KR101538516B1 - A box girder using steel and foam concrete insertion, and method for construction bridge using the same - Google Patents

Abstract

The present invention relates to a composite girder having a box section using a steel material and an aqueous soft foam embedding material and a method of constructing a bridge structure including the girder and the girder while reducing the weight of the girder, By securing the structural safety and eliminating the whip from the corner of the wall and the girder, it is possible to secure sufficient space by removing the dead space by reinforcing the strength of the right side of the ridge, and fixing the girder and the wall with bolts So that they can assemble firmly beforehand to improve the assemblability.
The composite girder of a box section using a steel material and an aqueous soft foam embedding material according to the present invention comprises a girder beam 11 made of a steel material and having a rectangular structure with an embedded material receiving portion; An aqueous soft foam embedding material 13 which is three-dimensional in shape of a non-concrete material which is lighter in weight than concrete and is accommodated in the embedding material receiving portion of the girder beam; A concrete part 12 formed by placing a concrete in the form of a box on the periphery of the girder beam and the aqueous soft foam embedding material; The upper and lower torsion beams are arranged symmetrically with the central part of the concrete part being lower than the longitudinal sides of the concrete part with a height difference therebetween. Both longitudinal sides are connected to the upper part of the lower structure of the bridge structure, And the girder beam is composed of both side sections in the longitudinal direction of a cross section having an "I" shape by the upper and lower horizontal sections 11a, 11b and the vertical section 11c and a " The embedding material receiving portion is formed only in a central portion of the cross section of the " ㅗ ", so that the aqueous soft foam embedding material is installed only in the central portion, and semicircular The hinge connection portion 17 of the groove is formed so that the hinge connection portions are coupled to each other, The concrete part is fixed on the upper surface of the support beam 31 protruding from the upper part of the water and is fixed to the fixed plate 33 having a larger cross sectional area than the support beam 31 and the stud plate 34 at the lower part, Wherein the hinge connection part of the girder beam is projected without exposing the water soft flexible foam material after the embedding material is fixed to the girder beam or a reinforcing bar disposed around the girder beam, The lower side tensional material is wired to the lower side of the lower horizontal portion of the girder beam while the lower side tensional material is wired below the lower horizontal portion of the girder beam.
A method of constructing a bridge structure including a composite girder having a box section using a steel material and an aqueous soft foam embedding material according to the present invention is characterized in that a lower structure including a foundation part and a wall part is constructed at a distance from each other, A first step of constructing so as to protrude the beam 31; A composite section girder 10 having a box section is manufactured by using a steel material and an aqueous soft foam filler material between the lower structures constructed through the first step, A second step of assembling the beam 11 to the support beam 31 of the wall portion of the connecting portion 17 of the beam 11; And the second step includes a third step of constructing the upper structure of the rear corner and the slab, and the second step is a step of constructing the girder beam 11 of the box section synthetic girder using the steel material and the aqueous soft foam embedding material A hinge connection part 17 formed by a semicircular groove is fitted into a hinge connection part 32 formed by a semicircular projection on the support beam of the wall part and a hinge connection part 32 having a cross sectional area larger than that of the support beam 31 is formed on the upper surface of the support beam 31 And fixing the fixing plate 33 on which the stud plate 34 is formed at the lower part to connect the fixing plate 33 to the lower horizontal part 11b of the girder 10 to construct.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composite girder of a box section using a steel material and an aqueous soft foam filler and a method of constructing a bridge structure including the composite girder,

More particularly, the present invention relates to a composite girder bridge and a ramen bridge construction method. More particularly, the present invention relates to a composite girder bridge and a ramen bridge construction method. More particularly, the present invention relates to a composite girder bridge and a ramen bridge construction method, To a box section synthetic girder using a foam filling material and a method of constructing a bridge structure including the same.

Bridges are constructed to cross rivers and roads, such as girder bridges where girders and slabs are installed on bridge piers, and ramen bridge where walls and slabs are integrally connected.

Fig. 1 shows an example of a conventional ramen bridge. The ramen bridge 1 includes a base portion 2 supported on the ground, a wall portion 3 formed on the base portion 2, As shown in Fig.

The foundation part 2, the wall part 3 and the slab 4 are made of, for example, a reinforced concrete structure using a mold.

