bridge structure; a second girder spaced apart from the first girder in the width direction of the temporary bridge structure; a plurality of crossbeams having one end fixed to the first girder and the other end fixed to the second girder, spaced apart from each other by a predetermined distance along the longitudinal direction of the temporary bridge structure; a plate having a lower surface disposed on the crossbeam and a first sidewall portion and a second sidewall portion respectively connected to both sides of the lower surface portion; and a packaging layer formed by curing a packaging material filled in a filling space formed between the first sidewall portion and the second sidewall portion, wherein the plate protrudes upward to form irregularities in a portion of the lower surface portion. A temporary bridge structure is provided that is formed of a bent plate including a protrusion, the crossbeam is in contact with at least a portion of the lower surface portion to support the load of the plate and the pavement layer, and the lower surface portion is fixed to the crossbeam.

According to another aspect of the present invention, there is provided a temporary bridge in which a plurality of temporary bridge structures according to any one of the preceding claims are coupled in a longitudinal direction or a width direction of the temporary bridge structure.

According to another aspect of the present invention, there is provided a method for constructing a temporary bridge using the temporary bridge structure according to any one of the preceding claims, the method comprising the steps of: prefabricating a plurality of first temporary bridge structures; moving the plurality of pre-fabricated first temporary bridge structures to the site; and constructing a second temporary bridge structure in the field between the plurality of first temporary bridge structures is provided.

Temporary bridge structure according to an embodiment of the present invention can omit the conventional multilayer structure by forming a pavement layer based on a unique plate. Through this, the temporary bridge structure according to an embodiment of the present invention enables the construction of a temporary bridge having a low profile height and low weight.

Temporary bridge structure according to an embodiment of the present invention can minimize the problem of plastic deformation (Rutting) by limiting the width direction movement of the pavement layer by the side wall portion and the movement limiting member of the plate.

Since it is possible to connect the plate to the crossbeam instead of the girder, the temporary bridge structure according to an embodiment of the present invention has the advantage of minimizing the cross-sectional loss of the girder.

The temporary bridge structure according to an embodiment of the present invention can minimize the amount of work because each component can be coupled with a bolt, and construction and disassembly are easy.

The temporary bridge construction method according to an embodiment of the present invention has the advantage of being able to effectively construct a temporary bridge even when the working environment is poor because the temporary bridge structure can be manufactured at the workshop and then supplied to the required site for construction.

Figure 1 (a) is an image showing a construction site of a temporary bridge including a conventional multi-walled plate, Figure 1 (b) is an image showing an example of plastic deformation of a temporary bridge using a conventional multi-walled plate.
2 is a perspective view showing a temporary bridge structure according to an embodiment of the present invention.
Figure 3 is a saddle view showing the state of the temporary bridge structure shown in Figure 2 viewed from the bottom.
4 is an exploded perspective view illustrating the temporary bridge structure of FIG. 2 by disassembling it.
Figure 5 (a) is a cross-sectional view showing a cross-section of the temporary bridge structure according to an embodiment of the present invention, Figure 5 (b) is a cross-sectional view taken along the line aa' shown in Figure 5 (a) .
6 is a cross-sectional view showing a temporary bridge structure including a bent plate.
7 and 8 are cross-sectional views illustrating various examples of a temporary bridge structure including a movement limiting member.
9 and 10 are perspective and plan views showing a temporary bridge including a plurality of temporary bridge structures.
11 is a flowchart illustrating a method for constructing a temporary bridge according to an embodiment of the present invention.
12(a) to 12(d) are views sequentially illustrating the construction method of the temporary bridge of FIG. 11 .
13 is a flowchart illustrating a method for constructing a temporary bridge according to another embodiment of the present invention.
14 is a perspective view illustrating a temporary bridge constructed according to a method for constructing a temporary bridge according to another embodiment of the present invention.
15 is a flowchart illustrating a method for constructing a temporary bridge according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings, embodiments of the present invention will be described in detail so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and the same reference numerals are added to the same or similar components throughout the specification.

In this specification, unless otherwise specified, the longitudinal direction means the extension direction (A) of the temporary bridge structure shown in FIG. 2, and the width direction means the width direction (B) of the temporary bridge structure shown in FIG. .

Figure 1 (a) is an image showing a construction site of a temporary bridge including a conventional multi-walled plate, Figure 1 (b) is an image showing an example of plastic deformation of a temporary bridge using a conventional multi-walled plate. 2 is a perspective view showing a temporary bridge structure according to an embodiment of the present invention. Figure 3 is a saddle view showing the state of the temporary bridge structure shown in Figure 2 viewed from the bottom. 4 is an exploded perspective view illustrating the temporary bridge structure of FIG. 2 by disassembling it. Figure 5 (a) is a cross-sectional view showing a cross-section of a temporary bridge structure according to an embodiment of the present invention, Figure 5 (b) is a cross-sectional view taken along the line a-a' shown in Figure 5 (a). . 6 is a cross-sectional view showing a temporary bridge structure including a bent plate.

