KR200212300Y1 - Flexible joint for a bridge - Google Patents

Abstract

The present invention relates to a joint device for elastically connecting between the upper plate and the upper plate installed on the upper portion of the steel mold, and more specifically, to improve the drainage and waterproofness between the upper plate and the upper plate to prevent corrosion of the lower steel mold and concrete mold It relates to a formulation expansion joint device for bridges that can be suppressed to further improve the durability of the bridge.

The present invention, in the expansion joint device for connecting the plurality of top plates 121 installed on the upper portion of the steel mold 120 of the bridge 100, the pair of bodies (10a, 10b) of the cross-sectional structure of the ladder type Each inclined surface 11 is provided with a plurality of rows of fixing grooves 12 so that one end of the reinforcing bar 121a constituting the upper plate 121 is inserted and arranged uniformly, and the upper plate 121 is disposed at the lower end of the inclined surface 11. While forming a drain groove 13 for draining the fluid introduced into the gap between the contact surface and the outside to both sides in the width direction, the upper end of the pair of bodies (10a, 10b) as a plurality of bolt members (15) Steel joints 10 each mounted so that the rejects 15a and 15b cross each other; Both ends are fixed to the lower surface of the opposite facing finger portion (15a, 15b) and the elastic joint portion 20 having an auxiliary plate 22 made of a metal material free of plate deformation inside the rubber plate 21 sagging downward; It provides an expansion joint device for a bridge comprising a.

Description

Flexible joint for a bridge

The present invention relates to a joint device for elastically connecting between the upper plate and the upper plate installed on the upper portion of the steel mold, and more specifically, to improve the drainage and waterproofness between the upper plate and the upper plate to prevent corrosion of the lower steel mold and concrete mold It relates to a formulation expansion joint device for bridges that can be suppressed to further improve the durability of the bridge.

In general, as shown in FIG. 1, the bridge 100 is provided with a plurality of vertical piers 110 at regular intervals, and an abdominal plate is mounted on both left and right sides thereof, and various types of beams are mounted therein. Consists of a steel mold (120) made of a child (I) type or box type installed horizontally via the shoe 130 is installed in the meeting point, the upper portion of the steel mold 120 according to the temperature change It is connected to each other in the longitudinal direction by the expansion joint device 140 so as to be able to flexibly adapt to the length deformation, and install a top plate 121 made of reinforcement and concrete.

On the other hand, the conventional expansion joint device 140 connecting them between each other between the top plate 121 and another top plate 121, as shown in Figure 2, the bolt or other fastening member at the rear end of the one top plate 121 The first joint part 140a is integrally connected to each other, and the second joint part 140b is integrally connected to the front end of the other upper plate 121, and each of the finger parts crosses opposite to each other. 141a and 141b, while rain water falling from the gap between the finger portions 141a and 141b is provided in the lower portions of the first and second joint parts 140a and 140b facing each other. A rubber plate 142 was provided to prevent flow to (120).

However, the conventional expansion joint device 140 includes sodium chloride for snow removal which flows through a gap between the finger parts 141a and 141b when the rubber plate 142 is damaged due to cracking or breakage due to aging. Since the fluid such as rain water and sewage is not blocked by the rubber plate 142 and flows into the lower steel mold 120, the steel mold 120, which is an important structure of the bridge 100, is introduced by the introduced rainwater and sewage. There was a problem of greatly deteriorating the durability of the bridge 100 is greatly corroded.

In addition, when the upper plate 121 is damaged by an external force and a gap occurs in the contact surface where the first and second joint parts 140a, 140b and the upper plate 121 contact each other, rainwater and sewage introduced through the upper plate 121 Since the water is flooded through the upper plate 121 made of reinforcing bars and concrete, there was a fatal problem of causing corrosion of the steel mold or whitening of the reinforced concrete mold, thereby greatly reducing its life and durability.

Therefore, the present invention has been made to solve the problems described above, the purpose of which is to provide an aluminum plate in the rubber plate of the expansion joint to improve the waterproofness, having a formulation structure so that the drainage on the contact surface with the top plate is good By providing a steel joint, to prevent corrosion and whitening of the lower steel mold and concrete mold to provide a bridge type expansion joint device for the bridge to further improve the durability of the bridge.

