KR20100009017A - Assembled bridge and method for constucting an assembled bridge - Google Patents

Abstract

PURPOSE: A prefabricated bridge and a construction method thereof are provided to reinforce the section hardness of both sides of the bottom plate by inserting a protrusion between a base member and a support member. CONSTITUTION: A prefabricated bridge comprises a girder(11), a base member(32), and a support member(34). The girder is placed on the bridge post of the bridge side by side. The support member is placed on the both sides of an upper flange(11b) of the girder. A plurality of insertion parts are formed on the support member. The support member is placed between the base members. A joint assembly is connected to the girder upper flange.

Description

Assembly bridge and construction method {ASSEMBLED BRIDGE AND METHOD FOR CONSTUCTING AN ASSEMBLED BRIDGE}

The present invention relates to an assembled bridge and a construction method for ensuring the assemblability of the girder and the bottom plate installed on the bridge pier, and a girder assembly having an insertion portion formed in the support member of the coupling assembly connected to the upper flange of the girder; ,

Concrete is placed on the steel plate, and the bottom plate with corresponding insertion part connected by inserting part and male and female coupling method is manufactured at the factory, respectively, so that the girder assembly and the bottom plate can be precisely and simply adjusted to the appropriate position at the construction site of the bridge. It is easy to assemble, and its construction is excellent, and it is possible to maintain uniformity of quality,

Furthermore, the cross-section stiffness can be increased by the bottom plate combined with the steel plate and concrete, and at the same time, the protrusions formed on both sides of the bottom plate are sandwiched between the supporting member and the supporting member, so that the cross-section stiffness on both sides of the bottom plate mounted on the girder assembly can be increased. It is possible to provide an assembled bridge excellent in reinforcement and a construction method thereof.

As is well known, a girder bridge is a bridge constructed in the horizontal direction and installs a girder (or a mold) between the piers (posts) to allow traffic of vehicles, etc. It is divided into type (I) girders and box girders.

After the girder bridge is installed between the girder, the girder is lifted to lift the completed bottom plate and placed on the girder or by pouring concrete to cure the bottom plate. However, such a construction method not only takes a lot of construction period, but also has many problems, such as a lot of on-site work, difficult construction and difficult construction quality depending on the work skill of the operator.

In order to solve this problem, technologies related to an integrated bottom plate girder assembly have been proposed. For example, the inventor of the present patent application filed a patent application of the 'reinforced plate and girder integrated temporary bridge' as of Feb. 05, 2007 and was registered as patent 739823.

However, since the girder assembly in which the perforated plate or the top plate is made integrally may cause a lot of difficulties in transportation from the factory to the construction site, it is advantageous in terms of transportation while taking advantage of the factory manufacturing, and furthermore, it is easy to assemble in the field. Bridges and construction methods are required.

The present invention has been made to solve the above problems,

The present invention relates to an assembled bridge and a construction method for ensuring the assemblability of the girder and the bottom plate installed on the bridge pier, and a girder assembly having an insertion portion formed in the support member of the coupling assembly connected to the upper flange of the girder; ,

Concrete is placed on the steel plate, and the bottom plate with corresponding inserts connected by insert and male and female coupling method is manufactured at the factory, respectively, in the construction site to assemble the girder assembly and the bottom plate accurately and simply at the assembly site. It is an object of the present invention to provide an assembling bridge and a construction method thereof, which are excellent in workability and can maintain uniformity in quality.

Furthermore, the cross-section stiffness can be increased by the bottom plate combined with the steel plate and concrete, and at the same time, the protrusions formed on both sides of the bottom plate are sandwiched between the supporting member and the supporting member, so that the cross-section stiffness on both sides of the bottom plate mounted on the girder assembly can be increased. Another object of the present invention is to provide an assembled bridge having excellent reinforcement property and a construction method thereof.

Assembled bridge and its construction method for achieving the object of the present invention as described above,

Girders arranged side by side over the bridge piers; A coupling assembly arranged side by side on both sides of the upper flange of the girder and including a supporting member having a plurality of inserts formed therein, and a supporting member arranged between the supporting members, the coupling assembly being connected to the upper girder flange; And a bottom plate formed by pouring concrete into a steel plate and having a corresponding insertion portion connected to the insertion portion of the supporting member by a male and female coupling method on a bottom surface thereof.

