JPH0788645B2 - Pavement method for road joints - Google Patents

Description

TECHNICAL FIELD The present invention relates to a method for paving road joints.

(Prior Art) Generally, a joint member made of steel or rubber is often installed at a road joint, but it is also possible to make the road joint a blind joint state so that the pavement is continuous across the play space. Has been done.

When installing the above-mentioned joint member, a step-down portion is formed at each of the opposite road ends with a play space, and the joint members are arranged at the center positions of both step-down portions, and concrete is provided at the step-down portions on both sides of the joint member. Generally, a method of driving the concrete up to the height of the road surface and fixing the joint member to the concrete portion is adopted. In this case, it is known that the boundary between the concrete pavement and the bridge pavement is corrugated (see Japanese Utility Model Publication No. 57-2484). Even if one of the two pavements connected with such a wave boundary is worn and a step is generated at the boundary, the tire of the vehicle easily crosses the step obliquely, and a rapid up and down movement of the tire is prevented. Therefore, the running performance of the vehicle is good.

(Problem to be Solved by the Invention) The above-mentioned corrugated boundary is not limited to the case where a joint member is installed, and is adopted even when the material of the road joint pavement and the bridge surface pavement on both sides of the road joint are different in a blind place. However, there is a problem that it is difficult to form the waveform boundary in any case.

That is, when installing joint members at road joints or constructing blind joints, bridge surface pavement shall be continuously applied across the road joints first, and then the road joints of the bridge surface pavement shall be removed and removed. Many post-installation methods are used to install joint members or construct blind spots in these areas. When removing the road joint part of the bridge surface pavement, if the bridge surface pavement is cut into a corrugated shape, the above-mentioned boundary becomes a corrugated shape, but the concrete cutter usually used at that time is to cut straight joints. As a result, it is virtually impossible to make joints in the waveform.

After all, after making a straight joint with a concrete cutter to form an extra wide step-down part, a corrugated formwork is erected in the step-down part and pavement materials are placed on both sides of it. In addition to the need for troublesome work, the above pavement material can be cast into multiple locations on the pavement, and in the case of pavement material that requires rolling compaction, the placement range is extremely narrow, so rolling compaction is extremely difficult. Difficult and cannot expect sufficient compaction.

It is an object of the present invention to use the above-mentioned corrugated form without using
It is an object of the present invention to provide a pavement method for road joints that can easily make the boundary between two pavements corrugated.

(Means for Solving the Problems) In the present invention, a plurality of holes are provided side by side in a pavement previously applied, and when the holes are connected, the hole wall of each hole is a concave portion (or a convex portion) in a wave shape. It was made paying attention to the fact that it can be used as.

That is, the pavement method of the road seam portion according to the present invention is the first pavement that is continuous across the play space from one road facing the other road through the play space with the play space of the road seam portion blocked. Next, a plurality of circular holes are formed in the first pavement so as to be aligned in the longitudinal direction of the road joint on the roads on both sides of the play space. By removing the portions inside the holes arranged in parallel in the longitudinal direction, side walls on the opposite sides of the holes in which arc-shaped portions of the hole walls of the holes facing the clearance side are continuous in the longitudinal direction. And forming a second pavement for the seam portion by forming a step-down portion having a step and placing a post-casting material for the seam portion on the step-down portion.

(Operation) In the above-described pavement method for road joints, a plurality of holes are formed in the first pavement on both sides of the free space so as to be aligned in the longitudinal direction of the road joint, and pavement portions inside the holes on both sides are removed. Since the step-down part is formed by forming the step-down part, a joint member that allows the expansion and contraction of the road is installed in the road-seam part, and the post-punch material is placed behind the joint member to form the second pavement. Alternatively, it is possible to form a second pavement of a blind ground type by placing a post-paving material having higher elasticity than the first pavement so as to be continuous across the play space.

