KR200324755Y1 - Auto gap system for an expansion joint of a bridge - Google Patents

Abstract

The present invention relates to a gap retainer of the expansion joint device for bridges, which is rotatably installed in a horizontal direction on the first upper structure side and at least one pair of first links having a free end, and in a horizontal direction on the second upper structure side. At least one pair of second links having a free end and a free end of the first link and a free end of the second link disposed in a diagonal direction thereof so as to be rotatable in a horizontal direction, respectively, and connected to a rail at an intersection with each other. It has a configuration comprising at least a pair of third links to hold the rail in the horizontal position, and because the configuration is simple but the buffering effect in the vertical direction to cushion the impact when passing through the vehicle is damaged There is no work, and it has the advantage that the noise level is low and the height does not change according to the degree of expansion.

Description

Auto gap system for an expansion joint of a bridge}

The present invention relates to an expansion joint for bridges that are installed between an upper structure and an upper structure of an overpass or a bridge, and more particularly, to a gap retainer for an expansion joint for a bridge.

In general, the superstructure of the bridge is expanded or contracted in response to temperature changes and the like. Therefore, when constructing bridges, there is an appropriate gap (generally called "gap") between two neighboring superstructures. The expansion joint is installed between the upper structure and the upper structure, the expansion joint is provided with a gap retainer. The gap retainer of the expansion joint for bridges keeps the gap between the intermediate rails between the two superstructures constant.

Conventional spacers are made of rubber or urethane, but they do not sufficiently support the large force acting on the intermediate rail due to the increase of the vehicle and the speed of the vehicle, so the interval between the intermediate rails remains the same on both sides. Instead, it causes a problem that the rail is frequently deformed and broken, and the durability of the rail itself is also lowered.

The improvement of the shortcomings of the above-mentioned gap retainer is described in the registered patent publication of the "expansion joint device" (hereinafter referred to as a pre-registered invention) registered as a patent registration number 10-0283364 on December 07, 2000. . This pre-registered invention is provided with a first support member on each of the two upper plate edges facing the bridge, a second support member between the two first support members, and rotated vertically between the lower two first support members. Combining the first connecting member to the third connecting member and the post so as to enable the folding and unfolding according to the degree of expansion of the two upper plates, the second supporting member is supported while maintaining the gap between the two upper plates. It allows the vehicle to pass smoothly between the two tops while still allowing for a certain amount of time.

Although there is an advantage as described above in the pre-registered invention, the gap retainer applied thereto does not have a buffering function in the up and down direction, so there is a possibility of being damaged by the impact of passing the vehicle, and some noise is generated. However, the height and height vary depending on the degree of expansion, and the structure is somewhat complicated. In this case, when the vehicle passes, the vehicle is rattled, which reduces the riding comfort and adversely affects the strength of the bridge structure itself.

The purpose of the present invention is to provide a gap retainer for expansion joints for bridges, which is easy to maintain because the structure is not complicated and the structure is not complicated. have.

1 is a cross-sectional view of a bridge to which the spacer is applied according to the present invention,

FIG. 2A is an enlarged longitudinal sectional view in I-I of FIG. 1;

FIG. 2B is an enlarged longitudinal sectional view in J-J of FIG. 1;

2C is an enlarged longitudinal sectional view at K-K of FIG. 1;

Figure 3 is an enlarged planar cross-sectional view showing a state in which the spacer is contracted according to the present invention according to M-M of Figure 2b,

Figure 4 is an enlarged planar cross-sectional view showing a state in which the gap retainer 3 is expanded,

The fifth is an enlarged front view of the first bolt,

6 is an enlarged front view of the third bolt,

Explanation of symbols on the main parts of the drawings

100: expansion joint 110: first fixing member

120: second fixing member 130: rail

140: control box 142: support bar

200: gap maintainer 210: first link

220: second link 230: third link

The gap retainer of the expansion joint device for bridges according to the present invention includes a rail installed between the first upper structure and the second upper structure that are disposed facing each other with a gap therebetween, allowing the expansion of the two upper structures while allowing the expansion of the two upper structures. A bridge retainer of a expansion joint for bridges that supports a wheel of a passing vehicle so that the vehicle can pass smoothly between two upper structures, the at least one having a free end rotatably installed horizontally on the first upper structure side. A pair of first links, at least one pair of second links rotatably installed in a horizontal direction on a second upper structure side and having a free end, and a free end of the first link and a second link disposed diagonally thereto The rails are connected to each other so that they can be rotated in the horizontal direction. The note has a configuration that includes at least a pair of third links.

When viewed from above, the first link and the second link have a shape in which the free end is bent to one side, and the third link has a shape in which both ends are bent in opposite directions to each other.