And the insertion portion of the support member according to the invention is an uneven portion, the corresponding insertion portion of the bottom plate is characterized in that the male and female coupling is formed by the corresponding uneven portion.

Furthermore, both sides of the bottom plate according to the present invention are provided with a protrusion fitted between the support member and the support member of the coupling assembly can increase the cross-sectional rigidity,

Preferably, a fastening hole is formed on the same line as the protrusion of the bottom plate and the support member and the support member of the coupling assembly, and a fastening bolt is integrally connected to the bottom plate and the coupling assembly through the fastening hole. It features.

In addition, the height of the support member in the coupling assembly according to the invention is preferably formed lower than the height of the support member.

In addition, the outer connecting member of the coupling assembly arranged at both ends in the width direction of the bridge according to the invention is characterized in that the reinforcing member,

And between the support member and the reinforcing member of the coupling assembly is preferably filled with concrete.

Meanwhile, the assembled bridge construction method according to the present invention

A first step of forming a coupling assembly in which a support member having an insertion portion having an uneven shape along the longitudinal direction of the bridge and a support member formed between the support members are connected; A second step of forming a bottom plate by reinforcing the reinforcing bars and placing concrete on the steel sheet having a corresponding insertion portion having a corresponding uneven shape formed along the longitudinal direction of the bridge and coupled to the insertion portion; A third step of forming a girder assembly which connects two or more 'I' type girders with transverse reinforcement members to form a girder assembly; Connecting the coupling assembly to an upper flange of each girder of the girder assembly; A fifth step of lifting the bottom plate and coupling the insertion portion of the support member and the corresponding insertion portion of the bottom plate by a male and female coupling method; And a sixth step of lifting and installing the bottom plate and the girder assembly on which the fifth step is completed, in the piers.

By the assembled bridge and the construction method according to the invention

In the factory, a girder assembly having an insert portion formed on the supporting member of the coupling assembly connected to the upper flange of the girder, and a bottom plate having a concrete insert placed on the steel plate and a corresponding insert portion connected to the insert portion and the male and female coupling method at the bottom are respectively manufactured in the factory. In the construction site of the bridge, it can be assembled precisely and simply in the corresponding position with respect to the width direction and the longitudinal direction of the girder assembly and the bottom plate, so that the workability is excellent and the quality uniformity can be maintained.

Furthermore, the cross-section stiffness can be increased by the bottom plate combined with the steel plate and concrete, and at the same time, the protrusions formed on both sides of the bottom plate are sandwiched between the supporting member and the supporting member, so that the cross-section stiffness on both sides of the bottom plate mounted on the girder assembly can be increased. It can be reinforced.

Hereinafter, with reference to the accompanying drawings, the assembled bridge and the construction method according to the present invention in more detail,

1 is a perspective view showing a girder assembly of a prefabricated bridge according to the present invention;

2 is a perspective view showing another application example of the girder assembly of the assembled bridge according to the present invention;

3 and 4 is a perspective view showing the coupling of the bottom plate and the girder assembly of the prefabricated bridge according to the invention,

Figure 5 and Figure 6 is a perspective view and a coupling cross-sectional view showing the coupling of the bottom plate and the coupling assembly according to the present invention,

7 is a perspective view showing a reinforcing member of the coupling assembly according to the present invention;

8 is a perspective view showing that the concrete is filled in the reinforcing member of the coupling assembly according to the present invention;

9 is a flow chart showing a prefabricated bridge construction method according to the present invention.

Hereinafter, in the present specification, the bottom plate 20 is formed by pouring concrete 21 on the steel plate 22, and the bottom plate 20 is installed along the longitudinal direction of the bridge, and the bottom plate 20 is Although it may be integrally formed over the entire length of the bridge, this is not preferable in consideration of the assembly workability in the construction site, and thus the bottom plate 20 is preferably formed to have a constant length, and the bottom plate 20 ) Is a comprehensive concept that includes a perforated plate.

