JP2006009334A - Built-up cut-off-cum-noise-insulation equipment installed in joint gap between joints of bridge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To concurrently realize the cut-off and noise insulation of a joint gap between joints, in a bridge such a road bridge. <P>SOLUTION: Fastening plates 14 and 15 are fixed to web plates 11 and 12 by means of bolts 23 and 24 in such a manner as to face each other, respectively, and an expansion member 18 is laid between the fastening plates 14 and 15. In the expansion member 18, three expansion joints 16 are connected together, and sponge 17 is annexed. Since this dispenses with the performance of complicated operations such as the application of an adhesive, workability is good. Since an organic solvent does not have to be used, safety during the operations is high. Additionally, since an elastic seal member, which loses elasticity due to change with the elapse of time, and a back-up material do not have to be used, cut-off/noise-insulation performance is maintained for a long period of time. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a water stop and sound insulation device for a bridge joint provided between joints formed on a bridge such as a road bridge.

  In this type of bridge, a seam gap is provided to absorb displacement such as expansion and contraction and vertical movement of the end of the girder accompanying the temperature change of the girder body. As a result, water such as rainwater leaks from the joint between the joints to the bottom of the bridge, causing the bearing to rust. In addition, there is a risk that noise when passing a vehicle from the joint gap leaks under the bridge and causes noise problems to the surrounding residents. Therefore, it is strongly desired to simultaneously realize water stop and sound insulation between seams by providing some kind of water stop and sound insulation for bridge joints between seams.

Conventionally, this water stop and sound insulation device for bridge joints has been constructed by a so-called elastic sealing material filling method. That is, first, a backup material is disposed between the abdominal plates of a pair of expansion joints facing each other with a gap between the joints, and is tightly fixed to the idler side surface of the abdominal plate. Sealing material was filled and solidified to form a water stop and sound insulation device for bridge joints (see, for example, Patent Document 1). Many of these backup materials are made of urethane foam, but those made of rubber or elastomer have also been developed.
JP 2003-253610 A

  However, this has the following disadvantages.

  First, in order to construct this water-stop and sound-insulating device for bridge joints, complicated operations such as applying adhesive, stirring the elastic seal material and preventing leakage, filling in narrow spaces, Workability is poor.

  Secondly, the elastic sealing material is prepared by mixing and stirring a curing agent composed of an organic solvent with the main agent, and filling it. Therefore, there is a risk that the worker may inhale the organic solvent and harm the health, and the safety during the work is low.

  Third, the water and sound insulation performance of the water and sound insulation device for bridge joints is difficult to sustain. That is, the elastic sealing material and the backup material lose elasticity due to secular change, and cracks and peeling occur, resulting in a gap. Then, through this gap, water such as rain water falls below the joint play, and noise when passing through the vehicle leaks to the outside. As a result, it becomes difficult to maintain the water and sound insulation performance of the bridge joint water and sound insulation device over a long period of time.

  In view of such circumstances, an object of the present invention is to provide a water and sound insulation device for bridge joints that has good workability, high safety during work, and water and sound insulation performance is maintained over a long period of time. And

First, the invention according to claim 1 is a water stop / sound insulation device for a bridge joint provided in an expansion joint device provided with a pair of abdominal plates facing each other with a gap between the joints of the bridge. The fastening plates are attached to each other so as to face each other, and an elastic member is installed between these fastening plates.
The invention according to claim 2 is characterized in that the elastic member is formed by connecting a plurality of expansion joints.
According to a third aspect of the present invention, each of the expansion joints has flanges formed at both ends thereof, and the plurality of expansion joints are connected with a coupling channel fitted to the flanges. It is characterized by being.
The invention according to claim 4 is characterized in that a sound-absorbing material is attached to the elastic member.
The invention according to claim 5 is characterized in that the sound absorbing material is a sponge.

  According to the present invention, a fastening plate is attached to a pair of abdominal plates facing each other with a gap between the joints, and the construction of the water-stop and sound-insulating device for the bridge joint is completed simply by attaching an elastic member between these fastening plates. Therefore, it is possible to provide a water and sound insulation device for bridge joints that has good workability, high safety during work, and water and sound insulation performance that is maintained over a long period of time.

  That is, workability is good because there is no need to perform adhesive coating and other complicated operations. In addition, since it is not necessary to use an organic solvent, safety during work is high. Furthermore, since it is not necessary to use an elastic sealing material or a backup material that loses its elasticity due to aging, the water stopping / sound insulation performance is maintained for a long time.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, an expansion joint device 5 is installed on the road bridge 1, and the expansion joint device 5 has a pair of sawtooth face plates 9, 10 facing each other with a joint gap 4 therebetween. ing. Abdominal plates 11 and 12 are suspended from these face plates 9 and 10 so as to face each other at a predetermined interval. A sound insulation device 13 is provided so as to be positioned below the joint gap 4.

