KR20010068280A - Finger-type bridge expansion joint and repairing method for using the same - Google Patents

Abstract

PURPOSE: An expansion joint of a bridge and a maintaining method thereof are provided to maintain the expansion joint without breaking a non-shrunken concrete by inserting an expansion rubber in a contacting groove of the expansion joint. CONSTITUTION: An expansion joint of a bridge comprises an inner supporting steel(1), an expansion rubber(3), an upper covering plate(4), a horizontal and an inclined circular steels and a bolt combining member. The upper covering plate and the damaged expansion rubber are removed. Foreign substances inside the expansion joint are removed. A new expansion rubber is inserted in a contacting groove of the inner supporting steel. The upper covering plate is combined with the inner supporting steel through a bolt. Thereby, maintenance is finished.

Description

Bridge-type bridge expansion joint and repairing method for using the same}

The present invention relates to an expansion joint device for bridges and a repair method thereof. More specifically, the non-concrete concrete, which is placed on both sides of the expansion joint device and the expansion joint device of the present invention to fix the expansion joint device to the bridge top plate, is separated by an upper key of the inner supporting steel constituting the expansion joint device. The present invention relates to a bridge expansion joint device capable of repairing expansion joint devices without shredding non-concrete concrete, and a repair method thereof.

As the bridge structure expands and contracts according to temperature change and load, the upper structure of the bridge installed over a certain length is installed at appropriate intervals to prevent damage to the upper structure of the bridge due to expansion and contraction. The device that bridges the gap of the upper structure of the bridge is the expansion joint device for bridges, and the inner support steel 12, which is integrated with the surface support steel 11, which is generally matched to the bridge, the number of surfaces of the bridge and foreign matter through the expansion joint device Non-concrete concrete 14 which is placed on both sides of the expansion joint device to fix the expansion rubber 13 and the expansion joint device which are installed by heat-sealing or adhesive material between the inner supporting steels so as not to flow to the lower part of the bridge. It is composed of In the conventional expansion joint device, as shown in FIG. 1A, the inner support steel and the elastic rubber 13 are damaged and dropped earlier than the inner support steel and the non-concrete concrete due to traffic load, expansion or contraction of a bridge, and the like. There is a problem in that the surface water introduced into the expansion joint device flows into the lower portion of the bridge and adversely affects the girder 16, the bridge device 17, and the bridge 18 of the bridge. Therefore, in order to repair the expansion joints in which the expansion rubber is damaged, all the expansion joints are replaced after breaking and cutting all of the non-concrete concrete 14 and the inner reinforcing bars 15 placed on both sides of the expansion joint. There is a problem that the repair air of the expansion joint device is long, the work process is complicated, and it is uneconomical. In addition, as shown in FIG. 1B, in the case of the expansion joint device in which the internal support steel 19 and the expansion rubber 13 are separated from each other, the non-concrete concrete installed on both sides of the expansion joint device does not have to be broken. There is an advantage, but there is a problem in that it is difficult to repair work depending on the width of the bridge because it is installed while pushing the expansion rubber 13 installed between the inner support steel in the expansion joint.

An object of the present invention is to separate the non-concrete concrete placed on both sides of the expansion joint device and the expansion joint device with the upper key formed on the inner support steel of the expansion joint device of the present invention to repair the expansion joint device without shredding the non-concrete concrete It is to provide a new expansion joint device for bridges and its repair method.

Another object of the present invention is to install the expansion rubber in the connection groove of the expansion joint without installing the expansion rubber next to the expansion joint device can be easily repaired damaged expansion joint even if the length of the bridge To provide expansion bridges for bridges and their repair methods.

1A and 1B are elevation views of a bridge in which a conventional expansion joint and a conventional expansion joint are installed.

2A is a perspective view of the expansion joint device of the present invention.

Fig. 2B is an elevational view of the bridge deck provided with the expansion joint of the present invention.

3 is a coupling diagram of the expansion joint device of the present invention.

4 is a perspective view of the elastic rubber;

<Short description of the symbols in the drawings>

1: expansion joint (finger type) 2: internal supporting steel

3: Extension rubber (snake head) 4: Upper cover plate

5: horizontal circular steel 6: inclined round steel

9: bolt fastener 10: non-concrete concrete

14: connection groove of internal supporting steel

The present invention will be described with reference to the drawings.

The expansion joint device of the present invention is composed of the inner support steel (2), the upper cover plate (4) and the expansion rubber (3).

As shown in FIG. 2A, the inner supporting steel material 2 is a T-shaped member which serves to distribute the traffic load transmitted from the horizontal cover of the upper cover plate 4 and the upper cover plate 4, and the left and right two are left and right. It is installed symmetrically and consists of a flange 2 '', an upper key 2 'and a vertical web 2' ''. Hereinafter will be described based on the internal support steel (2) installed on the right.