1 to 4, in the assembled bridge and its construction method according to the present invention, the assembled bridge is

Girders 11 arranged side by side over the bridge piers; Support members (34) arranged side by side on both sides of the upper flange (11b) of the girder (11), a plurality of inserts (36) formed, and arranged between the support members (32) It comprises a, the assembly assembly 30 is connected to the girder 11, the upper flange (11b); And a bottom plate 20 in which concrete 21 is poured on the steel plate 22, and a corresponding insertion part 26 connected to the insertion part 36 of the supporting member 32 by a male and female coupling method is formed on the bottom surface thereof. It is made, including.

In the prefabricated bridge according to the invention as shown in Figure 1, the girder 11 is

It is arranged side by side on the bridge pier, and the girder 11 may be installed in the I-girder 11 according to the width of the bridge, that is, the width of the road surface, in this case the girder 11 and the girder 11 The girder assembly 10 is configured by connecting the girder 11 and the girder 11 by a horizontal reinforcement member 13 to more stably support the girder 11.

The girder 11 has an upper flange 11b and a lower flange 11c arranged at an upper portion thereof, and the upper flange 11b and the lower flange 11c are connected to each other by a web 11a of an I-shaped steel. It is

The girder 11, the upper portion of the assembly 10 is composed of a steel plate 22 and the bottom plate 20, the composite of the concrete 21 is integrally fastened.

In the assembled bridge according to the present invention as shown in Figures 1 to 4, the coupling assembly 30 is

Support members (32) arranged side by side on both sides of the upper flange (11b) of the girder (11), the plurality of inserts (36) formed, and the support member (34) arranged between the support members (32) It comprises a, it is connected to the upper flange (11b) of the girder (11).

That is, the coupling assembly 30 according to the present invention may be formed in various configurations, for example, the coupling assembly 30 is formed in an independent configuration by means of fastening means on the upper flange 11b of the girder 11. Can be combined,

Alternatively, the support member 32 and the support member 34 of the coupling assembly 30 may be directly connected to the upper flange 11b of the girder 11 by welding or the like.

Therefore, in various modifications for implementing the coupling assembly 30 may be implemented in the most appropriate manner in consideration of manufacturing convenience and assembly workability in the construction site,

Hereinafter, the coupling assembly 30 will be described on the premise that the coupling assembly 30 is provided independently of the girder 11, but the coupling assembly 30 does not necessarily mean that the coupling assembly 30 must be specified as an independent configuration.

A base 31 is formed below the coupling assembly 30, and the support member 32 and the support member 34 are integrally formed on the base 31, or by a fastening means, that is, welding or the like. Can be fixed.

And the supporting member 32 is arranged on both sides of the upper flange (11b) of the girder 11, that is, the supporting member 32 is connected to both sides of the width direction of the base 31, the base 31 Is formed along the length of

An insertion part 36 is formed on an upper portion of the support member 32. The insertion portion 36 of the support member 32 is formed with a corresponding insertion portion 26 of the bottom plate 20 which will be described below. Since it is connected by the male and female coupling method, it will be described at the same time with respect to the corresponding insert 26.

In addition, the support member 34 is arranged between the support member 32, that is, is preferably connected to the center of the base 31 along the longitudinal direction of the base 31,

As shown in FIG. 2, only the support member 32 is connected to both sides of the base 31 in the width direction of the base 31 without connecting the support member 34 in consideration of the manufacture of the coupling assembly 30 and pore ease. It is also possible to configure.

In the prefabricated bridge according to the invention as shown in Figures 3 and 4, the bottom plate 20 is

Reinforcing steel on the steel plate 22 is formed of a steel composite base plate 20 is a composite of the concrete 21 and the steel plate 22, the corresponding insertion portion 26 is connected to the insertion portion 36 of the support member 32 By placing the concrete 21 is poured, cured and formed.

Although not shown in the accompanying drawings, it is preferable that the shear connection member is formed between the steel plate 22 and the concrete 21 to increase the bonding strength.