The ramen bridge 1 supports the self weight of the slab 4 and the load acting on the slab 4, and a girder for transmitting the received load to the wall 2 is also applied.

The girder 5 has been used for a long period of time in a reinforced concrete or prestressed concrete structure.

2 is an illustration showing the connection structure between the girder 5 and the wall 3. The girder 5 has an I-type beam 5a so that the end of the beam 5a is exposed at the periphery of the beam 5a. And an end portion of the beam 5a of the girder 5 is fixed to the support beam 3a protruding to the upper portion of the wall 3 by means of bolting and welding or the like, So that the girder 5 and the wall 3 are connected to each other.

As shown in Fig. 3, the girder 5 is in the form of a box having the same cross section as a whole.

Recently, the necessity of the large space structure has been emerged. However, as the span of the span increases, the section of the member also becomes thicker and the weight of the self weight becomes heavier than the load which is loaded, and more than half of the stiffener is laid to prevent collapse of the self weight.

As a method for reducing the weight, there is a method using a cross-sectional girder.

Fig. 4 is a cross-sectional view of the sectioned girder 5, showing an I-shaped section having a box-shaped section and a central section having an indentation, which is connected to the wall and receives a large moment.

Such a cross-sectional girder has a problem that the work is very troublesome because the formwork must be installed to match the change of the cross-section. In addition, there is a problem that the outer shape is varied due to the cross section, and in particular, as the size of the girder becomes smaller, the structure may feel weak.

In the right corners of the ramen bridge 1, a spiral portion 6 (shown in Fig. 1) is formed for reinforcement of the right-angled portion. When designing the ramen bridge 1, it is stipulated from the flood level to the bottom surface of the slab 3 to secure the elevation above a predetermined height. At this time, the spiral portion 6 is provided at the bottom of the slab 3. [ The bottom part of the spiral part 6 is inevitably deformed to be a standard of the sparging of the spiral part 6, so that a thread space corresponding to the height of the spiral part 6 is generated. As a result, more material is used , There is a problem that the burden of the adjacent roads due to the increase in the plan height is increased and the incidental costs are increased.

In addition, since the beam 5a of the girder 5 and the support beam 3a of the wall body 2 can not be prevented from moving between the beams 5a and 3a before welding, the welding defect occurs, It takes a long time to match the bolt holes, and the bolt holes are not coincident with each other, so that the installation time of the girders 5 takes a long time and a safety accident occurs.

Patent No. 10-0770574 Patent No. 10-1395913

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to provide a steel material and a water soft flexible foam material which can minimize the deformation due to its own weight and secure structural safety while reducing the weight of the girder, And a method of constructing a bridge structure including the composite girder.

Also, it is necessary to reinforce the appropriate steel considering the sectional strength of the girder end and the center part, but to reinforce the cross section differently according to the position where the tensile force is applied, thereby securing economical and structural safety.

Another object of the present invention is to secure a sufficient space by eliminating the dead space through a sufficient strength reinforcement of the right-angled portion while removing the hook portion from the portion connecting the wall and the slab.

Another object of the present invention is to improve the assemblability by firmly assembling the girder and the wall before welding or bolting them.

The composite girder of a box section using a steel material and an aqueous soft foam embedding material according to the present invention is a girder beam having a rectangular shape with a filler receiving part and made of a steel material; A water soft flexible foam filler which is three-dimensional in shape of a non-concrete material that is lighter in weight than concrete and is accommodated in the filler receiving portion of the girder beam; The girder beam and the water soft flexible foam embedding material are provided with a concrete portion having a box-like outer appearance poured into the concrete. Both sides in the longitudinal direction are supported or connected to the upper portion of the lower structure of the bridge structure, And is constructed.

A method of constructing a bridge structure including a composite girder having a box section using a steel material and an aqueous soft foam embedding material according to the present invention is characterized in that a lower structure including a foundation part and a wall part is constructed at a distance from each other, A first step of constructing to project the beam; The composite girder of the box section using the steel material and the water soft flexible foam embedding material is constructed between the substructures constructed through the first step and the girder beam length formed in the box section synthetic girder using the steel material and the aqueous soft foam embedding material A second step of assembling a connection part protruding from a concrete part on both sides in a direction to a support beam of the wall part and assembling it; And the second step includes a third step of constructing the upper structure of the rear part and the slab, thereby constructing the ramen bridge.