Then, since the side wall of the step-down portion is configured by utilizing the arcuate portion facing the free space side of the hole wall of each hole juxtaposed in the longitudinal direction of the road joint, the hole wall of each hole is formed. Concavities and convexities can be formed on the side wall as concave portions in which the arc-shaped portions are concaved in the direction intersecting the longitudinal direction. Then, since the side wall having the unevenness serves as a boundary between the first pavement and the second pavement applied to the step-down portion, eventually, the boundary has unevenness,
That is, it becomes a waveform. Accordingly, even if one of the first pavement and the second pavement is worn due to rubbing and a step is formed at the boundary portion, the vertical movement of the tire of the vehicle can be reduced and the running performance thereof can be improved. Is.

(Effect of the invention) Therefore, according to the present invention, a plurality of holes aligned in the longitudinal direction of the road joint are formed in each part on both sides of the play in the first pavement, and the pavement material inside the holes on both sides is formed. Is removed to form step-down parts having side walls on both sides of the play, the arc-shaped portions of the hole walls of the holes facing the play-interval side being continuous in the longitudinal direction. Since the second pavement for the seam portion is formed by placing the post-casting material in the joint, it is possible to use the corrugated form without using the corrugated form in both cases of installing the joint member and making the joint blind. The boundary between the first pavement and the second pavement for the seam can be easily formed into a corrugated shape, the number of pavements can be reduced, work efficiency can be improved, and the jointing part of the pavement can be reduced. Good vehicle running performance even if there is a step on the boundary of the pavement The effect of being able to maintain is obtained.

(Example) Hereinafter, the Example of this invention is described based on drawing.

-Example 1-This example is shown in FIGS. 1 to 4 and is an example of construction of a blind joint. In FIG. 1, reference numeral 1 is a clearance between seams formed by road edges 2 and 2 in a road bridge. In the case of this example, a girder is erected on the bridge pier (abutment), the floor slabs 3, 3 are placed, and the free space 1
A cover plate 4 straddling the slab is erected on the upper surfaces of the two floor slabs 3, 3 and a first pavement (bridge surface pavement) 5 is continuously provided across the play space 1. Further, the first pavement 5 is subjected to rolling compaction after the pavement material is placed.

When paving the seam, first, at a position separated from the free space 1 in the bridge length direction, reference lines 6 and 6 extending in the longitudinal direction of the road seam are drawn on the upper surface of the first pavement 5 (marking).
Then, a plurality of holes 7 are formed in the first pavement 5 from above so that the centers of the holes 7 are at the positions of the reference line 6 and are in contact with each other. As a result, the plurality of holes 7 are arranged side by side in the longitudinal direction of the road joint.

For the drilling, for example, the core drill shown in FIG.
Use 13. The core drill 13 includes a column 15 standing on a base 14, a drive unit 17 supported on the column 15 by a support tube 16 so as to be able to move up and down, and a cylindrical core bit coupled to a drive shaft 18 of the drive unit 17. It consists of 19 and. The drive device 17 lowers the core bit 19 while rotating it. Ie. In the case of this core drill 13, the lower end of the core bit 19 is brought into contact with the upper surface of the first pavement 5 and the core bit 19 is rotated and lowered to cut the first pavement 5 into a circle.
After that, the cut portion is extracted upward together with the core bit 19 to form the hole 7 described above.

After the plurality of holes 7 are formed in each of the two reference lines 6 and 6 as described above, as shown in FIG.
The step lowering portion 8 is formed by removing the portion on the side of the play space 1 from each hole 7, that is, the portion between the rows of the plurality of two holes 7. This pavement can be removed by cutting the pavement with a rock drilling machine, and by removing the pavement portion between the reference lines 6 and 6, the side walls 8 of the step-down portion 8 facing each other can be removed.
The a and 8a are formed by a part of the hole wall of each hole 7 (a circular arc-shaped portion facing the free space 1 side), and the hole wall portion is concave and convex in the bridge length direction.

