KR20140146403A - On the upper flange of the steel girder reinforced concrete cation and steel girder construction method to synthesize - Google Patents

On the upper flange of the steel girder reinforced concrete cation and steel girder construction method to synthesize Download PDF

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KR20140146403A
KR20140146403A KR20130069057A KR20130069057A KR20140146403A KR 20140146403 A KR20140146403 A KR 20140146403A KR 20130069057 A KR20130069057 A KR 20130069057A KR 20130069057 A KR20130069057 A KR 20130069057A KR 20140146403 A KR20140146403 A KR 20140146403A
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upper flange
steel girder
concrete
reinforcing concrete
steel
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KR20130069057A
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Korean (ko)
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노우현
노경범
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우경기술주식회사
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Publication of KR20140146403A publication Critical patent/KR20140146403A/en

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
    • E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling 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
    • E01D2101/268—Composite concrete-metal

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  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The present invention relates to a method for constructing concrete concrete for increasing rigidity in a steel U-girder or an upper flange of an I-girder, which is easy to construct, cheap in construction cost, durable and easy to apply universally The present invention provides a method of constructing a steel girder by combining a reinforcing concrete with an upper flange of a steel girder.
In order to achieve the above-mentioned object, a steel girder construction method in which a reinforcing concrete is combined with an upper flange of a steel girder according to the present invention is characterized in that the upper flange of a steel girder is combined with a concrete for reinforcing an upper flange to improve the performance of the steel girder A method of constructing a steel girder and an upper flange reinforcing concrete (S1); (S 2) alternately mounting the steel girders on a pier; (S 3) connecting the upper flange reinforcing concrete structures to each other by connecting the upper flange reinforcing concrete structures to the upper flange of the steel girder; Sealing the upper and lower flanks of the upper flange of the steel girder with the upper flange of the steel girder and sealing the upper and lower portions of the bottom face of the steel girder with the resin sealing agent, (S 4) of joining the upper flange reinforcement concrete with the upper flange of the steel girder by injecting resin; (S 5) of injecting non-shrinkage mortar into the front-end composite pocket portion having the shear connection member on the upper flange of the steel girder to synthesize the upper flange reinforcing concrete and the upper flange of the steel girder; A step (S6) of installing a mold on the upper surface of the upper flange reinforcing concrete member attached to the upper flange of the steel girder, placing the slab reinforcement on the mold, and placing and curing the slab concrete; And disassembling the die (S 7).
According to another aspect of the present invention, there is provided a method of constructing a steel girder by combining a reinforcing concrete with an upper flange of a steel girder according to the present invention, comprising: combining an upper flange and an upper flange with a concrete to reinforce the steel girder, (S 1) of manufacturing a concrete flange for reinforcing an upper flange serving as both a steel girder and a deck plate; (S 2) alternately mounting the steel girders on a pier; (S 3) connecting the upper flange reinforcing concrete concession to the upper flange of the steel girder by connecting the upper flange reinforcing concrete concretes together with the deck plate, and connecting the upper flange reinforcing concrete concretes together with the deck plate; A concrete sheathed synthetic pocketing with a shear connection material sealing the front and back and left and right portions of the bottom surface of the upper flange of the steel girder and the upper surface flange of the upper flange reinforced by both the deck plate and the upper flange of the steel girder, (S 4) of joining the upper flange of the steel girder with the upper flange reinforcing concrete by injecting an epoxy resin into the upper portion of the upper flange; (S 5) of injecting non-shrinkage mortar into a front-end synthetic pocket portion having a shear connection member on the upper flange of the steel girder to synthesize an upper flange reinforcing concrete for the deck plate and an upper flange of the steel girder; A step (S6) of placing a slab reinforcement on the upper surface of the upper flange reinforcing concrete combined with the upper flange of the steel girder and acting as a deck plate, installing a mold for a barrier wall, and then placing and curing the slab concrete; And disassembling the form for the barrier wall (S7).

Description

Technical Field [0001] The present invention relates to a method of constructing a steel girder by combining a reinforcing concrete with an upper flange of a steel girder,

The present invention relates to a method of constructing a steel girder by combining a reinforcing concrete with an upper flange of a steel girder, and more particularly, to a method of constructing a steel concrete girder or an upper flange of an I- .

Generally, the method of increasing the compression resistance of the upper flange during the construction of the bottom plate slab in steel girder is to increase the amount of steel of the upper flange or to increase the compression resistance of the upper flange by appropriately synthesizing the concrete.

In this case, the method of increasing the amount of steel material of the upper flange of electrons is not used as a method which does not consider economical efficiency. The method of synthesizing the latter concrete to the upper flange of the steel girder is, The method of synthesizing concrete is difficult because it is not universally applied.

In order to solve the above-mentioned problems, the open-form steel composite concrete steel girder and the manufacturing method thereof have been proposed in Japanese Patent No. 10-0869568.

