KR100583368B1 - Institution of injury protect for bridge - Google Patents

Abstract

 The present invention provides a scour prevention bar that can be easily coped with the change in water level by configuring the scour prevention bar installed to protect the base of the bridge to move up and down in accordance with the change in the water level of the river.

To this end, the present invention is fixed to the bottom of the river guide 12 to be fixed to the bottom side of the pier foundation 100 to be immersed in the water surface, the predetermined length to the tip of the guide post 10 A plurality of guide bars 20 are installed, the filter net 30 to cover the outer peripheral surface of the pier foundation 100 submerged in the water while moving up and down along the guide bar 20, the upper end of the filter net 30 Positioned at the tip of the guide bar 20 to prevent the buoy 40, the buoy 40 to repeat the rise and fall along the guide bar 20 with the filter net 30 in accordance with the water level change. Characterized in that it is composed of a stopper 50 is screwed to the formed threaded portion (22).

Pier, Pier Foundation, Bridge, Scour, Scour Prevention, Water Surface

Description

Pier Foundation Scour Guard {Institution of injury protect for bridge}

1 is an exploded perspective view of a bridge foundation scour prevention bar to which the present invention is applied;

Figure 2 is a plan view of the pier foundation scour prevention bar to which the present invention is applied from the top,

3 is an operation state diagram of the bridge foundation scour prevention bar to which the present invention is applied,

3a is a state in which the scour bar is lowered because the reference water level is lowered,

3b is a state in which the scour prevention bar is raised due to the increase of the reference level;

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

10: guidepost 12: fixture

20: guide bar 22: screw portion

30: filter network 35: auxiliary port

40: float 50: stopper

100: Pier Foundation

The present invention relates to a scour prevention bar, and more particularly, the scrubbing rod installed to protect the pier foundation submerged in the water surface can be easily configured to move up and down in accordance with the change in the river water level to easily cope with the change in the water level. Is to provide an improved scour guard.

In general, when installing a bridge that crosses a river or a river, the bottom part of the river is settled and fixed, and a pier part is constructed to support the pier at the center of the well.

The lower side of the well-vent base constructed as described above may be deformed (washing phenomenon) by being hit by the speed of the flowing river or an underwater object moving upstream and downstream.

If the deformation is severe, damage to the center of the pier may cause the bridge to collapse.

Therefore, in the past, the bagged concrete was dropped in the water, but this method has the disadvantage that the leveling of the water is not constant because it uses equipment such as a crane, and other re-installation works in poor construction such as the bagged concrete dropped to prevent scouring. It cost a lot of money.

In order to solve this problem, Korean Patent Publication No. 1005-23378 'Bridge Well Foundation Scour Preventer' installs a rotation fixing frame which sufficiently covers the well foundation of the pier and installs a spiral rail on the outer circumferential surface of the rotation fixing frame to the spiral rail. In order to improve the assemblability, a plurality of streamlined scour prevention blocks with rotating wheels are fitted by their own weight to prevent scour caused by river water.

However, the above-described method has a complicated structure because the spiral groove is formed on the circumferential surface of the rotation fixing frame, and there is the inconvenience and inconvenience of pushing the scour prevention block one by one in the spiral groove.

In addition, the conventional scour prevention bar is composed of a fixed type that is fixed in position, there is a problem that is exposed to the outside when the water level of the river falls to hinder the beauty of the piers.

Accordingly, the present invention was invented to solve the problems of the conventional scour bar, the present invention is configured to move up and down according to the water level change of the scour bar installed to protect the foundation of the bridge The purpose is to provide a scour prevention bar that can easily cope with changes in the water level.

In order to achieve the above object, the present invention, the guide post 10, which is fixed to the bottom of the pier to the outer peripheral surface of the pier foundation 100 is locked to the surface of the river, the predetermined length is the guide A guide bar 20 in which a plurality of posts 10 are placed at the tip of the post 10, and a filtering net 30 capable of moving up and down along the guide bar 20 to surround a portion of the outer circumferential surface of the bridge foundation 100, Located at the upper end of the filter net 30, the buoy 40, which is to be automatically raised and lowered along the guide bar 20 with the filter net 30 in accordance with the water level change, to prevent the buoy 40 from being separated It characterized in that it consists of a stopper 50 is screwed to the threaded portion 22 formed at the tip of the guide bar 20.

Hereinafter, with reference to the accompanying drawings, the configuration, operation, and effects according to a specific embodiment of the bridge scour prevention scaffold of the present invention will be described.

In the accompanying drawings, Figure 1 is an exploded perspective view of the pier foundation scour prevention bar to which the present invention is applied, Figure 2 is a plan view from the top of the pier foundation scour prevention bar to which the present invention is applied, Figures 3a, 3b is a pier foundation scour applied to the present invention An operating state diagram illustrating the operating relationship of the guard is shown.

The scour bar of the present invention is a guide post 10 is fixed to the bottom of the steel fixture 12, a plurality of guide bars 20, which are fixed to the upper surface of the guide post 10, the guide bar 20 Accordingly, the upper and lower movement of the filtering net 30, the buckle 40 is fixed to the upper side of the filtering net 30, and the stopper 50 is composed of a stopper 50 to prevent the separation.

In the above configuration, the guide post 10 is formed to have a size that sufficiently covers the lower periphery of the piers to be fixed to the bottom of the river through the fixture 12.

