JP3151126B2 - Gasket mounting structure for concrete joints and gasket mounting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention is the mounting structure of the gasket concrete joint, and a mounting device of the gasket.

[0002]

2. Description of the Related Art Road surfaces, such as roads, factory premises or factory floors, airport aprons, and runways, through which various vehicles pass, are sometimes formed using concrete. Pavements are generally provided with joints at predetermined intervals in order to absorb shrinkage during hardening of concrete and expansion and shrinkage due to changes in the surrounding temperature. That is, the joint portions are arranged at predetermined intervals so as to divide the formed concrete pavement, and maintain a gap having a predetermined width between the divided concrete slabs, and have a joint material having elasticity in the gap. Filled and installed, the expansion and contraction of joints caused by the expansion and contraction of each divided concrete slab is absorbed by the elasticity of the joint material, thereby preventing damage to concrete pavement such as crack generation and deformation. is there.

Conventionally, as such a joint material inserted into the joint portion, for example, an asphalt joint plate, a rubber sponge type or a cork type which is disposed and installed in a formwork at the time of concrete casting operation is used. In addition to joint plates such as joint plates, joint grooves are provided in concrete after being cast and cured, and as a joint material injected and filled into the joint grooves, for example, concrete asphalt system, rubberized asphalt system,
An injection joint material such as a rubber resin is used.

According to the latter method of filling and filling the cut joint groove with the injected joint material, the injected joint material adheres well to concrete, is excellent in waterproofness and water resistance, and is filled with the joint groove. Is cut using a concrete cutter, for example, after the concrete has hardened, so there is no step at the joints,
It has such advantages that the flatness and serviceability of the road surface can be easily secured.

[0005]

However, the method of providing the joints in the concrete pavement by injecting and filling the joint groove into the joint groove is to dry the interior of the joint when the joint material is injected into the joint groove. In addition to the fact that it is not possible to work in rainy weather, it is also necessary to drain the water inside after rainfall and forcibly dry it with a burner etc. Injectable joint materials such as asphalt, which are heated and melted and injected into joint grooves, are not easy to handle due to heat and bad smell, and have a problem of poor workability.

[0006] Also, the filler joint material such as asphalt softens when the temperature is high, swells on the surface due to the expansion of the concrete slab, and remains in a state of protruding without being drawn into the groove even when the temperature becomes low. As a result, it may cause shock to vehicles passing through the road surface and cause noise,
There is a problem that it is not preferable in terms of aesthetics.

[0007] Further, an injection joint material such as asphalt is
Since it is highly deteriorated and weak against oils and fats that may spill on the road surface, it has low durability in terms of material, and it is not easy to repair or replace. There is a problem that a piece may enter and hinder expansion and contraction of the joint portion, thereby impairing the joint function.

On the other hand, a gasket known as a packing to be attached to a seam or a joint of a wall in order to prevent water or gas leakage, for example, is applied as a material to replace the filler joint material, and is used for concrete pavement. Although a method of attaching the joint to joints has been considered, even if such a gasket is used as it is for a joint of concrete pavement, it is necessary to construct the joint as a joint material for concrete pavement that requires a long extension and a certain strength. There are various problems in the properties and durability, and therefore, development of a gasket suitable for use as a joint material for concrete pavement is desired.

[0009]

[0010] Therefore, the present invention, it is an object to provide a mounting structure of a gasket that can be exerted effectively its function gasket concrete joint as joint material for concrete pavement.

A further object of the present invention is to provide a gasket mounting apparatus capable of quickly and easily mounting a gasket for a concrete joint to a joint.

[0012]

DISCLOSURE OF THE INVENTION The present invention has been made to achieve the above object, and is a gasket to be inserted and installed in a joint of a concrete pavement, the cross-sectional shape of which is at the top in an installed state. A lid-like surface layer located,
The gasket comprises a partition part extending downward from the lid-like surface part, and a rib part extending a plurality of steps to both sides from the partition part, and a core material supporting a tensile load is provided on the partition part. the concrete joint gasket inserted through arranged in a direction, the intersection of the two directions of the joint portion extending to intersect
Gasket mounting structure for installation in
At the intersection, one of the gaskets is
Cut off the upper part from the position where
And insert the other gasket at the intersection.
And push it into the notch to overlap
Embedded in each gasket by inserting and arranging at joints
The continuity of each gasket is maintained by the
The upper end faces are flush with each other due to the elasticity of each gasket.
Concrete joint characterized by being arranged so that
In the gasket mounting structure .

