KR200241142Y1 - Expansion joint for connecting slabs of a bridge structure - Google Patents

Abstract

The present invention is a bridge expansion and contraction apparatus having a pair of main plate material spaced apart from each other at a predetermined interval in the area between the bridge top plate and the inner rubber member provided in the main plate material, the vertical member and the horizontal An end rubber member is further provided at both ends of the member, and at least some sections of the end rubber member are provided with sealing ribs for hermetically sealing a contact portion with the other end rubber member. Accordingly, there is provided a bridge expansion joint device for preventing foreign substances, including water, from entering into a contact portion between the bridge expansion joints connected to each other.

Description

Expansion joints for bridges {EXPANSION JOINT FOR CONNECTING SLABS OF A BRIDGE STRUCTURE}

The present invention relates to a expansion joint device for a bridge, and more particularly, to improve the structure of interconnecting the bridge expansion joint device.

The structure of the bridge expands and contracts with temperature changes and loads. Therefore, the upper structures of bridges constructed over a certain length have a proper spacing (generally called 'gap') for a certain length. The expansion joints are installed at intervals between the upper structures, and the expansion joints prevent damage to the upper structures of the bridge, and the vehicle runs smoothly.

9 is a perspective view showing a connection structure of a conventional bridge expansion joint device. As shown in this figure, the bridge expansion joint is installed between the bridge top plate and when the width of the upper plate is longer than the length of the expansion joint, the expansion joint is interconnected in the longitudinal direction.

A protruding portion 153 is formed at one end of the expansion joint device, and an insertion groove 151 is formed at the other end so that the protruding portion 153 can be inserted. Accordingly, after positioning the pair of expansion joints so that the protrusions 153 can be inserted into the insertion groove 151, the bolt 121 is put into the coupling piece 119 provided on the side of the expansion joint, nut Use 125 to interconnect expansion joints.

By the way, in the conventional expansion joints connected by this method, there is a problem of reducing the life of the structure by the inflow of foreign matter, water, etc. to the contact portion of the expansion joint connected to each other to corrode the structure.

Therefore, an object of the present invention is to provide a bridge expansion joint device that can prevent foreign substances, including water into the contact portion between the bridge expansion joint connected to each other.

1 is a perspective view of a bridge expansion joint according to an embodiment of the present invention,

2 is a partially cutaway perspective view of FIG. 1;

3 is an enlarged view illustrating main parts of FIG. 2;

Figure 4 is a perspective view showing a connection structure of the expansion joint of Figure 1;

5A and 5B are cross-sectional views taken along line A-A and B-B in a coupled state of FIG. 4,

Figure 6 is a perspective view showing a connection structure of the expansion joint according to another embodiment of the present invention,

Figure 7 is a perspective view showing a connection structure of the expansion joint according to another embodiment of the present invention,

8 is a perspective view of the expansion joint device for a bridge according to another embodiment of the present invention,

9 is a perspective view showing a connection structure of a conventional bridge expansion joint device.

* Explanation of symbols for the main parts of the drawings

12: vertical member 13: horizontal member

16: anchor 19: connecting piece

50: internal rubber member 60: end rubber member

62: sealing rib 62a: sealing rib

According to the present invention, in the expansion joint device for a bridge having a pair of main plate material spaced apart from each other at a predetermined interval in the area between the bridge top plate and the inner rubber member provided in the main plate material, And an end rubber member provided at both ends of the vertical member and the horizontal member, wherein at least some sections of the end rubber member are provided with sealing ribs for hermetically sealing a contact portion with the other end rubber member. Achieved by expansion joints for bridges.

Here, the sealing rib is preferably formed continuously along the circumferential direction of the end rubber member so as to correspond to the horizontal member and the vertical member.

The inner rubber member, the end rubber member and the sealing rib may be integrally formed.

And, it is preferable that the sealing ribs formed on the pair of end rubber members connected to each other are arranged at a step with each other.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention, the same reference numerals are assigned to the same configuration.

Bridge expansion joint according to the present invention, as shown in Figures 1 to 3, a pair of main plate material 10 and the main plate material 10 which are spaced apart from each other at predetermined intervals in the area between the bridge top plate, It has a plurality of anchors 16 coupled to and embedded in the bridge deck.

The main plate material 10 is a pair of vertical members 12 arranged in parallel to each other at a predetermined interval, and the horizontal member 13 is horizontally coupled to the upper end of the vertical member 12 is disposed along the plate surface direction of the bridge top plate ) And a flange portion 14 which is horizontally coupled to the lower end of the vertical member 12. Here, the flange portion 14 may be welded to the side of the vertical member 12. In addition, the vertical member 12 and the flange portion 14 may not be formed, and the main plate material 10 may be made of rubber.

The main plate 10 may be formed by cutting steel such as an H beam, or may be formed by welding the vertical member 12, the horizontal member 13, and the flange 14 made of a metal material to each other. The inner edge of the horizontal member 13 has a continuous wave shape.

A plurality of anchors 16 protruding from the plate surface of the vertical member 12 and embedded in the bridge top plate are formed outside the vertical member 12. Each anchor 16 is also made of a metal material and welded to the vertical member 12. The upper edge of the anchor 16 is formed with a plurality of reinforcing bar 17 to accommodate the reinforcing bar. In this case, unlike the shape of FIGS. 1 to 4, the anchor 16 ′ may be in the form of a through hole so that the reinforcing bar 17 ′ may be inserted into the reinforcing bar 17 ′. . In addition, as shown in Figure 7, the anchor (16 ＂) may be provided in the form of a long rod, or bent rods from the plate surface of each vertical member (12).

