KR100535157B1 - Structures and Methods for Connection between Precast Decks and Prestressed Concrete Girders - Google Patents

Structures and Methods for Connection between Precast Decks and Prestressed Concrete Girders Download PDF

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Publication number
KR100535157B1
KR100535157B1 KR20030036823A KR20030036823A KR100535157B1 KR 100535157 B1 KR100535157 B1 KR 100535157B1 KR 20030036823 A KR20030036823 A KR 20030036823A KR 20030036823 A KR20030036823 A KR 20030036823A KR 100535157 B1 KR100535157 B1 KR 100535157B1
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South Korea
Prior art keywords
precast
girder
plate
prestressed concrete
pocket
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KR20030036823A
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Korean (ko)
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KR20040105446A (en
Inventor
김성운
김영진
김인규
박세진
김석기
정철헌
심창수
이한주
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(주)대우건설
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Priority to KR20030036823A priority Critical patent/KR100535157B1/en
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Publication of KR100535157B1 publication Critical patent/KR100535157B1/en

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Abstract

The present invention utilizes an improved prefabricated shear connector of the stud type, in contrast to the prior art, which relies on a stub made of reinforcing bars in connecting the precast deck to the prestressed concrete girder after being manufactured at the factory. By connecting the precast deck and the prestressed concrete girder firmly and structurally integrated, it relates to a new type of connection structure and its construction method that can easily perform the connection construction work.
In the present invention, as a connection structure between the prestressed concrete girder 1 and the precast bottom plate, the front pocket 11 is formed through the precast bottom plate 10 forming the bottom plate; In the upper part of the prestressed concrete girder (1), the fastener (3) is pre-embedded and installed in a position where the shear pocket (11) will be placed; In the state where the precast bottom plate 10 is mounted on the upper part of the girder 1, the prefabricated shear connector 2 is inserted into the fastener 3 through the upper part of the shear pocket 11 and fastened to the prestress. Installed in the concrete girder 1; In the state where the prefabricated shear connector 2 is installed, the front pocket 11 is filled with a filler 12 to fill the space between the front pocket 11 and the bottom surface of the girder 1 and the precast bottom plate 10. As a result, there is provided a connection structure of the prestressed concrete girder and the precast deck and a construction method thereof, characterized in that the girder 1 and the precast deck 10 are integrally connected and synthesized.

Description

Structures and Methods for Connection between Precast Decks and Prestressed Concrete Girders

The present invention relates to a connection structure between the precast floor plate and the prestressed concrete girder and a method of constructing the same. Specifically, in connecting the precast floorboard to the prestressed concrete girder after being manufactured at the factory, Unlike the prior art, which relies on a stub made of reinforcing bar, the stud-type improved prefabricated shear connector can be used to firmly connect the precast deck and the prestressed concrete girder and to structurally integrate the construction work. The present invention relates to a connection structure and a method of constructing the connection of a new method that can be easily performed.

Composite bridges with prestressed concrete girders are more commonly constructed in the domestic bridge construction sector than other types of bridges, and the demand is expected to continue to increase in view of Korea, which has the majority bridges between small and medium sized bridges.

In the conventional bridge system using prestressed concrete girder, the prestressed concrete girder is manufactured at a site near a factory or bridge construction site, transported to the site, mounted on the bridge between bridges or between bridges and shifts, Concrete bridge deck was constructed. However, when the bridge deck is constructed with cast-in-place concrete, it requires a lot of construction costs because it requires work by manpower, such as installation of copper bars and formwork, and it takes a long period of construction time according to the curing period of concrete. have.

In order to solve this problem, in recent years in the bridge system using prestressed concrete girder, instead of the cast-in-place concrete slabs, the floorboards are manufactured in advance in the factory or near the site, and then transferred to the site to the prestresses. The idea of constructing floorboards by combining with concrete girders has been proposed. As described above, in forming a precast prefabricated slab prefabricated to the prestressed concrete girder to form a bottomboard, it is very important to connect the girder and the bottomboard integrally and synthesize them.

As mentioned above, the idea of synthesizing prestressed concrete girders and precast decks has not been put to practical use, because there is no proposed method for synthesizing by combining the decks and girders integrally.