The guide post 10 has a streamlined structure in which the body is formed to have a lower side than the upper side, thereby greatly increasing the steel bottom and the ground surface, so that the flow rate resistance can be reduced, and a plurality of toenails are fixed along the edge surface thereof. The rake 14 is installed to be fixed at regular intervals, so that the fixed rake 14 partially exerts a penetration into the bottom of the river, so that the guide post 10 is firmly fixed even at a high flow rate of water. To be.

In addition, the central upper surface portion of the guide post 10 forms a neck portion 15 recessed inwardly to mitigate the resistance of water flowing along the steel delivered to the guide post 10.

Guide bar 20 is fastened to one side end fixed to the guide post 10 so as to protrude to the upper surface of the guide post 10, the filter net 30 and the mouth 40 freely along the guide bar 20 up, down It is movable, and the stopper 50 is fastened to the screw part 22 by forming the screw part 22 by the predetermined length in the front-end | tip of the guide bar 20. As shown in FIG.

The filter net 30 is a cylindrical net that can prevent the relatively large foreign matter floating in the river directly contact the pier, the filter net 30 is formed in a larger diameter than the guide post 10 to the upper side 40 is settled) is a closed type, except for the portion through which the hole 31 and the piercing base 100 through which the guide bar 20 penetrates, and is closed and the opposite lower side is open. When the water level is changed, the filter net 30 is fitted to wrap around the upper surface of the guide post 10.

Inner side of the filter net 30 may be installed to be embedded with a separate auxiliary accessory (35) formed of the same material as the relatively thin thickness of the spirofoam or buoy (40). Thus, the filtering net 30 retains the buoyancy to rise to the water itself by the auxiliary buckle 35 without depending on the buoy 40.

Float 40 is placed on the upper side of the filter net 30 is made of a material such as lightweight styrofoam foam so that a portion of the upper surface is always floating on the water surface, and can move up and down along the water level with the filter net 30 It is supposed to be.

Since the filter net 30 and the floats 40 are interlocked with each other, the lower side of the float 40 or the floats 40 on the upper surface of the filter net 30 may be assembled so that the fixtures may be moved to work. .

Although the present invention shows that the sub-ball 40 and the filtering net 30 are integrated, the sub-ball 40 and the filtering net 30 are not integrally formed, that is, the sub-ball 40 and the filtering net 30 are formed in a hemispherical shape having a structure corresponding to each other. If the assembly is assembled to face each other has the advantage that partial replacement is possible.

A stopper 50 is screwed to the tip of the guide bar 20 to which the sub-ball 40 is assembled to prevent the sub-ball 40 from being arbitrarily separated.

According to the present invention configured as described above, the lower side of the pier foundation, that is, the part immersed in the river, can be safely protected without the occurrence of scour due to the scour prevention bar.

The pier foundation is in the part submerged in the water surface to protect the guide post 10 is installed on the bottom of the river as a wrap around the lower side of the pier foundation built into the river bottom, the upper side is assembled to the guide post 10 The filtering net 30 and the mouth 40 will be able to securely wrap and protect the outer peripheral surface of the remaining piers foundation.

Therefore, even if the river is rapidly blowing due to the rainy season or the flow rate is relatively fast acting, the lower side of the bridge foundation (100) submerged in the river, the filtering network 30 is primarily filtered, thereby greatly reducing the flow rate of the river flowing to the bridge foundation (100) It becomes possible, because the wave or wave flowing along the river to the buoy 40 located on the upper side hit the pier foundation, the pier foundation 100 is not affected by scour.

In addition, the scour bar of the present invention is able to automatically cope with changes in the water level of the river.

As shown in FIG. 3A, when the water level of the river drops due to a drought or the like, the filter net 30 and the mouth 40 of the scour prevention bar are lowered toward the guide post 10 due to the water level change. Scour can be prevented from working on the foundation of the bridge.

On the contrary, as shown in FIG. 3B, when the rainfall increases due to the rainy season, the water level rises, the scrubbing filtration network 30 and the mouthhole 40 also rise as the water level of the river rises, so as to surround the water contact area. It becomes possible.

As such, the present invention can prevent the piercing base parts from being damaged because the scour guards can protect the pier foundations which are always submerged in water surface as well as the contact with the water surface even if the water level is changed.

As described above, according to the present invention, the pier foundation part which is immersed in the river can be safely protected by the scour bar, and the filter net and the mouth of the scrub bar move in contact with the water while moving up and down according to the river water level change. There is an advantage, such as to protect the area at all times.

In addition, since the structure is simple, the construction is simple and the cost is low, it is very effective to protect the existing pier foundation, and it is a useful invention having the advantage of being economically constructed.

Claims (3)

Guide post 10 which is fixed to the bottom of the river to surround the lower side of the bridge foundation 100 submerged in the water surface, the guide is a predetermined length and a plurality of guides are entered into the tip of the guide post 10 Bar 20, while moving up and down along the guide bar 20, the filtering net 30 to surround the outer circumferential surface of the pier foundation 100 submerged in the water surface, located in the upper end of the filtering net 30 to change the water level Along with the filter net 30 along the guide bar 20 along the guide bar 20 to repeat the up and down, the threaded portion 22 formed at the tip of the guide bar 20 to prevent the buckle 40 is separated Pier foundation scour prevention bar, characterized in that consisting of a stopper 50 is screwed to. The pier foundation scour bar according to claim 1, characterized in that the buckle (40) and the filtration net (30) are configured in a hemispherical shape having a structure corresponding to each other, and are assembled to be assembled to face each other. The method according to claim 1 or 2, wherein the auxiliary buckle 35 is built into the inner side of the filtering net 30, the filter base 30 is characterized in that the pier foundation, characterized in that it retains the buoyancy to rise to the surface itself versus.

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