The flange 2 '' is a rectangular plate, and a concave oval connection is formed at the left end of the flange 2 '' so that the head of the elastic rubber 3 described later in the longitudinal direction of the flange can be inserted and installed. A groove 14 is formed, and a support jaw 2 '' '', which is a rectangular groove in the longitudinal direction of the flange, is formed below the right end of the flange 2 ''. The support jaw 2 ″ ″ is provided with an inclined round steel 5 extending into the non-concrete concrete 10 which is placed on the right side of the inner supporting steel 2. The inclined round steel 5 is installed in a plurality at regular intervals in the longitudinal direction of the flange (2 ″) to be inclined downward so that the internal support steel (2) does not flow.

The upper key 2 'is a rectangular member formed vertically above the right end of the flange 2' ', and the non-concrete concrete 10 and the upper cover plate 4 filled in the right side of the inner supporting steel 2 are formed. It serves to separate. Therefore, there is no need to crush the non-concrete concrete when the expansion joint is being repaired, so the repair work can be completed simply and quickly.

The vertical web 2 '' 'is a member for supporting the flange 2' ', and the horizontal circular steel 5 protrudes outwardly horizontally in the middle of the vertical web. The horizontal circular steel 5 extends into the non-concrete concrete 10 placed on the right side of the inner supporting steel 2 to fix the position so that the inner supporting steel 2 does not flow up, down, left and right by traffic load. It serves as a plurality and is installed in a line in the longitudinal direction of the flange. In the center of the upper surface of the flange 2 ″, a plurality of bolt holes 7 are formed in a row in the longitudinal direction of the flange. In the middle of both ends of the vertical web (2 '' ') is formed a bolt fastener (9) of the horizontal' c 'shape, the bolt fastener (9) is for bolt coupling with other expansion joint device.

The upper cover plate 4 is composed of a plate-shaped support plate 4 'and a row of teeth 4' 'formed on the side of the support plate 4', and two sheets are symmetrically supported so that the tooth rows are engaged. The steel (2) is coupled to the upper surface of the bolt, and is installed in the same grade as the bridge top of the bridge so as not to interfere with the vehicle driving. Hereinafter will be described based on the upper cover plate 4 installed on the right side.

The support plate 4 ′ is a rectangular plate, and a bolt hole 7 capable of fixing the upper cover plate 4 to an upper surface of the flange 2 ″ of the inner supporting steel 2 has a flange 2 ″. A plurality of lines are formed in a line in the longitudinal direction, and a triangular coupling groove 8 is formed at one end to be concave at both ends for coupling with the upper cover plate 4 of the other expansion joint at both ends, and at the other end, The engaging projection 8 'of the phase is formed convexly. In addition, the upper surface of the support plate is formed with a V-shaped groove in the longitudinal direction of the flange so that rain water can flow along.

The tooth row 4 ″ is for absorbing the stretch amount of the bridge deck and may be manufactured in a triangular, circular or rectangular shape.

Extension rubber (3) is a U-shaped member consisting of a head and a body. The inside of the head portion is hollow (3 '' ') can be easily stretched, the inside of the body and the head portion of the elastic rubber (3) is provided with a reinforcing material knitted in the form of a fiber material. The head of the expansion rubber is inserted into the connection groove 14 of the inner support steel (2) and fixed and the upper cover plate (4) is fixed to the flange (2 '') of the inner support steel (2) (3) is crimped so that surface water and foreign substances flowing from the upper part of the expansion joint are not allowed to flow into the lower part of the expansion joint. On the upper surface of the head of the elastic rubber, a plurality of protrusions 3 inclined in a direction opposite to the direction in which the elastic rubber is inserted into the connecting groove 14 so as not to be easily removed after being inserted into the connecting groove 14 of the inner supporting steel 2. '') Is installed on the surface.

The repairing method of the expansion joint device of the present invention removes the bolts of the upper cover plate 4 of the expansion joint device of the present invention installed to face each other between the connecting portions of the upper plate which is the bridge upper structure, the lower surface of the upper cover plate (4) Removing the foreign matter formed in the anticorrosive treatment; After removing the existing elastic rubber installed between the connection grooves 14 of the internal support steel 2 of the expansion joint device, the connection groove 14 of the internal support steel (2), the upper portion of the flange (2 '') Removing and anticorrosive treatment of the foreign matter on the inner side of the upper key 2 'of the face and the flange 2' '; Flange (2 '' of the inner support steel 2, the lower surface of the upper cover plate 4, which is the portion where the connecting groove 14 and the upper cover plate 4 and the inner support steel 2 of the expansion joint device abuts) Caulking the upper surface and the inner side of the upper key 2 'of the flange 2' '; Installing new expansion rubber (3) in the connection groove (14) of the expansion joint; The anticorrosive upper cover plate (4) is installed between the upper key (2 ') of the inner supporting steel (2) and then fastened with bolts to complete the repair work.

The bridge provided with the expansion joint of the present invention removes only the bolt fixing the upper cover plate 4 of the expansion joint without breaking the non-concrete concrete 10 placed on the left and right sides of the expansion joint. After separating the upper cover plate 4, the foreign substances formed on the lower surface of the upper cover plate 4 by grinding to clean and clean, after the anti-corrosion treatment to prevent rust. If the top cover plate 4 is made of an alloy steel that does not rust, it is not anticorrosive.

