KR200241139Y1 - Expansion joint for connecting slabs of a bridge structure - Google Patents

Abstract

The present invention, a pair of vertical members disposed in parallel to each other at a predetermined interval between a pair of bridges connected to each other, a horizontal member coupled horizontally to the upper end of the vertical member, the vertical member and the horizontal An elastic joint apparatus for a bridge having an elastic member interposed between members, the elastic member comprising: a longitudinal portion bonded to inner wall surfaces of the vertical members; An upper horizontal part connecting the upper end of the vertical part; A closed loop is formed together with the upper horizontal part with a space between the upper horizontal part therebetween, and includes a dummy part in the shape of a wave disposed at a lower end of the horizontal member to prevent foreign matter from entering the bridge deck. It features. As a result, there is provided an expansion joint device for a bridge that can effectively prevent foreign matter from penetrating between the separation intervals while smoothly performing the stretching operation.

Description

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

The present invention relates to a bridge expansion joint device, and more particularly, to improve the structure of the elastic member interposed in 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 each 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.

8 is a longitudinal sectional view of a conventional expansion joint device. As shown in this figure, a conventional expansion joint device for bridges are coupled to the main plate material 110 and the main plate material 110, which are arranged to face each other at predetermined intervals between the bridge top plate, while the reinforcing bars are accommodated. It has a plurality of anchors 116 embedded in the bridge deck.

The main plate 110 has a horizontal member 113 arranged in parallel with the plate surface of the bridge top plate, and a vertical member 112 extending downward from the horizontal member 113. The inner edge of each horizontal member 113 disposed to face each other has a wave shape in which the valley portion and the top portion are repeatedly formed. An elastic member 130 is interposed between the vertical member 112 and the horizontal member 113 to assist the stretching operation of the pair of main plate members 110.

In the case of installing such expansion joints, first, the expansion joints are continuously installed along the longitudinal direction between the bridge decks, and then the steel bars are accommodated and welded to the anchor 116, and then the space between the bridge decks and the expansion joints. This is done by grouting.

At this time, the space between the horizontal member and the elastic member (this is called the 'spaced interval') may be left as an empty space without additional filling, in some cases, as shown in the figure, the sealing agent (S) Filled to prevent foreign matter from entering into the spaced interval between the horizontal member 113 and the elastic member 130.

By the way, in such a conventional expansion joint device for bridges, when the separation gap is left as an empty space, the expansion joint of the expansion joint device may not be smoothed due to the infiltration of sand, soil or other foreign matters, and the cleaning or the like. There is a problem that maintenance work is not easy.

In addition, when filling a predetermined sealing agent in the separation interval, since the operator must fill the sealing agent in the longitudinal direction of the horizontal member at the top of the horizontal member, not only the filling operation is difficult but also takes a relatively long time to fill the air There is a disadvantage in that it extends. In addition, after the filling, if the time elapses, the sealing agent may be solidified and separated from the separation interval, and the solidified sealing agent may protrude upward. In this case, too, the expansion and contraction of the expansion joint device is not smooth, and the problem that the maintenance work such as cleaning is not easy due to the infiltration of foreign matter at a spaced interval.

Accordingly, it is an object of the present invention to provide an expansion joint device for a bridge that can effectively prevent foreign matter from penetrating between spaced intervals while smoothly performing a stretching operation.

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

Figure 2 is a partially exploded perspective view of the bridge expansion joint according to Figure 1,

3 is a front view of FIG. 2;

Figure 4 is a front view of the expansion joint device for a bridge according to a second embodiment of the present invention,

5 is a front view of the expansion joint device for a bridge according to the third embodiment of the present invention,

Figure 6 is a front view of the expansion joint device for a bridge according to a fourth embodiment of the present invention,

7 is a front view of the expansion joint device for a bridge according to the fifth embodiment of the present invention,

8 is a longitudinal sectional view of a conventional expansion joint apparatus for bridges.

* Explanation of symbols for the main parts of the drawings

12: vertical member 13: horizontal member

16: anchor 19: connecting piece

30: elastic member 37: dummy portion

The object is, according to the present invention, a pair of vertical members disposed parallel to each other at a predetermined interval between a pair of bridge top plate connected to each other, a horizontal member horizontally coupled to the upper end of the vertical member, and An elastic joint apparatus for a bridge having a stretchable elastic member interposed between a vertical member and the horizontal member, the elastic member comprising: a vertical portion bonded to inner wall surfaces of the vertical members; An upper horizontal part connecting the upper end of the vertical part; A closed loop is formed together with the upper horizontal part with a space between the upper horizontal part therebetween, and includes a dummy part in the shape of a wave disposed at a lower end of the horizontal member to prevent foreign matter from entering the bridge deck. It is achieved by the expansion joint device for the bridge.

Here, at least a portion of the upper horizontal portion is curved. The lower horizontal portion interconnecting the lower end of the vertical portion and at least a portion of the curved portion may further include.

The vertical portion, the dummy portion, the upper side portion and the lower side portion may be integrally formed by compression molding and press vulcanization of rubber.

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 Figure 1, is coupled to the pair of main plate material 10 and the main plate material 10 spaced apart from each other at a predetermined interval in the area between the bridge top plate It has a plurality of anchors 16 embedded in the bridge deck.

The main plate material 10 is a pair of vertical members 12 arranged in parallel with each other at a predetermined interval, and the horizontal member 13 is horizontally coupled to the upper end of the vertical member 12 and 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 flange part 14 does not necessarily need to be formed.

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.

