KR101569387B1 - Connecting apparatus for expansion joint of bridge and method connecting for expansion joint of bridge therof - Google Patents

Abstract

Disclosed is an expansion joint connecting device for a bridge. The purpose of the expansion joint connecting device for a bridge according to the present invention is to connect closed-type or open-type expansion joint devices for a bridge to each other in a longitudinal direction. The expansion joint connecting device for a bridge includes: a lower mold installed in a lower frame, wherein a first heating means is embedded inside; a pressing member penetrating through an upper frame installed at a predetermined distance to the lower frame by lateral frames; and an upper mold including a second heating means embedded inside and joined to the lower part of the pressing member to correspond to the lower mold inside a space between the lower and upper frames. The expansion joint connecting device for a bridge is characterized by butt-welding each vertical member of the expansion joint device and the ends of finger members from which rubber attached to the tip parts of the finger members is removed, positioning the welded joints between the upper and lower molds, placing rubber for vulcanizing and adhering on the joints, and vulcanizing and adhering the rubber for vulcanizing and adhering to the joints to waterproof the joints while the upper and lower molds heat and press the rubber for vulcanizing and adhering to the joints by operating the pressing member. The expansion joint connecting device for a bridge according to the present invention is capable of not only continuously connecting the expansion joint devices manufactured at a predetermined size in a longitudinal direction to correspond to a width of an upper plate of a bridge, but also providing an effect of maintaining the waterproofing of the joints by connecting the rubber of the joints of the expansion joint devices connected to each other in the vulcanizing and adhering method.

Description

TECHNICAL FIELD [0001] The present invention relates to an expansion joint for a bridge,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a telescopic joint for a bridge and a telescopic joint for a bridge using the telescopic joint. More particularly, the telescopic telescopic joint for a bridge can be rapidly and easily connected continuously, The present invention relates to an expansion joint connection device for a bridge capable of preventing water leakage and preventing water leakage, and a connection method for a flexible joint for a bridge using the same.

Generally, the top plate of the bridge expands or contracts due to temperature changes and the like. Therefore, the top plate of the bridge constructed over a certain length is installed at a distance from the neighboring top plate in consideration of the contraction and expansion of the top plate. Between the roofs of such bridges, a telescopic joint is installed for the purpose of reducing noise, improving ride quality, and preventing foreign matter or rainwater from flowing between the top plates.

Such expansion joint devices include NB type, TF type, monocell type, new monocell type, and finger joint. One of them is a finger joint. This is because a plurality of fingers and grooved fittings formed in a wave-like shape are opposed to each other and each finger on one side is inserted into each groove on the other side so that even if the bridge top plate is contracted and the gap between the top plates becomes large, So that it can pass through.

Such a telescoping joint device for bridges is a conventional telescoping joint device for a bridge according to the related art, which is arranged in the longitudinal direction between the upper plates along the width direction of the bridge top plate, Korean Utility Model Registration No. 20-0167591 (public announcement: Feb. 1, 2000).

Such an expansion joint device for bridges comprises a pair of main plate members facing each other with a predetermined space between a pair of bridge top plates mutually connected to each other and a main plate member extending laterally in the longitudinal direction from the main plate member, And a plurality of anchor portions each of which is embedded in each of the pair of main plates, wherein each of the plurality of anchor portions includes a vertical portion which is respectively adhered to the opposite inner wall surfaces of the main plate members, an upper horizontal portion and a lower horizontal portion which interconnect the vertical portions at upper and lower ends, A first rubber member having at least one wrinkle portion formed in each of the lateral sections, and a second rubber member integrally fixed to the end portions of the pair of main plate members and being engaged with each other between the other main plate members Respectively.

Such an expansion joint device is constructed to have a predetermined length (generally 1.8 m) as shown in FIG. 10 and to be connected to each other so as to match the width of the bridge at the construction site. That is, the connecting pieces provided at the respective end regions of the supporting portions are fastened with bolts and nuts, and the two expansion joints are connected to each other.

However, when the two expansion joints are continuously connected in the longitudinal direction as described above, there is a problem in that the connecting portions of the expansion joint devices are not closely contacted and rainwater flows in.

In this way, when the rainwater flows into the joint between the joints of the expansion joints, the bridge of the bridge can be corroded and damaged.

Korean Registered Utility Model No. 20-0167591 (Notice: February 01, 2000)

It is an object of the present invention to provide an expansion joint for a bridge capable of continuously and easily connecting a stretch joint device for a bridge made of a certain length to a length equal to the width of an upper plate of the bridge, Thereby providing a connecting device.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. It can be understood.

