KR20130075587A - Construction method of modular bridge girder - Google Patents

Construction method of modular bridge girder Download PDF

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Publication number
KR20130075587A
KR20130075587A KR1020110143988A KR20110143988A KR20130075587A KR 20130075587 A KR20130075587 A KR 20130075587A KR 1020110143988 A KR1020110143988 A KR 1020110143988A KR 20110143988 A KR20110143988 A KR 20110143988A KR 20130075587 A KR20130075587 A KR 20130075587A
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South Korea
Prior art keywords
girder
girders
construction method
modular bridge
modular
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KR1020110143988A
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Korean (ko)
Inventor
김진국
이필구
조광일
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재단법인 포항산업과학연구원
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Priority to KR1020110143988A priority Critical patent/KR20130075587A/en
Publication of KR20130075587A publication Critical patent/KR20130075587A/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2101/00—Material constitution of bridges
    • E01D2101/30—Metal

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

Modular bridge girder construction method is simplified in which the construction process is simplified.
The disclosed modular bridge girder construction method includes a modular bridge girder construction method for constructing a bridge by longitudinally combining a plurality of modular girders, comprising: loading a plurality of girders overlapping the transport means; By using a transport means equipped with a crane boom, the step of supporting by the cable of the crane boom on the transport means to move to the rear of the transport means one by one from the girder stacked on top of the plurality of overlapping girders and then coupled A girder assembly step of repeatedly combining a plurality of the girders; And installing an assembly in which a plurality of the girders are coupled to the piers.

Figure P1020110143988

Description

Construction method of modular bridge girder

The present invention relates to a method for constructing a modular bridge girder, and more particularly, to a method for constructing a modular bridge girder with a simplified construction process.

Bridges can be divided into bridges, that is, between bridges and bridges, in the case of bridges in the middle, between bridges and bridges, or between bridges and bridges.

In general, the bridge between the small and medium is about 10m to 35m, the structure is simple, the site work is easy to reduce the site construction period, it is required to minimize the maintenance of the structure. In addition, the height of the girder, that is, the low profile, is preferred in order to secure the flow area of the lower surface of the bridge in preparation for flooding during the passage of the river.

Conventionally, the type of bridge that is widely applied is a composite bridge of concrete girder and concrete deck or a composite bridge of steel girder and concrete deck.

Among these, the composite bridge of the steel girder and the concrete slab has a structure using a steel box-type bridge girder, the steel box-type bridge girder is a method of combining the steel plate to be box-shaped by means of welding, etc., the upper side is opened It is implemented in the open cross-sectional box shape of the form, and the closed cross-sectional box shape of the closed form.

In general, the open side box type has the advantage of maximizing the efficiency of the upper flange integrated with the floor top plate and reducing the amount of work and the number of members in the closed space. As an alternative, it is being installed more frequently outside the country.

There is also a method of constructing such steel girders in a modular fashion. Such a modular bridge is a technology that manufactures the girder of the bridge through simple assembly by transporting a standardized module manufactured in advance as a block to the field.

In constructing such a modular bridge girder, first, the girder manufactured at the factory is transported-> mounted on the site floor-> girder assembly on the site floor-> the assembled girder is mounted on the pier.

However, as shown in FIG. 1A, the conventional modular bridge girders 10 construction method carries the girder 10 to the vehicle 50 to the site and then mounts it on the site floor to connect the girders 10 to the plate 20. Assembled through), where a separate hypothesis support 40 is required to flatten the floor.

In addition, as shown in Figure 1b, the heavy girder 10 of about 12 to 15m in length, 3m in width to get off the floor and then assembled, and mounting the assembled girder 10 on the piers 70 Since through, the movement of the girder 10 increases.

For this reason, the construction stage of the modular bridge girders 10 increases, there is a disadvantage that the air is long.

The present invention has been made to solve at least some of the problems of the prior art, as an aspect, it is an object of the present invention to provide a method for constructing a modular bridge girder that can simplify the construction process and shorten the construction period.

