KR100436747B1 - Apparatus and method for repairing and reinforcing bridge by using truss members - Google Patents

Abstract

The present invention uses a truss member for slab bridge, steel plate composite bridge, reinforced concrete T-girder bridge, etc., and the forward moment is largely acted at the center of the slab top plate to prevent sagging and damage from occurring. Fixing the fixing bars attached to the both ends of the truss member consisting of the "H" beam to the support brackets respectively installed on both sides of the bridges or adjacent alternating bridges for the upward load-bearing load, and the upper fixing portion of the fixed truss member In the hole formed in the slab, the fixing part attached to both ends of the horizontal reinforcement beam fixedly attached to the lower side of the slab upper plate and the hole of the upper fixing part of the truss member are combined with the tension member, and the tension member is tensioned at the upper fixing part of the truss member. Load applied to the center of the slab top plate by applying upward force to the center of the top plate It relates to an apparatus and method for rehabilitation of a slab bridges so as to cancel each other.

Description

Repair and reinforcement method of bridge using truss member {APPARATUS AND METHOD FOR REPAIRING AND REINFORCING BRIDGE BY USING TRUSS MEMBERS}

The present invention relates to a repair and reinforcement device for damaged bridges using truss members that can be applied to slab bridges, steel plate composite bridges, reinforced concrete T-beams, and more specifically, a large moment in the center of the slab top plate Both ends of truss members composed of "H" beams on supporting brackets installed on both sides of neighboring alternating bridges or piers to prevent sagging and damage and to increase the load capacity in case of deflection and damage in the middle of slab top plate Fixing anchors attached to the fixing rods, and fixing units attached to both ends of the horizontal reinforcing beams fixed to the lower side of the slab upper plate in the holes formed in the upper fixing unit of the fixed truss member and the normal fixing unit of the truss member. After joining the holes with the tension member, the tension member is tensioned at the top fixing part of the truss member. By the upward force acting on Amboise presented it relates to a rehabilitation device and method of the slab bridges so as to cancel the load applied to the central portion of the roof slab.

Generally, the bridge is divided into girder bridge, simple bridge, continuous bridge, gerber bridge, truss bridge, slab bridge, arch bridge, ramen bridge, suspension bridge and cable-stayed bridge.

As described above, a wide variety of bridges have been constructed to suit a wide variety of purposes, such as construction location and use.

Among these, the slab bridge is a bridge system that has been used since ancient times. It has a large number of shifts and bridges on the lower side, and a slab bridge is installed in the upper part of the bridge and the pier, and the slab bridge is currently mainly made of reinforced concrete. This construction is being performed, due to the weight of the bridge itself or the traffic of the vehicle, the central part of the upper plate where the moment of great action is largely damaged, causing the deflection to the lower side, and eventually, the central part of the upper plate has a problem of being destroyed.

Conventionally, a method of reinforcing the lower side of the slab upper plate using a plurality of longitudinal reinforcing beams is widely used to prevent the center portion of the slab upper plate from sagging downward.

That is, a method of reinforcing the central part of the slab top plate sagging to the bottom by mounting and fixing the vertical reinforcement beam vertically on the lower side of the slab using a plurality of existing "H" beams, but a number of longitudinal reinforcement beams have been widely used. The reinforcing beam itself had a problem of sagging downward along the slab top plate without reinforcing the concentrated load on the center portion applied from the slab top plate.

In addition, the reinforcement of the existing slab bridge is also used as the girder bridge, but the prestress introduction method is used. In the girder bridge, there is no problem by installing the anchoring stage for introducing the prestress on the side of the wide girder, but in the slab bridge, By installing the fixing stage on the side of the slab top plate with a narrow area, it may not only damage the slab top plate as a main member, but also by using prestress for the slab top plate to increase the compressive force to reinforce the constant moment section. Problems such as being limited by the compressive strength of the.