The following connection structure has been discussed by applying the method of connecting the conventional cast-in-place concrete deck plate to the girder. 5 is a schematic view showing a connection structure of the prestressed concrete girder 20 and the precast concrete deck 30, which has been proposed so far, in the prior art when manufacturing the prestressed concrete girder 20 ) Is exposed to the upper surface, and when the precast concrete floor plate 30 is mounted on the girder 20 by forming a shear pocket 31 on the precast concrete floor plate 30, the upper surface of the girder 20 After the stub 21 is installed in the shear pocket 31 is placed in the front pocket 31 to fill the filler to harden.

By the way, in the above connection structure, since the stub 21 which functions as a shear rebar is protruded on the upper surface of the girder 20 beforehand, the stub 21 is attached to the bottom plate 30 when the bottom plate 30 is mounted. 30) is very likely to be damaged by collision.

In addition, the prestressed concrete girder 20 should be manufactured in a state in which the stirrup 21 is placed in advance in accordance with the position of the shear pocket 31. Since the reinforcement work of the stub 21 takes a lot of labor and cost. The disadvantage is that construction economy is low.

In particular, when the position of the stub 21 is changed from the designed in the reinforcement process of the stub (21) is not matched with the position of the front pocket 31 of the bottom plate 30 it is impossible to install the bottom plate 30 . In this case, the bottom plate 30 may be installed by cutting the stub 21, but since the stirrup 21 cannot be installed again after cutting and removing the stub 21, the girder 20 intended at the time of design and Serious problems arise that the solid connection of the bottom plate 30 cannot be achieved.

As described above, the connection structure between the prestressed concrete girder and the precast bottom plate by the stirrup which has been proposed so far cannot be combined and firmly combined with the girder and the bottom plate. Therefore, in order to realize the idea of installing a precast bottom plate by installing a precast bottom plate on a prestressed concrete girder, a new connection structure and a method of constructing it that can be combined and solidly combined with the girder are needed urgently. It's happening.

The present invention was developed in order to meet the above demands, the construction of the new prestressed concrete girder and the precast bottom plate that can be synthesized by connecting the prestressed concrete girder and the precast bottom plate with a solid and simple construction. An object of the present invention is to provide a structure and a connection construction method thereof.

In the present invention, in order to achieve the above object, as a connection structure of the prestressed concrete girder and the precast bottom plate, the precast bottom plate constituting the bottom plate is formed through the shear pocket; In the upper portion of the prestressed concrete girder, the fixture is buried in advance at the position where the shear pocket is to be placed; A prefabricated shear connector is installed in the prestressed concrete girder by being inserted into the fastener through the top of the shear pocket while the precast bottom plate is mounted on the prestressed concrete of the girder; In the state that the prefabricated shear connector is installed, the front pocket is filled with a filler to fill the space between the front pocket and the bottom of the girder and the precast bottom plate, the girder and the precast bottom plate is integrally connected and synthesized The connection between the prestressed concrete girder and the precast deck is provided.

In the present invention, as a specific embodiment of the above connection structure, the fastener is installed perpendicular to both ends of the fastener installation member, the concrete is poured in the state that the fastener installation member over the longitudinal reinforcement of the prestressed concrete girder The connection structure of the prestressed concrete girder and the precast bottom plate is provided so that the insertion hole of the fixture is exposed to the upper surface of the prestressed concrete girder.

In addition, in the present invention, as a more specific embodiment of the above connection structure, the fastener installation member is formed with a bent portion in the center so that the transverse position of the fastener does not change and the bent portion is inserted between the longitudinal reinforcement of the prestressed concrete girder A connection structure between the prestressed concrete girder and the precast deck is provided.

In another embodiment of the present invention, the fastener is composed of a tubular member having an insertion hole, the prefabricated shear connector is prestressed concrete girder and precast, characterized in that the screw is inserted into the fastener A connection structure of the bottom plate is provided.

In the present invention, as a connection construction method for connecting the prestressed concrete girder and the precast bottom plate, the precast bottom plate constituting the bottom plate to produce a precast bottom plate to form a shear pocket is empty; Manufacturing the prestressed concrete girder so that the fixture is embedded in the upper portion of the prestressed concrete girder at the position where the shear pocket is to be placed; Mounting the precast deck over the prestressed concrete girder such that the fixture is in the position of the shear pocket; Inserting a prefabricated shear connector through an upper portion of the shear pocket while the precast bottom plate is mounted on an upper portion of the prestressed concrete girder to fasten the fastener; Filling the filler into the shear pocket, the prefabricated shear connector is installed by filling the space between the shear pocket and the girder and the lower surface of the precast bottom plate, by combining the girder and the precast bottom plate integrally. A method of connecting the prestressed concrete girder to the precast deck is provided.