As shown in FIGS. 1 to 1C, the conventional open-form composite concrete steel girder is composed of a lateral side steel member 21 having a wide upper side and a narrow bottom side disposed on both sides, Shaped steel girder 20 provided with a U-shaped steel material 23 or an L-shaped steel material 25 at an upper portion of the side steel material 21 and a U-shaped steel material 23 having an U- Shaped concrete composite steel girder 30 having an open section concrete 24 provided with reinforced concrete and laid concrete with concrete placed thereon and an L-shaped steel material A reinforcing bar is disposed in a space between the L-shaped steel plates 25 and 25 and the fixing holes 13 are provided at both ends in the longitudinal direction and the PS steel wire 12 is connected to the fixing holes 13 provided at both ends , Concrete is poured into the PS steel wire (12), and a torsional force is applied to the PS steel wire (12) Reinforced steel is placed on the inner surface of the side steel material 21 of the opening forming steel girder 20 and the bottom steel material 22 and the concrete is laid on the inner surface of the bottom steel material 22 so that the abdomen 41 and the bottom concrete 42 are simultaneously A composite concrete reinforced concrete steel girder 40 provided with an end finishing steel plate 44 at both ends of the installed abdomen 41 and the bottom concrete 42, 30, and 40) are installed on both sides of the side where the static moment is generated by the distribution diagram in which the static and bending moment occurs, and in the central section where the static moment is generated, Shaped reinforced concrete steel girder 10 made by assembling the open-form concrete steel girder 40 and then assembling them together by welding or bolt-nuts.

In the conventional method of making a steel composite concrete steel girder having an open form, the lateral steel member 21 is provided on both sides of the lower portion narrowly and the bottom steel member 22 is welded to the lower portion of the lateral steel member 21. [ And a U-shaped steel material 23 or an L-shaped steel material 25 is provided on the upper side of the side steel material 21 to fabricate an opening-formed steel material girder 20, (22), and an open section concrete (24) is installed by installing concrete on the upper side of the installed side steel material (21). An L-shaped steel material 25, and a fixing member 13 is provided at both ends in the longitudinal direction of the girder 20, a PS steel wire 12 is connected to a fixing member 13 provided at both ends of the girder 20, And a tension force is applied to the PS steel wire 12, Reinforced concrete is placed on the inner surface of the side steel member 21 and the bottom steel member 22 of the opening forming steel girder 20 and the concrete is poured into the abdomen 41 and the bottom concrete 42, And an end finishing steel plate 44 is provided at both ends of the installed abdomen 41 and the floor concrete 42. The composite concrete reinforced concrete steel girder 40 is manufactured as described above, (30) are formed on both sides of the steel girders (30, 40) where the momentum is generated by the distribution diagram in which the positive and negative bending moments are generated, and the center girder The concrete reinforced concrete steel girder 40 is assembled by mutual welding or bolt nuts to manufacture a reinforced concrete composite concrete steel girder 10.

A conventional open-form composite concrete steel girder having the above-described construction and a method of manufacturing the same include a method of increasing the rigidity of the upper flange of the steel girder by synthesizing concrete with the upper flange. It is difficult to apply it universally even though the construction is complicated and it is difficult and economical in terms of its applicability due to the fact that it should be constructed by putting it into the field.

Therefore, it is urgently required to develop a construction method and structure that can increase the stiffness of the upper flange of the steel girder with a simple construction site.

Korean Patent Registration No. 10-0869568 (November 13, 2008)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for constructing a concrete member for increasing rigidity in a steel U- It is an object of the present invention to provide a method of constructing a steel girder by combining a reinforcing concrete with an upper flange of a steel girder so that the construction cost is low, durability is excellent, and anyone can easily apply it universally.

In order to achieve the above-mentioned object, a steel girder construction method in which a reinforcing concrete is combined with an upper flange of a steel girder according to the present invention is characterized in that the upper flange of a steel girder is combined with a concrete for reinforcing an upper flange to improve the performance of the steel girder A method of constructing a steel girder and an upper flange reinforcing concrete (S1); (S 2) alternately mounting the steel girders on a pier; (S 3) connecting the upper flange reinforcing concrete structures to each other by connecting the upper flange reinforcing concrete structures to the upper flange of the steel girder; Sealing the upper and lower flanks of the upper flange of the steel girder with the upper flange of the steel girder and sealing the upper and lower portions of the bottom face of the steel girder with the resin sealing agent, (S 4) of joining the upper flange reinforcement concrete with the upper flange of the steel girder by injecting resin; (S 5) of injecting non-shrinkage mortar into the front-end composite pocket portion having the shear connection member on the upper flange of the steel girder to synthesize the upper flange reinforcing concrete and the upper flange of the steel girder; A step (S6) of installing a mold on the upper surface of the upper flange reinforcing concrete compounded to the upper flange of the steel girder, placing the slab reinforcement in the mold, and placing and curing the slab concrete; And disassembling the die (S 7).

According to another aspect of the present invention, there is provided a method of constructing a steel girder by combining a reinforcing concrete with an upper flange of a steel girder according to the present invention, comprising: combining an upper flange and an upper flange with a concrete to reinforce the steel girder, (S 1) of manufacturing a concrete flange for reinforcing an upper flange serving as both a steel girder and a deck plate; (S 2) alternately mounting the steel girders on a pier; (S 3) connecting the upper flange reinforcing concrete concession to the upper flange of the steel girder by connecting the upper flange reinforcing concrete concretes together with the deck plate, and connecting the upper flange reinforcing concrete concretes together with the deck plate; A concrete sheathed synthetic pocketing with a shear connection material sealing the front and back and left and right portions of the bottom surface of the upper flange of the steel girder and the upper surface flange of the upper flange reinforced by both the deck plate and the upper flange of the steel girder, (S 4) of joining the upper flange of the steel girder with the upper flange reinforcing concrete by injecting an epoxy resin into the upper portion of the upper flange; (S 5) of injecting non-shrinkage mortar into a front-end synthetic pocket portion having a shear connection member on the upper flange of the steel girder to synthesize an upper flange reinforcing concrete for the deck plate and an upper flange of the steel girder; A step (S6) of placing a slab reinforcement on the upper surface of the upper flange reinforcing concrete combined with the upper flange of the steel girder and acting as a deck plate, installing a mold for a barrier wall, and then placing and curing the slab concrete; And disassembling the form for the barrier wall (S7).