The present invention has been made to solve such a conventional problem, the truss manufactured by using the "H" beam on the support brackets respectively installed on the top of the alternating bridges or bridges of the adjacent bridge to prevent sagging of the center portion of the slab top plate Fixing the members, respectively, the fixed truss members face each other and extend upward to protrude upward from the center of the slab to form an upper fixing part formed with a hole, and fixed to the lower side of the slab top plate in the hole of the upper fixing part of the truss member The purpose of the present invention is to reinforce the upward force by combining the holes at the both ends of the horizontal reinforcement beam with the tension member and tensioning the upper fixing part to reinforce the load capacity against the load applied to the center of the slab top plate.

In order to achieve the above object, the present invention provides a support bracket mounted on the upper side of each shift and the piers supporting the slab top plate, and the upper fixing part facing each other and having a hole to be positioned above the slab top plate. A truss member fixed at both ends to a support bracket, a horizontal reinforcement beam attached laterally to the lower center of the slab top plate, and having a fixing part provided with holes at both ends, and a fixing part provided at both ends of the horizontal reinforcement beam. By combining the hole formed in the upper fixing portion of the truss member and the hole formed in the tension member to provide a tension and fixed from the upper side by providing a truss member is coupled to the existing bridge side as well as beautiful appearance as well as the main slab It does not damage the top plate and raises it while raising the center of the slab top plate. Due to large and the effect of the stress concentration of the conventional structure, it can also contain less is short and the air sigongbi in a very economically be effective.

1 is a perspective view of a truss member of the present invention mounted on a slab bridge

2 is a front view of a state where the truss member of the present invention is mounted on a slab bridge;

Figure 3 is an enlarged view of the coupling portion for fixing the truss member of the present invention to the side of the slab bridge as a separation prevention member

4 is a use state diagram in which a plurality of truss members of the present invention are provided in a continuous bridge of a slab bridge;

Figure 5 is a perspective view of a state connecting the truss member and the transverse reinforcement beam of the present invention with a tension member

Figure 6 is a perspective view of the present invention horizontal reinforcement beam

<Description of the symbols for the main parts of the drawings>

(1): shift (2): pier

(3): Slab top plate (4): Horizontal reinforcement beam

(5): truss member (6): upper fixing part

(7): hole (8): tension member

(9): beam member (10): anchor bolt hole

(11): support bracket 12: release prevention bracket

(13): steel bar 14: tie bar fixing bracket

(15): tie bar (16): holder

17: fixing unit 18: hall

19: anchorage

Referring to the configuration and operation of the present invention in detail with reference to the accompanying drawings as follows.

1 is a perspective view of a truss member of the present invention mounted on a slab bridge;

2 is a front view of a state where the truss member of the present invention is mounted on a slab bridge;

Figure 3 is an enlarged view of the coupling portion for fixing the truss member of the present invention to the side of the slab bridge as a separation prevention member,

4 is a use state diagram in which a plurality of truss members of the present invention are provided in a continuous bridge of a slab bridge;

5 is a perspective view of a state connecting the truss member and the transverse reinforcement beam of the present invention with a tension member;

Figure 6 shows a perspective view of the horizontal reinforcement beam of the present invention.

In the present invention, the support bracket (11) and the beam member (9) mounted on the upper side of the shift (1) and the shift (1) or the shift (1) and the pier (2) supporting the slab top plate (3) are mutually The upper fixing part 6 having a hole 7 formed in the upper center to be diagonally upward and facing upwards is positioned above the slab upper plate 3 and fixed at both ends to the respective support brackets 11. Holes formed in the truss member 5, the horizontal reinforcement beam 4 mounted laterally in the lower center of the slab upper plate 3, and the fixing portions 17 provided at both ends of the horizontal reinforcement beam 4 18) and the hole 7 formed in the upper fixing part 6 of the truss member 5 by a tension member 8 and tensioning and fixing the tension member 8 at the upper fixing part 6 side. .

Hereinafter, the reinforcing method and the action according to the present invention will be described in detail.