A method of constructing a bridge structure including a composite girder having a box section using a steel material and an aqueous soft foam embedding material according to the present invention comprises a first step of constructing a foundation part at a certain distance from each other; A second step of constructing an alternate portion by assembling the pre-cast concrete blocks or placing a spot on the base portion constructed through the first step; A third step of installing a bridge support on the alternation part constructed in the second step and placing both sides of the composite endless box section using the steel material and the water soft flexible foam material on the bridge support in the longitudinal direction; And a fourth step of constructing a girder bridge on the girder constructed through the third step.

According to the composite girder of the box section using the steel material and the water soft flexible foam material according to the present invention and the method of constructing the bridge structure including the same, it is possible to provide a waterproof flexible foam which is light in weight and free to form in the inside of the girder, The overall weight of the slab can be minimized by minimizing the weight of the slab by minimizing the deformation of the slab due to its own weight and load, and it is possible to construct a composite girder bridge and a ramen bridge with high safety and durability.

Since the corner portion between the wall and the girder is reinforced by the reinforcement means of the right corner portion, the ceiling portion is not formed, so that it is possible to secure a sufficient height and thus the height of the slab can be lowered so that the construction cost can be reduced and the air can be shortened have.

Also, the girder and the wall are assembled by the hinge part to improve the assemblability and reinforce the rugged part, so that it is possible to construct the structurally very stable composite girder bridge and the ramen bridge.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure of a conventional composite type girder bridge and a ramen bridge construction method.
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a composite girder bridging method and a bridging bridge construction method.
3 is a sectional view of a girder applied to a conventional composite type girder bridge and a ramen bridge construction method.
4 is a cross-sectional view of a cross-sectional girder applied to a conventional composite type girder bridge and a ramen bridge construction method.
5 is a partial cross-sectional perspective view of a box section composite girder using a steel material and an aqueous soft foam embedding material according to embodiment 1 of the present invention.
6 is an exploded perspective view of a girder beam and an aqueous soft foam embedding material applied to a box section composite girder using a steel material and an aqueous soft foam embedding material according to embodiment 1 of the present invention.
7 is a front view of a box section composite girder using a steel material and an aqueous soft foam embedding material according to embodiment 1 of the present invention.
8 and 9 are cross-sectional views of a fulcrum portion and a center portion of a composite endless box section using a steel material and an aqueous soft foam filler according to Embodiment 1 of the present invention, respectively.
10 is an exploded perspective view of a girder beam and a filler applied to a box section composite girder using a steel material and an aqueous soft foam filler according to a second embodiment of the present invention.
11 and 12 are cross-sectional views of a fulcrum portion and a center portion of a composite endless box section using a steel material and an aqueous soft foam embedding material according to a second embodiment of the present invention, respectively.
13 is a perspective view of a box section composite girder using a steel material and an aqueous soft foam embedding material according to a third embodiment of the present invention.
FIG. 14 is a front view of a composite state of a composite section of a box section using a steel material and an aqueous soft foam embedding material according to a fourth embodiment of the present invention. FIG.
15 is an assembling process of a box section composite girder using a steel material and an aqueous soft foam embedding material according to a fourth embodiment of the present invention.
16 and 17 are a front view and a side view of a girder bridge including a box section composite girder using a steel material and an aqueous soft foam embedding material according to the present invention.
18 and 19 are a front view and a side view of a ramen bridge including a box section composite girder using a steel material and an aqueous soft foam deposit according to the present invention.
The present invention is directed to a hinge connection of a ramen bridge including a composite girder having a box section using a steel material and an aqueous soft foam embedding material according to the present invention.
FIG. 21 is a front view showing a rally bridge of a ramen bridge including a composite section of a box section using a steel material and an aqueous soft foam embedding material according to the present invention. FIG.

≪ Example 1 >

As shown in Figs. 5 to 9, the box section synthetic girder 10 using the steel material and the water-based flexible foam embedding material according to the present embodiment includes a girder beam 11 made of a steel material, And a water soft flexible foam material 13 made of a non-concrete material and embedded in the concrete part 12 to reduce the weight of the girder.