The connecting piece 19 is provided at both ends of the vertical member 12 so as to be mutually fastened with the main plate material 10 of the other expansion joint apparatus 1a arranged adjacently. The connecting piece 19 is formed with a through hole 20 in the plate surface so that the bolt 21 can be inserted. However, the connecting piece 19 'may be recessed downward to accommodate the bolt 21, as shown in FIG. In addition, as shown in FIG. 7, the connecting piece 19 'may be recessed toward the inner side from the side surface. A male screw portion 23 is formed at the end of the bolt 21. Accordingly, when the bolt 21 is accommodated in the connecting piece 19, the nut 25 is fastened to the male screw portion 23 so that the expansion joints 1 and 1a can be coupled to each other.

Rubber members 50 and 60 are provided on the pair of main plate materials 10 so that the pair of main plate materials 10 can be stretched and contracted with each other. The rubber members 50 and 60 are installed at both ends of the inner rubber member 50 which is stretched and interposed between the vertical member 12 and the horizontal member 13, and the vertical member 12 and the horizontal member 13. End rubber member 60 is included.

The inner rubber member 50 includes a vertical portion 31 bonded to the inner wall surface of the vertical member 12, and an upper side portion 33 and a lower side portion connecting both ends of the vertical portion 31 from above and below, respectively. Has 35.

The upper horizontal portion 33 is formed of a substantially 'Ｗ' cross-section wrinkles formed in a gentle zigzag shape. The lower horizontal portion 35 is formed with wrinkles gently bent upwards.

Wrinkles formed on the upper horizontal portion 33 may form a 'Ｗ' cross-sectional shape (see Figs. 1 to 4), in some cases, 'U' cross-sectional shape (see Fig. 6) or inverse 'U' cross-sectional shape And other curves curved freely. Wrinkles formed on the lower horizontal portion 35 may also form another curved shape, and as shown in FIG. 6, the lower horizontal portion may be open without forming.

The inner rubber member 50 is applied by applying an adhesive to the vertical member 12 and the horizontal member 13, and then vulcanized and applied for 50 minutes or more while being heated to approximately 130 to 150 °.

A predetermined space is formed between the upper horizontal part 33 and the horizontal member 13. The sealing member 40 is press-fitted into the spaced space to fit the spaced space to prevent foreign matter from entering. The sealing member 40 may be made by extrusion molding of rubber or press vulcanization. At this time, in the case of molding the sealing member 40 by extrusion molding, the support portion 41 may be formed in the middle so as to maintain the shape during extrusion.

Meanwhile, end rubber members 60 are provided at both ends of the vertical member 12 and the horizontal member 13. The end rubber member 60 may be integrally formed with the internal rubber member 50 and formed at the ends of the horizontal member 13 and the vertical member 12, and may be formed separately from the internal rubber member 50.

In such a section of the plate surface of the end rubber member 60, a sealing rib 62a is formed to keep the contact surface with the end rubber member 60a formed in the other expansion joint device 1a airtight. At this time, each of the sealing ribs 62, 62a formed on the pair of end rubber members 60, 60a which are connected to each other is preferably arranged at a step with each other, as shown in FIG.

In the present invention, the sealing ribs 62 and 62a are formed in a section or continuously along the circumferential direction of the end rubber members 60 and 60a so as to correspond to the horizontal member 13 and the vertical member 12. 50 and the end rubber members 60, 60a are integrally formed at the time of molding. However, the sealing rib 62 may be manufactured separately from the inner rubber member 50 and the end rubber member 60 and attached to the end rubber members 60 and 60a.

The process of connecting the pair of expansion joints 1 and 1a for the bridge by such a configuration will be described with reference to FIGS. 4 and 5 as follows.

First, the sealing member 40 is press-fitted into the spaced space between the horizontal member 13 and the inner rubber member 50, and then the pair of expansion joints 1, 1a are disposed in the longitudinal direction. Then, the pair of bridge expansion joints 1 and 1a are mutually tightened by using the bolt 21 and the nut 25.

Then, the sealing ribs 62 and 62a, which are stepped on each other, are press-fitted between the contact portions between the expansion joints 1 and 1a to keep the area hermetic, thereby effectively preventing foreign substances, including water and the like, from flowing therebetween. You can block.

Thus, in the present invention, by providing the sealing ribs (62, 62a) in the end rubber members (60, 60a), foreign matter containing water as a contact portion of the pair of expansion joints (1, 1a) for bridges that are mutually coupled This can effectively prevent the inflow.

As described above, according to the present invention, there is provided a expansion joint device for a bridge to prevent the inflow of foreign substances including water to the contact portion between the bridge expansion joint connected to each other.

Claims (4)

In the expansion joint device for a bridge having a pair of main plate material spaced apart from each other at a predetermined interval in the area between the bridge top plate and the inner rubber member provided in the main plate material, Further comprising an end rubber member installed at both ends of the vertical member and the horizontal member, And at least some sections of the end rubber member are formed with sealing ribs for hermetically sealing a contact portion with the other end rubber member. The method of claim 1, And the sealing rib is continuously formed along the circumferential direction of the end rubber member so as to correspond to the horizontal member and the vertical member. The method of claim 1, And the inner rubber member, the end rubber member and the sealing rib are integrally formed. The method according to any one of claims 1 to 3, Each sealing rib formed in a pair of end rubber members which are connected to each other, the expansion joint device for a bridge, characterized in that arranged at a step with each other.