The temporary bridge structure 10 according to an embodiment of the present invention may be a temporary bridge constructed adjacent to the main bridge in order to temporarily provide a detour route for vehicles or pedestrians while the main bridge is being constructed. However, the application of the temporary bridge structure 10 according to an embodiment of the present invention is not limited to the temporary bridge, and may be used as a general bridge that can be used for a certain design period.

In this case, the temporary bridge structure 10 to be described later may mean a single temporary bridge whose construction has been completed by itself, or when a plurality of temporary bridge structures 10 are combined to form one temporary bridge, the temporary bridge Note that it can mean the basic unit of This will be described in detail through the corresponding description.

First, referring to FIGS. 2 to 4 , the temporary bridge structure 10 according to an embodiment of the present invention includes a first girder 20 , a second girder 30 , a crossbeam 40 , a plate 50 and a pavement. layer 60 .

First, the first girder 20 and the second girder 30 are structures in the form of beams, as shown in the drawings, and support the load of the plate 50 and the pavement layer 60 corresponding to the upper plate of the bridge. And it can perform a function of stably delivering it to the base structure (not shown).

In this case, the first girders 20 and the second girders 30 may be disposed to be spaced apart from each other at a predetermined interval in the width direction of the temporary bridge structure 10 . And the first girder 20 and the second girder 30 may have the same structure as each other. Therefore, in the following description, in order to avoid a duplicate description, the description of the second girder 30 will be replaced with the description of the first girder 20 unless otherwise specified.

In one embodiment of the present invention, the first girder 20 may extend in the longitudinal direction (A) of the temporary bridge structure (10).

At this time, the first girder 20 has flexural rigidity and torsional rigidity that can sufficiently withstand the fixed load by the plate 50 and the pavement layer 60 disposed on the upper part and the live load by the vehicle passing through the temporary bridge. can

As a non-limiting example, the first girder 20 may be formed of an I-beam or H-beam including the upper flange 21 , the lower flange 22 and the abdomen 23 . However, the type of the first girder 20 is not limited thereto, and various types of well-known steel materials may be applied. If the first girder 20 is formed of H-beams, various known H-beams such as H-beams in which the upper and lower portions are symmetrical, asymmetric H-beams, or patterned H-beams may be adopted.

In addition, the type of the first girder 20 is not limited to the steel girder, and a composite girder in which steel and various materials are synthesized may be applied according to design conditions.

In one embodiment of the present invention, referring back to Figure 4, the first girder 20 may include a coupling portion 25 for coupling of the crossbeam 40 to be described later on one side or both sides.

At this time, the coupling part 25 may be formed of a plate material perpendicular to the longitudinal direction of the first girder 20 as shown in the drawings. This coupling portion 25 may be integrally cast together with the first girder 20, or welded to the upper flange 21, the lower flange 22, or the abdomen 23 of the first girder 20. It can also be joined through

In addition, a coupling hole 26 penetrating the coupling part 25 in the longitudinal direction (A) may be formed in a portion of the coupling part 25 having a plate shape. Through this, the first girder 20 may receive a load from the crossbeam 40 by being coupled to the crossbeam 40 and bolts 91 to be described later. However, the coupling of the first girder 20 and the crossbeam 40 is not limited to bolt coupling, and may be coupled through welding if necessary.

At this time, a plurality of coupling portions 25 may be disposed to be spaced apart along the longitudinal direction A of the first girder 20 . That is, a plurality of crossbeams 40 may be connected along the longitudinal direction of the first girder 20 , and a coupling portion 25 may be disposed at each position corresponding to the connection point of the crossbeam 40 .

On the other hand, the coupling portion 25 may function not only as a function for coupling with the crossbeam 40 , but also function as a reinforcing material for reinforcing the rigidity of the first girder 20 by dispersing the load acting on the first girder 20 . .

The temporary bridge structure 10 according to an embodiment of the present invention may include a crossbeam 40 connecting the first girder 20 and the second girder 30 .

In this case, the crossbeam 40 may be formed of an I-beam or H-beam including a flange portion and an abdomen 41 to 43 similar to the first girder 20 as shown in FIG. 4 .

In one embodiment of the present invention, the crossbeam 40 is fixed to one end connected to the coupling portion 25 of the first girder 20, as shown in FIG. 2, the other end is the second girder 30 It may be connected to the coupling portion 25 of the fixed.

