KR20110109377A - Concrete u-girder bridge method of construction and the u-girder bridge structure - Google Patents

Concrete u-girder bridge method of construction and the u-girder bridge structure Download PDF

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Publication number
KR20110109377A
KR20110109377A KR1020100029077A KR20100029077A KR20110109377A KR 20110109377 A KR20110109377 A KR 20110109377A KR 1020100029077 A KR1020100029077 A KR 1020100029077A KR 20100029077 A KR20100029077 A KR 20100029077A KR 20110109377 A KR20110109377 A KR 20110109377A
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girder
parent
moment
unit
concrete
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KR1020100029077A
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Korean (ko)
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김병석
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(주)나우이앤씨
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Publication of KR20110109377A publication Critical patent/KR20110109377A/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
    • E01D19/00—Structural or constructional details of bridges
    • E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
    • E01D19/125—Grating or flooring for bridges
    • 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
    • E01D2101/20—Concrete, stone or stone-like material
    • E01D2101/24—Concrete
    • E01D2101/26—Concrete reinforced
    • E01D2101/28—Concrete reinforced prestressed
    • E01D2101/285—Composite prestressed concrete-metal

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

Abstract

The present invention relates to a bridge manufacturing method using a concrete girder, comprising: a girder connecting between a pillar and a pillar supported to form a bridge, and a parent cement portion connecting the girder, that is, a constant moment girder The girder is integrally formed on the upper surface of the above-described column part to be supported, and then, each of the moment moment unit girder is connected to each other to allow the bridge to be completed by construction on the site, and in the construction of a straight bridge. The present invention relates to a composite bridge sequencing method of a concrete girder and a composite bridge structure of a concrete girder for obtaining a bridge rounded in an arc shape according to characteristics and the like.

Description

CONCRETE U-GIRDER BRIDGE METHOD OF CONSTRUCTION AND THE U-GIRDER BRIDGE STRUCTURE}

The present invention relates to a bridge manufacturing method using a concrete girder, the girder connecting the pillar portion and the pillar portion supported to achieve the bridge, and the parent cement portion girder connecting the girder, that is, the constant moment portion girder Is formed integrally on the upper surface of the above-described pillar, and then connected to each of the moment moment unit girder to enable the bridge to be completed by construction on the site, as well as the characteristics of the construction site in the construction of a straight bridge The present invention relates to a composite bridge sequencing method of concrete girder and to a composite bridge structure of concrete girder for obtaining a bridge rounded in an arc.

In general, a bridge using a eugerder is a simple bridge that is a composite of a cast-in-place slab and a PSC girder, which is mounted on a pier in the form of a simple bridge after total prestressing is applied to the cross section of the PSC girder before synthesis. It is constructed to be resistant to additional dead and live loads. As such, the bridges constructed as simple bridges have to be installed with many expansion joints, which causes disadvantages such as deterioration of vehicle running and maintenance costs of the bridges.

In addition, it is disadvantageous in terms of economics because it is based on simple standards that are structurally disadvantageous in determining the resources of various member elements (e.g., shape and thickness of members, arrangement spacing, prestressed steel amount) of bridge superstructures. .

In addition, in the case of the existing bridge using the girder, most of the construction is impossible except for the installation of a relatively short bridge, and since only a straight bridge can be installed, there are a lot of restrictions on the installation site when the bridge is constructed by the girder. have.

The present invention has been made to solve the above problems, the purpose is to significantly reduce the installation cost according to the construction while making the installation and construction easier than the existing bridge.

In addition, when the bridge construction by the present invention has another object to enable the installation of a relatively long bridge.

In addition, the present invention has a further object to enable the installation of the bridge in the form of a straight line, it is possible to install the bridge in a state that is not constrained in the installation place, such as when the bridge construction, nature friendly and in harmony with the surrounding environment.