As described above, the steel girder construction method in which the reinforcing concrete structure is combined with the upper flange of the steel girder according to the present invention has the following effects.

First, the present invention can economically and efficiently construct a concrete case for increasing the upper flange compression resistance on the upper flange of the steel girder.

Second, the present invention is advantageous in that the stress of the upper flange is absorbed by the precast concrete case, thereby reducing the amount of steel used in the steel girder, thereby increasing the economic efficiency.

Third, the construction of the present invention is simple and can be universally applied.

Fig. 1A is an exemplary view showing a longitudinal section of a conventional open-form composite concrete steel girder,
FIG. 1B is a cross-sectional view taken along line AA of FIG. 1A,
FIG. 1C is a cross-sectional view taken along line BB of FIG. 1A,
FIG. 2A is a perspective view showing a concrete concrete structure for an upper flange reinforcement of a steel girder according to the present invention,
FIG. 2B is a cross-sectional view of a concrete concrete structure for reinforcing an upper flange of a steel girder according to the present invention,
FIG. 2C is a perspective view showing a concrete structure formwork for orthogonal upper flange reinforcement of a steel girder according to the present invention, FIG.
FIG. 3A is a perspective view showing a curved concrete concrete structure for reinforcing an upper flange of a steel girder according to the present invention,
FIG. 3b is a cross-sectional view of a curved concrete concrete structure for reinforcing an upper flange of a steel girder according to the present invention,
FIG. 3c is a perspective view showing a curved concrete concrete formwork for reinforcing an upper flange of a steel girder according to the present invention, FIG.
FIG. 4A is a perspective view showing a state in which both ends of an upper flange reinforcing concrete frame of a steel girder according to the present invention is coated with an epoxy resin, FIG.
FIG. 4B is a cross-sectional view showing a state in which both ends of an upper flange reinforcing concrete casing of a steel girder according to the present invention are coated with an epoxy resin,
FIG. 5A is a perspective view showing a state in which a steel bar is inserted by forming a connecting hole at both ends of a concrete flange for reinforcing an upper flange of a steel girder according to the present invention,
FIG. 5B is a sectional view showing a state in which a connecting rod is formed at both ends of a concrete flange for reinforcing an upper flange of a steel girder according to the present invention,
FIG. 6A is a perspective view showing a state in which a connection connecting pocket portion and a connecting reinforcing bar are formed at both ends of an upper flange reinforcing concrete member of a steel girder according to the present invention,
FIG. 6B is a sectional view showing a state in which a connection connecting pocket portion and a connecting reinforcing bar are formed at both ends of an upper flange reinforcing concrete frame of a steel girder according to the present invention,
FIGS. 7A to 13C are cross-sectional views illustrating a process of installing an upper flange reinforcing concrete member on a substantially upper flange according to the present invention.
FIGS. 14A to 20C are views showing a process of installing an upper flange reinforcing concrete member on an almost upper flange of a steel material according to the present invention.
21A is a perspective view illustrating a concrete structure for orthopedic use for upper flange reinforcement combined with a deck plate according to the present invention,
FIG. 21B is a cross-sectional view of a concrete concrete structure for upper flange reinforcement combined with a deck plate according to the present invention,
FIG. 21C is a perspective view showing a concrete concrete formwork for orthopedic use for upper flange reinforcement combined with a deck plate according to the present invention, FIG.
22A is a perspective view showing a curved concrete concrete frame for reinforcing an upper flange serving as a deck plate according to the present invention,
22B is a cross-sectional view of a curved concrete concrete structure for reinforcing an upper flange serving as a deck plate according to the present invention,
FIG. 22C is a perspective view showing a curved concrete concrete frame form for upper flange reinforcement combined with a deck plate according to the present invention, FIG.
23A is a perspective view showing an embodiment of an upper flange reinforcing concrete structure serving as a deck plate according to the present invention,
23B is a perspective view and a sectional view showing an embodiment of an upper flange reinforcing concrete deck plate according to the present invention,
24A is a perspective view showing a state in which both ends of a concrete flange for reinforcing an upper flange serving as a deck plate are coated with an epoxy resin on an upper flange of a steel girder according to the present invention,
FIG. 24B is a sectional view showing a state where both ends of a concrete flange for reinforcing upper flange serving as a deck plate are coated with an epoxy resin on an upper flange of a steel girder according to the present invention,
25A is a perspective view showing a state in which a connecting rod is formed at both ends of an upper flange reinforcing concrete deck plate serving as a deck plate in an upper flange of a steel girder according to the present invention,
FIG. 25B is a sectional view showing a state in which a connecting rod is formed at both ends of an upper flange reinforcing concrete deck plate serving as a deck plate in an upper flange of a steel girder according to the present invention,
26A is a perspective view showing a state in which a connection flange of a steel girder according to the present invention is provided with a connection pocket portion and a connecting reinforcing bar at both ends of an upper flange reinforcing concrete structure serving as a deck plate,
FIG. 26B is a sectional view showing a state in which a connection flange of a steel girder according to the present invention is provided with a connection pocket portion and a connecting reinforcing bar at both ends of an upper flange reinforcing concrete structure serving as a deck plate,
FIGS. 27A to 33C are cross-sectional views illustrating a process of installing an upper flange reinforcing concrete deck and an upper flange reinforcing concrete on an almost upper flange according to the present invention.
FIGS. 34A to 40C are views showing a process of installing a concrete flange for reinforcing upper flange serving as a deck plate on a nearly upper flange of a steel according to the present invention.
FIG. 41A is a stress distribution diagram when the upper flange of the steel girder according to the present invention does not have an upper flange reinforcing concrete,
41B is a stress distribution diagram when the upper flange of the steel girder according to the present invention has an upper flange reinforcing concrete structure.