In one embodiment according to the invention the alternating (1) or pier (2) is located on both sides of the slab top plate (3) and the alternating (1) or pier (2) supports the slab top plate (3).

Of course, when the length of the bridge is short, the slab top plate is installed between the shift (1) and the shift (1), but when the length of the bridge is long, a plurality of bridges (2) are positioned at regular intervals between the shift (1) and the slab top plate (3) I can support it.

The side of the alternator 1 or the pier 2 supporting the slab top plate 3 is equipped with a support bracket 11 of a predetermined size to support the truss member 5, wherein the support bracket 11 is made of steel. It is firmly manufactured and mounted on the upper side of the shift and piers.

The support bracket 11 is formed with a plurality of anchor bolt holes 10 are fixed to the side of the alternating (1) and pier (2) using an anchor bolt.

The support bracket 11 is fixed by driving a plurality of anchor bolts on the side of the alternating (1) or pier (2), connecting the reinforcing bar to the anchor bolt fastened to the alternating (1) or pier (2) The support bracket 11 made of concrete may be fixed to the shift 1 and the pier 2 in place of the support bracket 11 made of steel.

Coupling and fixing so that the upper fixing part 6 is formed by extending the beam members, such as two "H" beams, upwardly from each other to the support brackets 11 mounted on the alternating portion 1 and the pier 2 to be joined at the middle portion. However, the upper fixing part 6 of the truss member 5 protrudes upward from the slab upper plate 3, and fixed to the support brackets 11 with the fixing bars 16 provided at both ends of the truss member 7. will be.

As a method of fixedly coupling the truss member 5 to the support bracket 11, the support 16 attached to both ends of the truss member 5 may be mounted on the support bracket 11, and then fixed by welding, and anchored. It can also be fixed using bolts.

In the upper fixing portion 6 of the truss member 5, a hole 7 having a predetermined size is formed, and the tension member 8 fixedly coupled to the fixing portions 17 formed at both ends of the horizontal reinforcement beam 4 to be described later. It can be combined with

A tie bar fixing bracket 14 having a hole 13 is fixedly coupled to both middle lower portions of the truss member 5, and the tie bar fixing bracket 14 is attached and fixed while surrounding the truss member 5. .

Deformation of the truss member 5 in the hole 13 formed in the tie bar fixing bracket 14 is coupled to the tie bar 15, which is a steel bar formed with threaded portions at both ends, to resist the horizontal force applied to the truss member 5. It is to prevent the role.

The structure in which the tie bar 15 is coupled to the tie bar fixing bracket 14 is inserted into the holes 13 formed in the tie bar fixing bracket 14 so that both ends of the tie bar 15 are protruded from each other. Then, the nut larger than the hole 13 in the threaded portion of the protruding tie bar 15 is fastened to the tie bar 15 so that the tie bar 15 is integrated with the structure of the truss member 5.

Instead of fixing the tie bar 15 by using the tie bar fixing brackets 14 at the lower middle sides of the truss member 5, the tie bar 15 may be simply attached to the side of the truss member 5 by welding. Tie bar 15 used here can be used as the steel bar or beam member as described above.

Next, between the shift (1) and the shift (1) or the shift (1) and the pier (2) and between the pier (2) and the pier (2) of the slab top plate (3) to reinforce the slab top plate (3) The horizontal reinforcement beam 9 is mounted on the lower side.

The horizontal reinforcement beam 9 is mounted on the lower side of the center of the slab upper plate 3 in which the constant moment in the span is greatest.

The horizontal reinforcement beam 9 mounted below the central portion of the slab upper plate 3 disperses the stress concentration phenomenon of the upward force by dispersing the tensile force in the direction perpendicular to the bridge while fixing the position of the tension member 8.

The horizontal reinforcement beam 4 may use a horizontal shape "H" beam, and is based on the surface contact using a beam member such as a square steel pipe instead of the "H" beam, if the tensile force is not large round bar It is also possible to make line contact using a back light.