Next, the configuration of the present invention will be described by referring to specific embodiments of the present invention with reference to the accompanying drawings.

1 is a schematic perspective view showing a state before assembling the prefabricated shear connector 2 in a state where a precast bottom plate 10 having a predetermined width is installed in a prestressed concrete girder 1 according to the present invention. .

In the present invention, the precast floor plate 10 is not only precast concrete floorboard made of concrete, but also prefabricated in a factory at a predetermined width, such as composite floorboard made of fiber and resin, and are connected to each other in the field It is meant to include all kinds of precast decks that form the entire deck. However, in the description of the following embodiment, as an example of the precast deck 10 for convenience, the structure of the present invention will be described by illustrating the precast concrete deck. However, as noted above, the present invention is not limited to the above precast concrete deck.

As shown in FIG. 1, a precast bottom plate 10 is mounted on an upper portion of the prestressed concrete girder 1, and the precast bottom plate 10 is positioned at a position where the prestressed concrete girder 1 is placed. A front end pocket 11 is formed in which the inside is emptied at predetermined intervals in the longitudinal direction. In the present invention, the prefabricated shear connector (2) is inserted through the upper portion of the shear pocket 11 in a state where the precast bottom plate 10 is mounted on the upper portion of the prestressed concrete girder (1) to the It is assembled and installed on the upper surface. For this purpose, the following configuration should be installed during the manufacture of the girder (1).

Figure 2 shows the installation configuration of the fastener (3) is fastened to the prefabricated shear connector (2) so that the prefabricated shear connector (2) can be installed in the prestressed concrete girder (1), specifically, the prefabricated shear connector (2) A schematic perspective view of a reinforcing bar installation structure reinforcing the prestressed concrete girder 1 at the location where the connecting material 2 is installed is shown.

In FIG. 2, the member number 4 is a longitudinal reinforcing bar 4 which is reinforced in the longitudinal direction of the bridge at the top of the prestressed concrete girder 1, and the member number 5 is a transverse direction that is reinforced on the upper part of the prestressed concrete girder 1. Reinforcing bars (5). In the present invention, in the construction of the prestressed concrete girder 1, the prefabricated shear connector 2 is inserted into the fixture 3 made of a fastening tubular member integrally. Specifically, as an example of the fastener 3, there may be exemplified a steel pipe, a sleeve, or the like having a threaded portion formed therein, which will be described later with reference to the threaded portion.

When the fastener 3 is to cast concrete to produce the prestressed concrete girder 1, the fastener 3 is completely embedded in the concrete leaving only the insertion hole 6 in the upper portion of the prestressed concrete girder 1 Is installed on. At this time, a part of the upper part of the fixture 3 may be exposed on the upper surface of the prestressed concrete girder 1.

The fastener (3) is provided to correspond to the number of prefabricated shear connector (2) in accordance with the connection strength between the prestressed concrete girder (1) and the bottom plate required in the design, as described above, the precast bottom plate ( 10) should be provided at a position corresponding to the position of the front end pocket (11). The fastener 3 should be installed at the correct position in the longitudinal direction of the girder in accordance with the position of the front pocket 11, as well as maintaining a constant distance between the fasteners 3 in the transverse direction of the girder. In particular, when installing a plurality of fasteners (3), if any one of the plurality of fasteners (3) is located where the front pocket 11 is not formed, the fasteners (2) can be fastened to the fastener (3) It is very important that the entire fastener 3 be installed at the correct position corresponding to the position of the front end pocket 11 even in the transverse direction, since it causes a problem that the connection strength is lowered.

In the installation of the fixture 3 as described above, in the present invention in order to precisely fit the installation position and at the same time to easily perform the installation work, and to maintain a constant spacing of the fixture 3 in the transverse direction as follows: To present. The method described later in connection with the installation of the fastener (3) takes advantage of the constant spacing of the longitudinal reinforcing bars (4) to be reinforced to the prestressed concrete girder (1).