The present invention for achieving the above object,

Pillar construction step (S10) to form a pillar to form a support portion on the top and integrally formed with the support portion and having a girder connection portion formed vertically in the upward direction,

After manufacturing the steel wire and steel material on the inside of the upper side after the production step (S10) of the parent part portion girder that is coupled to both sides of the girder connecting portion of the column made by the pillar construction step (S10),

In order to connect the parent portion between the girder, the step of producing a constant moment portion girder to be produced in the field by combining the steel wire and steel in the lower side (S30),

Steps to connect between the parent part portion girder produced by the parent part portion girder production step (S20), the column portion and the girder connecting portion of the column portion (S40),

Primary tension and slab concrete pouring step (S50), which is to first strain the steel wire selected from the upper steel wire of the parent cement portion girder, and to place slab concrete in the upper space of the girder connection portion and the parent cement portion girder

Connect the constant moment unit girder obtained by the constant moment unit girder manufacturing step (S30) and the parent moment unit girder obtained by the parent moment unit girder manufacturing step (S20), respectively, first the constant moment The first step of tensioning the part of the steel wire of the secondary girder step connecting the parent moment unit girder (S60),

After the step of connecting the chief moment unit girder (S60), the second tension between the rest of the non-tensioned steel wire of the steel line of the bottom of the constant moment girder, and the rest of the non-tensioned steel wire in the parent moment girder, respectively, the bottom plate slab Concrete placing step of the moment moment slab concrete slab concrete slab (S70),

It is made of a composite bridge sequencing method of concrete girder, characterized in that the curb and pavement step (S80).

In addition, the present invention is a synthetic bridge structure constructed in accordance with the above-described method,

In the structure of the girder composite bridge made of a bridge body that is supported and connected to the upper side of the pillar portion 100,

The upper support portion 110 of the pillar portion 100, the concrete is placed in the upper portion of the support portion 110 to be integrally spaced apart a plurality in the width direction, but the steel wire ball 121 penetrates the upper inner side in the longitudinal direction Formed a plurality of, the girder connection portion 120 is embedded between a plurality of steel material 122 between the steel wire hole 121, a plurality of reinforcing bars 123 protruding to the front and rear surfaces, respectively,

Each of which is connected to the front and rear surfaces of the girder connecting portion 120, the steel wire 230 is embedded in the upper inner longitudinal direction, and the steel material 240 is embedded between the steel wires 230 and protrudes from the front and rear surfaces, respectively. Reinforcement unit 200 is embedded in the parent cement portion girder 200,

It has the same length as the separation distance between the parent cement girder 200 of the selected pillar portion 100 and the parent cement girder 200 of the next pillar portion 100, the "U" shape that is open upward It has a plurality of steel wires 310 is embedded in the lower side in the longitudinal direction and a plurality of steel 320 is embedded between the steel wires 310, the reinforcing bars 340 respectively protruding to the front and rear surfaces are embedded, The constant moment unit girder 300 to connect between the girder 200,

Connect each of the lower side of the parent moment unit girder 200 and connect the bottom surface of the slab at the bottom of the outer parent unit unit girder 200, and connect the lower side of the constant moment unit girder 300, respectively Characterized in that the configuration consisting of a steel pipe (P) connecting the bottom plate slab 350 between the bottom of the constant moment unit girder 300.

According to the present invention, the installation work at the bridge installation site is easy and easy, the installation can be expected to reduce the cost due to the ease of installation work.

In addition, according to the present invention, it is possible to install a bridge having a relatively long length, it is possible to install not only a straight bridge, but also a curved bridge can be expected the effect of free positioning of the bridge installation.

1 is a process chart showing the construction of the present invention in time series flow
Figure 2 is a perspective view showing the pillar portion in the present invention
FIG. 3 is a perspective view illustrating a parent cement portion girder connected to the girder connecting portion of FIG. 2.
Figure 4 is a perspective view showing a constant moment unit girder
5 is an exploded perspective view schematically illustrating a state in which the pillar portion of FIG. 2 and the parent cement portion girder of FIG. 3 are coupled to each other;
FIG. 6 is a side view illustrating a state in which a pillar portion and a parent cement portion girder are coupled by FIG. 5; FIG.
7A and 7B are cross-sectional views taken along line AA of FIG.
8 to 9 is a perspective view showing a state in which the parent portion portion and the moment moment unit girder is coupled, after the column portion and the parent moment unit girder is coupled
FIG. 10 is an enlarged view illustrating a constant moment part euger coupled between the parent moment part eugers in FIG. 9, illustrating a state in which each steel wire is tense. FIG.
FIG. 11 is an enlarged view illustrating a state in which a parent moment unit girder and a constant moment unit girder are coupled to each other based on the pillar in FIG. 10.
12 is a cross sectional view taken along line CC of FIG.
Figure 13 is a schematic diagram showing a state in which the curb and packaging is completed
14 is a plan view of the general form viewed from above of the bridge when constructed by the installation of the bridge in a curved shape;

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

The present invention is to form a pillar pillar construction step (S10), the parent moment unit jugder manufacturing step (S20), the moment moment unit jugder manufacturing step (S30), the pillar portion and the parent portion unit jugder connection step (S40) , A series of primary tension and slab concrete pouring step (S50), the government moment part girder connection step (S60), the constant moment part girder bottom plate slab concrete pouring step (S70), curb and pavement step (S80) It is possible to build a finished girder type bridge by the process.