At this time, referring back to FIGS. 4 and 5 , the crossbeam 40 increases the height of the first girder 20 and the second girder 30 so as to be in contact with the lower surface portion 51 of the plate 50 located thereon. As a reference, it can be connected to the upper region.

Preferably, as shown in the drawing, the upper surface 41 of the crossbeam 40 and the upper surface of the first girder 20 (the upper surface of the upper flange 21) may be disposed on the same plane. Here, the meaning that the upper surface 41 of the crossbeam 40 and the upper surface of the first girder 20 are arranged on the same plane does not mean a complete plane in the mathematical sense, as shown in FIG. It may mean that the lower surface portion 51 of the plate 50 is arranged to be in contact with the first girder 20 and the crossbeam 40 at the same time.

As such, the crossbeam 40 of the temporary bridge structure 10 according to an embodiment of the present invention is disposed so as to be in contact with the lower surface portion 51 of the plate 50, unlike a conventional temporary bridge structure, the crossbeam 40 is The first girder 20 and the second girder 30 are not only responsible for distributing the lateral load, but the first girder 20 and the second girder 30 are fixed through the structure disposed on the upper part. This is to directly support the load. This will be described in more detail through the description of the plate 50 and the packaging layer 60 .

When the crossbeam 40 performing such a complex role includes a plurality of crossbeams 40, it may be disposed more adjacently in the longitudinal direction (A) as compared to a temporary bridge using a conventional multilayer plate. As a result, the load applied to the crossbeam 40 can be more effectively distributed.

In an embodiment of the present invention, a plurality of crossbeams 40 may be arranged to be spaced apart from each other along the longitudinal direction of the first girder 20 as shown in FIG. 4 . Through this, the plurality of crossbeams 40 may receive and distribute the load of each part of the plate 50 .

The temporary bridge structure 10 according to an embodiment of the present invention has a predetermined thickness to form a pavement layer 60 to be described later and a plate 50 disposed on the girders 20 and 30 and the crossbeam 40 . may include.

Specifically, referring to FIG. 4 , the plate 50 may include a lower surface portion 51 and a first sidewall portion 52 and a second sidewall portion 53 connected to both sides of the lower surface portion 51 , respectively. can

First, the lower surface 51 is a plate material having a predetermined area, a part or the whole is in contact with the crossbeam 40, the upper portion of the packaging material forming the packaging layer 60 may be filled.

As a specific example, the lower surface 51 may be formed of a flat plate material having no bending, that is, having a single plane, as shown in FIGS. 4 and 5 , to support the load generated by the packaging material. As described above, the load applied to the lower surface 51 may be relieved by being directly transmitted through the crossbeam 40 disposed below the load.

As another example, the lower surface 51 may be formed of a bent plate 56 including a protrusion 57 protruding upward to form an unevenness as shown in FIG. 6 .

In this case, the protrusion 57 may extend entirely along the longitudinal direction of the temporary bridge structure 10 , or may be formed only in a portion of the lengthwise direction of the temporary bridge structure 10 .

On the other hand, although the figure shows that the protrusion 57 includes a portion bent at a right angle, the shape of the protrusion 57 is not limited thereto, and an acute angle or an obtuse angle may be formed according to the design, or a predetermined curvature may be provided. It may be formed to include a curved portion to have. As such, when the protrusion 57 has a curved portion, it is possible to prevent an accident in which the tire of the vehicle is damaged by the protrusion 57 even if the pavement layer 60 is lost and the protrusion 57 is exposed to the outside. have.

As in the above-described example, when the lower surface portion 51 is formed of the bent plate 56, a portion of the crossbeam 40 is in contact with the crossbeam 40 and while transmitting the load to the crossbeam 40, the protrusion 57 protruding in the height direction. Accordingly, it is possible to reduce the amount of packaging material filled on the lower surface portion 51 . In addition, by limiting the movement of the packaging layer 60 in the cured state in the width direction, it is possible to reduce the plastic deformation (rutting, packing layer pushing phenomenon) of the packaging layer 60 without the movement limiting member 70 to be described later. As a result, it is possible to reduce the packaging layer 60 or the movement limiting member 70, and through this, it is possible to reduce the construction cost or the construction period, thereby obtaining an economic effect.

In one embodiment of the present invention, the plate 50 has a first side wall portion 52 and a second sidewall portion 52 on both sides of the lower surface portion 51 to limit the movement of the packaging material poured on the plate 50 in the width direction (B), respectively. The two sidewall parts 53 may be connected.