Alternatively, when the "H" beam having a shape of an upward curved bevel with a central portion upward is mounted below the slab upper plate 3, the center portion of the horizontal reinforcement beam 4 is tensioned when both ends of the horizontal reinforcement beam 4 are tensioned upward. It is possible to prevent the lifting of the stress of the upward force on both sides of the slab top plate 3 by preventing the concave lifting downward.

The horizontal reinforcement beam 4 is formed with a plurality of anchor bolt holes 20 to which the anchor bolt can be inserted in order to be mounted on the lower side of the slab upper plate (3).

The horizontal reinforcement beam 4 is closely attached to the lower side of the slab upper plate 3, and then the anchor bolts are inserted into the plurality of anchor bolt holes 20 formed in the horizontal reinforcement beam 4 so that the horizontal reinforcement beam 4 is slab upper plate. It is attached and fixed to the lower side of (3).

Another mounting method is to use a fixing piece having a flange that can surround the horizontal reinforcing beam (4), which is in close contact with the lower side of the slab top plate (3) and then horizontally reinforcing with the fixing piece. The horizontal reinforcement beam 4 may be attached and fixed by inserting an anchor bolt in the flange of the fixing piece to surround the beam 4.

Both ends of the horizontal reinforcement beam 4 are provided with fixing units 17 having holes 18 having a predetermined size, respectively, and the holes 7 and the tension member of the upper fixing unit 6 of the truss member 5. (8) to be bonded and tensioned at the top to fix.

The tension member 8 is preferably to use a steel wire, but may also use a steel bar.

After the one end of the tension member 8 is inserted into the hole 18 formed in the fixing unit 17 at both ends of the horizontal reinforcement beam 4 attached to the lower side of the slab upper plate 3, the tension member 8 is lowered. In order to be separated from the fixing unit 17, the fixing unit 17 is coupled to and fastened with a fixing unit 19 such as a wedge.

One end is fastened to the fixing part 17 of the horizontal reinforcement beam 4 as described above, and the other end protrudes through the hole 7 formed in the upper fixing part 6 of the truss member 5 structure. The end of the protruding tension member 8 is fastened by a fixing device 19 such as a wedge to connect the horizontal reinforcement beam 4 and the truss member 5 to the tension member 8.

As described above, in the state where the fixing unit 17 of the transverse reinforcing beam 4 and the upper fixing unit 6 of the truss member 5 are combined with the tensile member 8, the tension member 8 of the upper fixing unit 6 It is to reinforce the load capacity by supporting the slab top plate (3) by applying an upward force in the center of the ground while pulling the tension using the tension jack or the like toward the upper side.

Next, after locking one side of the truss member 5 with the release preventing bracket 12, the release preventing bracket 12 is fixed to the side of the slab upper plate 3 by using an anchor bolt. 12, a plurality of anchor bolt holes are formed, and anchor bolts are inserted therein to be fixed to the side surfaces 30 of the slab top plate 3, and the truss member 5 is provided as a ruled portion 12 'of the separation preventing bracket 12. By rubbing on one side of), the truss member 5 can be prevented from falling outside of the bridge when an unexpected accident occurs in which the vehicle collides with the structure of the truss member 5.

And when the bridge (2) is built between the shift (1) and the shift (1) and the slab top plate (3) is constructed on the bridge as shown in Figure 4, the reinforcement method is the same as the reinforcement method of the simple bridge .

The pier 2 is installed between the shift 1 and the shift 1, and a support bracket 11 for supporting the truss member 5 is installed on the upper side of the pier 2, wherein the support bracket 11 is provided. One may be installed and each end of the truss member 5 adjacent to one support bracket 11 may be mounted and fixed, or two support brackets 11 may be installed side by side to each truss member 5. Each end of the) can be placed and fixed separately.

In the continuous bridge as described above, the center portion of the slab top plate 3 between the shift 1 and the pier 2 and the center portion of the slab top plate 3 between the pier 2 and the shift 1 are horizontal reinforcement beams 4. By tensioning to the upper by using a constant moment load is applied to the upper parent section of the pier, which is a continuous portion of the pier is offset with the parent of the section of the parent section to reinforce the parent section.