This will be described with reference to the accompanying drawings for each step in chronological order.

Column  Construction stage- S10

Pillar construction step (S10) in the present invention means a process for constructing a pillar for receiving the bridge to be constructed.

The pillar portion 100 in the present invention is connected to form the supporting portion 110 on the upper end, and the girder connecting portion 120 that is casted vertically and vertically above the supporting portion 110 is formed.

The girder connection portion 120 and the support portion 110 is placed on the upper portion of the pillar portion 100 to be formed integrally.

As shown in the drawing, the support 110 has a shape that is open in the form of a plate at the top of the pillar portion 100 and is cured concrete, and the three girder connection 120 at the top of the support 110 is integrated As it has a structure to cure concrete.

Here, the girder connecting portion 120 is provided with a plurality of steel wires 121 therein while being protruded in the front and rear sides, respectively, as shown in the figure, such as "I" section steel at the position where the steel wires 121 are disposed Steels 122 are embedded and allowed to cure.

In addition, the reinforcing bars 123 protruding from the front and rear side outer circumferential surfaces of the girder connecting portion 120 are internally cured.

Such a rebar 123 is configured to be connected to and coupled to the parent portion unit girder 200 to be described later.

On the other hand, the both sides of the girder connecting portion 120, the plate 124, each of which is made of a steel plate is interpolated and fixed so that the ends thereof protrude into the entire girder connecting portion 120, respectively.

Such a plate 124 is to be connected to the plate 210 is provided on each side of the parent portion unit girder 200, respectively.

In order to interconnect the plate 210 of the plate 124 and the parent portion unit girder 200 using the joint plate 220 as shown in FIGS. 5 to 6.

Parent section Euger  Production Steps- S20

This step refers to a process of obtaining the parent portion unit juger 200 to be connected to the above-mentioned columnar connection unit 120 of the pillar portion 100.

As shown in FIG. 3, the parent cement portion girder 200 has the same cross section as the girder connecting portion 120 of the pillar portion 100, and the steel wire 230 and the steel material 240 are formed inside the upper portion. Each is drawn and cured.

The steel wire 230 is provided with a plurality of to pull the steel wire 230 during the first tension operation in the retracted state to be able to offset the parent moment acting on the parent portion unit girder 200.

In addition, both ends of the parent part portion girder 200 is to be connected to the above-described girder connecting portion 120 and the constant moment portion girder 300 to be described later, the girder connecting portion 120 and the constant moment portion Plate 210 is provided to be connected to the plate 124, 330 of the girder 300, the plate 210, 330 is a parent moment unit girder 200 and a constant moment unit girder 300 Both ends of the both sides are fixed to have a form protruding.

On the other hand, the plate 210 and the plate 124 of the euger connecting portion 120 and the protruding portion of the parent portion juger 200 is spaced apart, and to connect them by adopting the above-described joint plate 220 It is connected to each other using fastening means such as bolts.

In addition, a plurality of reinforcing bars 250 are inserted into the parent cement portion girder 200 to protrude after the side end inside which the joint plate 220 is fixed.

The reinforcing bar 250 corresponds to each of the reinforcing bars 123 inwardly protruding from the girder connecting portion 120 of the pillar portion 100 and protrudes.

Constant moment part Euger  Production Steps- S30

This step refers to the step of curing the concrete to obtain a constant moment portion girder 300 having a long length constituting the bridge.

As shown in FIG. 3 or FIGS. 5 and 6, the constant moment part girder 300 is formed by the pillar part 100 and the girder connection part 120 of the pillar part 100, which are installed at a pier, that is, spaced apart from each other by a predetermined distance. It refers to a member for connecting between the parent portion unit girder 200 is connected.