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

[Concrete concrete]

FIG. 2B is a cross-sectional view of a concrete casing for reinforcing an upper flange of a steel girder according to the present invention, and FIG. 2C is a cross-sectional view of the concrete girder for reinforcing an upper flange of a steel girder according to the present invention. 3 is a perspective view showing a concrete concrete concrete frame for reinforcing an upper flange of a steel girder according to the present invention, FIG. 3 (a) is a perspective view showing a concrete concrete concrete frame for reinforcing an upper flange of a steel girder according to the present invention, 3C is a perspective view illustrating a concrete concrete formwork for reinforcing an upper flange of a steel girder according to the present invention. FIG. 4A is a perspective view of a concrete girder according to an embodiment of the present invention. The state in which both ends of the concrete flange for reinforcing the upper flange of the steel girder according to the invention is coated with epoxy resin is shown in Fig. And FIG. 4B is a cross-sectional view showing a state in which both ends of a concrete frame for reinforcing an upper flange of a steel girder according to the present invention is coated with an epoxy resin. FIG. 5A is a perspective view of a concrete girder, And FIG. 5B is a sectional view showing a state in which a connecting rod is formed at both ends of the upper flange reinforcing concrete of the steel girder according to the present invention to insert a steel bar, and FIG. 5B is a cross- 6a is a perspective view showing a state in which a connection connecting pocket portion and a connecting reinforcing bar are formed at both ends of a concrete flange for reinforcing an upper flange of a steel girder according to the present invention and FIG. 6b is a perspective view of the upper end portion of a concrete girder for reinforcing an upper flange of a steel girder according to the present invention Fig. 5 is a cross-sectional view showing a state in which an engagement connection pocket and a connecting reinforcing bar are formed; Fig.

As shown in these drawings, the upper flange reinforcing concrete structure 12 of the steel girder according to the present invention is a rectangular or shaped upper flange reinforcing concrete structure (not shown) provided on the upper flange 18 of the steel girder 10 12) of the steel girder (10) is formed as a unit concrete casting with a predetermined length, and the upper flange reinforcing concrete (12) is formed by a non-shrinking mortar (28) The upper flange reinforcing concrete front shear synthesis pocket portion 24 is formed so that the upper flange reinforcing concrete member 18 and the upper flange reinforcing concrete member 12 can be synthesized and a shear connection member 22 is formed on the upper surface, And the upper flange reinforcing concrete connection flange 38 is formed on the vertical plane by the epoxy resin 26 to be connected and joined by the steel bar 40 A structure connected to the upper flange joined by a reinforced concrete shear indications synthesis pocket portion 24 is formed for connecting reinforcement (42) and non-shrink mortar (28) or the epoxy resin 26.

The connection structure of the upper flange reinforcing concrete structure of the steel girder according to the present invention having the above-described structure can effectively connect and bond the upper flange reinforcing precast concrete concrete structure 12 in the throttling direction.

In addition, the steel formwork structure for manufacturing the precast upper flange reinforcing concrete case is divided into a straight shape and a curved shape, and both the straight and curved shear-forming pocket portions are formed. In the case of the curved shape, the steel formwork 35, A filler 36 having an angle varying in cross section is inserted to produce a curved upper flange reinforcing concrete structure 12b.

[Concrete method construction method 1]

FIGS. 7A to 13C are process diagrams 1 and 2 showing a process of installing an upper flange reinforcing concrete in an almost upper flange according to the present invention.

As shown in these drawings, a method of constructing a steel girder according to the present invention, in which a reinforcing concrete is combined with an upper flange of a steel girder according to the present invention, includes the steps of (1) fabricating a steel girder 10 and a concrete reinforcing concrete S 1); (S 2) of mounting the steel girder (10) to the alternating (14) and bridge (16); A step (S 3) of connecting the upper flange reinforcing concrete structures (12) to each other after connecting the upper flange reinforcing concrete structures (12) to the upper flange (18) of the steel girder (10); The front and rear portions and left and right portions of the bottom surface where the upper flange 18 of the steel girder 10 is interfaced with the upper flange reinforcing concrete 12 mounted on the upper flange 18 of the steel girder 10, Epoxy resin 26 is injected into the upper flange reinforcing concrete front shear synthetic pocket portion 24 having the shear connection member 22 and the upper flange reinforcing concrete member 12 and the steel girder 10 (S 4); The shrinkage mortar 28 is injected into the upper flange reinforcing concrete front shear composite pocket portion 24 having the shear connection member 22 on the upper flange 18 of the steel girder 10 to form the upper flange reinforcing concrete 12) and the upper flange (18) of the steel girder (10); The mortar 30 is installed on the upper surface of the upper flange reinforcement concrete 12 attached to the upper flange 18 of the steel girder 10 and then the slab reinforcement 32 is inserted, (S6); And disassembling the barrier wall form 30 (S7).