As one aspect for achieving at least some of the above objects, the present invention is a modular bridge girder construction method for constructing a bridge by longitudinally combining a plurality of modular girders, a plurality of girders overlapping the conveying means Loading; By using a transport means equipped with a crane boom, the step of supporting by the cable of the crane boom on the transport means to move to the rear of the transport means one by one from the girder stacked on top of the plurality of overlapping girders and then coupled A girder assembly step of repeatedly combining a plurality of the girders; And installing an assembly in which a plurality of said girders are coupled to a piers.

Preferably, the girder assembly step of moving the first girder such that the front end of the first girder stacked on the top of the plurality of overlapping girders is located at the rear end of the second girder loaded directly below the first girder. ; Adjusting the height of the first girder and the second girder equally; And coupling the front end of the first girder and the rear end of the second girder to a joint member.

Also preferably, after coupling the first girder and the second girder, the first girder and the second girder are positioned at a rear end of the third girder loaded directly below the second girder. Moving the assembly; Adjusting heights of the first girder, the second girder assembly, and the third girder equally; And combining the front end of the second girder and the rear end of the third girder with a joint member.

More preferably, the girder may be U-shaped in cross section.

Also preferably, the girder assembly step may move the girder by using a horizontal moving means which is provided in the transport means and pushes the girder to the rear of the transport means.

More preferably, the horizontal moving means may be movable up and down.

Also preferably, the horizontal movement means may be composed of a multi-stage cylinder.

Also preferably, the girder assembly step may adjust the height of the girder by using a leveler provided in the transport means.

Also preferably, the girder loading step may allow a plurality of girder overlapping each other through a plurality of support members arranged on the bottom of the girder.

On the other hand, the joint member may be attached to the rear end of the girder before the girder assembly step.

Preferably, the joint member may be bolted, welded or bolted and welded to the girder.

According to one embodiment of the present invention having such a configuration, it is possible to assemble a plurality of girders on the conveying means to simplify the construction process at the construction site, it is possible to obtain the effect of shortening the construction period.

1A is a schematic diagram illustrating a conventional assembly method for assembling a plurality of modular bridge girders.
1B is a schematic view showing a state in which an assembled modular bridge girder is mounted on a bridge;
Figure 2a is a schematic diagram showing the girder transport step of the modular bridge girder construction method according to an embodiment of the present invention.
Figure 2b is a schematic diagram showing the girder assembly step of the modular bridge girder construction method according to an embodiment of the present invention.
Figure 2c is a schematic diagram showing the girder assembly step of the modular bridge girder construction method according to an embodiment of the present invention.
Figure 3 is a perspective view showing a plurality of girders superimposed in a method for constructing a modular bridge girder according to an embodiment of the present invention.
Figure 4 is a plan view showing an embodiment of the joint portion of the girder used in the modular bridge girder construction method according to an embodiment of the present invention.
5 is a plan view showing another embodiment of the joint portion of the girder used in the modular bridge girder construction method according to an embodiment of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Furthermore, the singular forms "a", "an," and "the" include plural referents unless the context clearly dictates otherwise.

In this specification, terms such as " comprise ", " comprise ", and " have "mean that there exist features, numbers, steps, operations, elements, parts, And should not be construed to preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

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

First, a method for constructing a modular bridge girder according to an embodiment of the present invention will be described with reference to FIGS. 2A to 2C. 2a to 2c schematically illustrate the steps of transporting and assembling the girder in the modular bridge girder construction method according to an embodiment of the present invention.

As shown in Figure 2a, in the construction method of the modular bridge girders 110 according to an embodiment of the present invention, a plurality of girders 110 can be superimposed on the conveying means 300 and then transported to the construction site have.

In one embodiment, the girder 110 may be manufactured in a standardized module, and a plurality of girders 110 may be combined in the longitudinal direction to constitute the girder 110 of the bridge.

Here, the girder 110 is formed with a joint portion 112 at the front and rear end portions to be coupled to the other girder 110 in the longitudinal direction, the joint portion 112, a plurality of joints for attachment 120 to be described later. The bolt coupling hole 114 is formed.