Here, in the above description, the joint part of the concrete pavement means not only the joint part provided on the pavement surface where substantially the entire area of the road surface is made of concrete, but also the joint part of the asphalt pavement. It also includes a joint provided on a concrete road surface provided as a part.

In the gasket for concrete joint of the present invention, it is preferable to use a graphite fiber as the core material.

Further, in the gasket for concrete joint according to the present invention, each end portion of the rib portion protruding and extending in a plurality of steps and a lower end portion of the partition portion are connected to each other by an outer wall portion. It is preferable that a multi-stage chamber is provided between them.

Furthermore, the gasket for concrete joint according to the present invention is characterized in that:
It is preferable to form a notch groove extending in the extension direction of the gasket.

Further, the gasket for concrete joints of the present invention comprises an ethylene propylene diene monomer (Ethy
It is preferably formed as a molded product of lene propene diene monomer (EPDM).

[0018]

[0019]

[0020]

Another aspect of the present invention is a gasket attachment device for inserting and installing a gasket for a concrete joint into a joint of a concrete pavement,
While rotating along a pair of inclined surfaces that narrow the gap downward, the gap at the lower end is kept substantially the same as the width of the joint, and the gasket is guided to be compressed and clamped within the gap. a pair of guide disks, the guide disc with are disposed along the center of the surface to be sandwiched between the inclined surface rotates, pre Symbol guide the lower end portion thereof lower end portion on the rear extension of the spacing of the disk position An insertion disk that pushes a gasket compressed and held downward within a gap between lower ends of the guide disks immediately after the pair of guide disks. A gasket for a concrete joint, characterized in that a gasket is pushed out and inserted into the joint by the insertion disk while running along the joint. In the door of the mounting device.

[0022]

[0023]

[0024]

According to the concrete joint gasket mounting apparatus of the present invention, if a gasket is inserted between a pair of guide discs, the gasket guided downward with the rotation of the guide discs can be mounted on the guide discs. Is compressed and pinched within the interval of the lower end portion, and is pressed downward by the insertion disk that advances subsequently to be inserted and installed inside the joint portion. That is, by moving the mounting device forward while the guide disk is being moved along the joint, the gasket can be continuously and easily inserted and installed in the joint.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, a concrete mesh according to the present invention will be described.
Ground gasket mounting structure and gasket removal
An embodiment of a gasket used in the attachment device will be described in detail with reference to the accompanying drawings. Conch Lee <br/> preparative joint gasket 10 of this embodiment, for example, concrete pavement which constitutes the road highway formed in the tunnel, a special molding joint to be inserted placed joint portion provided in the vertical and horizontal As shown in FIGS. 1 (a) and 1 (b), the cross-sectional shape is a lid-like surface layer portion 11 located at the top in the installed state, and a central portion of the lid-like surface layer portion 11. Or
A partition wall portion 12 extending in Luo lower side, comprises two stages of the rib portion 13 for each projecting extension inclined from the partition wall portion 12 slightly above to both sides of this, also, the lower end portion of the partition wall portion 12 14 The glass fiber 15 as a core material is inserted and arranged in the central portion of the gasket 10 in the extending direction of the gasket 10.

The gasket 10 can be made of various elastic materials such as rubber and asbestos. In this embodiment, the gasket 10 is made as a molded article of ethylene propylene diene monomer (EPDM). I do. That is, if the gasket 10 is formed using such a material, the EPDM, in addition to its high elasticity and high restoring force, has high resistance to temperature change and small stress relaxation, and also has gasoline, oil, kerosene and freezing. Since it has high durability against a melting agent and the like, and has a high ability to follow the expansion and contraction of the joint, it easily adapts to the movement of the joint, so that the function as the gasket 10 can be stably maintained for a long time. .

When the gasket 10 is inserted and installed in the joint 16 (see FIG. 2), the lid-like surface layer 11 located on the top of the gasket 10 is in close contact with both edges of the opening on the pavement surface of the joint 16. Then, the opening portion is closed, thereby mainly preventing hard pebbles, concrete pieces, and the like that hinder the expansion and contraction of the concrete slab from entering the interior of the joint portion 16. In addition, in the lid-like surface layer part 11,
By providing a cutout groove 17 extending in the direction in which the gasket 10 extends in the central portion of the outer surface thereof, the gasket 10 is easily formed into an arc shape. It is possible to easily follow the deformation at the time and improve the adhesion to the opening of the joint 16.