At this time, the first side wall portion 52 and the second side wall portion 53 are disposed to face each other as shown in the drawing, and may extend as a whole along the longitudinal direction of the temporary bridge structure 10 . In addition, the first side wall portion 52 and the second side wall portion 53 may form a filling space G having a U-shape so that the packaging material can be filled together with the above-described lower surface portion 51 .

At this time, the first side wall part 52 and the second side wall part 53 serve as a kind of shielding film when the fluid packing material is poured into the filling space G before it is hardened, so that the packing material is the temporary bridge structure 10 ) can be prevented from escaping to both sides. In addition, the pavement layer 60 in a cured state of the pavement material is also limited in the width direction by the first side wall part 52 and the second side wall part 53, so that the pavement layer 60 generated in a temporary bridge including a conventional deck plate ) can prevent plastic deformation (Rutting).

In one embodiment of the present invention, the above-described plate 50 may be formed of, for example, a steel sheet, wherein the first side wall portion 52 and the second side wall portion 53 press both sides of the steel sheet. By bending each through, it can be formed integrally with the lower surface portion 51 . In this case, the first side wall part 52 and the second side wall part 53 may be bent to form a right angle with the lower surface part 51 . However, the method of forming the side wall portions 52 and 53 is not limited thereto, and the side wall portions 52 and 53 are formed by joining or combining separate plates on both sides of the lower surface portion 51 through a welding or riveting process, etc., respectively. may be formed.

As another example, the plate 50 may be formed of FRP (Fiber Reinforced Plastic). Specifically, FRP may include CFRP (Carbon Fiber Reinforced Plastic), GFPR (Glass Fiber Reinforced Plastic), AFRP (Aramid Fiber Reinforced Plastic, Aramid Fiber Reinforced Plastic), etc. .

Although FRP has many functional qualities, it has not been applied to conventional temporary bridges due to its weakness to UV rays. However, in the case of the temporary bridge structure 10 according to an embodiment of the present invention, since most of the plate 50 is covered so as not to be exposed to the outside by the packaging material, exposure to UV can be avoided, so that the FRP plate ( 50) has the advantage that it can be used as a material.

In addition, FRP had a problem in that it was not easy to pour a separate paving material such as asphalt concrete on the upper side of the FRP due to the slippery surface of the friction coefficient. However, in the temporary bridge structure 10 according to an embodiment of the present invention, a separate movement limiting member 70 is installed on the lower surface of the plate 50 , or the plate 50 using the bent plate 56 . ), by forming a protruding structure on the lower surface portion, it is possible to easily pour the packaging material even if the plate 50 is formed of FRP material.

Through this, the temporary bridge structure 10 according to an embodiment of the present invention can secure high strength while having light weight and corrosion resistance, thereby forming a functionally excellent plate 50 . As a result, even though the temporary bridge structure is reused by repeating installation and dismantling, excellent durability can be maintained.

In one embodiment of the present invention, referring again to FIG. 4 , the plate 50 may include a first wall portion 54 and a second wall portion 55 at both ends in the longitudinal direction, respectively.

At this time, the first wall part 54 and the second wall part 55 are plates extending in the width direction of the temporary bridge structure 10, and, like the side wall parts 52 and 53, a fluid packing material is filled in the filling space (G). It can serve as a screen for confinement within.

At this time, the first wall portion 54 and the second wall portion 55 are disposed to face each other as shown in the drawing, are formed at the same height as the sidewall portions 52 and 53 to be connected to the sidewall portions 52 and 53 . can

At this time, the first wall portion 54 and the second wall portion 55 may be integrally formed with the lower surface portion 51 through a bending process for the plate-shaped steel plate, similarly to the side wall portions 52 and 53 .

Alternatively, the first wall part 54 and the second wall part 55 may be separately manufactured and then joined or combined with the lower surface part 51 and the side wall parts 52 and 53 through a welding or riveting process. In this case, the first wall portion 54 and the second wall portion 55 may be formed by a horizontal reinforcement 80 to be described later, which will be described with reference to the horizontal reinforcement 80 .

In an embodiment of the present invention, the plate 50 may be fixed to the crossbeam 40 . Specifically, referring to FIG. 5 , the lower surface 51 of the plate 50 may be fixed to the crossbeam 40 by a bolting process using bolts 92 .

This reveals a structural difference in the case of a conventional temporary bridge compared to fixing the girder only to the girder instead of the crossbeam. That is, the temporary bridge structure 10 according to an embodiment of the present invention, unlike the prior art, by fixing the plate 50 to the crossbeam 40, the load by the plate 50 and the pavement layer 60 is applied to the girder 20 , 30) can be effectively transmitted to the cross beam 40 side. In addition, the temporary bridge structure 10 according to an embodiment of the present invention can form a structurally more stable temporary bridge structure 10 by allowing the plate 50 and the crossbeam 40 to behave integrally. In addition, since the temporary bridge structure 10 according to an embodiment of the present invention can fix the plate 50 to the crossbeam 40 instead of the girders 20 and 30, the plate 50 on the side of the girders 20 and 30. It is possible to omit a separate drilling operation or welding for fixing the As a result, there is an advantage that can minimize the cross-sectional loss that can weaken the rigidity of the girder (20, 30).