The pair of first links are provided with through holes at both ends so as to be rotatable about the same axis of rotation of the first upper structure side, and the pair of second links are provided with through holes at both ends of the second upper structure side It is preferable to be rotatably installed around the same rotation shaft, and the pair of third links may be configured to be rotatably connected to each other by having a through hole at an intersection point between both ends connected to the first and second links.

The pair of first links are disposed at a lower end of the first fixing member installed at the edge of the first upper structure and are rotatably supported in a horizontal direction by a first bolt having a stage, wherein the pair of second links are connected to the second link. It is disposed at the lower end of the second fixing member installed on the edge of the upper structure and is rotatably supported in a horizontal direction by a second bolt having a stage, a pair of third links between the first fixing member and the second fixing member It is more preferable that the structure is connected to each other by a third bolt provided at the intersection of the lower third link of the rail member to be installed.

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

1 is a cross-sectional view of a bridge to which the spacer is applied according to the present invention, FIG. 2A is an enlarged longitudinal cross-sectional view of II of FIG. 1, FIG. 2B is an enlarged longitudinal cross-sectional view of JJ of FIG. 1, and FIG. 2C is a KK of FIG. 1. An enlarged longitudinal cross-sectional view of.

2A-2C show the first top structure 10 and the second top structure 20 of the bridge. The first upper structure 10 and the second upper structure 20 are spaced apart, and the expansion joint device 100 is installed between the two upper structures (10, 20).

The expansion joint device 100 includes a first fixing member 110 installed on the first upper structure 10 and components for fixing it to the first upper structure 10. Components for fixing the first fixing member 110 to the first upper structure 10 are welded to the anchor hoop 112 and the anchor hoop 112 buried near the edge of the first upper structure 10. It consists of a bracket 114 to hold the first fixing member 110.

On the second upper structure 20 side, the second fixing member 120 and components for fixing it to the second upper structure 20 are installed. Components for fixing the second fixing member 120 to the second upper structure 20 are welded to the anchor hoop 122 and the anchor hoop 122 buried near the edge of the second upper structure 20. Is made of a bracket 124 to hold the second fixing member 120.

The rail 130 is installed between the two upper structures 10 and 20. The rail 130 is to fill the gap between the two superstructures (10, 20) so that the vehicle passing over it can pass smoothly without rattling. The rail 130 flows in the longitudinal direction of the bridge between the control box 140 and the two control box 140, which are respectively installed near both ends of the first and second upper structures (10, 20) Supported by a supported support bar 142. The spot bar 142 is supported by the slide bearing 146.

A rubber seal 150 is installed between the first fixing member 110 and the rail 130 and between the second fixing member 120 and the rail 130 to prevent rain or debris from falling down. .

In the left and right middle portions of the rail 130, the spacer 130 according to the present invention for installing the rail 130 to maintain the same distance as the two upper structures 10 and 20 on both sides is installed. The spacing holder 200 will be described in more detail with reference to FIGS. 2B and 3 to 6.

FIG. 3 is an enlarged plan sectional view showing a state in which the spacer is contracted according to the present invention according to M-M of FIG. 2B, and FIG.

As can be seen in Figure 2b and 3 and 4, the gap retainer 200 of the expansion joint device for the bridge according to the present invention is installed to be rotated in the horizontal direction on the first upper structure 10 side and the free end 211 At least one pair of the first link (210) having a. These first links 210 are provided with through holes 213 in the fixed end 212 and the free end 111, respectively. The first links 210 are first bolts 214 installed at the lower end of the first fixing member 110 installed at the edge of the first upper structure 10 through the through hole 213 of the fixed end 212. And is supported by the nut 215 is installed so as to rotate in the horizontal direction with the first bolt 214 as the rotation axis. When viewed from above, the first links 210 have a shape in which the free end 211 is bent at a predetermined angle rather than a straight line with respect to the fixed end 212.

A ring-shaped gap member 216 and a washer 217 are installed on the outer circumferential surface of the first bolt 214 between the two first links 210 and between the first link 210 and the nut 215. The end 214b is formed in the head 214a of the first bolt 214. This is to allow the first bolt 214 to stably support the bottom of the first fixing member 110.

The gap retainer 200 of the expansion joint device for bridges according to the present invention includes at least one pair of second links 220 installed on the second upper structure 20. The second links 220 are rotatably installed in the horizontal direction and have a free end 221. The second links 220 also have through holes 223 in the fixed end 222 and the free end 221, respectively. The second links 220 are second bolts 224 installed at the lower end of the second fixing member 120 installed at the edge of the second upper structure 20 through the through hole 223 of the fixed end 222. And is supported through the nut 225 is installed so as to rotate in a horizontal direction with the second bolt 224 as the rotation axis. When viewed from above, the second links 220 also have the free end 221 bent at a predetermined angle rather than a straight line with respect to the fixed end 222.

A ring-shaped gap member 226 and a washer 227 are installed on the outer circumferential surface of the second bolt 224 between the two second links 220 and between the second link 220 and the nut 225. A stage 224b is formed at the head 224a of the second bolt 220. This is for the second bolt 220 to stably support the bottom of the second fixing member 120.