The girder beam 11 is provided with an embedded material receiving portion and is constituted by an upper end portion 11a and a lower end portion 11b of the vertical portion 11c. Quot; I "cross section with both sides in the longitudinal direction thereof, and a central portion thereof is a" cross section " in which a part of the vertical portion 11c is cut and the upper horizontal portion 11a is not present.

Such a cross-section is characterized in that the central portion which does not require large rigidity is lightened while reinforcing a portion requiring a large rigidity (right portion) in the structure.

That is, as shown in Fig. 9, the embedding material receiving portion is formed only in the central portion of the cross-section, and is not formed on both sides in the longitudinal direction which is the cross-section of the "I "

The embedding material receiving portion is not limited to the shapes shown in Figs. 6 and 7 (the shapes are inclined upward toward both sides in the longitudinal direction), and various forms are possible.

It is preferable that the concrete part 12 is formed as an outer appearance of a rectangular box shape by the concrete pouring around the girder beam 11 and is made of a reinforced concrete (combination of longitudinal reinforcing bars and band reinforcing bars) concrete.

Since the concrete part 12 is formed in the shape of a box even when the water soft flexible foam 13 is applied, the girder 10 is kept in a box shape in all parts, and only a single type of formwork is used, Eliminate vulnerability and visual anxiety.

The girder 10 of the present invention can be applied to bridge structures of both girder bridges and raman bridges. When used as a girder of a ramen bridges, a portion of both sides of the girder beam 11 in the longitudinal direction is used as a connection, The concrete portion 12 is not formed as a whole.

The water soft flexible foam material 13 is applied to achieve the object of reducing the overall weight while maintaining the outer shape of the girder 10 in the form of a box. The water soft flexible foam material 13 is applied to the girder beam 11 so as not to move when the concrete of the concrete part 12 is pushed. Or reinforcing bars or the like.

The girder 10 of the present invention is applied with an upper tension member 14 and a lower tension member 15 to apply a force against the compressive force applied from the upper portion to the central portion.

The upper tension member 14 and the lower tension member 16 are preferably formed as a pair of left and right symmetrical members. As shown in FIGS. 8 and 9, the center portion of the upper tension member 14 and the lower tension member 16 are wider than both sides in the longitudinal direction, And particularly the lower tension member 15 is wired to the center of the lower portion of the girder beam 11 to apply the force to the girder beam 11 and the concrete portion 12 together.

The present invention includes a confirmation window 16 for visually confirming the inside of the girder 10 from the outside of the girder 10 so as to check the concrete filling state of the girder 10 and the presence or absence of cracks in the girder 10 after construction do. One side of the check window 16 is fixed to the bottom of the girder beam 11 and the other side is exposed to the outside in correspondence with the outer circumferential surface of the concrete portion 12 to confirm the inside of the girder 10 from outside the girder 10. [ Can be transparent tube or transparent rod.

≪ Example 2 >

As shown in FIGS. 10 to 12, the box section composite girder 10 using the steel material and the water soft flexible foam filler according to the present embodiment is constructed by a girder beam 11, a concrete portion 12, The girder beam 11 has the same cross section as that of the girder beam 11, that is, the girder beam 11 has the upper and lower horizontal portions (the upper and lower horizontal portions 13, 11a and 11b and the vertical portion 11c are formed as a whole and the aqueous soft foamed material 13 is applied to both sides of the vertical portion 11c (see FIG. 12).

The other configuration is the same as that of the first embodiment, and a detailed description thereof will be omitted.

≪ Example 3 >

As shown in FIG. 13, the box section synthetic girder 10 using the steel material and the water soft flexible foam material according to the present embodiment is constructed such that the concrete portion 12 does not surround the entire girder beam 11, So that it is connected to the lower structure on both sides of the longitudinal direction of the girder beam 11. The structure is suitable for the bridge of the ramen because of easy connection with the lower structure of the ramen bridge.

The connecting portion is preferably a hinge connecting portion 17. And a groove formed in a semicircular section within a lower horizontal portion 11b, which is the bottom of the girder beam 11, so long as it does not protrude to the bottom.