2 and 3, a plurality of anchors 16 protruding from the plate surface of the vertical member 12 and embedded in the bridge deck are formed outside the vertical member 12. Each anchor 16 is also formed of a metal material. The upper edge of the anchor 16 is formed with a plurality of reinforcing bars (17, 2, 3 and 4) cut down to accommodate the reinforcing bar. At this time, the receptacle receiving portion 17 'of the anchor 16' may be in the form of a through hole so that the reinforcing bar can be inserted as shown in FIG. In addition, as shown in FIG. 6, the anchor 16 ′ may be installed in the form of a long rod or a bent rod 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 another expansion joint device disposed adjacently. The connecting piece 19 is formed with a through hole 20 (see FIGS. 2, 3, and 4) in the plate surface so that the bolt can be inserted. However, the connecting piece 19 'may be recessed downward to accommodate the bolt, as shown in FIG. In addition, the connecting piece 19 'may be recessed toward the inner side from the side as shown in FIG.

The hollow elastic member 30 is disposed between the vertical member 12 and the horizontal member 13 so that the pair of main plates 10 can be stretched and contracted with each other. The elastic member 30 includes a vertical portion 31 adhered to the inner wall surface of each vertical member 12, an upper horizontal portion 33 and a lower horizontal portion 35 connecting upper and lower ends of the vertical portion 31. And a dummy portion 37 disposed at a lower end of the horizontal member 13 with a space S between the upper horizontal portion 33 interposed therebetween to prevent foreign matter from entering the bridge top plate.

At least some sections of the upper side 33 and the lower side 35 are curved. That is, the upper horizontal portion 33 has an almost 'Ｗ' cross-section wrinkle (in FIGS. 2, 3, and 5) formed in a zigzag shape. In addition, the lower horizontal portion 35 is formed with wrinkles (see Figs. 2, 3 and 4) bent upwards.

At this time, the wrinkles formed in the upper horizontal portion 33 may form a 'Ｗ' cross-sectional shape, as shown in the figure, in some cases, 'U' cross-sectional shape (see FIGS. 4 and 6) or inverse It is also possible to achieve other curves that are curved in the 'U' cross-section and in the free form. In addition, as illustrated in FIG. 7, the upper horizontal portion may not be formed.

Wrinkles formed on the lower side 35 may also form another curved shape. In addition, the lower horizontal portion 35, as shown in Figure 5 and 6, may not be integrally formed on the elastic member (30).

The dummy portion 37 together with the upper horizontal portion 33 forms a closed loop and has a wavy shape. This, along with the wrinkles formed in the upper side portion 33 and the lower side portion 35 serves to help the expansion and contraction of the main plate material 10 as well as to prevent foreign substances, including water from the bridge top plate to enter the lower side. For sake.

On the other hand, the vertical portion 31, the dummy portion 37, the upper side portion 33 and the lower side portion 35 forming the elastic member 30 are integrally formed by compression molding of rubber or press vulcanization of rubber. Can be formed.

Extrusion is a molding method in which a raw material is supplied to a predetermined extruder, pushed out of a mold, and converted into a continuous body having a uniform cross section, and is not only suitable for molding polyethylene and vinyl chloride resins, but also the elastic member 30 of the present invention. Using a rubber used as a material of the) can be widely used as a molding method to have a certain shape and specifications. Extrusion may have the disadvantage that the shape may be somewhat deformed, but it is possible to mold the shape of the recess without requiring special technology, and the manufacturing cost is relatively low and the equipment is simple. have.

Press vulcanization is a method of compressing a raw material into a predetermined mold at a predetermined time and a predetermined temperature, so that the production efficiency may be relatively lower than that of the extrusion molding. However, the press vulcanization has the advantage of precisely forming a desired shape and specification. .

Therefore, the elastic member 30 according to the present invention, can be molded by the extrusion molding or press vulcanization, etc. according to the production conditions and other conditions. At this time, when the elastic member 30 is molded by extrusion of rubber, a support part (not shown) may be formed in the spaced space S in order to maintain the shape during extrusion.

The elastic member 30 having such a configuration is vertical by applying an adhesive to the vertical member 12 and the horizontal member 13, and then vulcanizing and adhering at least 50 minutes while applying pressure while heating to approximately 130 to 150 °. It may be bonded between the member 12 and the horizontal member 13.

As such, in the present invention, the dummy part 37 is integrally formed on the elastic member 30 to be adhered between the vertical member 12 and the horizontal member 13 to smoothly expand and contract the separation space S. Ingress of foreign matter can be effectively prevented.

As described above, according to the present invention, there is provided an expansion joint device for a bridge that can effectively prevent foreign matter from penetrating between the separation intervals while performing the expansion and contraction smoothly.

Claims (5)

A pair of vertical members disposed parallel to each other at a predetermined interval between the pair of bridged upper plates connected to each other, a horizontal member horizontally coupled to an upper end of the vertical member, and interposed between the vertical member and the horizontal member In the expansion joint device for a bridge having a flexible elastic member, The elastic member, Vertical sections bonded to inner wall surfaces of the vertical members; An upper horizontal part connecting the upper end of the vertical part; A closed loop is formed together with the upper horizontal part with a space between the upper horizontal part therebetween, and includes a dummy part in the shape of a wave disposed at a lower end of the horizontal member to prevent foreign matter from entering the bridge deck. Extension joint device for bridges characterized in that. The method of claim 1, At least a portion of the upper horizontal portion is a bridge expansion joint characterized in that the curved. The method of claim 1, And a lower horizontal part interconnecting the lower end of the vertical part and having at least some sections curved. The method according to any one of claims 1 to 3, And said vertical portion, said dummy portion, said upper side portion and said lower side portion are integrally formed by compression molding of rubber. The method of claim 4, wherein And said vertical portion, said dummy portion, said upper side portion and said lower side portion are integrally formed by press vulcanization of rubber.