After the upper cover plate 4 is removed, the existing elastic rubber installed in the connecting groove 14 of the inner supporting steel 2 is removed, and then the upper surface of the flange 2 '' of the inner supporting steel 2, the inside After removing the foreign substances in the inner side of the upper key (2 ') of the support steel (2) and the connecting groove (14) of the internal support steel (2) in which the elastic rubber (3) is installed by grinding to clean and then Do not rust after. If the internal support steel (2) is made of an alloy steel that is not rusted, the anticorrosive treatment is not performed.

After removing the existing elastic rubber, the connection groove 14 of the internal supporting steel 2, which is the portion where the elastic rubber abuts, the upper surface of the flange 2 '' of the internal supporting steel 2, the internal supporting steel 2 The caulking material is applied to the inner side of the upper key 2 'of the c) to prevent the surface water of the expansion joint from leaking down the expansion rubber through the existing expansion rubber.

After the caulking treatment, before the caulking material is solidified, a new expansion rubber 3 is inserted and installed along the connection groove 14 of the inner supporting steel 2 from above, and then the anticorrosive upper cover plate 4 is internally supported by bolts. The repair work is completed by fastening to the steel (2).

The expansion joint device and the repairing method of the present invention remove the damaged existing expansion rubber after removing the upper cover plate of the expansion joint without breaking the non-concrete concrete placed on both sides of the expansion joint device, and simplify the new expansion rubber. The installation can be completed quickly. Therefore, the maintenance work air can be shortened to open the traffic quickly, further reduce the construction cost and long-term bridge maintenance costs.

Claims (5)

Stretch rubber having a cross-section is U-shaped, both ends of the U-shaped cross-section is formed in the longitudinal direction of the hollow hollow body portion is formed in the center is stretchable; T-shaped member consisting of a flange 2 '' and a vertical web 2 '' ', two of which are symmetrically installed, and the elastic rubber in the longitudinal direction of the flange at the end of the opposite inner flange 2' '. A connection groove 14 into which the head of (3) is inserted is formed in a concave shape, and at the lower end of the outer flange 2 '', a support jaw 2 &quot; Is formed, a square upper key 2 'is formed in the longitudinal direction of the flange on the upper end surface of the outer flange 2' ', and the flange is centered on the upper surface of the outer flange 2' '. Internal supporting steels (2) formed with a plurality of bolt holes (7) in a row at regular intervals in the longitudinal direction thereof; And, A square plate-shaped support plate 4 'and a row of teeth 4 &quot; formed on a longitudinal side of the support plate 4', and the teeth row 4 &quot; ) Are symmetrically arranged so that they face each other, and a plurality of bolt holes are formed in the center of the support plate 4 ', each coinciding with the bolt holes provided in the flange, and concave at one of the longitudinal angular ends of the flange. Two upper cover plates 4 having a triangular coupling groove 8 formed therein, and a triangular coupling protrusion 8 'corresponding to the coupling groove 8 formed on the other side thereof; Expansion joint device for a bridge, characterized in that consisting of. According to claim 1, A plurality of inclined circular steel (6) formed to be inclined downward outward from the support jaw (2 '' ') of the two inner support steel (2); Four bolt fasteners (9) installed at both ends of the two inner supporting steels (2) outwardly in the center of the vertical web (2 '' '); And, A plurality of horizontal circular steels 5 installed at regular intervals horizontally outward from the middle of the vertical webs 2 '' 'of the two inner supporting steels 2; The expansion joint device for a bridge, characterized in that is further added. The reinforcing member of claim 1, wherein a plurality of protrusions 3 '' are formed on the upper surface of the head of the elastic rubber 3 in the longitudinal direction of the elastic rubber, and the fiber material is knitted in the shape of the inside of the elastic rubber. Expansion joint device for a bridge, characterized in that inserted. The expansion joint device for a bridge according to claim 1, wherein the tooth row (4 '') of the upper cover plate (4) is one of a triangle tooth, a square tooth or a semi-circular tooth. After removing the bolt of the upper cover plate 4 of the expansion joint device of claim 1 installed to face each other between the connecting portion of the upper plate which is the bridge upper structure, to remove foreign substances formed on the lower surface of the upper cover plate 4 step; Removing the existing elastic rubber installed between the connection grooves 14 of the expansion joint device, removing foreign substances inside the expansion joint device, and anticorrosive treatment; Applying a caulking material to a portion where the connecting groove 14 and the upper cover plate 4 and the inner supporting steel material 2 of the expansion joint device come into contact with each other; Installing a new expansion rubber (3) between the connection groove (14) of the expansion joint device; And, Installing the anticorrosive upper cover plate (4) on the inner support steel (2) to complete the repair work by fastening bolts; Expansion joint repair method, characterized in that consisting of.