The hinge connection portion 17 having such a structure is formed by assembling a curved plate of a semicircular cross section made by cutting a steel pipe. Of course, the wall body, which is a substructure of the ramen bridge, is formed with a hinge connection in the form of a protrusion coupled to the hinge connection part 17. [

At least one reinforcing plate 17a in a direction orthogonal to the vertical portion 11b is applied between the hinge connecting portion 17 and the upper horizontal portion 11a.

The connection with the ramen bridge will be described in detail in the ramen bridge construction method described below.

<Example 4>

As shown in FIGS. 14 and 15, the box section composite girder 10 using the steel material and the water soft flexible foam material according to the present embodiment is divided into a plurality of segments, preferably three segments.

The divided girder 10 according to the present embodiment is preferably connected to the lower structure while being assembled with the central segment 10-1 and the central segment 10-1 in which the aqueous soft foam embedding material 13 is embedded, The connecting segment 10-2 on both sides of the connecting segment 10-2.

The center segment 10-1 is formed by embedding an aqueous soft foamed material 13 and a girder beam 11-1 in a concrete portion 12-1 and the girder beam 31-1 is disposed on both sides And a part thereof protrudes from the concrete portion 12-1.

The girder beam 11-2 is buried in the concrete section 12-2 so that both sides of the girder beam 11-2 are connected to the center segment 10-1 and the support beam 21 of the lower structure And are projected from the concrete portion 12-2 so as to be connected to each other.

Even if the girder 10 of the split type according to the present embodiment is divided into two or more pieces, a tensile material is applied so as not to cause deformation by self weight and load in each portion.

In the central segment 10-1, a tension member is provided at the lower portion, and in the connecting segment 10-2, a tension member is provided at the upper portion.

As shown in Fig. 15, the girder 10 of the split type according to the present embodiment is completed by the following method.

The center segment 10-1 and the connecting segment 10-2 are arranged in a line and the center segment 10-1 and the connecting segment 10-2 are arranged in the girder beam 11- 1 and 11-2 to the assembly plate 18 supported on both sides of the vertical part of the girder beams 11-1 and 11-2 and the assembly plate 18 and the girder beams 11-1 and 11-2, (Bolts and nuts) that are fastened to the vertical part of the base plate 11-2. Then, the concrete finishing portion 19 is formed by pouring the joint where the assembling means is joined to produce a split type girder 10.

The girder beam 11-1 of the center segment 10-1 of the present embodiment is capable of both the side surface of the first embodiment and the front surface of the second embodiment (the front surface has no change in cross section).

Hereinafter, a method of constructing a bridge structure including a box section synthetic girder using a steel material and an aqueous soft foam embedding material according to the present invention will be described, and a girder bridge and a ramen bridge will be separately described.

1. Construction of girder bridges (see Figs. 16 and 17).

end. Construction of foundation.

The foundation 20 is installed on the ground with a certain distance (stream) from each other, or by using a pile on the ground or underwater.

I. Shift construction.

The alternating section 30 is installed on the foundation section 20 at a predetermined height. The construction of the alternating section 30 can be both on-site installation and assembly by the precast concrete block, and it can be integrated with the foundation 20.

All. Composite Girder Construction of Box Section Using Steel and Water Soft Flex Filler.

A bridge support shoe 40 is provided on the alternating section 30 and a box section synthetic girder 10 is provided on the bridge support 40 by using the steel material and the water soft flexible form filler according to the present invention.

One or more of the girders 10 according to the present invention may be used depending on the width of the slab 50, and FIG. 17 illustrates three girders.

la. Slab construction.

After completion of the construction of the girder 10, a slab 50 (including a wrapping layer and a railing) having a constant width is formed on the girder 10. The slab 50 can be constructed of all slabs such as a deck slab and a concrete slab.

Although the construction of the girder 10 and the construction of the slab 50 are separately described in the present embodiment, the construction of the girder 10 and the slab 50 may be integrally performed and then integrally constructed.

2. Construction of ramen bridges (see Figs. 18 and 19).

end. Construction of substructure.

The base part 20 and the wall part 30 can be installed at the same time by being poured or separated in the field or the base part 20 and the wall part 30 can be constructed through assembling the precast concrete block.