That is, the steel girder construction method in which the reinforcement concrete is combined with the upper flange of the steel girder according to the present invention is characterized in that after the steel girder 10 is mounted on the pivot 14 and pier 16, A rectangular or shaped upper flange reinforcing concrete structure 12 is prefabricated and installed on the flange 18 to be combined with the upper flange 18 of the steel girder 10 and thereafter the slab concrete 34 is cast and / Or a rectangular or shaped upper flange reinforcing concrete structure 12 is prefabricated and installed on the upper flange 18 of the steel girder 10 at the field assembly site of the steel girder 10 to form the steel girder 10 And the steel girder 10 is placed on the pivot 14 and the pier 16 in order to cast the slab concrete 34.

The method of constructing a steel girder according to the present invention in which a reinforcing concrete member is combined with an upper flange of a steel girder according to the present invention is characterized in that a rectangle (not shown) reinforcing only the upper flange 18 is provided on the upper flange 18 of the steel girder 10 Or the upper flange reinforcing concrete formations 12 of the formulations are prepared in advance by precasting and the upper flange reinforcing concrete structures 12 are fixed to the upper flanges 18 of the steel girder 10 The upper flange reinforcement concrete 12 made of precast is inserted into the upper flange 18 of the steel girder 10 by placing and curing the slab concrete 34, And then putting the slab concrete 34 on the alternation 14 and the pier 16 to pour and cure the slab concrete 34. [

The load of the uncured slab concrete 34 is received by the upper flange 18 of the steel girder 10 in which the upper flange reinforcing concrete 12 is combined so that the upper flange 18 Can be absorbed by the upper flange reinforcing concrete member 12 to reduce the cross section of the upper flange 18 of the steel girder 10. [

[Concrete Case Construction Method 2]

FIGS. 14A to 20C are process diagrams 2 and 3 showing a process of installing an upper flange reinforcing concrete on an almost upper flange according to the present invention.

As shown in these drawings, a method of constructing a steel girder according to the present invention, in which a reinforcing concrete is combined with an upper flange of a steel girder according to the present invention, includes the steps of (1) fabricating a steel girder 10 and a concrete reinforcing concrete S 1); A step (S 2) of connecting the upper flange reinforcing concrete structures (12) to each other after connecting the upper flange reinforcing concrete structures (12) to the upper flange (18) of the steel girder (10); The front and rear portions and left and right portions of the bottom surface where the upper flange 18 of the steel girder 10 is interfaced with the upper flange reinforcing concrete 12 mounted on the upper flange 18 of the steel girder 10, Epoxy resin 26 is injected into the upper flange reinforcing concrete front shear synthetic pocket portion 24 having the shear connection member 22 and the upper flange reinforcing concrete member 12 and the steel girder 10 (S 3); Shrinkable mortar 28 is injected into the upper flange reinforcing shear composite pocket portion 24 having the shear connection member 22 on the upper flange 18 of the steel girder 10 to form the upper flange reinforcing concrete member 12, (S 4) of an upper flange (18) of the steel girder (10); (S 5) of placing the composite girder (10) having the composite upper flange reinforcing concrete (12) on the bridge (14) and bridge bridge (16); After the barrier wall formwork 30 is installed on the upper face of the upper flange reinforcing concrete wall 12 which is attached to the upper flange 18 of the steel girder 10 and the slab reinforcement 32 (S6) of placing and curing the slab concrete (34); And disassembling the barrier wall form 30 (S7).

That is, in the steel girder construction method in which the reinforcing concrete member is combined with the upper flange of the steel girder according to the present invention, after the steel girder 10 is mounted on the pivot 14 and pier 16, A rectangular or shaped upper flange reinforcing concrete structure 12 is precastly manufactured and installed in the upper flange 18 of the steel girder 10 and then synthesized with the upper flange 18 of the steel girder 10 and then the slab concrete 34 is cast and cured Or a rectangular or shaped upper flange reinforcing concrete structure 12 is precastly manufactured and installed in the upper flange 18 of the steel girder 10 at the field assembly site of the steel girder 10 to form the steel girder 10, And then the slab concrete 34 is poured by placing the steel girder 10 on the pivot 14 and the pier 16 in the same manner as in the first embodiment.

The method of constructing a steel girder according to the present invention in which a reinforcing concrete member is combined with an upper flange of a steel girder according to the present invention is characterized in that a rectangle (not shown) reinforcing only the upper flange 18 is provided on the upper flange 18 of the steel girder 10 The upper flange reinforcement concrete 12 is preliminarily manufactured by precast casting and the upper flange reinforcing concrete structure 12 is attached to the upper flange 18 of the steel girder 10 after the steel girder 10 is mounted. The upper flange reinforcement concrete 12 made of precast is inserted into the upper flange 18 of the steel girder 10 and the lower flange 18 of the steel girder 10, And then putting the slab concrete 34 on the alternation 14 and the pier 16 to pour and cure the slab concrete 34. [

In this case, since the upper flange 18 of the steel girder 10 in which the upper flange reinforcing concrete 12 is combined receives the load of the uncured slab concrete 34 when the slab concrete 34 is laid, 18 can be absorbed by the upper flange reinforcing concrete member 12 to reduce the cross section of the upper flange 18 of the steel girder 10.