That is, in the simple bridge, the constant moment section is reinforced, and in the continuous bridge, both the positive and the parent moment sections can be reinforced.

A support bracket is provided on the alternating bridges 1 and pier 2 of the bridges that couple the horizontal reinforcement beams 4 to the lower side of each slab upper plate 3 forming the bridge as described above, and support and support the slab upper plate 3. The truss member (5) structure supported by the (11), as well as fixed to the horizontal reinforcing beam (4) and the truss member (5) structure as shown in Figure 5 by installing the tension member 8 as shown in FIG. Being beautiful and being environmentally friendly is to support the central part of the slab top plate 3 with a reinforcing beam to generate a rise so that it can have an effect of stress sharing with the base structure.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Therefore, the present invention combines the horizontal reinforcing beam attached to the lower side of the slab top plate with the tension member to the truss member respectively coupled to the side of the bridge alternately and the pier to tension and secure the upper reinforcement in the upper part of the slab top plate damaged by the horizontal reinforcement beam. By applying the force, the load capacity to the center of the slab top plate is reinforced to make it more reinforcement, and the construction cost for repair reinforcement is reduced due to the short air for installing the truss structure and the reinforcement beam. This is an invention that has the effect of being able to further enhance the aesthetics by becoming environmentally friendly with existing bridges.

Claims (7)

A support bracket 11 mounted on the upper side of the shift 1 and the pier 2 supporting the slab top plate 3; The upper fixing part 6 formed on a portion where the beam member is joined to each other by being extended upward and obliquely facing each other is positioned above the slab upper plate 3 and is fixed at both ends of the support bracket. Truss member 5 fixed to 11), A horizontal reinforcement beam 4 mounted horizontally in the lower center of the slab upper plate 3 and having a fixing part provided with holes at both ends thereof; The tension member 8 is coupled to the hole 7 formed in the upper fixing part 6 of the truss member 5 to the horizontal reinforcing beam 4, and the tension member 8 is tensioned upward from the upper fixing part 6. Fixing and reinforcing device for a bridge using a truss member, characterized in that the fixing is fixed. 2. The reinforcement device for bridges using truss members according to claim 1, characterized in that a tie bar serving as a beam member is attached to the side surfaces of the middle and lower sides of the truss member (5). The method of claim 1, wherein the tie bar fixing bracket (14) is attached to the lower middle of both sides of the truss member (5), and end portions formed with screw portions are fixed to both ends of the holes (13) of the tie bar fixing bracket (14). Reinforcement bridge of the bridge using a truss member, characterized in that the tie bar 15 is attached to the nut. The reinforcement device for bridges using truss members according to claim 1, wherein the horizontal reinforcing beam is formed at an oblique upward curved surface. The reinforcement device for bridges using truss members according to claim 1, wherein both side surfaces of the slab upper plate are attached to an anti-separation device against the unexpected horizontal force by locking the truss member. Mounting a support bracket (11) on the upper side of the shift (1) and the pier (2) supporting the slab top plate (3), The upper fixing part 6 having the hole 7 formed in the upper center of which is mounted on the supporting bracket 11 and fixedly supported and the beam members face each other and extends obliquely upwardly is positioned above the slab upper plate 3. Fixing both ends of one truss member to each support bracket 11, Mounting a horizontal reinforcement beam (4) laterally in the lower center of the slab upper plate (3), The hole 7 formed in the upper fixing part 6 of the truss member 5 is coupled to the hole 18 formed in the fixing unit 17 provided at both ends of the horizontal reinforcement beam 4 by the tension member 8. Repairing and reinforcing bridges using a truss member, characterized in that the tensioning member (8) in the upper fixing part 6 side to the tensioning and fixing the slab top plate (3) acts. 7. The method of claim 6, wherein tie bars are attached to side surfaces of the middle side of both sides of the truss member.