The wall part 30 is a reinforced concrete structure, for example, a reinforced concrete structure which is erected at a predetermined height above the foundation part 20, and a support beam 31 for connection with the girder 10 protrudes upward. The support beam 31 is preferably embedded in the wall 30 to increase the rigidity of the support. It is also possible to install the support beam 31 on the upper surface of the wall 30 with an anchor or the like.

I. Box - section composite girder assembly using steel and aqueous soft foam filler.

20 and 21, a hinge connection portion 32 in the form of a projection is formed on the upper portion of the support beam 31 to be coupled to the hinge connection portion 17 of the girder 10. The hinge connection portion 32 of the wall portion 20 is used with a semi-circular cross section formed by cutting the steel pipe together with the hinge connection portion 17 on the girder 10 side.

A fixing plate 33 having a cross sectional area larger than that of the supporting beam 31 is fixed to the upper surface of the supporting beam 31 by welding or the like in order to prevent the lowering of the binding force due to the narrow cross-

The fixing plate 33 is joined to the lower horizontal portion 11b of the girder 10 by bolting or welding. In addition, at least one stud plate 34 (shown as two in the figure) embedded in the concrete of the right-angled portion can be applied to the bottom portion of the fixing plate 33 for reinforcing the rigidity at the right- The upper end of the stud plate 34 is fixed to the bottom surface of the fixing plate 33 by welding or the like.

A reinforcement plate 35 in a direction orthogonal to the stud plate 34 is applied between the stud plate 34 and the support beam 31 in order to increase the supporting force of the stud plate 34. [ The upper portion of the reinforcing plate 35 is welded to the fixing plate 33 to the right and the studs 34 to the left of the support beam 31 to support the stud plate 34.

The girder 10 is lifted and the hinge connection portions 17 formed on both sides in the longitudinal direction of the girder 10 are fitted and hinged on the hinge connection portion 32 formed on the support beam 31. The hinge connection portions 17 and 32 are formed of a curved cross-section and are slidably and naturally engaged.

Next, the girder beam 11 of the girder 10 and the fixing plate 33 of the wall portion 20 are fixed by bolting or the like.

According to the hinge connection portion having such a structure, before the girder 10 is fixed (welded, bolted or the like) to the wall portion 30, the girder 10 is held by the hinge- (10) is naturally inserted into the bolting and welding positions. In the right-angled portion to which the hinge portion of such a structure is applied, substantially only the post-synthesis load and the vehicle live load are loaded, Also,

In the present invention, a right-angled portion reinforcing means is provided so as to ensure sufficient clearance without damaging cracks or the like even if no spiral portion is formed at the right angled portion.

21, the right-angled portion reinforcing means includes a right-angled reinforcing beam 60 and a right-angled reinforcing beam 60 both of which are connected to the supporting beam 31 of the wall portion 30 and the girder beam 11, And an excavator bracket that is fixed to the beam 60 and forms a corner at a right angle between the wall portion 30 and the girder 10 (here, the girder 10 refers to the girder 10 completed by pouring concrete into the right corner) 61).

The right-angled reinforcing beam 60 can be an I-beam, an H-beam, a d-beam, or the like, and is formed by the support beam 31 of the wall 30 and the girder beam 11 of the girder 10 And both sides in the longitudinal direction are fixed by welding or the like while being inclined to the corner portions.

The camber bracket 61 includes a corner portion 61a made up of a horizontal portion and a vertical portion and a beam fixing portion 61b fixedly connected to the corner portion 61a by being integrally formed or welded and fixed to the right corner reinforcing beam 60 .

The excavator bracket 61 is formed entirely at the corners of both the composite girder bridge and the ramen bridge to prevent cracks or the like at this portion.

delete

All. Construction of superstructure.

After the assembly of the girder 10 and the support beam 31 and the reinforcement of the right-angled portion are completed, a mold is installed on the slab 50 and the right corner, and the upper structure is constructed by placing concrete in the mold. At this time, the form for pouring the right-angled portion may be a commonly used pseudo-form, or may be a permanent type used as a precast concrete panel or steel plate serving also as a function of a form and a reinforcement function.

