KR100989313B1 - Bridge structure by composition slab with reinforced tensile strength - Google Patents

Abstract

PURPOSE: A tension-reinforced composite slab bridge structure is provided to reduce the bending moment of a continuous slab, since steel synthesis continuous slab becomes long-span. CONSTITUTION: A tension-reinforced composite slab bridge structure comprises a steel synthesis slab(100), an abutment part(180), a lower reinforcement plate(130), a tension reinforcement material(160), and a direction converting material. The steel synthesis slab comprises a bottom slab(110) and a binding slab(120) integrated with the bottom slab. The abutment part connects to the bottom slab the connection slab and is installed on the ground. The lower reinforcement plate is mounted on the upper surface of the abutment part to increase the cross strength. The tension reinforcement material is welded with a steel pile(170) of the abutment part and integrated with the abutment part.

Description

Tensile Reinforced Composite Slab Bridge Structures {BRIDGE STRUCTURE BY COMPOSITION SLAB WITH REINFORCED TENSILE STRENGTH}

The present invention relates to a tensile reinforced composite slab bridge structure. More specifically, tension reinforcements and anchors are applied to the tension of the bridge structure to facilitate the distribution of force, and the bending moment of the continuous slab is relatively reduced in the steel composite continuous slab bridge. It is about the composite slab bridge structure that can overcome the limitation.

1 illustrates a conventional ramen bridge (ramen type slab bridge).

Conventional reinforced concrete ramen bridge is composed of a slab 11, the wall 12 and the base 13, as shown in Figure 1 and the point portion 14 is connected to the slab 11 and the wall 12 is a rigid body It is a ramen bridge of reinforced concrete materials connected by a wall, and the wall 12 and the slab 11 are connected by reinforced concrete, which is a single material connected by steel, so the cross section increases to resist the load acting on the bridge itself. Due to problems such as increase and reduction of bridge space and increase in cross section, slab type ramen bridges are generally used only for short bridges (approximately within 18m between bridges) due to increased dead weight. In general, a general bridge using a girder or a box, etc., which is generally applied, has a lot of limitations when applying a conventional ramen bridge to a site. It has been emerging.

In addition, such a ramen bridge has its advantages because the structure is simple and relatively simple to construct the bridge economically, but the cross section of the component such as the slab is increased to resist the load applied to the bridge itself. In particular, there is a problem in that the ramen bridge can only be used for bridges with short spans in general, because the cross section force (tensile force) increases in cross-section to increase the strength smoothly.

In places requiring long spans, it is necessary to reduce the bending moment of continuous slabs and to reinforce the end and center tensions.

Accordingly, the present invention provides a more efficient and economical method for constructing a ramen bridge construction by distributing the force smoothly by reinforcing a cross section which increases the cross-sectional force (tensile force) while allowing the bridge to be constructed in the long span by the conventional ramen method.

The present invention relates to a steel composite slab including a floor slab installed in a bridge, and a connecting slab continuously integrated with the floor slab, and an alternating portion connected to the floor slab and the connecting slab and installed on the ground, and to the long paper. In order to increase the necessary cross-sectional rigidity, the lower reinforcing plate mounted on the upper surface of the alternating portion, the tensile reinforcing material integrated with the alternating portion and connected to the steel pile of the alternating portion for reinforcement of the upper surface tension of the bridge end, and connected to the fixing point Consists of a direction changer that can support tensile forces.

In addition, the direction change material is made in consideration of the shape so that no gap occurs in the lower surface when the concrete reinforcement is inserted into the groove to be inserted to control the direction of the tension reinforcement.

In addition, the direction change material is formed in the upright semi-circular fitting portion to form a groove at a predetermined interval to give a direction to the tension reinforcement on the bottom plate, the side plate is formed on both sides of the bottom plate is connected through the reinforcing bar inserted .

In addition, it is composed of a bonding plate for fixing the directional reinforcing tensile reinforcement to the bridge lower portion of the reinforcing plate, and the fixing portion to be fixed to the hook shape on the upper side of the bonding plate.