Such a constant moment unit girder 300 is obtained by curing the concrete to have a shape that is upwardly open and has a shape such as a cross section of a cup, unlike the parent moment unit girder 200, the constant moment unit girder 300 Steel wire 310 and the steel 320 is embedded in the lower inner side of the concrete to cure.

In addition, a plurality of reinforcing bars 340 are inserted into and protruded from both side ends of the constant moment portion girder 300, respectively, and the length of the plate 330 is fixed to both sides of the constant moment portion girder 300, respectively. In each direction.

When the plate 330 is connected to the plate 210 of the above-mentioned parent portion unit Euder 200, it is possible to be connected by a joint plate 220 connecting the mutual plate 330, 210.

Pillar Parent section Euger  Connection step- S40

This step refers to a step of interconnecting the girder connecting portion 120 and the parent cement portion girder 200 formed in the pillar portion 100 in the installed state as shown in FIGS. 5 to 7.

5 and 6, as described above, the plate 124 protruding toward the front and rear sides of the girder connecting portion 120 and the plate 210 of the parent part portion girder 200 are connected to the joint plate 220. By means of fastening means such as bolts, to be connected.

Meanwhile, in the state in which the girder connecting portion 120 and the parent cement portion girder 200 are fastened by using the joint plate 220, the one side of the parent cement portion girder 200 is inclined downward by the load. Since a phenomenon occurs, it is necessary to prevent this.

To this end, it is preferable to form mounting anchor members 260 respectively connecting the inner side surfaces of the parent cement portion girder 200 and the upper both inner sides of the girder connecting portion 120, respectively.

Due to the mounting anchor member 260, it is possible to prevent the parent portion unit girder 200 from sagging due to bending moment and load action in the downward direction.

As such, when the girder connecting portion 120 and the parent cement girder 200 of the pillar portion 100 are temporarily connected by using the joint plate 220, the girder corresponding to the end side of the parent cement girder 200 is provided. Space between the ends of the connection portion 120 is generated, the reinforcement space 123 of the girder connecting portion 120 and the reinforcement 250 of the parent portion portion of the girder 200 is in the protruding state do.

In the present invention, such a space is denoted by "S".

The separation space (S) is generated in the connecting portion of the parent cement portion juger 200 and the euger connecting portion 120 as described above, and the parent cement portion yuger 200 and the positive moment portion to be described later It will also occur in the connecting portion of the girder 300, in the present invention will be collectively referred to as the separation space (S) as described above.

As such spaced space (S) by installing a formwork, such as concrete, and curing treatment, so that the connection of the girder connecting portion 120 and the parent portion of the girder 200 is made to be firm.

1st tension  And slab concrete Pour stage  - S50

This step refers to the step of first placing the upper steel wire of the parent cement portion girder, and placing slab concrete in the space above the girder connection portion and the parent cement portion girder.

As described above, the plurality of steel wires 230 are formed at the periphery of the steel material 240 in a state in which the plurality of steel materials 240 are embedded in the upper portion of the upper portion of the girder 200. .

Some of the plurality of steel wires 230-1 of the plurality of steel wires 230 as described above primarily pass through the upper inside of the parent portion girder 200, and the top of the upper girder connection portion 120 of the pillar portion 100. After passing through the side steel wire hole 121 is formed through the other parent portion portion of the euger 200 side connected to the other side of the girder connecting portion 120.

The steel wire 230-1 is tensioned at both sides of the parent part portion girder 200, which are connected in both directions of the girder connecting portion 120, respectively, to be fixed at both ends.

The reason for tensioning the steel wires 230-1 is to offset the parent moments generated when the constant moment unit girder 300 is connected to the parent moment girder 200 respectively connected to both sides of the girder connecting unit 120. For sake.

On the other hand, after the slab concrete pouring work in the upper space of the parent cement portion jug 200 as described above, as shown in Figure 7, the steel pipe for interconnecting the three parent cement portion jug 200 (P) ) And to install and install the steel pipe (P) for connecting the bottom side of the slab at the lower side of each of the parent cement portion girder 200 on both sides.

Government Moment Department Euger  Connection step- S60

This step is for connecting each of the moment moment euger obtained by the production of the moment moment euger step (S30), and the parent moment portion of the juger obtained by the production of the parent moment portion juger (S20), respectively Means step.

To this end, as described above, in the field, the steel wire 300-1 provided at the lower end of the constant moment portion girder 300 having a cup cross section shape having a cup cross-section shape is opened upward. First, the first tension.