7 and 8 are cross-sectional views illustrating various examples of a temporary bridge structure including a movement limiting member.

The temporary bridge structure 10 according to an embodiment of the present invention is a movement limiting member ( 70) may be included.

The movement limiting member 70 may divide the filling space G on the lower surface 51 into a plurality of spaces along the width direction, as shown in FIG. 7 . Through this, the movement of the hardened pavement layer 60 in the partitioned space in the width direction of the temporary bridge structure 10 by the movement limiting member 70 may be restricted. As a result, cracking or plastic deformation (Rutting) of the pavement layer 60 can be suppressed, and the discomfort or risk of a driver passing through the temporary bridge structure 10 can be minimized.

In more detail, the movement limiting member 70 may extend in the longitudinal direction A of the temporary bridge structure 10 and protrude a predetermined height in the upper direction of the lower surface portion 51 . Here, the length of the movement limiting member 70 may be less than or equal to the length of the temporary bridge structure 10 , and the protrusion height of the movement limiting member 70 may be lower than the first side wall part 52 and the second side wall part 53 . have.

As a specific example, the movement limiting member 70 may be formed of an L-shaped steel 71 formed by extending a predetermined length.

At this time, the L-shaped steel 71 passes through the lower surface portion 51 and the crossbeam 40 in a state where one surface is seated so as to face the lower surface portion 51 of the plate 50 as shown in FIG. 7(a). It may be fixed to the lower surface portion 51 and the crossbeam 40 by the bolt 92 .

On the other hand, the L-shaped steel 71 may be installed so that the bent portion is located on the upper portion (arranged in a 's' shape), as shown in FIG. 7(b). At this time, the L-shaped steel 71 may be fixed on the lower surface portion 51 through a welding process instead of a bolting process.

As another example, the movement limiting member 70 may be formed of a C-shaped steel as shown in FIG. At this time, the C-shaped steel may be fixed on the lower surface 51 of the plate through bolting or welding like the L-shaped.

In this way, when the movement limiting member 70 is formed of a C-shaped steel, it is possible to restrict the movement in the width direction of the packaging layer 60, and at the same time, it is possible to reduce the amount of packaging material poured like the above-described bending plate 56. There are advantages. In addition, unlike the L-shaped steel, sharp attachment can be minimized, so that even if the pavement layer is later lost and the movement limiting member 70 is exposed, the effect on the vehicle can be minimized.

On the other hand, although the figure shows only that the movement limiting member 70 is arranged in a form parallel to the longitudinal direction (A) of the temporary bridge structure, the arrangement of the movement limiting member 70 is not limited thereto, and the longitudinal direction (A) ) may be arranged obliquely to form a predetermined angle with respect to the.

In one embodiment of the present invention, referring again to FIG. 5 , an elastic member 73 formed of a material having elasticity may be installed at a position adjacent to the movement limiting member 70 .

At this time, since the elastic member 73 is formed of a material having elasticity, even if it is exposed to the outside due to the loss of the pavement layer 60 , it may not affect the tire of the vehicle passing the temporary bridge structure 10 .

And, the elastic member 73 may protrude higher than the movement limiting member 70, which is to allow the elastic member 73 to be exposed faster than the movement limiting member 70 when the packaging layer 60 is lost. it is for That is, the elastic member 73 can perform a function of warning in advance that the movement limiting member 70 having a sharp attachment and a hard rigidity will be exposed in the near future. Through this, the manager of the temporary bridge structure 10 can quickly repair the pavement layer 60 lost prior to exposure of the movement limiting member 70 .

In one embodiment of the present invention, the elastic member 73 may be formed to have a fluorescent color. Through this, the elastic member 73 can secure identification power when exposed to the outside, so that the loss of the packaging layer 60 can be quickly detected by an administrator even at night.

And the elastic member 73 may protrude to a lower height than the first side wall portion 52 . This is because, when the elastic member 73 is formed to be higher than the first side wall portion 52 , it cannot be completely buried by the packaging layer 60 , so it is impossible to accurately inform whether the packaging layer 60 is lost.

Meanwhile, in the drawings, the elastic member 73 is shown in the form of a plate perpendicular to the lower surface 51 of the plate 50, but the shape of the elastic member 73 is not limited thereto. 73) can be formed.