As shown in FIG. 2, for example, in the case of installing two fasteners 3, the fasteners 3 are respectively provided on both sides of the fastener mounting member 7 of a predetermined length so that both fasteners 3 have a constant interval. The fixture installation member 7 is to be placed over the longitudinal reinforcing bar (4) in the state maintained. The fastener mounting member 7 may be formed of a plate, forming a through hole into which the fastener 3 is inserted at both sides of the plate spanning the longitudinal reinforcing bars 4 on both sides, and a fastener (in the through hole). 3) After inserting and installing the plate is placed over the longitudinal reinforcing bar (4). According to such a configuration, it is possible to easily position the fastener 3 while maintaining a constant interval between the fasteners (3).

In particular, as shown in FIG. 2, when the center of the fixture installation member 7 is bent downward to form a bent portion, and the bent portion is positioned to be inserted between the longitudinal reinforcing bars 4, the fixture installation member 7 and There is an effect that the fastener 3 is prevented from moving laterally. When no bends are formed in the fixture mounting member 7, longitudinal reinforcement of the fixture mounting member 7 is performed by spot welding, adhesive coating, etc. to prevent the fixture mounting member 7 from moving laterally. You can also attach it to (4).

However, in the present invention, the installation method of the fastener 3 is not limited thereto, and there is also a method of directly installing the fastener 3 on the side of the longitudinal reinforcing bar 4 by a method such as spot welding. In addition, the fixture 3 may be installed using various methods.

After installing the fastener 3 in a predetermined position as described above, the concrete is poured, and the body of the fastener 3 is completely embedded in the interior and the insertion hole 6 is exposed to the upper surface of the prestressed concrete girder 1 To make.

On the other hand, it is preferable to form a concave shear key 9 on the upper surface of the prestressed concrete girder 1 at the position where the fastener 3 is installed. In forming the shear key 9, the shape of the shear key 9 can be freely selected, but it is particularly preferable to have a square pyramid shape in the depth direction. This is because the square pyramid shaped shear key 9 is superior in crack resistance at the corners as compared with the rectangular shear key 9. By forming the shear key 9 in this manner, when the filler 12 is filled and cured through the shear pocket 11 as described below, the shear key 9 is used to separate the space between the precast bottom plate 10 and the girder 1. The shear connection becomes stronger.

After manufacturing the prestressed concrete girder 1 in a state in which the fastener 3 is installed in the same manner as above, and mounted between the piers or between the piers and the shifts, the precast bottom plate 10 is mounted thereon. At this time, the precast bottom plate 10 must be mounted so that the position of the front end pocket 11 formed through the precast bottom plate 10 and the installation position of the fixture 3 of the prestressed concrete girder 1 coincide with each other. do.

FIG. 3 is a cross-sectional view taken along line AA for one prestressed concrete prestressed concrete girder 1 in FIG. 1, as shown in the figure, the position of the fastener 3 and the front pocket 11 of FIG. After the precast bottom plate 10 is mounted on the prestressed concrete girder 1 so that the positions coincide, the prefabricated shear connector 2 is inserted through the top of the shear pocket 11 to be firmly attached to the fixture 3. Will be tightened.

As an example of a configuration in which the prefabricated shear connector 2 is firmly fastened to the fastener 3, a screw portion is formed inside the insertion hole of the fastener 3, and correspondingly to the outside of the prefabricated shear connector 2. It is preferable to use a method of screwing the prefabricated shear connector 2 to the fastener 3 by forming a screw portion. However, in the present invention, the fastening method of the prefabricated shear connector 2 and the fastener 3 is not limited to the screw coupling as described above, and may be used in any way that can be assembled firmly and easily.

4 is a state in which the precast bottom plate 10 is installed as described above, and after the prefabricated shear connector 2 is installed, the filler is filled in the front pocket 11 and the neighboring precast bottom plate 10 is connected. Is a schematic perspective view.

As shown in FIG. 4, after the precast bottom plate 10 is installed and the prefabricated shear connector 2 is installed, the filler 12 is cured by pouring the filler 12 into the shear pocket 11 to assemble the prefabricated shear connector 2. ) Is integrally connected with the precast bottom plate 10. When the precast deck 10 is made of precast concrete, it is preferable to use non-contraction mortar as the filler 12.

Subsequently, the neighboring precast deck 10 is sequentially arranged to connect with the already installed precast deck 10 and at the same time the precast deck 10 and the prestressed concrete girder 1 in this manner. Synthesize In the embodiment illustrated in FIG. 4, in connecting the bottom plate 10 and the bottom plate 10, a connection pocket 13 is formed between the bottom plates 10 facing each other, and the bottom plates 10 face each other. The filling pocket 12 is filled in the connection pocket 13.