Hereinafter will be described with respect to the essential configuration of the present invention to make the assembly of the assembled bridge according to the present invention more simple and easy,

As shown in FIGS. 1 to 4, the insertion portion 36 formed on the support member 32 of the coupling assembly 30 and the corresponding insertion portion 26 of the bottom plate 20 are male and female. Connected,

The insertion portion 36 of the support member 32 is an uneven portion 36a, and the corresponding insertion portion 26 of the bottom plate 20 is formed of a corresponding uneven portion 26a.

That is, the insertion portion 36 of the support member 32 is formed with a plurality of concave-convex portion (36a) along the longitudinal direction of the coupling assembly 30,

The corresponding insertion part 26 of the bottom plate 20 is formed with a corresponding uneven part 26a corresponding to the uneven part 36a of the insertion part 36 in the width direction of the bottom plate 20, that is, Corresponding concave-convex portions 26a of the corresponding insertion portions 26 are formed on the steel plate 22 constituting the bottom plate 20.

Therefore, when the bottom plate 20 is lifted and mounted on the girder assembly 10 to the girder assembly 10 formed by connecting the girder 11 and the girder 11, the width direction and the longitudinal direction It is possible to assemble the position of the assembly precisely to the exact position without any effort, ensuring the ease of assembly of the bridge.

Although not shown in the accompanying drawings, the insertion part 36 and the uneven parts 36a and 26a of the corresponding insertion part 26 may be modified in various shapes, for example, the insertion part 36. ) And the corresponding insertion unit 26 may be formed in a wave shape and connected to each other by a male and female coupling method.

In addition, the coupling assembly 30 is connected to both sides of the base 31 in the width direction, and the support member 34 is connected between the center of the base 31, that is, the support member 32, to provide two spaces. Form,

The bottom plate 20 connected to the girder assembly 10 is installed between the girder 11 and the girder 11, and in this case, the bottom plate 20 is formed in the width direction of the bottom plate 20 so as to face downwards. The protrusion 24 is formed.

That is, the protrusion part 24 of the bottom plate 20 is fitted in a space occupying one side of two spaces formed by the support member 32 and the support member 34, for example, one girder 11. When the bottom plate 20 is connected in the girder 11 assembly 10 formed by the other girder 11), the protrusion 24 of the bottom plate 20 is supported by the support member 32. And a space between two spaces formed by the support member 34 to occupy the inside of the girder 11 assembly 10.

Therefore, it is possible to prevent the movement of the bottom plate 20 in the width direction of the bridge that may occur due to the use load acting on the bridge by the protrusions 24 of the bottom plate 20, the bottom plate It is possible to increase the cross-sectional rigidity at both ends of (20).

5 and 6, when the bottom plate 20 and the coupling assembly 30 are integrally connected, the protrusion 24 of the bottom plate 20 and the supporting member 30 of the coupling assembly 30 are shown. 32) and each side of the support member 34 abut,

At this time, the protruding portion 24 of the bottom plate 20 and the side of the support member 32 and the support member 34 of the coupling assembly 30 in the same line, that is, the convex portion and the support member of the support member 32 Fastening holes 24a, 32a, and 34a are formed on the same line formed by the side surfaces of the 34, and the bottom plate 20 and the coupling assembly adjacent through the fastening holes 24a, 32a and 34a are formed. The coupling bolt 12 is fixed by the fastening bolt 12 so as to be integrally connected.

That is, the bottom plate 20 and the coupling assembly 30 by the fastening holes 24a, 32a, 34a and the fastening bolts 12 formed in the bottom plate 20 and the coupling assembly 30. It allows the girder assembly 10 to be integrally behaved.

And the height of the support member 32 of the coupling assembly 30 is formed lower than the height of the support member 34,

The side surface of the bottom plate 20 is in contact with both sides of the support member 34 arranged between the support member 32, the bottom plate 20 covers the support member 32 and Since the protrusion 24 of the bottom plate 20 is sandwiched between the support member 32 and the support member 34, the height of the support member 32 at the height of the protrusion 24 of the bottom plate 20. The height of the support member 32 is formed to be lower than the height of the support member 34 by the height minus the height.