In addition, the alternating portion and the bottom slab is coupled to each other by a connector including a tension reinforcement to serve as an anchor bar bearing the force transmitted in the axial direction.

In addition, the shift portion is to be supported by the steel pile base on the lower ground.

In addition, the composite slab is to be made of reinforced concrete structure, but a plurality of shear connection reinforcing bars are installed on the upper surface of the lower reinforcement plate of the continuous slab spaced apart in the direction perpendicular to the axial axis.

In addition, the lower portion of the reinforcing plate mounted on the alternating portion further includes an anchor that is bound to resist the upward lifting and axial force, the anchor is welded to allow the rotation of the composite slab, the In the case of hardening with the composite slab, an anchor connecting plate is added therebetween to weld the lower reinforcing plate.

The present invention has the effect of providing a new and efficient ramen bridge construction method by distributing the force smoothly using the tension reinforcement and the direction converting material as a reinforcement for the tension of the upper end of the bridge.

In the long span of the composite continuous slab bridge according to the present invention, the bending moment of the continuous slab can be relatively reduced, and it can be constructed in a more stable and economical ramen structure by reinforcing the end and center tension (bending parent moment). It can be seen that.

1A and 1B show the bending moment shape and perspective view of a conventional ramen type bridge.
Figures 2a, b shows the bending moment shape and cross-sectional structure of the tensile reinforced composite slab bridge structure according to the present invention.
Figure 3a shows a direction converting material and a tensile reinforcing material as a structure for integrating the alternating portion and the slab of the present invention.
Figure 3b shows that the tension reinforcing material according to the present invention is fixed to the lower bridge of the bridge central portion.
Figure 3c shows the lower reinforcing plate detail and the slab cross section according to the present invention.
Figure 3d shows a perspective view of the direction change material according to the present invention.
Figure 4a shows a perspective view showing the integration of the lower reinforcing plate and the bottom slab according to the present invention.
FIG. 4B shows a detailed side cross-sectional view of FIG. 4A.

BRIEF DESCRIPTION OF THE DRAWINGS In order to describe the present invention more clearly and easily, the following describes the best embodiments of the present invention in detail with reference to the accompanying drawings. Is not limited to the embodiments described below.

Hereinafter will be described in detail with reference to the drawings the tensile reinforced composite slab bridge structure according to the present invention.

Figures 2a, b shows the bending moment shape and cross-sectional structure of the tensile reinforced steel composite slab bridge structure according to the present invention, Figure 3a is a structure for integrating the alternating portion and the slab of the present invention direction change member and tensile reinforcing material Figure 3b shows the tension reinforcing material according to the present invention is fixed to the bridge center lower reinforcement plate, Figure 3c shows the lower reinforcing plate detail and slab cross-section according to the present invention, Figure 3d The perspective view of the direction change material by this invention is shown.

First, as shown in FIG. 2a, the alternating parts 180, which are constructed to face each other in order to construct a rigid composite slab bridge, are generally constructed by a method of cast-in-place concrete as a reinforced concrete structure, and particularly in the present invention. Before, H-Pile or steel pipe pile is made to be installed so as to be supported on a solid ground by a steel pile 170 arranged to reinforce the reinforcement to be integrated with the alternating portion 180.

After the alternating portion 180 is constructed, the tensile reinforcing material 160 is connected to the steel pile 170 to be curved to fix the tensile reinforcing material 160 by the direction converting material 200 to be described below and settle at the center and both ends. . That is, the steel pile 170 is joined to the steel pile 170 as a reinforcement measure for tensioning the upper end of the bridge and integrated with the alternating portion 180.

As shown in FIG. 3a, the direction change member 200 should be made of a ready-made product by making a groove in a circular shape to give direction to the tensile reinforcement member 160, and shape the shape so that voids do not occur when the concrete is placed. Produced in consideration.