In addition, in one embodiment, as shown in Figure 2a so that the plurality of girders 110 can be coupled after moving only the girder 110 in the upper state in the state of being superimposed on the carrying means 300 during transportation The joint part 112 may be loaded so as not to be covered by the girder 110 loaded below.

That is, the plurality of overlapping girders 110 may be stacked to expose the joint 112 so that the joint member 120 may be attached to the bolt coupling holes 114 formed at the rear ends of the girders 110.

In addition, the bottom girder 110 may be loaded on the support neck 360 provided at the bottom of the loading unit of the carrying unit 300 for ease of movement.

On the other hand, in the construction method of the modular bridge girder 110 according to an embodiment of the present invention, as shown in FIG. The present invention is not limited thereto, and various types of girders 110 may be used.

In addition, in one embodiment, the girder 110 having a U-shaped cross section has a separate supporting member 400 at the bottom of each girder 110 such that a plurality of overlapping girders 110 are spaced from each other when the plurality of overlapping girders 110 overlap each other. Can be arranged.

Here, the support member 400 may be composed of a cylindrical member having a low friction so that it is easy to move when the girder 110 mounted on the top is moved in the longitudinal direction.

In one embodiment, the plurality of girders 110 having the same shape through the support member 400 can be prevented from being in close contact so that the sliding movement in the longitudinal direction is impossible.

On the other hand, as shown in Figure 2b, the plurality of girders 110 carried by the conveying means 300 may be assembled on the conveying means (300). In this case, the plurality of girders 110 are moved to the rear of the transport means 300 one by one from the girder 110 stacked on the top of the plurality of overlapping girders 110, and are combined, and repeating the steps of combining one by one Girder 110 can be combined as many times as necessary.

For example, the first girder 110-1 loaded on the top of the plurality of girders 110 has a front end at a rear end of the second girder 110-2 loaded immediately below the first girder 110-1. Is moved to position.

After the first girder 110-1 is moved, the heights of the first girder 110-1 and the second girder 110-2 are equally adjusted while keeping the first girder 110-1 horizontal. . That is, the first girder 110-1 to attach the joint member 120 made of a steel plate to the joint 112 of the front end of the first girder 110-1 and the rear end of the second girder 110-2. ) And the rear end of the second girder (110-2) abut.

In the state where the front end of the first girder 110-1 and the rear end of the second girder 110-2 abut, the joint member 120 is attached to the first girder 110-1 and the second girder 110-2. Can be combined.

For such an assembly process, a crane boom 310 may be provided in the transport means 300 used in the method for constructing the modular bridge girder 110 according to an embodiment of the present invention, and the girder 110 may be a crane boom. Supported by the cable 320 of 310 may be moved and fixed.

In one embodiment, the girder 110 may be supported by the crane boom 310 via a clamp 330 fastened to the rear end. In the above example, the clamp 330 may be fastened to an upper portion of the rear end of the first girder 110-1, and the cable 320 of the crane boom 310 supports the movement of the first girder 110-1. can do.

Here, the crane boom 310 can adjust the length of the cable 320, can support the girder 110 by tensioning the cable 320, the girder 110 moved by adjusting the length of the cable 320 ) Can be adjusted horizontally.

In addition, in one embodiment, the conveying means 300 may be provided with a horizontal moving means 340 to move by moving the girder 110 to the rear. The horizontal moving means 340 is provided at the front of the girders 110 loading portion of the carrying means 300 to parallelly move the loaded girders 110 one by one according to the user's operation.

The horizontal moving means 340 may be configured to be movable up and down to move the plurality of overlapping girders 110 one by one.

In order to implement such an operation, the horizontal moving unit 340 may be configured as a multistage cylinder in one embodiment, and the maximum extension length of the multistage cylinder may correspond to the length of the girder 110. However, since the horizontal moving means 340 is sufficient to be configured to move the girder 110 in parallel, it is not limited to the multi-stage cylinder, and may have other various configurations.

In addition, although not shown, the horizontal movement means 340 may apply a force to the body of the girder 110 by using a separate member capable of supporting the front end of the girder 110.