However, when the support member 32 and the support member 34 are formed to have the same height, although not shown in the accompanying drawings, a separate reinforcing member (not shown) is inserted into the adjacent bottom plate 20 and the bottom plate ( It is possible to reinforce the space formed in 20).

7 and 8, the outer support member 32 of the coupling assembly 30 arranged at both ends in the width direction of the bridge, that is, the bottom plate connected to the outside in both directions in the width direction of the bridge ( 20), the space located on the outside of the bridge of the space between the support member 32 and the support member 34 is empty, so that it is necessary to ensure the cross-sectional rigidity of both outer portions of the bridge do.

Accordingly, the outer support member 32 of the coupling assembly 30 arranged at both ends in the width direction of the bridge is formed in the same plate shape as the reinforcing member 33, that is, the support member 34, so that the coupling assembly 30 is provided. Are formed on both sides of the

At this time, by filling the concrete 21 in the space formed between the support member 34 and the reinforcing member 33 of the coupling assembly 30 to secure the cross section, it is possible to ensure the cross-sectional rigidity of both sides of the bridge outside This allows a balance between increasing the overall cross-sectional stiffness of the bridge.

Next, as shown in Figure 9 assembled bridge construction method according to the invention

A coupling assembly 30 is formed in which a support member 32 having an insertion portion 36 having an uneven shape 36a and a support member 34 formed between the support members 32 are connected along the longitudinal direction of the bridge. First step (S1) to do;

Reinforcing bars are placed on the steel plate 22 formed along the longitudinal direction of the bridge and formed with the corresponding insertion portion 26 of the corresponding uneven shape 26a coupled to the insertion portion 36. A second step S2 of forming the plate 20;

A third step (S3) of forming a girder assembly (10) to form the girder (11) assembly (10) by connecting two or more 'I' type girders (11) to the lateral reinforcement members (13);

A fourth step (S4) of connecting the coupling assembly (30) to the upper flange (11b) of each girder (11) of the girder assembly (10);

A fifth step (S5) of lifting the bottom plate 20 to couple the insertion part 36 of the support member 32 and the corresponding insertion part 26 of the bottom plate 20 by a male and female coupling method; And

And a sixth step S6 of lifting the bottom plate 20 and the girder assembly 10 to which the fifth step S5 is completed and installing the girder assembly 10 on the piers.

In the assembled bridge construction method according to the present invention,

First, the first step (S1) is coupled to the support member 34 formed between the support member 32 and the support member 32 having an uneven insertion portion 36 in the longitudinal direction of the bridge is connected The assembly 30 is formed, the coupling assembly 30 may be an independent one formed by the base 31 is connected to the support member 32 and the support member 34, or of the girder 11 The support member 32 and the support member 34 may be integrally connected to the upper flange 11b,

Hereinafter, the coupling assembly 30 having an independent shape will be described in detail.

Next, the second step (S2) is formed along the longitudinal direction of the bridge and the reinforcing bar to the steel plate 22 formed with the corresponding insertion portion 26 of the corresponding concave-convex shape coupled to the insertion portion 36 and the concrete ( By pouring 21) curing to form the bottom plate 20,

In this case, in order to firmly bond the steel plate 22 and the concrete 21, it is preferable that a plurality of shear connection members are installed on the upper portion of the steel plate 22.

And the third step (S3) is to form a girder assembly 10 by fixing the horizontal reinforcing member 13 connecting the sides of two or more 'I' type girder 11, respectively, by a coupling method such as welding. .

In addition, the fourth step S4 connects the coupling assembly 30 to the upper flange 11b of each girder 11 of the girder assembly 10, in which case the base of the coupling assembly 30 31 is firmly fastened to the upper flange 11b of each girder 11 by welding or shear connecting members.

In the fifth step S5, the bottom plate 20 is lifted, and the insertion part 36 of the support member 32 and the corresponding insertion part 26 of the bottom plate 20 are formed by a male and female coupling method. In this case, the protrusions 24 are formed on both sides of the bottom plate 20 in the downward direction, so that the protrusions 24 and the support member 32 of the coupling assembly 30 are on the same line. By fastening and fastening the fastening holes 24a, 32a, and 34a formed through the fastening bolts 12, the fastening can be secured.