[Deck plate combined concrete]

21A is a perspective view showing a concrete structure for an upper flange reinforcement for use as a deck plate according to the present invention, FIG. 21B is a sectional view showing a concrete structure for reinforcing an upper flange serving as a deck plate according to the present invention, 22A is a perspective view showing a curtain-type concrete concrete frame for reinforcing an upper flange serving as a deck plate according to the present invention, FIG. 22B is a perspective view showing a concrete concrete frame for reinforcing an upper flange, FIG. 22C is a perspective view showing a curtain-type concrete concrete formwork for reinforcing an upper flange serving as a deck plate according to the present invention, and FIG. 23A is a perspective view showing a curved concrete concrete frame for reinforcing an upper flange, According to the invention, an upper flange reinforcing cone Fig. 24A is a perspective view showing a deck plate of the upper flange of the steel girder according to the present invention, Fig. 23B is a sectional view showing an embodiment of the upper flange reinforcing concrete structure serving as a deck plate according to the present invention, FIG. 24B is a perspective view showing a state where both ends of the combined upper flange reinforcing concrete are coated with epoxy resin, FIG. 24B is a perspective view showing a state in which both ends of a concrete frame for reinforcing upper flange serving as a deck plate are coated with an epoxy resin on an upper flange of a steel girder according to the present invention Fig. 25A is a perspective view showing a state in which a steel bar is inserted into a top flange of a steel girder according to the present invention by forming a connecting hole at both ends of an upper flange reinforcing concrete structure serving as a deck plate, The upper flange of the steel girder according to the invention is also used as a deck plate. 26A is a cross-sectional view showing a state in which a steel bar is inserted into both ends of a concrete concrete structure for use in the present invention. Fig. 26A is a cross- And FIG. 26B is a sectional view showing a state in which a connection connecting pocket portion and a connecting reinforcing bar are formed at both ends of an upper flange reinforcing concrete structure serving as a deck plate and an upper flange of a steel girder according to the present invention.

As shown in these drawings, the upper flange reinforcing concrete 44 combined with the deck plate according to the present invention includes a deck plate portion provided on the upper flange 18 of the steel girder 10 and a rectangular flange- The upper deck plate is combined with the upper deck plate and the upper flange reinforcing concrete (44). The unit deck plate and the upper flange reinforcing concrete are constructed in a precast structure with a certain length, and the upper flange reinforcing concrete The upper flange 18 of the steel girder 10 and the upper flange reinforcing concrete 44 combined with the deck plate are joined together by the shrink-proof mortar 28 at regular intervals in the direction of the throttle axle, The front sheave composite pocket portion 46 is formed, and the shear connection member 22 is formed on the upper surface The upper flange reinforcing concrete connection port 38 is formed on the vertical plane and is connected to the upper flange reinforcing concrete deck plate by a steel bar 40, Sheath composite pocket portion 46 is formed and connected to the connection reinforcing bar 42 by a non-shrinkable mortar 28 or an epoxy resin 26. [

According to the present invention constructed as described above, the connection structure of the upper flange reinforcing concrete deck together with the deck plate can effectively connect and connect the upper flange reinforcing precast concrete concrete 44 serving as the deck plate in the throttling direction

In addition, the steel formwork structure for manufacturing the above-described upper flange reinforcing precast concrete structure 44 for both the deck plate and the upper flange is divided into a straight shape and a curved shape. In the case of a curved shape, A curved concrete structure is formed by inserting a filler (36) having an angle varying in cross section at a connection joint portion of the formwork (35).

[Method for constructing concrete deck combined with deck plate 1]

FIGS. 27A to 33C are process diagrams 1 and 2, respectively, showing a process of installing an upper flange reinforcing concrete deck plate and a concrete upper flange in a steel material according to the present invention.

As shown in these drawings, a steel girder construction method in which a reinforcement concrete is combined with an upper flange of a steel girder according to the present invention is characterized in that the upper flange of the steel girder is combined with the upper flange reinforcing concrete, (S 1) of fabricating a steel girder (10) and an upper flange reinforcing concrete (44) serving also as a deck plate; (S 2) of mounting the steel girder (10) on the alternating (14), pierce (16); A step of mounting an upper flange reinforcing concrete 44 serving also as a deck plate to the upper flange 18 of the steel girder 10 and then joining the upper flange reinforcing concrete 44 to the deck plate S 3); The upper flange reinforcing concrete 44 combined with the deck plate and the upper flange 18 of the steel girder 10 are fixed to the upper and lower sides of the bottom surface The epoxy resin 26 is injected into the upper flange reinforcing concrete front shear synthetic pocket portion 46 serving as a deck plate having the shear connection member 22 with the resin sealing agent 20 to reinforce the upper flange (S4) of joining the concrete member (42) and the upper flange (18) of the steel girder (10); Shrinkable mortar 28 is injected into the upper flange reinforcing concrete front shear composite pocket portion 46 serving as a deck plate having the shear connection member 22 in the upper flange 18 of the steel girder 10, (S5) of combining the upper flange reinforcing concrete (44) and the upper flange (18) of the steel girder (10); The slab reinforcement 32 is placed on the upper surface of the upper flange reinforcing concrete 44 serving as a deck plate combined with the upper flange 18 of the steel girder 10 so as to form the barrier wall form 30, (S6) of placing and curing the slab concrete (34); And disassembling the barrier wall form 30 (S7).