On the other hand, in one embodiment the conveying means 300 may be provided with a leveler 350 for adjusting the height of the girder 110. The leveler 350 may support the bottom of the front joint 112 of the moved girder 110 and adjust the height of the girder 110 to be connected. To this end, in one embodiment leveler 350 may be configured as a jack (jack).

In the above-described example, the leveler 350 may be provided to support the front lower end of the first girder 110-1, and the user may manually or automatically adjust the leveler 350 to load the second girder ( 110-2) it is possible to match the height of the front end of the first girder (110-1) to the height of the rear end.

In the step of assembling the girder 110 using such a configuration, first, the horizontal moving means 340 is moved to the height of the first girder 110-1 loaded on the top, and then the first girder 110-1 is moved. Push it backwards. In this case, the cable 320 may support the rear end of the first girder 110-1 and maintain the horizontality of the first girder 110-1.

The horizontal moving means 340 pushes the first girder 110-1 to the rear end of the second girder 110-2, and the moved first girder 110-1 adjusts the height through the leveler 350. Can be.

Through this, the front end of the first girder (110-1) and the rear end of the second girder (110-2) can be in contact, the joint of the first girder (110-1) and the second girder (110-2). The coupling member 120 may be coupled to the portion 112.

Meanwhile, as shown in FIG. 2C, after the first girder 110-1 and the second girder 110-2 are coupled, the second girder 110-2 is immediately connected to the second girder 110-2. The third girder 110-3, which is loaded below, may be coupled.

In more detail, the first girder 110-1 and the second girder 110-2 after the assembling of the first girder 110-1 and the second girder 110-2 described with reference to FIG. 2B. The assembly is moved to be located at the rear end of the third girder 110-3. Here, the movement of the first girder 110-1 and the second girder 110-2 assembly may be performed through the horizontal moving means 340.

Here, since the first girder 110-1 and the second girder 110-2 assembly are already coupled, the first girder 110-1 and the second girder 110-2 may be integrally moved, and the first girder 110-1 and the second girder 110 are moved. -2) the assembly may be adjusted to be equal to the height of the third girder 110-3. In this case, height adjustment may be performed through the leveler 350.

Subsequently, similar to the assembling process of the first girder 110-1 and the second girder 110-2 described with reference to FIG. 2B, the front end of the second girder 110-2 and the third girder 110-3 are provided. The rear ends of the coupling member 120 may be coupled to each other.

Through such a process, the plurality of girders 110 in the modular bridge girder construction method according to an embodiment of the present invention can be assembled on the conveying means (300).

In addition, although one embodiment has been described a case of assembling the three girders 110, it is apparent that the number of girders 110 can be assembled without being limited thereto.

Next, with reference to Figures 4 and 5 will be described with respect to the joint 112 of the girder 110 used in the method of construction of the modular bridge girder 110 according to an embodiment of the present invention.

4 and 5, in one embodiment, the rear end of the girder 110 may be attached to the joint member 120 before the assembling step of the girder 110.

That is, a joint member 120 is attached to the joint 112 of the rear end of the girder 110, and the front end of the other girder 110 coupled thereto may be coupled to the joint member 120 that is already attached. .

In this case, after the girder 110 and the girder 110 are disposed, only the girder 110 is assembled to the joint member 120 that is already attached to one side girder 110 without assembling the joint member 120. Since the assembly process of the girder 110 can be simplified.

In addition, it is possible to carry a large weight of the joint member 120 integrally with the girder 110, it is possible to obtain the effect of reducing the arrangement step of the joint member 120 during assembly.

In one embodiment, the joint member 120 may be attached to the girder 110 by bolted, welded or bolted and welded together in the factory manufacturing step of the girder 110.

Meanwhile, as illustrated in FIG. 4, the joint member 120 may be attached only to the inner side surface of the girder 110, and as illustrated in FIG. 5, the joint member 120 may be attached to the inner side and the outer side surface of the girder 110. ) May be attached.