1 is a front view showing a typical bridge

Figure 2 is a longitudinal sectional view showing the expansion joint device for a bridge according to the prior art

Figure 3 is a whole perspective view showing a formulation expansion joint device for bridges according to the present invention

Figure 4 is a longitudinal cross-sectional view showing a formulation expansion joint device for bridges according to the present invention

※ Explanation of code for main part of drawing

1: expansion and contraction equipment 10: steel joint

10a, 10b: body 11: inclined surface

12: fixing groove 13: drain groove

14: vertical surface 15: bolt member

15a, 15b: finger 20: expansion joint

21: rubber plate 22: auxiliary plate

100: bridge 110: bridge

120: steel mold 121: top plate

130: shoe

In order to achieve the above object, the present invention, in the expansion joint device for connecting the plurality of upper plates installed on the upper portion of the steel mold of the bridge, the upper plate on each inclined surface of the pair of bodies made of a ladder-shaped cross-sectional structure One end of each of the reinforcing bars is formed to have a plurality of rows of fixing grooves so as to be uniformly arranged, and at the lower end of the inclined surface, the drain grooves for draining the fluid introduced into the contact surface gap with the upper plate to both sides outside are formed long in the width direction. On the other hand, the upper portion of the body of the pair of steel joints mounted to each other so as to cross the finger parts as a plurality of bolt members facing each other; Both ends are fixed to the lower surface of the facing finger respectively, the inside of the rubber plate drooped downward, the expansion joint portion having an auxiliary plate made of a metal material free of plate deformation; providing a formulation expansion joint device for a bridge By

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

Figure 3 is an overall perspective view showing a formulation expansion joint device for a bridge according to the present invention, Figure 4 is a longitudinal sectional view showing the formulation expansion joint device for a bridge according to the present invention.

Bridge formulation expansion joint device 1 according to the present invention, as shown in Figures 3 and 4, between the upper plate 121 and another upper plate 121 installed on the upper portion of the steel mold 120 in the length deformation It is installed on the connection portion so as to be able to flexibly respond to the upper plate 121 without breaking, such a device 1 is made of a steel joint 10 and the expansion joint 20.

That is, the steel joints 10 provided as a pair between the upper plate 121 to be connected are integrally connected to the line and the rear end of the upper plate 121, respectively, each of which has a ladder-type symmetric structure Bars 10a and 10b are formed on the inclined surfaces 11 of the pair of bodies 10a and 10b by forming a plurality of rows of fixing grooves 12, together with concrete 121b. Since each end of the plurality of reinforcing bars 121a installed in the longitudinal direction so as to firmly configure the top plate 121 is inserted into the fixing groove 12 to be uniformly and evenly disposed, the top plate ( The connection between the 121 and the body (10a), (10b) can be more firmly fixed.

In addition, at the lower end of each of the inclined surfaces 11 of the bodies 10a and 10b, the fluid flowing into the contact surface gap generated when the upper plate 121 is broken is easily provided to both sides of the bodies 10a and 10b. In order to prevent the inundation to the inside of the top plate 121 of the concrete structure by the drainage treatment, the drainage groove 13 for draining the introduced rainwater, sewage to the outside is formed long in the width direction, the central portion of the drain groove 13 Is preferably formed higher than the forming height of both ends so that the drainage of rainwater, filthy water is good.

In addition, the upper portions of the upper plate 121 according to the climate change by mounting the finger portion 15a, 15b interlocked with each other as a plurality of bolt members 15 at the upper end of the body (10a, 10b), respectively. With the body 10a, 10b connected to the stretchable upper plate 121 when the length is deformed, the gap between the finger parts 15a, 15b that are widened or narrowed to be widened or narrowed.

In addition, the expansion joint 20 provided between the vertical surfaces 14 of the body 10a, 10b facing each other is the finger portion 15a, 15b of the plurality of bolt members 15, respectively. It is provided with a rubber plate 21 is fixed at both ends between the lower surface and the upper end of the body (10a, 10b), the rubber plate 21 is the body (10a) according to the length deformation of the upper plate 121, (10b) It is provided with a predetermined length so that it can be opened to both sides sufficiently without breaking when the gap is opened, and is usually provided in a shape that sags downward between the vertical surfaces of the bodies 10a and 10b facing each other.