  As shown in FIG. 2, the water-stop and sound-insulation device 13 for a bridge joint is composed of a pair of fastening plates 14 and 15 and a telescopic member 18.

  As shown in FIG. 3, each of the fastening plates 14 and 15 has an elongated flat plate-like substrate 14c and 15c made of a steel material, and a cover material 14a and 15a made of a chloroprene-based synthetic rubber that covers the substrates 14c and 15c. is doing. A plurality of screw holes 14e and 15e (only two of them are shown in FIG. 3) are formed in the substrates 14c and 15c. A plurality of bolt insertion holes 14b and 15b (only two of them are shown in FIG. 3) are formed in the cover members 14a and 15a corresponding to the screw holes 14e and 15e. Further, the cover materials 14a and 15a are formed with two water stopping ridges 14d and 15d on the back surface thereof so as to extend in the longitudinal direction of the cover materials 14a and 15a. The portions 14f, 14g, 15f, and 15g are formed so as to extend in the longitudinal direction of the cover materials 14a and 15a.

  On the other hand, as shown in FIG. 2, the expansion / contraction member 18 has three expansion joints 16 made of chloroprene-based synthetic rubber connected by a connecting channel 19 made of nylon, and a sponge 17 made of a foam material as a sound absorbing material. It was established. Here, as shown in FIG. 4, each expansion joint 16 has a pair of flat contact plates 16a and 16b, and flanges 16d are provided at both upper and lower ends of each contact plate 16a and 16b. , 16e are formed so as to extend in the longitudinal direction of the contact plates 16a, 16b (direction perpendicular to the paper surface of FIG. 4). Further, between the contact plates 16a and 16b, three hexagonal cylindrical expansion / contraction units 16c are connected and formed integrally. As shown by the solid line and the alternate long and short dash line in FIG. 4, the expansion joint 16 can be expanded and contracted by elastic deformation of the expansion unit 16 c. As shown in FIG. 5, each coupling channel 19 has a channel main body 19a having a U-shaped cross section. One end of the channel main body 19a has a fitting recess 19b, and the other end has a fitting protrusion. A portion 19c is formed.

  Since the road bridge 1 has the above-described configuration, in order to improve the water stop / sound insulation performance of the road bridge 1, when the water stop / sound insulation device 13 for the bridge joint is constructed below the joint gap 4, According to the procedure. In addition, the construction method described here is an example, and other various construction methods (for example, after assembling the water stop / sound insulation device 13 for the bridge joint, are bridged between the pair of belly plates 11, 12). A method of mounting) is conceivable.

  First, as shown in FIG. 1, the fastening plates 14 and 15 are fixed to the two abdominal plates 11 and 12 by bolting, respectively. For this purpose, as shown in FIG. 2, the fastening plates 14 and 15 are brought into contact with the front sides of the abdominal plates 11 and 12, respectively (the side between the seams 4), and bolts 23 and 24 are attached from the back side of the abdominal plates 11 and 12, respectively. It is inserted and screwed into the boards 14c and 15c. Then, the fastening plates 14 and 15 are fixed to the two abdominal plates 11 and 12 so as to face each other. In addition, since the water stop protrusion 14d and 15d are formed in the back surface of the fastening plates 14 and 15, ie, the surface at the side of the abdominal plates 11 and 12, the fastening plates 14 and 15 Adhere closely.

  On the other hand, the elastic member 18 is assembled. For this purpose, as shown in FIG. 2, three expansion joints 16 are joined in order, and the coupling channels 19 are fitted to the joints of these expansion joints 16, that is, the flanges 16d and 16e of the contact plates 16a and 16b. And fix. Next, the sponges 17 are inserted into the respective expansion / contraction units 16 c of all the expansion joints 16. Then, the assembly of the elastic member 18 is completed.

  When the telescopic member 18 is assembled in this way, the telescopic member 18 is mounted across the pair of fastening plates 14 and 15 as shown in FIG. For this purpose, one end portion (abutment plate 16a) of the expansion / contraction member 18 is brought into contact with one fastening plate 14, and the coupling channels 19 are fitted and fixed respectively above and below the contact portion. Similarly, the other end portion (contact plate 16b) of the elastic member 18 is brought into contact with the other fastening plate 15, and the coupling channels 19 are fitted and fixed respectively above and below the contact portion. Then, the elastic member 18 is bridged between the pair of fastening plates 14, 15, that is, below the joint gap 4.

  Here, the construction of the water stop and sound insulation device 13 for the bridge joint is completed, and the road bridge 1 excellent in the water stop and sound insulation performance of the joint gap 4 is completed. That is, a water stop and sound insulation device 13 for a bridge joint is provided below the joint gap 4 so as to be attached to the abdominal plates 11 and 12 via the fastening plates 14 and 15. Water such as rain water that has fallen through is prevented from leaking under the bridge by a water stop and sound insulation device 13 for the bridge joint. In addition, since the fastening plates 14 and 15 are in close contact with the abdominal plates 11 and 12 as described above, there is no risk of leakage from the gap between the fastening plates 14 and 15 and the abdominal plates 11 and 12. Therefore, it is possible to avoid the occurrence of a situation where the support (not shown) rusts. Moreover, since the noise when passing through the vehicle is absorbed by the sponge 17, it is possible to solve the noise problem for the surrounding residents.

