JP4115042B2 - How to connect expansion joints for roads - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention relates to how to connect road expansion joints, but more particularly relates or contacts paved road viaduct, on how to connect road expansion joints for use in connecting parts of the road width extension .
[0002]
[Prior art]
Conventionally, road expansion joints used for connecting parts of viaduct paved roads and connecting parts of road extension parts are connected to expansion joints 1a and 1b as shown in FIG. It is generally processed, and the adhesive 2 is applied to the connection surface Q and finished only with the unvulcanized rubber 3 as shown in FIG.
[0003]
[Problems to be solved by the invention]
However, when attached to a T-shaped connecting portion as shown in the figure by such a connection method, there is little followability with respect to movement in two directions in the bridge axis direction (X direction) and the bridge axis perpendicular direction (Y direction). Therefore, there is a problem that the connection surface Q is peeled off or excessive stress is concentrated.
[0004]
The object of the present invention is to connect the connecting part of the expansion joint using a joint member that can follow all directions of the bridge axis direction, the bridge axis perpendicular direction, and the vertical direction. without having to, to provide a further connection methods of road expansion joint water-stopping can also be improved.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the road expansion joint connection method of the present invention is connected to the two road expansion joints by cutting so that a gap is formed in the connection portion between the two road expansion joints. Inserting a joint member made of a rubber-like elastic body having a processable surface and having a space that can be expanded and contracted in the space between the connection surfaces, and connecting the joint member to the connection surface using a mold The gist is to vulcanize and bond by secondary vulcanization.
[0008]
This invention, by have configured as described above, the connection portion of the expansion joint bridge axis direction, the bridge axis perpendicular, can follow all directions, such as a vertical direction, as a result, the connection portion is peeled off In addition, the water-stopping property can be improved.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0010]
FIG. 1 is a plan view showing a first embodiment of a connection structure for a road expansion joint according to the present invention. This embodiment is oriented in a direction perpendicular to an existing road expansion joint 11 at a central portion thereof. In this case, a new road expansion joint 12 is connected to a predetermined position of the road expansion joint 11 which is a base material, and a connecting portion 13 is formed by forming a groove forming an obtuse angle α, while a new road expansion joint 11 is formed. The distal end of the expansion joint 12 is also grooved at the same angle as the obtuse angle α of the connection portion 13 to form the connection portion 14.
[0011]
Then, the air gap amount 15 of the joint connecting portion, a stretchable as shown in FIG. 3, and integrally vulcanization was wearing a sectional M-shaped joint member 17 made of a rubber-like elastic material having a void portion 16 It is configured.
[0012]
In other words, the joint processed surfaces 13a and 14a of the joint connecting portion are secondarily vulcanized with a mold (not shown) to integrally vulcanize and bond the M-shaped joint member 17 made of a rubber-like elastic body. Is.
[0013]
FIG. 2 is a plan view showing a second embodiment of the connection structure of the expansion joint for roads. This embodiment is similar to the first embodiment in that the predetermined position of the expansion joint 11 for roads as a base material is shown. The connecting portion 13 is formed by applying a groove processing to the acute angle β to the connecting portion 14, while the tip of the new road expansion joint 12 is also subjected to a groove processing at substantially the same angle as the acute angle β of the connecting portion 13. Form.
[0014]
Then, the air gap amount 15 of the joint connecting portion, a stretchable as shown in FIG. 3, and integrally vulcanization was wearing a sectional M-shaped joint member 17 made of a rubber-like elastic material having a void portion 16 It is configured.
[0015]
FIG. 4 is a plan view showing a third embodiment of a connection structure for a road expansion joint, and this embodiment is a terminal 11a of a road expansion joint 11 serving as a base material and a new road expansion joint 12. The terminal unit 12a is connected in an orthogonal direction (90 degrees).
[0016]