In one embodiment of the present invention, as a member for strengthening the cross-sectional rigidity of the plate 50 and the packaging layer 60 on the lower surface portion 51 of the plate 50, the horizontal reinforcement 80 may be installed.

As shown in FIG. 4, a plurality of horizontal stiffeners 80 may be disposed so as to be spaced apart from each other in a form perpendicular to the longitudinal direction A of the temporary bridge structure 10, and the plate 50 through a welding or bolting process. ) can be fixed to a part of Through this, it is possible to secure more stable rigidity against external forces applied to both sides of the temporary bridge structure 10 .

At this time, the horizontal reinforcement 80 may be installed also at both ends of the plate 50 in the longitudinal direction. As described above, the horizontal reinforcement 80 installed at both ends in the longitudinal direction functions as the first wall portion 54 or the second wall portion 55 of the plate 50, thereby filling the space G together with the side wall portions 52 and 53. ) can be formed. That is, the horizontal reinforcing material 80 installed at both ends in the longitudinal direction of the plate may simultaneously perform a function as the first wall 54 or the second wall 55 as well as a cross-sectional reinforcing function as the horizontal reinforcing material 80 .

As such, the temporary bridge structure 10 according to an embodiment of the present invention can omit the conventional multilayer structure by forming the pavement layer 60 based on the unique plate 50 . Through this, the temporary bridge structure 10 according to an embodiment of the present invention can form a temporary bridge having a low profile height by reducing the thickness of the multi-layered board, and the weight of the multi-layered board, which occupies a large part of the weight of the entire temporary bridge, can be reduced. Therefore, it is possible to reduce the weight of the temporary bridge and the amount of construction.

The temporary bridge structure 10 according to an embodiment of the present invention may include a pavement layer 60 formed by curing the pavement material in the filling space formed in the plate 50 .

At this time, after the packaging material is poured into the filling space as described above, the flow range is limited into the plate 50 by the side wall and the wall, and then, after a predetermined time has elapsed, the packaging material may be cured. By the packaging layer 60, the movement limiting member 70 and the elastic member 73 can be kept buried so as not to be exposed to the outside.

In one embodiment of the present invention, the pavement forming the pavement layer 60 may be asphalt or concrete, and various other known paving materials for roads may be used.

In one embodiment of the present invention, as described above, the packaging layer 60 is moved in the width direction (B) by the side wall portions 52 and 53 , the wall portions 54 and 55 or the movement limiting member 70 even after being cured. By limiting this as a whole, it is possible to minimize the problem of plastic deformation (rutting), which has mainly occurred in the conventional temporary bridge including the multi-wall plate.

In one embodiment of the present invention, the above-described temporary bridge structure 10 may perform the function of a temporary bridge by itself, but as shown in FIGS. 9 and 10, in the longitudinal direction (A) or the width direction (B) ), by combining a plurality of them with each other, a larger-scale temporary bridge 100 can be formed. Through this, a kind of modular construction of constructing the temporary bridge 100 is possible through the process of pre-fabricating a small-scale temporary bridge structure 10, which is easy to transport, on site, and then lifting it to the site and assembling it. It is possible to achieve the effect of reducing the construction cost.

In this case, the coupling between the respective temporary bridge structures 10 may be formed through a welding or bolting process through the coupling portion 25 provided on the girder 20 and 30 . Alternatively, a separate coupling part (not shown) for coupling between each temporary bridge structure 10 may be formed on a girder or a crossbeam.

On the other hand, when using the temporary bridge structure 10 according to an embodiment of the present invention, it is possible to form the entire temporary bridge 100 to have a skew angle. Here, the square (Skew Angle) means when the pavement layer of the temporary bridge 100 is formed obliquely in the form of a parallelogram as a whole as shown in FIGS. 9 and 10, the width direction (B) of the temporary bridge structure 10 and may mean a predetermined inclination angle with respect to a line parallel to the .

In this way, in order to form the temporary bridge 100 to have a square shape, the temporary bridge structure 10 constituting the temporary bridge may be arranged in a form that is gradually retreated in the longitudinal direction of the temporary bridge as it goes in the width direction of the temporary bridge. can

At this time, the distance at which the temporary bridge structure 10 retreats may be the same as the distance between the adjacent crossbeams. In this regard, as described above, in the temporary bridge structure 10 according to an embodiment of the present invention, the crossbeam 40 supports the load of the pavement layer 60 in addition to the lateral load distribution. can be placed close together. Therefore, according to the present invention, the distance at which the temporary bridge structure 10 retreats in the longitudinal direction (A) can be made close enough to reach 1 m as an exemplary example. As a result, when the temporary bridge structure 10 according to an embodiment of the present invention is used, there is an advantage that the temporary bridge 100 having a gentle square can be easily formed.