  As described above, the construction of the water stop and sound insulation device 13 for the bridge joint is only to fix the fastening plates 14 and 15 to the abdominal plates 11 and 12, and to attach the elastic member 18 between the fastening plates 14 and 15. Complete with. Therefore, there is no need to perform adhesive application and other complicated operations, so that workability is good. In addition, since it is not necessary to use an organic solvent that stirs with the main agent, safety during work is high. Furthermore, since it is not necessary to use an elastic sealing material or a backup material that loses its elasticity due to secular change, the water stop / sound insulation performance is maintained for a long time.

  In the above-described embodiment, the water stop and sound insulation device 13 for the bridge joint in which the three expansion joints 16 are connected by the coupling channel 19 has been described. However, the expansion and contraction constituting the water stop and sound insulation device 13 for the bridge joint is described. The number of joints 16 to be connected may be an appropriate number according to the distance between the fastening plates 14 and 15. At this time, even if the distance between the fastening plates 14 and 15 is changed, it can be dealt with by increasing / decreasing the number of connections of the expansion / contraction joints 16. Therefore, it is economical to prepare one kind of expansion / contraction joints 16 and it is economical. is there.

  In addition, in the above-mentioned embodiment, the case where the expansion joint 16 made from a chloroprene-type synthetic rubber provided with the three expansion-contraction units 16c formed in the hexagonal cylinder shape was demonstrated. However, as the shape of the expansion / contraction unit 16c, a shape other than the hexagonal cylinder shape (for example, a cylindrical shape, an elliptical cylinder shape, a rhombus cylindrical shape, etc.) may be adopted. Further, the number of the expansion / contraction units 16c may be any number as long as it is one or more. Further, as the material of the expansion joint 16, a material other than chloroprene synthetic rubber (for example, EPDM (ethylene propylene rubber)) may be employed.

  In the above-described embodiment, the case where the nylon coupling channel 19 is used has been described. However, the material of the coupling channel 19 is a material other than nylon (for example, rust prevention treatment such as resin coating or plating). Steel material etc.) may be adopted.

  In the above-described embodiment, the case where the sponge 17 made of the foam material is used as the sound absorbing material has been described, but a sound absorbing material other than the sponge 17 (for example, glass wool or the like) may be employed. Further, when there is no request for sound insulation in the joint gap 4, it is possible to omit the sound absorbing material and reduce the material cost of the water stop and sound insulation device 13 for the bridge joint.

1 is a front view of a road bridge to which an embodiment of a water stop and sound insulation device for a bridge joint according to the present invention is applied. It is a front view of the water stop and sound insulation apparatus for bridge joints shown in FIG. FIG. 3 is a front view (upper left), a bottom view (lower left), and a cross-sectional view (right) of a fastening plate constituting the water stop and sound insulation device for a bridge joint shown in FIG. 2. It is a front view of the expansion-contraction joint which comprises the water stop and sound insulation apparatus for bridge joints shown in FIG. In the plan view (top), front view (center), bottom view (bottom), left side view (left), and right side view (right) of the connecting channel constituting the water stop and sound insulation device for the bridge joint shown in FIG. is there.

Explanation of symbols

1 …… Road bridge (bridge)
4 ... Seam free space 5 ... Expansion joint device 11, 12 ... abdomen 13 ... Water stop and sound insulation device for bridge joints 14, 15 ... Fastening plate 16 ... Expansion joints 16d, 16e ... Bridge 17 …… Sponge (sound absorbing material)
18 …… Elastic member 19 …… Coupling channel

Claims (5)

A water stop and sound insulation device for a bridge joint installed in an expansion joint device provided with a pair of abdominal plates facing each other with a gap between the bridge joints,
A fastening plate is attached to each of the abdominal plates so as to face each other,
A water stop and sound insulation device for a bridge joint, characterized in that an elastic member is installed between these fastening plates.   The water stop and sound insulation device for a bridge joint according to claim 1, wherein the expansion member is formed by connecting a plurality of expansion joints. Each expansion joint is formed with a flange on each end thereof,
The water stop and sound insulation device for a bridge joint according to claim 2, wherein the plurality of expansion joints are connected to each other by fitting a coupling channel to the flange portion.   The water stop and sound insulation device for a bridge joint according to any one of claims 1 to 3, wherein a sound absorbing material is attached to the expansion and contraction member.   The said sound-absorbing material is sponge, the water stop and sound insulation apparatus for bridge joints of Claim 4 characterized by the above-mentioned.

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