It is to be connected to the parent portion unit euger 200, which are connected in both directions of the euger connecting portion 120 of the pillar portion 100.

The pillar portion 100 is spaced apart at a predetermined distance from the site where the bridge is constructed, the length of the constant moment portion girder 300 is the length of the parent portion between the pillar portion 100 and the pillar portion 100 It should be made equal to the separation length between girders 200.

On the other hand, inside the bottom of the constant moment portion girder 300, a plurality of "I" shaped steel 320 is embedded in the concrete to cure, and the steel wire 310 penetrating the lower side of the steel 320 in the longitudinal direction is In order to be formed, the steel wire 310 is used to tension so that the warp phenomenon of the constant moment portion girder 300 can be suppressed in the concrete slab slab concrete pouring step (S70).

As shown in FIGS. 8 to 9, the constant moment unit girder 300 having the appropriate length is a constant moment unit girder in a state in which both ends are lifted by using a crane or the like at the positions of both pillars 100. Each of the plates 210 and 330 which are fixed to the end side of the end side 300 and the end side of the parent cement portion girder 200 and protrude in the longitudinal direction is connected using the joint plate 220.

Then, form the die or the like in the separation space (S) formed on the end side of the constant moment portion girder 300 and the end portion of the parent moment portion girder 200 by this connected portion, that is, the joint plate 220. After the concrete is poured into the curing treatment, so that the combination of the constant moment portion girder 300 and the parent portion portion girder 200 is made firmly.

Constant moment part Euger  Slab slab concrete Pour stage  - S70

This step refers to a process of secondary tensioning the steel wire 310-2 of the bottom of the moment moment girder, and placing the bottom plate slab concrete on the upper surface after the step of connecting the moment girder (S60).

As described above, when the connecting operation between the parent moment portion yuger 200 and the constant moment portion yuder 300 is completed, as shown in FIG. The plate slab 350 is to be cured concrete.

When the pouring process of the bottom plate slab 350 is completed, the bottom of the bottom plate slab 350 and the outer moment of the outer portion of the constant moment portion of the euger 300 300 steel pipe (P) The connection is fixed using, and fixed to the connection by using a steel pipe (P) to the lower side of the constant moment unit girder 300 (see Fig. 12).

In addition, the plurality of steel wires (230-2) provided to the upper inner side leading to a portion of the upper slab of the parent portion portion of the jug 200, the connecting portion of the euger 120 and the constant moment portion of the euger 300.

As described above, in the state of passing the constant moment portion girder bottom slab concrete pouring step (S70), as shown in Figure 13 it is possible to construct the completed bridge through the curb and pavement step (S80).

On the other hand, in the case of the present invention, as shown in Figure 14, the bridge can be constructed taking a curved form, for example, when casting the moment moment euger 300 300 in the field, to be round when viewed in plan, The overall shape of the bridge may be constructed in a curved form.

S10; Column construction stage
S20; Production stage of the parent cement section
S30; Step of manufacturing momentum girder
S40; Connection stage of column and parent section
S50; Primary tension and slab concrete pouring stage
S60; Connection stage of Government Moment Yuger
S70; Concrete pouring stage of floor slab concrete slab
S80; Curb and packing steps
S; Separation space P; Steel pipe
100; Pillar portion 110; Support
120; Euger connection 121; Liner
122; Steel 123; rebar
124; Plate 200; Parent Cement Euger
210; Plate 220; Joint plate
230, 230-1, 230-2; Liner 240; Steel
250; Rebar 260; Mounting Anchor Member
300; Constant moment part girder 310, 310-1, 310-2; Liner
320; Steel 330; plate
340; Rebar 350; Slab slabs

Claims (5)