Hereinafter, a method of constructing a temporary bridge using the above-described temporary bridge structure 10 with reference to the drawings (hereinafter, 'provisional bridge construction method') will be described.

11 is a flowchart illustrating a method for constructing a temporary bridge according to an embodiment of the present invention. 12(a) to 12(d) are views sequentially illustrating the construction method of the temporary bridge of FIG. 11 . 13 is a flowchart illustrating a method for constructing a temporary bridge according to another embodiment of the present invention.

First, referring to FIGS. 11 and 12 , the temporary bridge construction method ( S10 ) according to an embodiment of the present invention includes the first girders 20 and the second girders 30 , the ground or the foundation structure (B) of the site. It may include a step (S11) of fixing to the. At this time, the first girder 20 and the second girder 30 may be spaced apart in consideration of the width direction (B) length of the crossbeam 40 .

Thereafter, both ends of the crossbeam 40 may be coupled to the coupling portions 25 of the girders 20 and 30 . (S12) At this time, if necessary, an appropriate number of crossbeams 40 may be spaced apart, and a known method such as bolting or welding may be used for coupling of the crossbeam 40 and the girders 20 and 30 .

Next, after placing the plate 50 on the crossbeam 40, the plate 50 may be fixed to the crossbeam 40 through the bolt 92 penetrating the plate and the crossbeam 40. (S13) ) For this, the plate 50 and the crossbeam 40 may have a through hole through which the bolt 92 can be passed in advance. Thereafter, the operation of fixing the movement limiting member 70 and the horizontal reinforcement 80 on the lower surface portion 51 of the plate may be performed.

Finally, the construction of the temporary bridge structure 10 can be completed by pouring a pavement material in the filling space G formed in the plate 50 and hardening it. (S14)

Such a temporary bridge structure 10 may be directly constructed on site, but may be constructed in advance and then transported to the site and then constructed through a lifting operation. (S20)

Specifically, referring to FIG. 13 , after the temporary bridge structure 10 is pre-fabricated at a place separated from the site (S21), the temporary bridge structure 10 in the pre-fabricated state is moved to the site, (S22) Finally, the step of fixing the lower part of the girders 20 and 30 to the ground or the foundation structure (B) of the site may be performed. Since it can be supplied to the required site after intensive production, it has the advantage of being able to effectively construct a temporary bridge even in a poor working environment.

14 is a perspective view illustrating a temporary bridge constructed according to a method for constructing a temporary bridge according to another embodiment of the present invention. 15 is a flowchart illustrating a method for constructing a temporary bridge according to another embodiment of the present invention.

14, according to the temporary bridge construction method (S30) according to another embodiment of the present invention, the pre-fabricated temporary bridge structure 11 (hereinafter, 'first temporary bridge structure') and the construction directly on site It can be constructed by using the temporary bridge structure 12 (hereinafter, 'second temporary bridge structure') together.

In this case, the plurality of first temporary bridge structures 11 may be pre-fabricated at a place away from the site, and then moved to the site (S31) and fixed to the ground or foundation structure. (S32) At this time, the plurality of first The temporary bridge structure 11 may be disposed to be spaced apart from each other in the width direction by the width direction length of the crossbeam 40 . After that, the second temporary bridge structure 12 can be directly constructed on site between the plurality of first temporary bridge structures 11. (S33) In this case, in the case of the second temporary bridge structure 12, Without installing a separate girder, the crossbeam 40 can be constructed by connecting the crossbeam 40 to the coupling portion of the girder of the first temporary bridge structure 11 disposed on both sides. After that, the plate 50 and the packaging layer 60 are sequentially formed on the crossbeam 40 . In this way, when constructing using the first temporary bridge structure 11 and the second temporary bridge structure 12 in a complex manner, one girder 20 forms the first temporary bridge structure 11 and the second temporary bridge structure ( 12) can all function as a girder. Through this, when viewed as the entire temporary bridge 100, it is possible to reduce the amount allocated to the girder.

As described above, the temporary bridge structure 10 according to an embodiment of the present invention uses a plate having a reduced thickness and weight, and omits a duplex plate, so that a temporary bridge having a low profile height and low weight can be constructed.

Specifically, when the unit weight is calculated assuming the construction of a temporary bridge having the same width of 4 m, in the present invention, in contrast to the need for a unit weight of 249.59 kg (per m) in the case of a temporary bridge construction using a conventional double decking In this case, effective construction of temporary bridges is possible only with a unit weight of 76 kg (per m), which is 30% of this.