In this embodiment, the terminal portion 12a of the terminal portion 11a and a new road expansion joints 12 of road expansion joints 11 was cut at 45 degrees, the gap portion component 15 of the connecting portion Q between the terminal portions 11a, 12a Further, a joint member 17 having an M-shaped cross section made of a rubber-like elastic body that can be expanded and contracted as shown in FIG. 3 is integrally vulcanized and bonded.
[0017]
In other words, the joint processed surface of the end portions 11a and 12a of the joint connection portion Q is subjected to secondary vulcanization with a mold (not shown) to integrally add the joint member 17 having a M-shaped cross section made of a rubber-like elastic body. It is to be glued.
[0018]
Further, FIG. 5 is a plan view showing a fourth embodiment of the connection structure of the expansion joint for roads, and this embodiment is orthogonal to both sides of the center in the longitudinal direction of the expansion joint 11 for roads as a base material. In this case, new road expansion joints 18a and 18b are connected to each other, and the connecting portions 19a and 19b are formed by applying a groove processing with an acute angle β to a predetermined position of the road expansion joint 11 serving as a base material. On the other hand, the ends of the new expansion joints 18a, 18b are also grooved at substantially the same angle as the acute angle β of the connecting portions 19a, 19b to form the connecting portions 20a, 20b.
[0019]
The gap portion component 15a of the joint connecting portions Q, in 15b, integrally pressurizing sectional M-shaped joint member 17 made of a rubber-like elastic body having a stretchable and, and the gap portion 16 as shown in FIG. 3 It is constructed by sulfur bonding.
[0020]
That is, the joint processed portion of the joint connecting portion Q is secondarily vulcanized with a mold (not shown) to integrally vulcanize and bond the joint member 17 having an M-shaped cross section made of a rubber-like elastic body. is there.
[0021]
As described above, in each embodiment of the present invention, the joint portion 17 made of a rubber-like elastic body that can be expanded and contracted and has the gap portion 16 is provided integrally with the connecting portion of the expansion joint 11 for road. This makes it possible to follow the connecting part of the expansion joint in all directions, such as the direction of the bridge axis, the direction perpendicular to the bridge axis, and the vertical direction. As a result, the connecting part will not peel off or be damaged. It can be made good. Note that the joint member 17 is not limited to the M-shaped cross section as in the above-described embodiment, and may be any form that can expand and contract, such as a wave shape or a V shape, and that has the gap portion 16.
[0022]
【The invention's effect】
The present invention performs a cut as the gap portion in the joint connecting portion of the road as described above occur, the air gap portion of該継hand connecting portion, the joint member made of a rubber-like elastic body having a retractable air gap Is formed integrally by vulcanizing and bonding, so the connection part of the expansion joint can follow all directions such as the bridge axis direction, the bridge axis perpendicular direction, the vertical direction, etc. There is an effect that the water-stopping property can be improved without being damaged.
[Brief description of the drawings]
FIG. 1 is a plan view of a connection portion in a road expansion joint according to a first embodiment of the present invention.
FIG. 2 is a plan view of a connecting portion in a road expansion joint according to a second embodiment of the present invention.
3 is a cross-sectional view taken along line AA of FIGS. 1, 2, 4 and 5. FIG.
FIG. 4 is a plan view of a connection portion in a road expansion joint according to a third embodiment of the present invention.
FIG. 5 is a plan view of a connection portion in a road expansion joint according to a fourth embodiment of the present invention.
FIG. 6 is a plan view of a connecting portion in a conventional road expansion joint.
7 is a cross-sectional view taken along line BB in FIG.
[Explanation of symbols]
11 road expansion joints 12 road expansion joints 13 connecting section 13a connecting working surface 14 connecting section 14a connecting working surface 15 void portion component 16 gap portion 17 coupling member

Claims (1)

By cutting so that a gap portion is formed at the connection portion between the two expansion joints for roads, a connection processing surface is formed on the both expansion joints for both roads, and can be expanded and contracted to the gap portion between the connection processing surfaces. A method for connecting a road expansion joint, in which a joint member made of a rubber-like elastic body having a gap is inserted and vulcanized and bonded by secondary vulcanization of the joint member to the connection processed surface with a mold.

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