On the other hand, when the precast bottom plate 10 is placed on the girder 1, the top edge of the girder 1 is sealed to seal a space that may exist between the bottom surface of the bottom plate 10 and the girder 1. It is preferable to provide the tape 15. When the filler 12 is injected into the shear pocket 11 so that the filler 12 is filled into the space between the prestressed concrete girder 1 and the bottom plate 10, the sealing tape 15 is The filler 12 is prevented from leaking to the outside.

As described above, in the connection structure and connection construction method according to the present invention, after the precast bottom plate 10 is mounted on the prestressed concrete girder 1, the prefabricated shear connector 11 is prestressed concrete girder 1 Is installed on. Therefore, there is no fear that the shear connector 11 will be damaged in the process of mounting the precast deck 10 to the prestressed concrete girder 1. Therefore, in the conventional proposal, there are various problems caused by damage to the stub, but the present invention can solve all of these problems.

On the other hand, in the present invention, in order to install the fastener 3 to the girder 1 in advance so that the prefabricated shear connector 11 can be easily assembled and installed on the prestressed concrete girder 1, the longitudinal direction of the girder 1 By using the fixture mounting member 7 spanning the reinforcing bars 4, the fixture 3 can be easily installed. In particular, when the bent portion is formed in the center of the fixture mounting member 7 in accordance with the width of the longitudinal reinforcing bar (4), the fastener (3) by simply inserting the bent portion between the longitudinal reinforcing bars (4) Since it can be installed in the correct position, the installation work of the fixture 3 is very easy and it is possible to prevent the occurrence of defects due to the positional change of the fixture (3).

As such, according to the connection structure and connection construction method of the present invention, the installation of the shear connector 11 can be made safely and easily, and thus can achieve a solid connection between the prestressed concrete girder and the precast deck The construction of composite bridges consisting of prestressed concrete girders and precast decks will be realized.

1 is a schematic perspective view showing a connection structure between a prestressed concrete girder and a precast deck according to the present invention.

Figure 2 is a schematic diagram of the installation configuration of the fastener is fastened with the prefabricated shear connector in order to be installed in the prestressed concrete girder 1 in the present invention.

3 is a cross-sectional view of one side girder along line A-A for one prestressed concrete girder in FIG.

Figure 4 is a schematic perspective view showing the construction of the entire bridge deck by connecting the neighboring precast deck.

5 is a schematic view showing a connection structure of a conventional prestressed concrete girder and precast concrete deck.

<Explanation of symbols for main parts of the drawings>

1: girder 2: shear connector

3: fixture 10: precast bottom plate

Claims (5)