Pillar construction step (S10) to form a pillar to form a support portion on the top and integrally formed with the support portion and having a girder connection portion formed vertically in the upward direction,
After manufacturing the steel wire and steel material on the inside of the upper side after the production step (S10) of the parent part portion girder that is coupled to both sides of the girder connecting portion of the column made by the pillar construction step (S10),
In order to connect the parent portion between the girder, the step of producing a constant moment portion girder to be produced in the field by combining the steel wire and steel in the lower side (S30),
Steps to connect between the parent part portion girder produced by the parent part portion girder production step (S20), the column portion and the girder connecting portion of the column portion (S40),
Primary tension and slab concrete pouring step (S50), which is to first strain the steel wire selected from the upper steel wire of the parent cement portion girder, and to place slab concrete in the upper space of the girder connection portion and the parent cement portion girder
Connect the constant moment unit girder obtained by the constant moment unit girder manufacturing step (S30) and the parent moment unit girder obtained by the parent moment unit girder manufacturing step (S20), respectively, first the constant moment The first step of tensioning the part of the steel wire of the secondary girder step connecting the parent moment unit girder (S60),
After the step of connecting the chief moment unit girder (S60), the second tension between the rest of the non-tensioned steel wire of the steel line of the bottom of the constant moment girder, and the rest of the non-tensioned steel wire in the parent moment girder, respectively, the bottom plate slab Concrete placing step of the moment moment slab concrete slab concrete slab (S70),
Synthesis bridge sequencing method of concrete girder, characterized in that consisting of curb and pavement step (S80). The method of claim 1,
Column unit and the parent part unit girder connection step (S40), the government moment unit unit girder connection step (S60) between the column portion of the girder connecting portion and the parent portion unit girder space (S), and the parent section unit girder The method of sequencing the composite bridge of the concrete girder, including the concrete is poured into the space (S) of the space moment girder. In the structure of the girder composite bridge made of a bridge body that is supported and connected to the upper side of the pillar portion 100,
The upper support portion 110 of the pillar portion 100, the concrete is placed in the upper portion of the support portion 110 to be integrally spaced apart a plurality in the width direction, but the steel wire ball 121 penetrates the upper inner side in the longitudinal direction Formed a plurality of, the girder connection portion 120 is embedded between a plurality of steel material 122 between the steel wire hole 121, a plurality of reinforcing bars 123 protruding to the front and rear surfaces, respectively,
Each of which is connected to the front and rear surfaces of the girder connecting portion 120, the steel wire 230 is embedded in the upper inner longitudinal direction, and the steel material 240 is embedded between the steel wires 230 and protrudes from the front and rear surfaces, respectively. Reinforcement unit 200 is embedded in the parent cement portion girder 200,
It has the same length as the separation distance between the parent cement girder 200 of the selected pillar portion 100 and the parent cement girder 200 of the next pillar portion 100, the "U" shape that is open upward It has a plurality of steel wires 310 is embedded in the lower side in the longitudinal direction and a plurality of steel 320 is embedded between the steel wires 310, the reinforcing bars 340 respectively protruding to the front and rear surfaces are embedded, The constant moment unit girder 300 to connect between the girder 200,
Connect each of the lower side of the parent moment unit girder 200 and connect the bottom surface of the slab at the bottom of the outer parent unit unit girder 200, and connect the lower side of the constant moment unit girder 300, respectively Synthetic bridge structure of concrete girder, characterized in that consisting of a steel pipe (P) connecting the bottom plate slab (350) between the bottom of the constant moment unit girder (300). The method of claim 3, wherein
Plates 124, 210 and 330, one end of which is projected to each side of each of the girder connecting portion 120, the parent portion portion girder 200, and the constant moment portion girder 300, are fixed, and each plate ( 124) (210) 330 composite bridge structure of the concrete girder comprising the connection by the joint plate (220). The method of claim 3, wherein
The constant moment unit girder 300 is a composite bridge structure of a concrete girder, which includes being rounded in an arc shape and placed in concrete.
KR1020100029077A 2010-03-31 2010-03-31 Concrete u-girder bridge method of construction and the u-girder bridge structure KR20110109377A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103556564A (en) * 2013-10-31 2014-02-05 福州大学 Assembly-type slab bridge on basis of connection of steel diaphragm plates and construction method thereof
CN113718660A (en) * 2021-09-27 2021-11-30 皖西学院 Large-span quick-connection assembly type prefabricated part and construction method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103556564A (en) * 2013-10-31 2014-02-05 福州大学 Assembly-type slab bridge on basis of connection of steel diaphragm plates and construction method thereof
CN103556564B (en) * 2013-10-31 2016-06-29 福州大学 A kind of assembled slab bridge based on the connection of steel diaphragm plate and construction method thereof
CN113718660A (en) * 2021-09-27 2021-11-30 皖西学院 Large-span quick-connection assembly type prefabricated part and construction method thereof

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