The above object is achieved according to the present invention by connecting a closed type expansion joint for bridges to each other in the longitudinal direction, comprising: a lower mold installed with a first heating means and installed in a lower frame; A pressing member penetrating the upper frame installed at a predetermined distance from the lower frame by the side frames; An upper mold coupled to a lower end of the pressing member so as to correspond to the lower mold in a space formed between the lower frame and the upper frame with a second heating means installed therein; A support frame provided on both sides of the lower frame to support the expansion joints to be connected to each other at both sides of the lower frame horizontally and to have movement rollers for moving the horizontal joints; And an inner mold device inserted into the interior of the expansion joint device to support the upper mold and the lower mold when the upper mold is operated to be pressed, the inner mold device being provided on one side of the support frame, The vertical members of the coupling device and the end portions of the finger members are welded together and then connected to each other. Then, the welded joints are positioned between the upper mold and the lower mold, and the upper mold and the lower mold are supported And the upper mold and the lower mold pressurize the vulcanization-bonding rubber while heating the rubber, so that the connection portion is waterproofed Wherein the connecting portion is vulcanized and adhered to the connecting portion.

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The lower mold may be installed in a mounting portion formed at the center of the lower frame, but may be installed so as to protrude more than the surface of the lower frame.

The pressing member may be a screw rod having a handle, or a pressurizing cylinder that operates the piston rod by hydraulic pressure or pneumatic pressure.

The inner mold apparatus includes an insertion cylinder configured to be operated by hydraulic pressure or air pressure to operate the insertion piston rod forward and backward and to be installed horizontally on one side of the support frame; Wherein the piston rod is inserted into the interior of the expansion joint when the insertion piston rod is advanced, and when the upper mold is pressurized, the upper mold and the lower mold are pressed by hydraulic or pneumatic pressure, And an inner mold having a movable mold for supporting the upper mold and a fixed mold for supporting the lower mold, the mold being opened in a mold direction.

The flow mold and the stationary mold may further include a third heating means.

Wherein the fixed die is provided with an inner cylinder operated by pneumatic or hydraulic pressure and a piston rod of the inner cylinder is coupled to the flow mold so that when the inner mold is inserted into the expansion joint, And when the upper mold is lowered, the inner cylinder is advanced so that the floating mold supports the upper mold in the expansion joint.

This object is achieved according to the invention by a method of manufacturing a telescopic joint device, comprising the steps of: a) fabricating a telescopic joint to prevent rubber from adhering to the inner surface of the ends of the vertical member and the finger member, Removing each of the partially removed rubbers; b) welding the ends of the finger members to the ends of the vertical members of the expansion joints where the rubber is not adhered or rubber-removed by the step a), and then joining both of the expansion joints by welding; c) placing a connection portion of the expansion joints coupled by the step b) between the upper mold and the lower mold of the expansion joint device for a bridge according to any one of Claims 5 to 7, Placing an inner mold of an inner mold apparatus provided in a support frame of the expansion joint apparatus for bridging into the interior of the expansion joint and placing the inner mold inside the connection unit; And d) when the rubber for vulcanizing and bonding is placed on the connecting portion, the first heating means in the lower mold, the second heating means in the upper mold, and the third heating means in the inner mold, The vulcanization-bonding rubber is heated and pressed on the upper mold, the lower mold and the inner mold by vulcanization bonding to the inner surface of the connecting portion, And connecting the rubber of the connecting devices to each other so as to allow the connecting portion to be waterproofed.

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e) When another expansion joint device is additionally connected to the end of the expansion joint device already connected to prevent leakage by way of the step d), the end of the expansion joint device to be connected to the outer end surface of the already- And a step of disposing a waterproof coupling between the two expansion joints and then fastening the fastening brackets to each other with bolts.

The waterproof coupling comprises: a metal plate having a predetermined thickness; And vulcanized rubber members provided on both sides of the metal plate and each having insertion protrusions inserted into the expansion joint device to be connected to each other.

Wherein the waterproof coupling is formed of a metal plate having a predetermined thickness and formed of 2 to 4 pieces; An inner vulcanized rubber material disposed between the metal plates; And vulcanized rubber members provided on outer surfaces of the metal plates, respectively, and insertion protrusions inserted into the expansion joint device to be connected to each other.

According to the present invention, it is possible not only to connect the expansion joints for bridges manufactured by a certain standard length in the longitudinal direction so as to match the width of the upper plate of the bridge but also to connect the connecting rubber of the expansion joints connected to each other by vulcanization adhesion It is possible to provide an effect that the watertightness of the connection portion can be maintained.