The partition 12 extending downward from the center of the lid-like surface layer 11 supports the ribs 13 and also has a tensile load when the gasket 10 is attached to the joint 16, and a joint load. After being mounted on the vehicle, it functions as a main part when supporting various loads generated by the vehicle passing on the road surface. The glass fiber 15 is inserted through the lower end portion of the partition wall portion 12, so that the tensile load and other loads at the time of the construction can be effectively and stably supported. In addition, as the core material, other than the glass fiber 15, a core material made of various materials having a linear expansion coefficient due to a temperature change, such as carbon fiber, similar to that of EPDM can also be used. Further, as shown in FIGS. 3A and 3G, the partition 12 supports the rib 13 in accordance with the width of the joint 16 and various other factors at the time of construction or running of the vehicle. Various forms capable of supporting a load can be employed.

Further, the two-stage rib portion 13 projecting from both sides from the partition portion 12 is inserted and arranged in the joint portion 16 while being compressed in the width direction when the gasket 10 is attached. The inner wall surface of the joint 16 is pressed, and the seam is closed for a long time by the stress to prevent water from entering from the joint 16. In this embodiment, the two-stage rib portion 13 constitutes a three-layer water-stop line together with the lid-like surface layer portion 11. However, if the number of the rib portions 13 is appropriately increased, the water-stop function is achieved. Can be further strengthened. Further, in this embodiment, each end portion of the rib portion 13 and the partition wall portion 12 are connected to each other by an outer wall portion 18, and a three-stage chamber 19 is provided between the outer wall portion 18 and the partition wall portion 12.
Is formed, whereby the rib portion 1 is formed.
3 can be elastically deformed by protruding and extending in a stable state and stably pressing the inner wall surface of the joint 16 and increasing the pressing area, so that the width of the joint 16 is large. However, the function of the gasket 10 can be stably maintained, but when the width of the joint portion 16 is small, it is not always necessary to provide the outer wall portion 18 and the multi-stage chamber 19 (see FIG. 3).

The gas for concrete joints of the present invention
Mounting structure of gasket and gasket mounting device
The gaskets for concrete joints used in the present invention are not limited to those of the above-described embodiment, and various types may be used depending on the width of joints 16 and the design strength of the road surface, as shown in FIGS. 3 (a) and 3 (g). Can be used.

The gasket 1 having the above configuration
In order to attach 0 to concrete pavement, prior to such insertion and installation work, as shown in FIG. 2, a predetermined interval, for example, a space of about 5 m, is vertically and horizontally arranged on a concrete pavement surface. The joint portion 16 to be extended is cut and formed. That is, when the concrete pavement 24 cast and formed as cast-in-place concrete hardens, for example, using a concrete cutter, as shown in FIG.
A narrow groove 20 having a width of, for example, about 3 mm and a depth of about 70 mm is cut along 6. The narrow groove 20 also serves as a cutting groove normally formed as an induced joint on the concrete pavement 24. However, a gap has already been formed between the concrete slabs constituting the concrete pavement 24 due to a joint of concrete. If there is, the gap can be formed as the narrow groove 20. And, at the upper end portion of the narrow groove 20,
This portion is widened, and an insertion groove 21 having a width of, for example, about 10 mm and a depth of about 30 mm is cut from the pavement surface by, for example, a double cutting method in which two cutter blades are stacked. As a result, the joint 16 is inserted into the insertion groove 21.
Is formed by two steps of grooves having the bottom surface as a shoulder. According to this embodiment, both edges of the opening of the insertion groove 21 are V-cut using, for example, various types of polishing devices, so that the chamfered portions 22 are provided on both edges.

The gasket 10 having a width of, for example, about 16 mm having the above-described structure is attached to the joint portion 16 formed in this manner by using, for example, a gasket attaching device described later to attach the rib portion 13 in the width direction. By pushing the compressed gasket into the inside of the insertion groove 21, the gasket 10 is easily inserted and installed in the joint 16. The connection in the extension direction of the joint 16 of the gasket 10 can be easily extended and installed, for example, by bonding an end surface of the gasket 10 cut at right angles and flat by an adhesive.

Here, the attached gasket 10
Is a joint 16 formed by two steps of grooves 20 and 21.
When the gasket 10 is excessively inserted into the joint 16 due to a vehicle load or the like from above, the lower end of the gasket 10 is inserted into the insertion groove 21.
And the gasket 10 can be easily prevented from immersing in the joint portion 16. In addition, since the lid-like surface layer portion 11 of the gasket 10 is disposed on the joint portion 16 with its both end portions abutting and contacting the chamfered portion 22, the upper end portion of the gasket 10 protrudes from the pavement surface, and It is possible to easily prevent smooth running. In addition, by providing the V-cut chamfered portion 22, both edges of the opening of the joint portion 16 can be prevented from being chipped and damaged.