That is, in the method of constructing the steel girder according to the present invention in which the reinforcing concrete is combined with the upper flange of the steel girder, the deck plate and the upper flange reinforcing concrete, And the upper flange 18 of the steel girder 10 is provided with the upper flange reinforcing concrete which also serves as the deck plate And the slab concrete 34 is installed and cured after it is combined with the upper flange 18 of the steel girder 10. [

In this case, when the slab concrete 34 is poured, the load of the uncured slab concrete 34 is received by the upper flange 18 of the steel girder 10 combined with the deck plate upper flange reinforcing concrete 44 The stress of the upper flange 18 can be absorbed by the upper flange reinforcing concrete 44 serving as a deck plate to reduce the section of the upper flange 18 of the steel girder 10, The horizontal bracing 48 can be disassembled and used repeatedly to increase the economic efficiency.

In addition, since the molding process is omitted, the construction period can be shortened and the safety due to the high-altitude operation can be increased.

[Method of constructing concrete deck combined with deck plate 2]

FIGS. 34A to 40C are process diagrams 2 and 3 showing a process of installing an upper flange reinforcing concrete deck plate serving as a deck plate in an almost upper flange according to the present invention.

As shown in these drawings, a steel girder construction method in which a reinforcement concrete is combined with an upper flange of a steel girder according to the present invention is characterized in that the upper flange of the steel girder is combined with the upper flange reinforcing concrete, (S 1) of fabricating a steel girder (10) and an upper flange reinforcing concrete (44) serving also as a deck plate; A step of mounting an upper flange reinforcing concrete 44 serving also as a deck plate to the upper flange 18 of the steel girder 10 and then joining the upper flange reinforcing concrete 44 to the deck plate S 2); The upper flange reinforcing concrete 44 combined with the deck plate and the upper flange 18 of the steel girder 10 are fixed to the upper and lower sides of the bottom surface An epoxy resin 26 is injected into the upper flange reinforcing concrete shear front composite pocket portion 46 serving as a deck plate having a shear connection member 22 and sealing with the resin sealing agent 20 to form a deck plate upper flange reinforcing concrete (S 3) such that the upper flange (44) of the steel girder (10) is joined to the upper flange (18) of the steel girder (10); Shrinkable mortar 28 is injected into the upper-flange-reinforced shear-synthetic pocket portion 46 serving as a deck plate and having the shear connection member 22 in the upper flange 18 of the steel girder 10 to serve as a deck plate- (S 4) of combining the concrete for concrete (44) with the upper flange (18) of the steel girder (10); (S 5) of placing the composite girder (10) having the composite deck plate upper flange reinforcing concrete (44) attached thereto on the bridge (14) and the bridge bridge (16); The slab reinforcement 32 is placed on the upper surface of the upper flange reinforcing concrete 44 serving as a deck plate combined with the upper flange 18 of the steel girder 10 so as to form the barrier wall form 30, (S6) of placing and curing the slab concrete (34); And disassembling the barrier wall form 30 (S7).

That is, in the method of constructing the steel girder according to the present invention in which the reinforcing concrete is combined with the upper flange of the steel girder, the deck plate and the upper flange reinforcing concrete, The steel girder 10 is prefabricated and installed on the upper flange 18 of the steel girder 10 at the field assembly site of the steel girder 10 to be combined with the upper flange 18 of the steel girder 10, The slab concrete 34 is placed by alternately mounting the slabs 10 on the bridge 14 and the bridge 16.

In this case, when the slab concrete 34 is poured, the load of the uncured slab concrete 34 is received by the upper flange 18 of the steel girder 10 combined with the deck plate upper flange reinforcing concrete 44 The stress of the upper flange 18 can be absorbed by the upper flange reinforcing concrete 44 serving as a deck plate to reduce the section of the upper flange 18 of the steel girder 10, The horizontal bracing 48 can be disassembled and used repeatedly to increase the economic efficiency.

In addition, since the molding process is omitted, the construction period can be shortened and the safety due to the complicated work can be increased.

The steel girder construction method in which the reinforcement concrete is combined with the upper flange of the steel girder according to the present invention can be widely applied to steel U girder, steel I girder, steel truss girder and the like.

10: steel girder 12: upper flange reinforcing concrete
12a: Straight upper flange reinforcing concrete
12b: Curved upper flange reinforcing concrete
14: Alternation 16: Pier
18: upper flange 20: resin sealing agent
22: Shear connector
24: Upper flange reinforcing concrete shearing composite pocket part
26: Epoxy resin 28: Non-shrinkable mortar
30: mold for barrier wall 32: slab reinforcement
34: slab concrete 35: steel formwork
36: filler
38: Concrete connection flange for upper flange reinforcement
40: steel bar 41: shear reinforcement
42: Connecting bars
44: Deck plate combined with upper flange reinforcing concrete
46: Deck plate combined upper flange reinforcing concrete shearing composite pocket part
48: Horizontal bracing

Claims (8)