In this case, the tensile reinforcing material 160 may use reinforcing bars, steel bars, or strands, and may select a material according to structural stability according to the structural shape.

Looking specifically, the present invention is a rigid composite slab 100 and a bottom slab (110) installed in the bridge, the slab connection slab (120) continuously integrated with the floor slab 110, and the floor slab Alternating portion 180 connected to the 110 and the connecting slab 120 is installed on the ground, and the lower reinforcing plate 130 mounted on the upper surface of the alternating portion 180 to increase the cross-sectional stiffness required for long paper lengthening, Bonded to the steel pile 170 of the alternating portion 180 to reinforce the tension of the upper end of the bridge end is connected to the tensile reinforcing material 160 integrated with the alternating portion 180, and can support the tensile force to the fixing point It is composed of a direction converting material 200. Here, the tensile reinforcing material (160a) is converted by the direction change material 200 is welded to another tensile reinforcing material (160b).

As shown in FIG. 3B, the directional reinforcement member 160c is fixed to the bridge center lower reinforcement plate 130 using the bonding plate 300, and the fixing unit at the connection slab 120 is provided with the tensile reinforcement member 160. According to the material of the hook and fixation using a separate anchorage.

In addition, the composite slab 100 is largely divided into the bottom slab 110 and the connecting slab 120 is produced integrally and the tensile reinforcement 160 connected to the steel pile 170 is integrated with the rigid composite slab 100 and throttle It acts as an anchor bar that bears the force transmitted in the direction.

The bottom plate slab 110 constituting such a composite slab 100 is installed to extend in the axial direction as shown in Figure 3c, the lower reinforcing plate 130 is a wave form bending or U-Rib reinforcement in the perpendicular direction of the throttle After being manufactured in one form, the shear connection reinforcing bar 400 is disposed in the axial direction, and the bottom plate concrete 140 is poured into the composite.

In addition, as shown in Figure 3d the present invention, the direction change material 200 to make a groove at a predetermined interval to insert the tensile reinforcement material 160 to control the direction of the tensile reinforcement material 160, It is manufactured in consideration of the shape so as not to generate a gap in the upright semicircular fitting portion 210 is formed to form grooves at regular intervals to give a direction to the tension reinforcement 160 on the bottom plate 230. In addition, side holes 220 are formed at both sides of the bottom plate 230 so that reinforcing bars are inserted and connected thereto.

The lower reinforcing plate 130 basically functions as a reinforcing member to increase the cross-sectional rigidity of the continuous slab 100 and functions as a formwork of the bottom plate concrete 140 for slab formation.

In this case, the lower reinforcing plate 130 may be manufactured in a horizontal cross-section or an arch-shaped cross section, and by manufacturing the lower reinforcing plate 130 in such an arch cross-sectional form, the aesthetics are also enhanced as compared to a simple sphere shape and a transfer load. It can be effectively delivered to the shift unit 180.

In the present invention, the rigid composite slab 100 functions as a continuous beam form as the bottom slab 110 and the connecting slab 120 based on the alternating portion 180 located on the inner bottom from both ends, the connecting slab 120 It can be seen that the cantilever structure elastically supported on the ground based on the alternating portion 180.

When the rigid composite slab 100 is installed to be supported by being mounted on the alternating portion 180 in the form of a continuous beam, the upper tensile bending flexural moment acting on the rigid composite slab 100 in the bending moment diagram of FIG. 2B (-M1). ) Is significantly reduced in comparison with the bending parent moment acting on the right angle of the conventional ramen bridge, and simultaneously behaves with the connecting slab 120, the bending moment of the continuous slab in the long-lasting steel composite continuous slab bridge according to the present invention In addition to the relatively reduced effect, the reinforcement to the end and center tension (bending parent) can be constructed in a more stable and economical ramen structure.