On the other hand, in this embodiment, the gasket 10
Will be inserted and installed in the joints 16 formed by cutting vertically and horizontally on the concrete pavement 24, but also at the intersections of the joints 16 extending in the vertical and horizontal directions that intersect.
By configuring as shown in FIG. 4, it is possible to arrange the gaskets 10 so that their upper ends are substantially flush with each other while easily maintaining the continuity of each gasket.

That is, first, a portion of one gasket 10 above the position where the glass fiber 15 is arranged is
The gasket 10 is inserted into the joint portion 16 in a shape corresponding to the cross-sectional shape of the gasket 10, for example, in a notched state of about ／ of the total height so that the notched portion 25 is located at the intersection. Deploy. Then, by inserting the other gasket 10 into the joint portion 16 while pushing the other gasket 10 into the cutout portion 25 at the intersection, the continuity of each gasket 16 is enhanced by the glass fiber 15 embedded in each gasket 16. Each of the gaskets is held, and the upper end surfaces thereof are arranged so as to be substantially flush with each other due to the elasticity of each gasket.

Note that the lower end of the other gasket 10 disposed in the cutout portion 25 is
By appropriately notching the portion below the position where is disposed, it is possible to more easily ensure the uniformity of the upper end surface at the intersection. A filler is appropriately injected into the intersection.

The gasket 10 of this embodiment is
By using the gasket mounting device 30 as shown in FIGS. 5A and 5B, the gasket mounting device 30 can be easily inserted and installed even in the joint portion 16 extending over a long section.

That is, the mounting device 30 used in this embodiment rotates along a pair of inclined surfaces which narrow the space downward, and has a space at the lower end portion having substantially the same size as the width of the joint portion. Are arranged along a central surface sandwiched between the pair of guide disks 31, and the center position thereof is disposed slightly behind the center position of the guide disk 31. And an insertion disk 32.

Here, the guide disc 31 is
Is rotatably supported by a support base 26 which can advance and retreat in a direction perpendicular to the traveling direction of the vehicle. By adjusting the amount of advance and retreat, the interval between the lower end portions is substantially the same as or slightly smaller than the width of the joint 16. The gap is set so that the gasket 10 guided by the rotation of the guide disk 31 is compressed and pinched within the interval of the lower end portion with a width that can be inserted into the joint 16.

On the other hand, the insertion disk 32 has substantially the same size as the guide disk 31, and is rotatably supported by a center shaft located slightly following the center position of the guide disk 31. The lower end portion thereof is located on the rear extension of the interval between the lower end portions of the guide discs 31, whereby the gasket 10 pressed within the interval between the guide discs 31 is sequentially pushed downward immediately after this. Thereby, the gasket 10 is continuously inserted and installed in the joint portion 16.

5 (a) and 5 (b), reference numeral 33 denotes a drive wheel for moving the mounting device 30 forward and backward, reference numeral 34 denotes a front wheel, and reference numeral 35 denotes a joint portion of the mounting device 30. Reference numeral 36 denotes a steering wheel for guiding along the steering wheel 16, reference numeral 36 denotes a steering wheel, and reference numeral 37 denotes a belt for transmitting the driving force from the diesel engine 38 to the guide disk 31 via the pulley 39 and rotating the guide disk 31. .

According to the gasket mounting apparatus 30 having the above-described structure, for example, one end of the gasket 10 is inserted and installed in the joint 16 manually by an operator as a mounting start portion. The mounting device 30 is arranged along the joint 16 with the extension from one end inserted and arranged between the guide disks 31. Thereafter, the guide disc 31 is rotated, and the mounting device 30 is advanced by the guidance of the steering wheel 35 while the lower end of the guide disc 31 is aligned with the upper end opening of the joint 16. The gasket 10 inserted between the
The guide disk 31 is guided downward as the guide disk 31 rotates, and is compressed and pinched within the space between the lower end portions of the guide disk 31, and is pressed downward by the insertion disk 32 advancing subsequently to the inside of the joint portion. The gasket 10 is continuously inserted into the joint area.
6 can be easily and almost automatically inserted and installed.

The apparatus for mounting a gasket for a concrete joint of the present invention is not limited to the apparatus used for mounting the gasket for a concrete joint of the present invention on a joint formed on the concrete pavement surface. It can also be used when inserting various types of gaskets into joints provided in various other concrete structures.