A method for improving the performance of a steel girder by synthesizing an upper flange reinforcing concrete to an upper flange of a steel girder,
(S1) of fabricating the steel girder (10) and the upper flange reinforcing concrete (12);
(S 2) of mounting the steel girder (10) to the alternating (14) and bridge (16);
A step (S 3) of connecting the upper flange reinforcing concrete structures (12) to each other after connecting the upper flange reinforcing concrete structures (12) to the upper flange (18) of the steel girder (10);
The front and rear portions and left and right portions of the bottom surface where the upper flange 18 of the steel girder 10 is interfaced with the upper flange reinforcing concrete 12 mounted on the upper flange 18 of the steel girder 10, Epoxy resin 26 is injected into the upper flange reinforcing concrete front shear synthetic pocket portion 24 having the shear connection member 22 and the upper flange reinforcing concrete member 12 and the steel girder 10 (S 4) joining the upper flange (18) of the upper flange (18);
The shrinkage mortar 28 is injected into the upper flange reinforcing concrete front shear composite pocket portion 24 having the shear connection member 22 on the upper flange 18 of the steel girder 10 to form the upper flange reinforcing concrete 12) and the upper flange (18) of the steel girder (10);
After the barrier wall formwork 30 is installed on the upper surface of the upper flange reinforcing concrete structure 12 attached to the upper flange 18 of the steel girder 10 and then the slab reinforcing bar 32 is placed and the slab concrete 34 (S6);
And a step (S7) of disassembling the barrier wall form (30). The method of claim 1, wherein the upper flange is formed of a concrete structure for reinforcing an upper flange. The method according to claim 1,
Wherein step (S 3) to step (S 5) are first carried out at the site assembly site, and then the steel girder (10) is placed on the alternating (14) and pierce (16) 10) is combined with an upper flange (18) of an upper flange (20). A method for improving the performance of a steel girder by synthesizing an upper flange reinforcing concrete to an upper flange of a steel girder,
(S1) of fabricating a steel girder (10) and an upper flange reinforcing concrete structure (44) serving also as a deck plate;
(S 2) of mounting the steel girder (10) to the alternating (14) and bridge (16);
A step of mounting an upper flange reinforcing concrete 44 serving also as a deck plate to the upper flange 18 of the steel girder 10 and then joining the upper flange reinforcing concrete 44 to the deck plate S 3);
The upper flange reinforcing concrete 44 combined with the deck plate and the upper flange 18 of the steel girder 10 are fixed to the upper and lower sides of the bottom surface The epoxy resin 26 is injected into the upper flange reinforcing concrete front shear synthetic pocket portion 46 serving as a deck plate having the shear connection member 22 with the resin sealing agent 20 to reinforce the upper flange (S4) of joining the concrete member (42) and the upper flange (18) of the steel girder (10); Shrinkable mortar 28 is injected into the upper flange reinforcing concrete front shear composite pocket portion 46 serving as a deck plate having the shear connection member 22 in the upper flange 18 of the steel girder 10, (S5) of combining the upper flange reinforcing concrete (44) and the upper flange (18) of the steel girder (10);
The slab reinforcement 32 is placed on the upper surface of the upper flange reinforcing concrete 44 serving as a deck plate combined with the upper flange 18 of the steel girder 10 so as to form the barrier wall form 30, (S6) of placing and curing the slab concrete (34);
And a step (S7) of disassembling the barrier wall form (30). The method of claim 1, wherein the upper flange (18) is formed by combining an upper flange reinforcing concrete member. The method of claim 3,
Wherein the step (S 3) to the step (S 5) are first carried out at the site assembly site and then the steel girder (10) is placed on the alternating (14) and pierce (16) A method of constructing a steel girder by combining an upper flange 18 and an upper flange reinforcing concrete. 5. The method according to any one of claims 1 to 4,
The upper flange reinforcing concrete structure 12 is composed of a straight upper flange reinforcing concrete 12a or a curved upper flange reinforcing concrete 12b and the curved upper flange reinforcing concrete concrete 12b A filler 36 having an angle varying in cross section is inserted into the connecting joint portion of the steel formwork 35 to construct a curved steel formwork 35 so as to produce a curved upper flange reinforcing concrete form 12b A method of constructing a steel girder by combining an upper flange reinforcing concrete with an upper flange of a steel girder. 5. The method according to any one of claims 1 to 4,
The upper flange reinforcing concrete (12) is joined to the upper flange reinforcing concrete (12) by epoxy resin (26), and the upper flange reinforcing concrete Construction method of composite steel girder. 5. The method according to any one of claims 1 to 4,
The connecting connection between the upper flange reinforcing concrete structures 12 is formed by forming an upper flange reinforcing concrete connection flange 38 on the vertical plane at both ends of the upper flange reinforcing concrete flange 12, 38) of a steel girder (30) by inserting a steel bar (40) into the upper flange of the steel girder, characterized in that an upper flange reinforcing concrete is combined with the upper flange of the steel girder. 5. The method according to any one of claims 1 to 4,
The connection between the upper flange reinforcing concrete structures (12) is such that an upper flange reinforcing concrete front shear synthesis pocket portion (24) is formed at both ends of the upper flange reinforcing concrete sheer (12), and the upper flange reinforcing concrete pockets Wherein the upper flange of the steel girder is joined to the portion (24) of the steel girder by connecting reinforcing bars (42) and non-shrinking mortar (28).
KR20130069057A 2013-06-17 2013-06-17 On the upper flange of the steel girder reinforced concrete cation and steel girder construction method to synthesize KR20140146403A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180120495A (en) * 2017-04-27 2018-11-06 목포대학교산학협력단 Steel Built Up Beam And Column-Beam Joint Construction Method Using Thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20180120495A (en) * 2017-04-27 2018-11-06 목포대학교산학협력단 Steel Built Up Beam And Column-Beam Joint Construction Method Using Thereof

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