On the other hand, in the case of the secondary moment of section, compared to the conventional bridge using double decking is 23,600 cm2 (per m), in the present invention, the secondary moment in section is rather reduced to 33,500 cm2 (per m) based on the complex role of the crossbeam. As it can be increased, it is possible to construct a temporary bridge that is structurally safer.

In addition, according to the present invention, compared to a temporary bridge including a conventional double-walled plate that structurally requires a lot of welding work, the girders, crossbeams, plates, and movement limiting members can all be combined with bolts, thereby minimizing the amount of work. and easy to construct and dismantle. In particular, when dismantling a temporary bridge, it can be replaced by releasing the bolt instead of cutting the welded part, so each component can be protected and reused accordingly.

Although one embodiment of the present invention has been described above, the spirit of the present invention is not limited to the embodiments presented herein, and those skilled in the art who understand the spirit of the present invention can add components within the scope of the same spirit. , changes, deletions, additions, etc. may easily suggest other embodiments, but this will also fall within the scope of the present invention.

10 Temporary bridge structure 20 First girder
30 Second girder 40 Crossbeam
50 Plates 60 Packing Layers
70 Movement limiting member 80 Horizontal stiffener
100 temporary bridge

Claims (10)

As a temporary bridge structure having a predetermined length and width,
a first girder extending in the longitudinal direction of the temporary bridge structure;
a second girder spaced apart from the first girder in the width direction of the temporary bridge structure;
a plurality of crossbeams having one end fixed to the first girder and the other end fixed to the second girder, spaced apart from each other by a predetermined distance along the longitudinal direction of the temporary bridge structure;
a plate having a lower surface disposed on the crossbeam and a first sidewall portion and a second sidewall portion respectively connected to both sides of the lower surface portion;
a packaging layer formed by curing a packaging material filled in a filling space formed between the first sidewall portion and the second sidewall portion; and
At least one movement limiting member installed on the lower surface to prevent the packaging layer from moving in the width direction after curing, extending in a direction crossing the width direction and projecting a predetermined height in the upper direction of the lower surface portion do,
The crossbeam is in contact with at least a portion of the lower surface portion to support the load of the plate and the pavement layer, and the lower surface portion is a temporary bridge structure fixed to the crossbeam. The method of claim 1,
The upper surface of the crossbeam and the upper surface of the first girder and the second girder are temporary bridge structures disposed on the same plane. The method of claim 1,
The plate is a temporary bridge structure formed of FRP. The method of claim 1,
The first side wall part and the second side wall part are temporary bridge structures formed by bending both sides of a flat plate so as to be integrally formed with the lower surface part. The method of claim 1,
A temporary bridge structure in which a first wall portion and a second wall portion connecting the first side wall portion and the second side wall portion, respectively, are disposed at both ends of the plate in the longitudinal direction so that the packaging material in the state before curing does not depart from the lower surface portion. The method of claim 1,
The movement limiting member is formed of L-shaped steel or C-shaped steel, and a temporary bridge structure coupled using the cross beam and bolts. The method of claim 1,
A temporary bridge structure in which an elastic member protruding to a height lower than the height of the first side wall portion while being higher than the protrusion height of the movement limiting member is installed at a position adjacent to the movement limiting member. As a temporary bridge structure having a predetermined length and width,
a first girder extending in the longitudinal direction of the temporary bridge structure;
a second girder spaced apart from the first girder in the width direction of the temporary bridge structure;
a plurality of crossbeams having one end fixed to the first girder and the other end fixed to the second girder, spaced apart from each other by a predetermined distance along the longitudinal direction of the temporary bridge structure;
a plate having a lower surface disposed on the crossbeam and a first sidewall portion and a second sidewall portion respectively connected to both sides of the lower surface portion; and
and a packaging layer formed by curing a packaging material filled in a filling space formed between the first sidewall portion and the second sidewall portion,
The plate is formed of a bent plate including a protrusion protruding upward to form an unevenness in a portion of the lower surface portion,
The crossbeam is in contact with at least a portion of the lower surface portion to support the load of the plate and the pavement layer, and the lower surface portion is a temporary bridge structure fixed to the crossbeam. A temporary bridge formed by combining a plurality of temporary bridge structures according to any one of claims 1 to 8 in the longitudinal direction or the width direction of the temporary bridge structure. A method for constructing a temporary bridge using the temporary bridge structure according to any one of claims 1 to 8, comprising:
pre-fabricating a plurality of first temporary bridge structures;
moving the plurality of pre-fabricated first temporary bridge structures to the site; and
A temporary bridge construction method comprising the step of constructing a second temporary bridge structure in the field between the plurality of first temporary bridge structures.

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