  1. delete
  2. delete
  3. As the connection structure of the prestressed concrete girder 1 and the precast deck 10,
    A shear pocket 11 is formed through the precast bottom plate 10;
    In the upper portion of the prestressed concrete girder 1 , a fastener 3 composed of a tubular member having an insertion hole 6 formed therein is installed in a position where the front end pocket 11 is to be buried in advance. (3) is installed perpendicular to both ends of the fixture mounting member (7) , the fixture mounting member (7) has a bent portion is formed in the center so that the transverse position of the fixture (3) is not changed and the bent portion frist Concrete for girder fabrication is poured in the state of being installed between the longitudinal reinforcing bars 4 of the rest concrete girder 1, so that the insertion hole 6 of the fastener 3 is formed of the prestressed concrete girder 1 It is installed to be exposed to the upper surface;
    The prefabricated shear connector 2 is inserted into the insertion hole 6 of the fastener 3 through the top of the shear pocket 11 while the precast bottom plate 10 is mounted on the top of the girder 1. And fixed to the prestressed concrete girder 1 by being fastened;
    In the state where the prefabricated shear connector 2 is installed, the front pocket 11 is filled with a filler 12 to fill the space between the front pocket 11 and the bottom surface of the girder 1 and the precast bottom plate 10. By, the connection structure of the prestressed concrete girder and the precast bottom plate, characterized in that the girder (1) and the precast bottom plate 10 is integrally connected and synthesized.
  4. The method of claim 3,
    The prefabricated shear connector 11 is connected to the prestressed concrete girder and the precast bottom plate, characterized in that the screw is inserted into the fastener (3).
  5. As a connection construction method to connect the prestressed concrete girder (1) and the precast bottom plate to synthesize
    A precast bottom plate 10 is formed in the precast bottom plate 10 so that the front end pocket 11 is empty;
    The prestressed concrete girder 1 at the position where the front pocket 11 is to be placed is installed so that the fastener (3) consisting of a tubular member having an insertion hole (6 ) is buried, the fastener (3) ) Is installed perpendicular to both ends of the fastener mounting member 7 , the fastener mounting member 7 is bent in the center so that the transverse position of the fastener 3 is not changed, the bent portion is prestressed In the state in which the fixture mounting member 7 is installed in the state of being inserted between the longitudinal reinforcing bars 4 of the concrete girder 1, the concrete for girder manufacturing is poured so that the insertion hole 6 of the fixture 3 is prestressed. Manufacturing the prestressed concrete girder 1 into a structure that is installed to be exposed to an upper surface of the concrete girder 1;
    Mounting the precast bottom plate (10) on the prestressed concrete girder (1) such that the fastener (3) is in the position of the shear pocket (11);
    When the precast bottom plate 10 is mounted on the prestressed concrete girder 1, the prefabricated shear connector 2 is inserted through the top of the shear pocket 11 to be fastened with the fixture 3. and;
    Filling the space 12 between the front pocket 11 and the girder 1 and the lower surface of the precast bottom plate 10 by injecting a filler 12 into the shear pocket 11 is provided with the prefabricated shear connector (2) , Method of connecting the prestressed concrete girder and the precast bottom plate, characterized in that the girder (1) and the precast bottom plate 10 by integrally connecting.
KR20030036823A 2003-06-09 2003-06-09 Structures and Methods for Connection between Precast Decks and Prestressed Concrete Girders KR100535157B1 (en)

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KR20030036823A KR100535157B1 (en) 2003-06-09 2003-06-09 Structures and Methods for Connection between Precast Decks and Prestressed Concrete Girders

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100872822B1 (en) 2007-06-29 2008-12-09 노실근 Prestressed concrete girder which symmetry and an asymmetrical anchorage block
KR100984247B1 (en) 2010-06-10 2010-09-30 (주)케이지엔지니어링 Bridge construction method using strength connector detail joined with rebar of upper flange concrete
KR101050145B1 (en) * 2008-12-26 2011-07-19 재단법인 포항산업과학연구원 Construction method of continuous bridge applying pre-stress
KR101050168B1 (en) * 2008-12-26 2011-07-19 재단법인 포항산업과학연구원 Construction method of continuous bridge with spare deck
KR101440560B1 (en) * 2012-09-24 2014-09-17 재단법인 포항산업과학연구원 Strucutre of steel-concrete composite borad and construction method thereof
KR101957932B1 (en) 2018-10-19 2019-03-14 주식회사 신원알피씨 Girder and method bridge construction using the same

Families Citing this family (3)

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Publication number Priority date Publication date Assignee Title
KR101711202B1 (en) * 2015-06-29 2017-03-13 이동찬 Prefabricated precast concrete bridge deck
KR102098187B1 (en) * 2018-03-14 2020-04-07 인하대학교 산학협력단 Precast concrete slab partially of non-composite continuous girder bridge and construction method thereof
KR102153007B1 (en) * 2020-03-24 2020-09-07 이성원 Precast slab under groove and shear truss member and construction method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100872822B1 (en) 2007-06-29 2008-12-09 노실근 Prestressed concrete girder which symmetry and an asymmetrical anchorage block
KR101050145B1 (en) * 2008-12-26 2011-07-19 재단법인 포항산업과학연구원 Construction method of continuous bridge applying pre-stress
KR101050168B1 (en) * 2008-12-26 2011-07-19 재단법인 포항산업과학연구원 Construction method of continuous bridge with spare deck
KR100984247B1 (en) 2010-06-10 2010-09-30 (주)케이지엔지니어링 Bridge construction method using strength connector detail joined with rebar of upper flange concrete
KR101440560B1 (en) * 2012-09-24 2014-09-17 재단법인 포항산업과학연구원 Strucutre of steel-concrete composite borad and construction method thereof
KR101957932B1 (en) 2018-10-19 2019-03-14 주식회사 신원알피씨 Girder and method bridge construction using the same

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