Accordingly, when the composite slab bridge according to the present invention is completed and the live load by the traffic load such as a vehicle acts, the floor slab 110 constituting the composite slab 100 may be lifted upward due to the traffic load. Therefore, in order to prevent this, it is preferable to be connected to the floor slab 110 after the construction of the anchor 500 in consideration of the necessary reaction force in advance.

The anchor 500 may be constructed using a conventional anchor steel rod or ground reinforcement anchor installed in the ground. This will be described in detail below.

Figure 4a shows a perspective view showing the integration of the bottom reinforcing plate and the bottom slab according to the present invention, Figure 4b shows a detailed side cross-sectional view of Figure 4a.

As shown in FIGS. 4a and 4b, the tensile reinforced composite slab bridge structure according to the present invention may further use an anchor 500 to integrate the lower reinforcing plate 130 and the bottom slab 110. ) Is a "J" shaped device which is bound to resist the upward lifting and the force in the axial direction by mounting the lower reinforcing plate 130 on the alternating portion 180, and the rotation of the composite slab 100. In order to allow the welding, it is preferable that the welding is connected to the lower reinforcing plate 130 by adding an anchor connecting plate 510 therebetween when the steel composite slab and the steel are rigidly connected. The figure representatively shows a case of welding connection.

100: steel composite slab 110: floor slab
120: connecting slab 130: lower reinforcing plate
140: bottom plate concrete 150: alternate connection
160: tensile reinforcing material 180: alternating portion
190: packing part 200: direction changer
210: upright semi-circular fitting 230: shear composite rebar
300: bonding plate 400: shear connecting rebar
500: anchor 510: anchor connecting plate

Claims (8)

A rigid synthetic slab (100) including a bottom slab (110) installed on the bridge and a connecting slab (120) integrally slabed with the bottom slab (110);
An alternating portion 180 connected to the bottom slab 110 and the connecting slab 120 and installed on the ground;
A lower reinforcing plate 130 mounted on an upper surface of the alternating portion 180 to increase cross-sectional rigidity required for long paper lengthening;
A tensile reinforcing member (160) joined to the steel pile (170) of the alternating portion (180) and integrated with the alternating portion (180) to reinforce the bridge end surface tension;
Including a direction change member 200 that can support the tensile force by connecting to the fixing point;
The direction change material 200
An upright semicircular fitting portion 210 is shaped to form grooves at predetermined intervals so as to give direction to the tensile reinforcement 160 on the bottom plate 230, and side holes 220 on both sides of the bottom plate 230. ) Is formed so that the reinforcing bar is inserted through the connection reinforced tensile slab bridge structure.
delete delete The method of claim 1,
Bonding plate 300 for fixing the direction change tensile reinforcement 160 to the bridge central lower reinforcement plate 130;
Fixing unit 310 to be fixed in the shape of a hook on the upper side of the bonding plate 300;
Tensile reinforced steel composite slab bridge structure characterized in that it further comprises.
The method of claim 1,
The alternating portion 180 and the bottom slab 110 is bonded to each other by the connector including the tension reinforcement 160, tensile reinforcement stiffness, characterized in that it serves as an anchor bar bearing the force transmitted in the axial direction Slab bridge structure.
The method of claim 1,
The alternating portion 180 is a tensile reinforced composite slab bridge structure, characterized in that to be supported by the steel pile (170) base on the lower ground.
The method of claim 1,
The composite slab 100 is made of reinforced concrete structure, but the tensile reinforcing steel, characterized in that a plurality of shear connection reinforcing bar 400 is installed in the axial direction perpendicular to the upper surface of the lower reinforcement plate 130 of the continuous slab Composite slab bridge structure.
The method of claim 1,
Mounting the lower reinforcing plate 130 to the alternating portion 180 further includes an anchor 500 that is bound to resist upward lifting and axial force, the anchor 500 is the rigid composite slab To allow the rotation of the (100) is no welding, when the rigid composite slab 100 and the rigidity is characterized in that the welding connection with the lower reinforcing plate 130 by adding an anchor connecting plate 510 therebetween. Tensile reinforced composite slab bridge structure.

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