Finally, the sixth upper step S6 lifts the bottom plate 20 and the girder assembly 10 on which the fifth step S5 is completed, and installs them on the pier to complete the assembled bridge.

In the above description with reference to the accompanying drawings, the present invention, the assembled bridge and the construction method of the present invention has been described with reference to a specific shape and direction, the present invention can be variously modified and changed by those skilled in the art, such variations and modifications are It should be construed as being included in the scope of the invention.

1 is a perspective view showing a girder assembly of a prefabricated bridge according to the present invention;

2 is a perspective view showing another application example of the girder assembly of the assembled bridge according to the present invention;

3 and 4 is a perspective view showing the coupling of the bottom plate and the girder assembly of the prefabricated bridge according to the invention,

Figure 5 and Figure 6 is a perspective view and a coupling cross-sectional view showing the coupling of the bottom plate and the coupling assembly according to the present invention,

7 is a perspective view showing a reinforcing member of the coupling assembly according to the present invention;

8 is a perspective view showing that the concrete is filled in the reinforcing member of the coupling assembly according to the present invention;

9 is a flow chart showing a prefabricated bridge construction method according to the present invention.

<Explanation of Signs of Major Parts of Drawings>

10 girder assembly 11 girder

11a: Web 11b: Upper Flange

11c: Lower Flange 12: Tightening Bolt

13: horizontal reinforcement member

20: bottom plate 21: concrete

22: steel sheet 24: protrusion

24a: fastener 26: counterpart

26a: corresponding uneven portion

30: assembly assembly 31: base

32: support member

32a: fastening hole 33: reinforcing member

34 support member 34a fastening hole

36: insertion portion 36a: uneven portion

Claims (8)

Girders arranged side by side over the bridge piers; A support member arranged side by side on both sides of the upper flange of the girder and having a plurality of inserts therein; and It comprises a support member arranged between the support member, A coupling assembly connected to the girder upper flange; And Concrete is poured into a steel plate, the bottom portion formed on the bottom surface of the corresponding insertion portion connected to the insertion portion and the male and female coupling method of the supporting member; prefabricated bridge comprising a. The method of claim 1, The insertion portion of the support member is an uneven portion, the corresponding insertion portion of the bottom plate is assembled bridge, characterized in that formed by the corresponding uneven portion is male and female coupling. The method of claim 1, Both sides of the bottom plate is a protruding portion is formed between the support member and the support member of the coupling assembly is assembled bridge, characterized in that to increase the cross-sectional rigidity. The method of claim 3, wherein A fastening hole is formed on the same line as the protrusion of the bottom plate and the supporting member and the support member of the coupling assembly, and a fastening bolt is integrally connected to the bottom plate and the coupling assembly through the fastening hole. Prefabricated bridges. The method of any one of claims 1 to 4, wherein in the assembling assembly The height of the support member is assembled bridge, characterized in that formed lower than the height of the support member. The method according to any one of claims 1 to 4, And an outer support member of the coupling assembly arranged at both ends in the width direction of the bridge is a reinforcing member. The method of claim 6, Assembly bridge, characterized in that filled between the support member and the reinforcing member of the coupling assembly by concrete. A first step of forming a coupling assembly to which a supporting member having an uneven insertion portion and a supporting member formed between the supporting members is connected along a longitudinal direction of the bridge; A second step of forming a bottom plate by reinforcing reinforcing bars and placing concrete on a steel plate having a corresponding insertion portion having a corresponding uneven shape formed along the longitudinal direction of the bridge and coupled to the insertion portion; A third step of forming a girder assembly which connects two or more 'I' type girders with transverse reinforcement members to form a girder assembly; Connecting the coupling assembly to an upper flange of each girder of the girder assembly; A fifth step of lifting the bottom plate and coupling the insertion portion of the support member and the corresponding insertion portion of the bottom plate by a male and female coupling method; And And a sixth step of lifting and installing the bottom plate and the girder assembly on which the fifth step is completed, in the pier.

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