In addition, the finger portion 15a, 15b of the finger portion 15a, 15b to block the flow of fluid such as rain water, sewage, etc. flowing through the gap between the finger portion (15a, 15b) to the lower steel mold 120 The rubber plate 21 installed directly below is provided with an auxiliary plate 22 made of a metal material, such as aluminum, which is resistant to corrosion and freely deformed in accordance with expansion and contraction of the bodies 10a and 10b. Both ends of the auxiliary plate 22 should be provided with a length shorter than the length of the rubber plate 21 so as not to be affected by the fixing force by the bolt member 15 for fixing both ends of the rubber plate 21.

Referring to the operation and effects of the present invention configured as described above are as follows.

That is, the upper plate 121 as the upper structure in accordance with the length change according to the temperature change between the upper plate 121 and the other upper plate 121 is installed on the pier 110 to the formulation expansion joint device 1 of the present invention. When installing to keep the connection between the elastic, first, the top plate 121 is each body that is mounted on the line, the rear end of each top of the reinforcing bar (121a) constituting it during its manufacture Since it can be inserted into a plurality of rows of fixing grooves 12 formed on the inclined surfaces 11 of 10a and 10b, respectively, the rebar 121a can be uniformly and efficiently performed. In addition, by maintaining the connection force between the body (10a), (10b) and the top plate 121 can be improved durability of the constructed bridge (100).

When the upper plate 121 is damaged, a gap is generated in the contact surface between the bodies 10a and 10b and the upper plate 121 so that rainwater and sewage may flow through the body 10a and 10b. Since the drain groove 13 is formed at the bottom of the inclined surface 11 in the width direction, the concrete by rainwater immersion by effectively draining the rainwater and sewage introduced through the drainage groove 13 inclined to both sides to the outside effectively. This can prevent corrosion and breakage of the 121b.

In addition, rainwater, sewage, etc. flowing into the gap between the finger portions 15a and 15b respectively installed on the upper ends of the bodies 10a and 10b are lowered by the rubber plate 21 installed under the lower steel mold ( 120 is blocked so as not to flow to the side, even if a crack occurs due to aging of the rubber plate 21, since the auxiliary plate 22 made of a metal material such as aluminum is embedded therein, it is related to the crack of the rubber plate 21 It is possible to increase the waterproofness by discharging the incoming rainwater, sewage, etc.

When the rubber plate 21 is severely damaged and its function is completely lost, the bolt member 15 for fixing the fingers 15a and 15b is dismantled and then simply replaced with a new rubber plate 21. Can be.

As described above, according to the present invention, the body 10a, 10b of the ladder-shaped cross section in which the fixing groove 12 and the drainage groove 13 are formed on the inclined surface 11, respectively, and the auxiliary plate 22 capable of plate deformation. By having a rubber plate 21 with a built-in, it is possible to firmly connect the upper plate 121 and the body (10a), (10b) of the iron and concrete structure, rainwater introduced by the damage of the upper plate 121, Since the drainage performance of the sewage is excellent, and rainwater and sewage introduced through the fingers 15a and 15b can be blocked regardless of the rupture of the rubber plate 21, corrosion of the lower steel mold 120 as in the prior art And by preventing the whitening of the concrete mold effect is obtained that can significantly improve the durability of the bridge (100).

Claims (1)

In the expansion joint device for connecting a plurality of top plates 121 installed on the upper portion of the steel mold 120 of the bridge 100, One end of the reinforcing bar 121a constituting the upper plate 121 is provided with a plurality of rows of fixing grooves 12 so as to be uniformly arranged, and a pair of bodies 10a and 10b having a ladder-shaped cross-sectional structure. On the lower end of each inclined surface 11, the drain groove 13 for draining the fluid introduced into the contact surface gap with the upper plate 121 to both sides is formed long in the width direction, while the pair of bodies 10a, On the upper end of the (10b), a plurality of bolt members (15), each of the steel joints (10) mounted so as to intersect the fingers (15a, 15b) opposite each other; Both ends are fixed to the lower surfaces of the facing fingers 15a and 15b, respectively, and the elastic joint 20 having an auxiliary plate 22 made of a metal material free of plate deformation is formed inside the rubber plate 21 which sags downward. Formulation expansion joint device for a bridge, characterized in that consisting of.