10: Composite girder with box section using steel and aqueous soft foam filler,
11: girder beam, 12: concrete section
13: Water soft flexible foam filling material, 14: Upper side tension material
15: lower tension, 16: confirmation window
17: hinge connection part, 18: assembly plate
19: concrete finishing part, 20: foundation part
30: alternating part, wall part, 40: bridge support
50: Slab, 60: Rectangular beam
61: a camel bracket, 70: a base bracket
71: Tension Jack,

Claims (11)

A girder beam 11 made of a steel material and having a rectangular shape with a filler receiving portion; An aqueous soft foam embedding material 13 which is three-dimensional in shape of a non-concrete material which is lighter in weight than concrete and is accommodated in the embedding material receiving portion of the girder beam; A concrete part 12 formed by placing a concrete in the form of a box on the periphery of the girder beam and the aqueous soft foam embedding material; The upper and lower torsion beams are arranged symmetrically with the central part of the concrete part being lower than the longitudinal sides of the concrete part with a height difference therebetween. Both longitudinal sides are connected to the upper part of the lower structure of the bridge structure, In addition,
The girder beam is composed of both side sections in the longitudinal direction of a cross section having an " I "shape by the upper and lower horizontal sections 11a and 11b and a vertical section 11c, The receiving portion is formed only in the central portion of the cross section of the " ㅗ &quot;, so that the aqueous soft foam embedding material is installed only in the central portion, and the hinge connecting portion 32 formed in the lower structure in the longitudinal direction, A connecting portion 17 is formed on the upper surface of the support beam 31. The hinge connection portions are coupled to each other and the lower horizontal portion of the support beam 31 protrudes from the upper portion of the lower structure. And fixed to the fixing plate 33 formed with the fixing plate 34,
Wherein the concrete portion is fixed to the girder beam or a reinforcing bar disposed around the girder beam, and then the concrete portion is placed, and the hinge connection portion of the girder beam is projected without exposing the aqueous soft foam embedding material, And,
Wherein the upper side tensional material is wired to the upper side of the lower horizontal portion of the girder beam while the lower side tensional material is wired below the lower horizontal portion of the girder beam. . delete delete [2] The apparatus of claim 1, further comprising a transparent confirmation window which is fixed to the bottom of the girder beam at one side and the inside of the girder beam at the outside corresponding to the outer circumferential surface of the concrete section, Box girder composite girder using foam filler. The method of claim 1, wherein the girder beam comprises a center segment defining an embedment receiving portion into which the aqueous soft foam embedding material is inserted, a lower segment of the ramen bridge assembled to the central segment, And a connecting segment supported by the structure. The composite girder of a box section using a steel material and an aqueous soft foam embedding material. delete delete A first step of constructing a lower structure having a base part and a wall part at a predetermined distance from each other and installing a support beam 31 on the upper part of the wall part;
A box cross-section composite girder (10) is manufactured by using the steel material and the water soft flexible form filler according to claim 1 between the lower structures constructed through the first step, and the box cross-section synthesis using the steel material and the aqueous soft foam filler A second step of assembling the girder beam 11 to the support beam 31 of the wall portion of the connecting portion 17 of the girder,
And the second step includes a third step of constructing the upper structure of the rear corner and the slab,
In the second step, a hinge connection part (17) formed as a semicircular groove in a girder beam (11) of a box section synthetic girder using the steel material and an aqueous soft foam embedding material is connected to a support beam of a hinge connection (32)
A fixing plate 33 having a larger cross sectional area than the supporting beam 31 and having a stud plate 34 formed on the lower surface of the supporting beam 31 is fixed so that the fixing plate 33 is fixed to the lower horizontal portion of the girder 10, (11b), and a box-section composite girder (10) using the water-based flexible foam embedding material. delete [9] The method of claim 8, wherein the second step comprises constructing a right angle reinforcement means that forms a corner between the box section synthetic girder and the wall portion using the steel material and the water soft flexible form filler at right angles without a horn, (60) on both sides connected to the girder beam (11) of the box section composite girder and the support beam (31) of the wall section using the steel material and the aqueous soft foam embedding material, and a reinforcing beam And an excavator bracket (61) which forms an angle between the wall section and the box section synthetic girder using the steel material and the water soft flexible foam embedding material at right angles,
And a beam fixing part (61b) formed on the corner part (61a) and fixed to the right corner reinforcing beam (60), characterized in that the camber bracket comprises a corner part (61a) A method of constructing a bridge structure including a composite section girder having a box section using a flexible foam embedding material. delete

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