Unlike this, although not shown, a configuration in which only the fastening bolts 130 are provided for coupling the joint member 120 is possible.

On the other hand, when the joint member 120 is pre-attached to both front and rear ends of the girder 110, a problem may occur when a plurality of girders 110 overlap, as shown in Figure 2a The joint member 120 may be pre-attached to only one of the rear end and the front end of the girder 110 so that the girder 110 may be loaded while the joint 112 of the girder 110 is exposed.

In addition, when the joint member 120 is pre-attached to the rear end of the girder 110, the fastening bolt 130 is so that the head is disposed on the inner surface of the girder 110 so as not to interfere with the overlapping girder 110. It is preferred to be fastened.

On the other hand, when the joint member 120 is pre-attached to the front end of the girder 110, the fastening bolt 130 is so that the head portion is disposed on the outer surface of the girder 110 so as not to interfere with the overlapping girder 110. It is preferred to be fastened.

In addition, in this case, the gap between the overlapped joint member 120 and the thickness of the bolt between the overlapping girders 110 may be secured through the support member 400 described with reference to FIG. 3.

While the present invention has been particularly shown and described with reference to particular embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention as defined by the following claims I would like to make it clear.

110: girder 112: joint
114: bolt coupling hole 120: joint member
130: fastening bolt 300: transport means
310: crane boom 320: cable
330: clamp 340: horizontal movement means
350: Leveler 360: Support
400: support member

Claims (11)

In the modular bridge girder construction method for constructing a bridge by combining a plurality of modular girders in the longitudinal direction,
Superimposing a plurality of girders on the vehicle;
By using a transport means equipped with a crane boom, the step of supporting by the cable of the crane boom on the transport means to move to the rear of the transport means one by one from the girder stacked on top of the plurality of overlapping girders and then coupled A girder assembly step of repeatedly combining a plurality of the girders; And
Installing a plurality of the girder combined assemblies in the piers;
Modular bridge girder construction method comprising a. The method of claim 1,
The girder assembly step,
Moving the first girder such that a front end of the first girder stacked on top of the plurality of overlapping girders is located at a rear end of the second girder loaded directly below the first girder;
Adjusting the height of the first girder and the second girder equally; And
Coupling the front end of the first girder and the rear end of the second girder to a joint member;
Modular bridge girder construction method comprising a. The method of claim 2,
After combining the first girder and the second girder,
Moving the first girder and the second girder assembly to position the first girder and the second girder assembly at a rear end of the third girder loaded directly below the second girder;
Adjusting heights of the first girder, the second girder assembly, and the third girder equally; And
Coupling the front end of the second girder and the rear end of the third girder to a joint member;
Modular bridge girder construction method further comprising a. The method of claim 1,
The girder is a modular bridge girder construction method, characterized in that the cross-section U-shaped. The method of claim 1,
The girder assembly step,
Modular bridge girder construction method characterized in that for moving the girder by using a horizontal moving means provided in the transport means to push the girder to the rear of the transport means. The method of claim 5,
Modular bridge girder construction method characterized in that the horizontal movement means is movable up and down. The method of claim 5,
The horizontal moving means is a modular bridge girder construction method, characterized in that consisting of a multi-stage cylinder. The method of claim 2,
The girder assembly step,
Modular bridge girder construction method characterized in that for adjusting the height of the girder using a leveler provided in the transport means. The method of claim 1,
The girder loading step,
And a plurality of said girders overlapping each other through a plurality of supporting members arranged on the bottom of said girders. The method of claim 2,
Before the girder assembly step,
And the joint member is attached to the rear end of the girder. The method of claim 10,
The joint member is bolted, welded or bolted and welded to the girder modular bridge construction method characterized in that the coupling.
KR1020110143988A 2011-12-27 2011-12-27 Construction method of modular bridge girder KR20130075587A (en)

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Application Number Priority Date Filing Date Title
KR1020110143988A KR20130075587A (en) 2011-12-27 2011-12-27 Construction method of modular bridge girder

Publications (1)

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KR20130075587A true KR20130075587A (en) 2013-07-05

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