Further, since the expansion joint devices for bridges can be connected quickly and easily, it is possible to quickly and easily perform the operation of connecting the expansion joint devices to each other so as to match the width of the upper plate of the bridge, .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway perspective view showing a telescopic joint device for a bridge according to a first embodiment of the present invention; FIG.
FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1 for explaining the operating state of the expansion joint device for bridges shown in FIG.
3 is a sectional view taken along the line BB of Fig. 1 for explaining the operating state of the expansion joint device for bridges shown in Fig.
4 is a plan view showing the expansion joint device for bridges shown in FIG.
FIG. 5 is a cross-sectional view illustrating a telescopic joint assembly for a bridge according to a second embodiment of the present invention.
6 is a longitudinal sectional view for explaining the operating state of the expansion joint device for bridges shown in FIG.
FIG. 7 is a perspective view for explaining a method of connecting in a field by using a waterproof coupling when another expansion joint is further connected to the expansion joint connected to the expansion joint device for a bridge according to the invention.
8 is a perspective view showing another embodiment of the waterproof coupling shown in Fig.
9 is a schematic view for explaining construction of a telescopic joint device connected using a telescopic joint device for bridges according to the present invention.
10 is a schematic view for explaining the construction of the expansion joint device according to the prior art.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

1 is a partially cutaway perspective view showing a telescopic joint device for a bridge according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view illustrating an operation state of the telescopic joint device for a bridge shown in FIG. 1 And FIG. 3 is a sectional view taken along the line BB of FIG. 1 for explaining the operating state of the expansion joint device for bridges shown in FIG. 1. As shown in FIG. 4 is a plan view showing the expansion joint device for bridges shown in FIG.

As shown in FIGS. 1 to 4, the expansion joint device for bridges according to the present invention is for connecting the expansion joints 100 for an open bridge to each other in the longitudinal direction, and the first heating means 52 A lower mold 50 mounted on the lower frame 10 and an upper frame 30 installed at a predetermined distance from the lower frame 10 by the side frames 20, Which is coupled to the lower end of the pressing member 60 so as to correspond to the lower mold 50 in a space formed between the lower frame 10 and the upper frame 30 by the second heating means 72, And a mold (70).

The first heating means 52 and the second heating means 72 are made of heat wire or the like.

Such a flexible joint connection device for bridges is constructed such that the rubber bonded to the ends of the vertical member 110 and the finger member 120 among the rubber member 140 vulcanized and bonded to the vertical member 110 and the finger member 120 is removed The connecting parts 300 connected to each other by butting welding are connected to the upper mold 70 and the lower mold 70 by connecting the vertical members 110 of the respective expansion joints 100 and the ends of the finger members 120, And the upper mold 70 and the lower mold 50 are joined to each other by vulcanization and bonding rubber (for example, 200 are heated while being heated to vulcanize and adhere so that the connection portion 300 is waterproofed.

This will be described more specifically.

The expansion joint device for bridges according to the present invention is configured such that a work space is formed between the upper and lower frames 10 and 30 by the lower frame 10, the pair of side frames 20 and the upper frame 30 And a frame portion.

On both sides of the lower frame 10, a supporting frame 40 having supporting rollers 42 for horizontally supporting the telescopic joints 100 to be connected to each other and moving them in the horizontal direction, as shown in FIG. 1, Respectively. The telescopic joints 100 connected to each other by the support frame 40 can be stably moved in a horizontal state, so that the connection operation can be performed stably, quickly, and easily. Particularly, the operation of welding and joining the vertical member 110 of the expansion joint apparatuses 100 manufactured with the vulcanized and adhered rubber 140 removed or removed with the fingers 120 by the butt welding is performed by the support frame 40 and then move to the work space between the upper and lower frames 10, 30 to perform the waterproofing process.

The work space between the upper and lower frames 10 and 30 is formed by connecting the vulcanized and adhered rubber 140 of the two expansion joints 100 with the rubber 200 for vulcanization and bonding, So that the waterproofing of the connection portion 300 welded with the butt welded portion is performed.

The lower mold 50 is installed in a mounting portion 12 formed at the center of the lower frame 10 so as to protrude more than the surface of the lower frame 10. This lower mold 50 is an open- 1 and 2 have protrusions for supporting the upper portion of the vulcanized and adhered rubber 140 so as to be waterproof while elastically connecting between the both finger members 120 of the elastic member 100. That is, Although it is shown that the upper surface of the telescopic joint 100 is seated on the upper surface of the lower frame 10 after reversing the joint 100, The portion where the metal mold 50 is supported corresponds to the upper surface of the concave shape expansion joint 100. In other words, the upper portion is concave so as to form concave rainwater guide grooves between the fingers 120, The guide portion 142 is formed. Therefore, the lower mold 50 is convexly formed to form the concave rainwater guide portion 142, and a predetermined length, for example, a portion where the vulcanized rubber 140 is removed, Is preferably formed to be equal to or longer than the length of the first electrode.