The gasket described above can be used by coloring it in various colors in addition to black. For example, by applying a color similar to the color of the road surface, such as a concrete color, it is possible to prevent the scenery from being impaired. You can also.

[0046]

[0047]

[0048]

As described in detail above, the present invention
According to the mounting structure of the gasket for the concrete joint, by the core material left without being cut, while easily maintaining the strength of each gasket, the upper end surface of the gasket at the intersection is flush. Can be arranged.

Further, according to the gasket mounting device for concrete joints of the present invention, the gasket can be continuously and easily and easily operated by simply moving the mounting device forward while guiding the guide disk along the joints. It can be quickly inserted and installed in the joint.

[Brief description of the drawings]

FIG. 1 (a) shows a concrete according to an embodiment of the present invention.
The mounting structure of the gasket for the REIT joint and the gasket
FIG. 2 is a cutaway perspective view showing a configuration of a gasket for a joint joint used in a mounting device for a joint, and FIG.

FIG. 2 shows a concrete joint according to an embodiment of the present invention.
Gasket mounting structure and gasket mounting
It is a cross-sectional view which shows the structure of the attachment structure of the gasket for concrete joints used for a filling device .

3 (a) to 3 (g) are concrete meshes of the present invention.
Ground gasket mounting structure and gasket removal
It is a cross-sectional view which illustrates the other cross-sectional shape of the gasket for concrete joints used for an attachment apparatus .

FIG. 4 is a cutaway perspective view showing a gasket mounting structure at an intersection of two-way joints extending in an intersecting manner according to an embodiment of the present invention.

5A and 5B are explanatory views showing the configuration of a gasket mounting apparatus according to one embodiment of the present invention, wherein FIG. 5A is a front view, and FIG.
Is a side view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Gasket for joints of concrete joint 11 Cover-like surface layer part 12 Partition part 13 Rib part 14 Lower end part 15 Glass fiber (core material) 16 Joint part 17 Notch groove 18 Outer wall part 19 Room 20 Narrow groove 21 Insert groove 22 Chamfer part 24 Concrete Pavement 25 Notch 30 Mounting device 31 Guide disk 32 Insertion disk

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yukio Ogasa 1-24-1 Minami-Aoyama, Minato-ku, Tokyo Inside Obayashi Road Co., Ltd. (72) Nobuo Suzuki 2-3-3 Kandajicho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo Headquarters (56) References Japanese Utility Model Showa 64-36408 (JP, U) Japanese Utility Model Hei 6-67609 (JP, U) Japanese Utility Model 5-16808 (JP, U) Japanese Utility Model Showa 56-105592 (JP, U.S.A.) U) (58) Field surveyed (Int.Cl. ⁷ , DB name) E01C 11/02 E04B 1/684

Claims (2)

(57) [Claims] 1. A gasket to be inserted and installed in a joint of a concrete pavement, wherein a cross-sectional shape of the gasket is a top surface portion located at a top in an installed state, and a partition portion extending downward from the top surface portion. If consists of a rib portion of each multi-stage protruding extension from opposite sides of the partition wall portion and the partition wall portion, a concrete joint gasket core member was placed through the extending direction of the gasket supporting the tensile load Intersect
To be installed at the intersection of joints extending in two directions
Gasket mounting structure,
And place one of the gaskets at the position where the core material is placed.
Inserted into the joint with the upper part cut away
And the other gasket is cut at the intersection.
Insert it into the joint while pushing it into the notch and overlapping
By arranging, the core material embedded in each gasket
While maintaining the continuity of each gasket,
The upper end faces are flush with each other due to the elasticity of the
Gasket for concrete joint characterized by placing
Mounting structure. 2. A gasket mounting device for inserting and installing a gasket for a concrete joint into a joint part of a concrete pavement, wherein the gasket rotates along a pair of inclined surfaces that decrease the gap downward and has a lower end. A pair of guide disks for guiding the gasket so as to compress and hold the gasket within the space while maintaining a space substantially similar to the width of the joint portion, and a center between the inclined surfaces on which the guide disk rotates. together with is arranged along the surface, before SL located its lower end portion to the rear extension <br/> length on the spacing of the lower end portion of the guide disk, immediately after the pair of guide disks, said guide disk An insertion disk for pushing down the gasket compressed and held within the space between the lower end portions, and the lower end portions of the pair of guide disks are aligned with the joint portions. While traveling Te, mounting apparatus of the concrete joint gasket, characterized in that slide into insert extruded gasket into the joints by the loaded disc.