The gap retainer 200 of the expansion joint device for a bridge according to the present invention includes at least one pair of third links 230. These third links 230 are provided with through-holes 233 at the intersections thereof with portions connected to the first and second links 210 and 220, respectively. The third links 233 are formed in the free ends 211 of the first link 210 and through holes 213 and 223 disposed in the free ends 221 of the second link 220 disposed diagonally thereto. The general hexagon head bolt 234b and the nut 235 are coupled to each other so as to be rotatable in the horizontal direction and cross each other. The third bolt 234 supporting the bottom surface of the rail 130 is inserted into the through hole 237 formed at the intersection of the third links 230, and the nut 235 is coupled at the lower end thereof. These third links 230 have their ends bent in opposite directions, respectively.

That is, when the first upper structure 10 and the second upper structure 20 gradually contract in the state shown in FIG. 3, the first bolt 210 moves to the left, and the second bolt 220 moves to the right. By moving, the interval between the first bolt 210 and the second bolt 220 is widened. Accordingly, the first links 210, the second links 220, and the third links 230 are rotated in the clockwise and counterclockwise directions based on the respective support points and the connection points thereof, respectively, as shown in FIG. 4. It is in a state. As shown in FIG. 4, when the first upper structure 10 and the second upper structure 20 gradually expand, the interval between the first bolt 214 and the second bolt 224 becomes narrower and smaller, and the first upper structure 10 and the second upper structure 20 become larger. The links 210, the second links 220, and the third links 230 are rotated based on the respective support points and the connection points in the reverse process as described above, and are brought into a state as shown in FIG. 3.

5 is an enlarged front view of the first bolt.

The first bolt 214 shown in FIG. 5 is fixed to the first upper structure 10 and serves to support the bottom surface of the first fixing member 210. The head 214a of the first bolt 214 is provided with a stage 214b to stably support the bottom of the first fixing member 210. The first bolt 214 may be integrally formed with the first fixing member 210, and in some cases, may be directly fixed only to the first upper structure 10 regardless of the first fixing member 210. . Since the first bolt 214 is the same as the second bolt 224 only if the direction thereof is changed, it may be used as the second bolt 224.

6 is an enlarged front view of the third bolt.

The third bolt 234 is coupled to the through hole 237 formed at the intersection of the third link 230 to support the bottom of the rail 130, the head 234a is larger and higher than the general bolt, The upper end may be fixed to the bottom of the rail 130 by welding, or may be manufactured integrally with the rail 130 in some cases.

As can be seen from the above description, the gap retainer of the expansion joint device for the bridge according to the present invention is simple in its construction and cushions the up and down direction, so that it does not break because it cushions the shock when passing through the vehicle. In addition, it has the advantage that the noise level is low and the height does not change according to the degree of expansion.

Although the present invention has been described using the embodiments of the present invention, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit of the present invention.

Claims (4)

A rail is provided between the first upper structure and the second upper structure, which are disposed to face each other, to support the wheels of the vehicle passing between the two upper structures while allowing the expansion and contraction of the two upper structures. In the gap retainer of the expansion joint for the bridge to allow the smooth passage between the two superstructures, At least one pair of first links rotatably installed in a horizontal direction toward the first upper structure and having a free end; At least one pair of second links rotatably installed in a horizontal direction toward the second upper structure and having a free end; And At least one connected to the rail at a portion crossing each other so as to be horizontally connected to the free end of the first link and the free end of the second link disposed in a diagonal direction thereof and intersecting with each other; Spacer retainer of the expansion joint for the bridge, characterized in that it comprises a pair of third links. The method of claim 1, wherein the first link and the second link has a shape in which the free end is bent to one side when viewed from above, and the third link has a shape in which both ends are bent in opposite directions to each other. Spacing of expansion joints for bridges. According to claim 1, wherein the pair of first links are provided with through holes at both ends so as to be rotatable around the same rotation axis toward the first upper structure, the pair of second links are through holes at both ends It is provided to be rotatable around the same axis of rotation of the second upper structure side, the pair of third links are provided with through holes at the intersections of both ends and the connection with the first, second links. The gap retainer of the expansion joint device for a bridge, characterized in that connected to each other by rotation. 4. The pair of first links of claim 1, wherein the pair of first links are disposed at a lower end of the first fixing member installed at an edge of the first upper structure and horizontally by a first bolt having a stage. Direction is rotatably supported, and the pair of second links are rotatably supported in a horizontal direction by a second bolt disposed at a lower end of the second fixing member installed at an edge of the second upper structure, and having a stage. The pair of third links are rotatably connected to each other by a third bolt installed at the intersection of the third link at the bottom of the rail member installed between the first fixing member and the second fixing member. Spacer for bridge expansion joints.