The upper mold 70 has a concave groove contrary to the above-described lower mold 50 so as to be coupled to the lower end of the pressing member 60. The upper mold 70 has a concave upper portion and a lower convex (Upper portion in FIG. 2) of the rainwater guiding portion 142 in the form of a rainwater. That is, the lower mold 50 of the convex shape and the upper mold 70 of the concave shape are heated by pressing the vulcanization-bonding rubber 200 therebetween to concave the rainwater guiding portion 142 between the both finger members 120 .

A first heating means 52 for heating the rubber 200 for vulcanizing and bonding is provided in the lower mold 50 and a second heating means 52 for heating the rubber 200 for vulcanizing and bonding is provided in the upper mold 70. [ 2 heating means 72 is installed.

When the upper and lower molds 70 and 50 press the vulcanization-bonding rubber 200, the first and second heating means 52 and 72 heat the vulcanization-bonding rubber 200 So that the adhesion between the finger members 120 on both sides and the inner surface of the vertical member 110 and the vulcanized rubber 140 is achieved.

The pressing member 60 is for moving the upper mold 70 in the direction of the lower mold 50 so as to heat and press the vulcanizing and bonding rubber 200. As shown in Figs. 1 and 2, And a screw shaft 64 provided with a screw 62. [ Therefore, the screw rod 64 is moved upward and downward with reference to Fig. 2 by the forward or reverse rotation of the handle 62. [

At this time, the pressing member 60 is not shown in the drawing, but may be a pressurizing cylinder that operates the piston rod by hydraulic pressure or pneumatic pressure.

A method of connecting the expansion joint devices 100 to the expansion joint device for bridges using the thus configured expansion joint device for bridges will now be described.

Before explaining the connection method, since the length of a commonly used expansion joint device 100 is 1.8 m, when the expansion joint devices 100 having such a length are connected in the longitudinal direction and connected at 3.6 m, And they are connected to each other by using the expansion joint device for a bridge according to the invention. However, the present invention is not limited to this, and may be applied to a case where a plurality of expansion joints 100 having various lengths are connected to a single or a plurality of joints.

That is, as shown in FIG. 9, the expansion joint apparatus 100 having a length of 1.8 m is connected to the above-described expansion joint apparatus to make a length of 3.6 m, 100) are connected to each other in the field so as to fit the width of the bridge, and the expansion joints 100 having a length of 1.8 m are connected to each other at the expansion joint manufacturing factory or construction site.

a) Step

The vulcanization adhesive rubber 140 may not be adhered to the inner surfaces of the end portions of the vertical members 110 and the finger members 120 when the stretch joint device 100 is manufactured, ) In this case, an operation is performed to partially remove the rubber adhered to the inner surface of the vertical member 110 and the end portion of the finger member 120, respectively.

In this work, when the two expansion joints 100 of the structure in which the rubber is vulcanized and adhered so as to be elastically stretchable between the finger members 120 are connected to each other like the New Monocell type, When the finger member 120 and the end of the vertical member 110 and the other end of the finger member 120 of the sound field and the end of the vertical member 110 are brought into contact with each other after welding, This is an important task for preventing the rubber 140 from being burned.

Therefore, as described above, when the expansion joint 100 is manufactured by the vulcanization bonding method, the rubber 140 is vulcanized and adhered to a portion of each end of the finger member 120 and a portion of each end of the vertical member 110 . At this time, a portion of each end of the finger member 120 and a portion of each end of the vertical member 110 mean between about 10 cm and 20 cm. That is, if the vulcanized and adhered rubber 140 is not vulcanized and adhered at a distance of 10 cm to 20 cm from each end, or if the vulcanized and adhered rubber 140 is already removed .

b) Step

The expansion joint 100 (100) in which the rubber 140 for vulcanizing and bonding is not adhered or the rubber 140 for vulcanization and bonding at a portion of the end of the finger member 120 and the vertical member 110 is removed by the above- Of the vertical member 110 and the end of the finger member 120 are welded to each other to connect and connect the two expansion joints 100. [ At this time, since the rubber 140 for vulcanizing and bonding is not attached to the abutting region of the vertical member 110 to be welded and the finger member 120 or the attached rubber 140 for vulcanizing and bonding is removed The vulcanization-bonding rubber 140 is prevented from being burned by the welding operation.

When the step b) is performed, a separate welding workbench may be used to maintain the horizontal joints of the two expansion joints 100 at the same height, or may be placed on the support frame 40 shown in Fig. 1, It can be connected by welding. That is, the support frame 40 can be used as a welding workbench.

When the butt welding operation is performed, the welded portion is subjected to a surface treatment with a grinder or the like.

c) Step

The connecting portion 300 of the expansion joints 100 coupled to each other by the above-described step b) is positioned between the upper mold 70 and the lower mold 50 of the above-described flexible joint for bridges, 300, the vulcanization-bonding rubber 200 is placed.

That is, as shown in FIGS. 1 and 2, the telescopic joint 100 coupled to each other by facing welding is turned upside down to be seated on the upper surface of the lower frame 10 and the support frame 40, And the expansion joint device 100 is disposed so as to be positioned in the mold 50. [ Then, a rubber-like vulcanizing and bonding rubber 200 having a predetermined thickness is placed inside the connecting portion 300.

The vulcanization-bonding rubber 200 is vulcanized and adhered to the inner surface of the connecting portion 300, that is, to the inner surface of the finger member 120 and the vertical member 110, 140 formed between the two finger members 120 and to form a "V" type concave rainwater guide portion 142 between the two finger members 120.

At this time, an adhesive may be applied to both the fingers 120 and the vertical member 110 to be vulcanized and bonded to the vulcanization-bonding rubber 200.

d) Step

The lower mold 500 is located at the lower part of the connection part 300 and the upper mold 70 is located at the upper part of the connection part 300. The upper mold 70 is located between the inner side surfaces of the connection part 300, The first heating means 52 embedded in the lower mold 50 and the second heating means 72 installed in the upper mold 70 are disposed on the inner surface of the upper mold 110, The pressure member 60 is lowered and operated while generating heat.

When the pressing member 60 is lowered, the upper mold 70 is lowered, and the vulcanized and adhered rubber 200 disposed on the connecting portion 300 is heated and pressed. At this time, the lower mold 50 supports the vulcanization and adhesion rubber 200 to which the upper mold 70 presses.

The lower mold 50 is positioned at the lower portion of the connecting portion 300 (substantially between the two fingers forming the rainwater guiding portion), the upper mold 70 is lowered by the pressing member 60, The rubber 200 for vulcanizing and bonding is vulcanized and bonded to the inner wall of the connecting portion 300, that is, the inner surface of both the vertical members 110, so that the two rubber- Bonded to the vulcanized and adhered rubbers 140 of the apparatus 100 to be integrated and vulcanized and adhered to both the finger members 120 as shown in Fig.

That is, the vulcanization-bonding rubber 200 is vulcanized and adhered to the region where the rubber 140 adhered to the ends of both the expansion joint devices 100 is removed, And a concave rainwater guide portion 142 is formed between the upper and lower molds 70 and 50 while being vulcanized and bonded to both the finger members 120. [

In this process, both the expansion joints 100 are firmly connected to each other, and the vulcanization-bonding rubber 200 is vulcanized and bonded to the vertical member 110 of the connection portion 300 and the finger member 120, It is possible to prevent rainwater from flowing into the butt joint portion (welding portion) of the expansion joint device 100, that is, the connection portion 300. That is, the connection portion 300 is waterproofed.

When the operation of vulcanizing and bonding the vulcanized and adhered rubber 200 to the connecting portion 300 is completed by the above-described process, the pressing member 60 is raised to raise the upper mold 70.

Then, the expansion joint 100 connected to each other to be waterproof is horizontally moved to the loading site or moved to the construction site.

The construction of the expansion joint device 100 is improved by connecting the already constructed stretch joint devices 100 in the longitudinal direction so as to correspond to the width of the upper plate of the bridge. In particular, compared to the bolt tightening method using the coupling, The performance can be greatly improved.

5 is a transverse sectional view showing a telescoping joint device for a bridge according to a second embodiment of the present invention. FIG. 6 is a view showing the operation state of the telescopic joint device for a bridge shown in FIG. 5 Fig.

As shown in FIGS. 5 and 6, when the expansion joint device 100 to be connected to each other is of a hermetic type, the expansion joint device for a bridge according to the second embodiment is configured such that the hermetic expansion joint device 100 is connected The upper mold 70 and the lower mold 50 are inserted into the interior of the expansion joint 100 when the upper mold 70 and the lower mold 50 are pressed to one side of the support frame 40, The inner mold apparatus 80 for supporting the inner mold apparatus 80 is provided. That is, the lower mold 50 supports the outer lower portion of the connection portion 300, and the upper mold 70 is inserted into the connection portion 300 in advance before descending to pressurize the vulcanization- And the inner mold unit 80 is provided on one side of the support frame 40 so that the closed rubber part 150 is formed between the vertical member 110 and the finger member 120 while supporting the upper mold 700. [ will be.

5 and 6, the inner mold apparatus 80 is configured to be actuated by hydraulic pressure or air pressure to move the insertion piston rod 87A forward and backward, An insertion cylinder 87 which is installed on one side in the horizontal direction and an insertion piston rod 87A which is inserted into the expansion joint device 100 when the insertion piston rod 87A is advanced A movable mold (not shown) for supporting the upper mold 70 in the direction of the upper mold 70 and the lower mold 50 by hydraulic pressure or air pressure when the upper mold 70 and the lower mold 50 press- And an inner mold 82 having a stationary mold 82B for supporting the upper mold 50A and a lower mold 50B.

The flow metal mold 82A and the stationary metal mold 82B are provided with a third heating means 86. [

On the other hand, the fixed mold 82B is provided with an inner cylinder 88 which is actuated by pneumatic or hydraulic pressure, and the piston rod 88A of the inner cylinder 88 is coupled to the flow mold 82A. This structure is for widening or narrowing by the hydraulic pressure or pneumatic control to which the stationary metal mold 82B and the floating metal mold 82A are supplied.

That is, when the inner mold 82 is inserted into the expansion joint 100, when the inner cylinder 88 is contracted and the inner mold 82 is inserted into the expansion joint 100, When the upper mold 70 is lowered, the inner cylinder 88 is advanced to move the flow mold 82A inside the expansion joint 100 into the upper And moves toward the mold 70 to support the upper mold 70.

A method of connecting the closed expansion joint devices 100 using the elastic joint device for bridges according to the second embodiment will be described.

a) Step

When manufacturing the closed expansion joint 100, rubber is not adhered to the inner surface of the end portion of the vertical member 110 and the finger member 120, or the vertical member 110 of the expansion joint device 100 to be connected (110) and the rubber 140 vulcanized and bonded to the inner surface of the end portion of the finger member 120, respectively.

b) Step

The ends of the vertical member 110 of the expansion joints 100 and the ends of the finger members 120 which have been subjected to the above-described operations are brought into contact with each other after being welded to each other to connect and connect the two expansion joints 100. When the two expansion joints 100 are joined by welding, the welding portion is subjected to a surface treatment with a grinder or the like.

c) Step

The connecting portion 300 of the expansion joints 100 coupled to each other is moved by the lower frame 10 and is positioned between the upper mold 70 and the lower mold 50 in the process described above. That is, as shown in FIG. 5, the lower part of the connection part 300 is located in the lower mold 50.

Then, as shown in FIG. 6, the rubber for vulcanization bonding 200 is inserted into the connecting portion 300 and into the expansion joint 100, and the rubber is inserted into the connection portion 300.

When the rubber for vulcanizing and bonding 200 is disposed inside the connection part 300, the insertion cylinder 87 of the inner mold apparatus 80 provided in the support frame 40 is operated so that the inner mold 80 can be retracted Is inserted into the coupling device (100) and positioned inside the connection part (300). At this time, the rubber for vulcanizing and bonding 200 is positioned between the inner mold 82, the upper and lower molds 70 and 50, and the vertical member 110 and the finger member 120 on both sides.

d) Step

The rubber 200 for vulcanization and bonding is inserted into the connecting portion 300 of the expansion joint 100 and the first heating means 52 installed in the lower mold 50 and the upper Power is supplied to the second heating means 72 embedded in the mold 70 and the third heating means 86 provided in the flow mold 82A of the inner mold 82 and the fixed mold 82B to generate heat, The upper mold 70 presses the vulcanized and vulcanized rubber 200 exposed between the both finger members 120. [

At the same time, the flow mold 82A of the inner mold 82 constituting the inner mold apparatus 80 is expanded and operated. In other words, the inner cylinder 88 is advanced to move the flow metal mold 82A toward the upper mold 70 side.

The inside of the vulcanizing and bonding rubber 200 in which the upper mold 70 is lowered while the outer side of the vulcanizing and bonding rubber 200 is pressed and the upper mold 70 is pressed from the outside is set as the moving mold 82A The inner mold 82 heats the vulcanization and adhesion rubber 200 which is in contact with the inner surfaces of the vertical members 110 on both sides and vulcanization bonding is performed between the stationary mold 82B and the lower mold 50 The rubber member 200 is heated and pressed between the vertical member 110 and the finger member 120 facing each other in the connecting portion 300. The rubber member 200 is sealed between the vertical member 110 and the finger member 120, (150) is formed by vulcanization bonding.

The hermetic rubber part 150 is joined to the vertical member 110 and the finger member 120 by vulcanization bonding as well as to the vulcanization bonded rubber 140 by fusion bonding , Leakage of rainwater into the connection portion (300) of the two expansion joint devices (100) is prevented. That is, the connection portion 300 is waterproofed.

When the operation of vulcanizing and bonding the vulcanized and adhered rubber 200 to the connecting portion 300 is completed by the above-described process, the pressing member 60 is raised to raise the upper mold 70. After the inner cylinder 88 is contracted to move the flow mold 82A toward the stationary mold 82B to narrow the gap therebetween, the inner cylinder 87 is retracted to retract the inner mold 82 And is released from the coupling device 100.

When the waterproof connection operation of the expansion joint device 100 is completed in this way, the expansion joint device 100 connected to each other is horizontally moved to the load site or moved to the construction site to install the bridge.

On the other hand, when the expansion joint devices 100 connected to each other by the above-described expansion joint device for bridges are moved to a construction site, the length of the expansion joint devices 100 connected to each other and the width The total length of the expansion joints 100 connected to each other or connected to each other is 3.6 m and when the expansion joints 100 are connected to each other in the field, the waterproof coupling 400 is used as shown in FIG. And connect them to each other. This will be described in detail.

7 is a view for explaining a method of connecting in situ using a waterproof coupling in the case of connecting another expansion joint to another expansion joint connected to the expansion joint device for bridges according to the invention It is a perspective view.

That is, as shown in FIG. 9, another expansion joint device 100A is further connected to the end of the expansion joint device 100, which is already connected to the length of 3.6 m, , A fastening bracket 111 is provided on the outer surface of the end portion of the expansion joint device 100A to be connected to the outer end surface of the end portion of the expansion joint device 100 already connected and waterproofing is provided between the two expansion joint devices 100, After the coupling 400 is positioned, the fastening brackets 111 are fastened to each other with the bolts 410.

The waterproof coupling 400 includes a metal plate 420 having a predetermined thickness and insertion protrusions 440 which are provided on both surfaces of the metal plate 420 and are inserted into the expansion joints 100 and 100A to be connected to each other, Are formed on the outer circumferential surface of the vulcanized rubber member 430, respectively. That is, a structure in which a vulcanized rubber material 430 is adhered to both surfaces of the metal plate 420 with a predetermined thickness is formed on the outer surface of the vulcanized rubber material 430, and the insertion protrusions 440 are formed in opposite directions As shown in Fig. 7, the shape of the waterproof coupling 400 is formed to be the same as the shape of the end surface of the expansion joint 100 or 100A including the fastening bracket 111, The shape of the waterproof rubber part 190 is formed to be the same as the shape of the waterproof rubber part 190 so as to be inserted into the inside of the waterproof rubber part 190 connecting the vertical member 110 and the finger member 120 in the joint devices 100 and 100A.

Meanwhile, the waterproof coupling 400 may be configured as shown in FIG.

The waterproof coupling 400 according to another embodiment has the waterproof coupling 400 of the above embodiment except that the two metal plates 420 are provided and the inner vulcanized rubber material 430A is disposed between the two metal plates 420. [ Ring 400. At this time, the metal plates 420 may be formed of three pieces, the inner vulcanized rubber material 430A may be composed of two pieces, or more.

The vulcanized rubber material 430 and the inner vulcanized rubber material 430A are vulcanized when heat and pressure are applied to improve various performances including the adhesive strength, and the carbon fibers may be contained at a predetermined ratio. In other words, the vulcanized rubber material 430 can be manufactured by adding carbon fiber at about 0.5 to 10% by weight in the production of the vulcanized rubber material 430.

When the waterproof coupling 400 is positioned between the two expansion joints 100 and 100A and the fastening brackets 111 are fastened to each other with the bolts 410, 400 vulcanized rubber material 430 and inner vulcanized rubber material 430A can be vulcanized and bonded to the surface of the metal plate 420 and the fastening bracket 111. [ Since both of the insertion protrusions 440 are inserted into the waterproof rubber part 190 of the expansion joints 100 and 100A of both the joints 100 and 100A, it is possible to easily connect the two expansion joints 100 and 100A, Waterproof structure.

The present invention can be applied to an NB type, a TF type, a monocell type, and a new monocell type.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

10: lower frame 12: installation part
20: side frame 30: upper frame
40: support frame 42:
50: lower mold 52: first heating means
60: pressing member 70: upper mold
72: second heating means 80: inner mold device
82: Inner mold 82A: Flow mold
82B: stationary mold 86: third heating means
87: Insertion cylinder 87A: Insertion piston rod
88: Inner cylinder 88A: Piston rod
100, 100A: expansion joint device 110: vertical member
111: Fastening bracket
120: finger member 140: rubber vulcanized and adhered rubber
142: Rainwater guiding part 150: Sealed rubber part
190: Waterproof rubber part
200: Rubber for vulcanization and adhesion 300: Connection
400: waterproof coupling 410: fastening bolt
420: metal plate 430: vulcanized rubber member
430A: Inner vulcanizing rubber member 440: Insertion projection

Claims (15)

The present invention relates to a telescopic type expansion joint for connecting bridges in a longitudinal direction,
A lower mold provided with a first heating means and installed in a lower frame;
A pressing member penetrating the upper frame installed at a predetermined distance from the lower frame by the side frames;
An upper mold coupled to a lower end of the pressing member so as to correspond to the lower mold in a space formed between the lower frame and the upper frame with a second heating means installed therein;
A support frame provided on both sides of the lower frame to support the expansion joints to be connected to each other at both sides of the lower frame horizontally and to have movement rollers for moving the horizontal joints; And
And an inner mold unit inserted into the expansion joint unit to support the upper mold and the lower mold when the upper mold is pressed,
The vertical members and the end portions of the finger members of the respective elastic joint devices from which the rubber has been removed are connected by butting welding and then the joint portions welded to each other are positioned between the upper mold and the lower mold, An inner mold apparatus for supporting a mold and a lower mold is provided, and after the vulcanization-bonding rubber is placed on the connecting portion, the upper mold and the lower mold pressurize the vulcanization-bonding rubber while heating the pressing member Characterized in that the connecting portion is vulcanized and bonded so as to be waterproofed.
Extension joints for bridges. delete The method according to claim 1,
The lower mold,
Wherein the lower frame is installed at an installation part formed at the center of the lower frame and is installed so as to protrude more than the surface of the lower frame.
Extension joints for bridges. The method according to claim 1,
The pressing member
Characterized in that it comprises a screw rod with a handle or a pressurizing cylinder which operates the piston rod by hydraulic or pneumatic pressure.
Extension joints for bridges. The method according to claim 1,
Wherein the inner mold apparatus comprises:
An insertion cylinder configured to be operated by hydraulic pressure or air pressure to operate the insertion piston rod forward and backward, and installed horizontally on one side of the support frame; And
Wherein the piston rod is inserted into the interior of the expansion joint when the insertion piston rod is advanced, and when the upper mold is pressurized, the upper mold and the lower mold are pressed by hydraulic or pneumatic pressure, And an inner mold having a movable mold for supporting the upper mold and a stationary mold for supporting the lower mold,
Extension joints for bridges. 6. The method of claim 5,
Characterized in that the flow mold and the stationary mold further comprise a third heating means.
Extension joints for bridges. 6. The method of claim 5,
In the stationary mold,
A piston rod of the inner cylinder is coupled to the flow mold, and when the inner mold is inserted into the expansion joint device, the inner cylinder is contracted to operate, Wherein when the upper mold is lowered, the inner cylinder advances to support the upper mold within the expansion joint.
Extension joints for bridges. delete a) When the expansion joints are manufactured, the vertical member and the finger member may be made so that the rubber is not adhered to the inner surface of the end portion, or the vertical member of the expansion joints to be connected and the rubber adhered to the inner surface of the finger member end portion are partially removed step;
b) welding the ends of the finger members to the ends of the vertical members of the expansion joints where the rubber is not adhered or rubber-removed by the step a), and then joining both of the expansion joints by welding;
c) positioning a connection portion of the expansion joints coupled by the step b) between the upper mold and the lower mold of the expansion joint device for bridges according to any one of Claims 1 to 3, Placing a rubber for vulcanizing and bonding on the inside of the connecting portion and inserting an inner mold of an inner mold apparatus provided in a support frame of the expansion joint apparatus for bridging into the inside of the connecting portion by inserting the inner mold into the telescopic joint; And
and d) when the rubber for vulcanizing and bonding is disposed in the connecting portion, the first heating means in the lower mold, the second heating means in the upper mold, and the third heating means in the inner mold, The vulcanization adhesive is applied to the inner surface of the connecting portion by heating and pressing the vulcanizing and bonding rubber with the upper and lower molds and the inner mold by activating the pressing member of the expansion joint connecting device and extending the operation of the inner mold device, And connecting the rubber of the devices to allow waterproofing of the connection.
Extension joint connection method for bridges. delete delete delete 10. The method of claim 9,
e) When another expansion joint device is additionally connected to the end of the expansion joint device already connected to prevent leakage by way of the step d), the end of the expansion joint device to be connected to the outer end surface of the already- And connecting the fastening brackets to the fastening brackets by fastening the fastening brackets to each other after the fastening brackets are provided on the outer side of the fastening brackets and the waterproof coupling is positioned between the two expansion joints.
Extension joint connection method for bridges. 14. The method of claim 13,
The water-
A metal plate having a predetermined thickness; And
Characterized in that each of the first and second joints is formed of a vulcanized rubber material which is provided on both sides of the metal plate and in which insertion protrusions to be inserted into the expansion joint device to be connected to each other are formed to protrude,
Extension joint connection method for bridges. 14. The method of claim 13,
The water-
A metal plate formed to a predetermined thickness and made of 2 to 4 pieces;
An inner vulcanized rubber material disposed between the metal plates; And
And the insertion protrusions, which are respectively provided on the outer surfaces of the metal plates and inserted into the expansion joint device to be connected to each other,
Extension joint connection method for bridges.

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