Next, the cover plate 4 of the play gap 1 is removed, and the seal member 10 of the play gap 1 is supported on the step-down portion (the floor slab upper surface) 8 as shown in FIG.
A pavement material is cast on the step-down portion 8 and the seal member 10 to form the second pavement 11. Therefore, the side walls 8a, 8a facing each other of the step-down portion 8 serve as a boundary between the first pavement 5 and the second pavement 11, and this boundary has an uneven shape, that is, a corrugated shape corresponding to the side wall 8a. In this case, the second pavement 11 may be formed of the same pavement material as that of the first pavement 5 or a different pavement material.

Example 2-This example is shown in FIGS. 5 and 6.

That is, this example is a method of obtaining a waveform boundary having a shape different from that of the first embodiment. First, at a position separated from the play space 1 in the bridge length direction, the first pavement 5 is provided with a cut 21 extending in the longitudinal direction of the road joint. This cut 21 can be formed using a concrete cutter. Next, the first
From the upper side of the pavement 5, a plurality of holes 7 are drilled at intervals in the longitudinal direction of the road joint so that the holes 7 are connected to each other at the cuts 21.

Then, the cut 21 of the first pavement 5 and the portion on the free space 1 side of each hole 7 are removed to form a step-down portion.
Pavement material is placed on this step-down section in the same manner as
Form 22. Therefore, in the case of this example, the first pavement 5 and the second pavement 5
The boundary of the pavement 22 has a corrugated shape formed by the cut 21 and the side wall of each hole 7.

In this example, the cut 21 is made to pass through the center of each hole 7, but it may be made to pass through a position deviated from the center. Further, the cut 21 may be formed so as to connect the holes 7 after forming the holes 7.

-Example 3-This example is shown in FIGS. 7 to 9 and is an example in which a joint member is installed at a road joint.

That is, as shown in FIG. 7, first, the cover plate 6 of the play space 1 is attached to the notch box cutout portions (formed by forming a mold when placing the floor slab) 25, 25 formed in the floor slabs 3, 3. It is provided and packed with crushed stones 27, and the first pavement 5 is continuously applied in the same manner as in the first embodiment.
To draw a plurality of holes 7. Next, as shown in FIG. 8, the portion on the free space 1 side of each hole 7 of the first pavement 5, the crushed stone 27 and the cover plate 26 are removed to form a step-down portion 28. Therefore, this step-down portion 28 has a bottom surface of two upper and lower steps by the hole 7 and the notch box cutout portion 25, and only the upper portion of the side wall 28a is formed in an uneven shape by a part of the hole wall of each hole 7. It will be.

Then, as shown in FIG. 9, a joint member 29 is provided at a position corresponding to the play space 1 and cement concrete or the like is placed on the back portion thereof, that is, the step lowering portion 28 to make a second pavement.
Forming 30.

The joint member 29 of this example has a seal member interposed between a pair of corrugated plates, but other types of joint members such as a rubber top joint may be installed. Further, the boundary between the first pavement 5 and the second pavement 30 may be one in which arcs and straight lines are alternately provided in accordance with the construction example of the second embodiment.

[Brief description of drawings]

The drawings show the embodiments of the present invention, and FIGS. 1 to 4 relate to the first embodiment. FIG. 1 is a partially sectional perspective view showing a road joint at the stage of drilling, and FIG. FIG. 3 is a view similar to FIG. 1 at the pavement removal stage, FIG. 4 is a view similar to FIG. 1 showing the completion of construction, and FIG. 6 is a plan view of the road joint at the drilling stage in Example 2, FIG. 6 is a plan view of the road joint showing the construction completion state of the same example, and FIGS. 7 to 9 are FIGS. It is a figure corresponding to a figure and FIG. 1 ... Yuma, 2 ... Road edge, 3 ... Floor slab, 5 ... First
Pavement, 7 ... hole, 8,28 ... step lowering part, 8a, 28a ... side wall,
11,22,30 …… Second pavement

Claims (1)

[Claims] 1. A continuous first pavement is applied across the play space from one road facing the other road through the play space in a state where the play space of the road seam portion is closed, and then, on both sides of the play space. On the road, a plurality of circular holes are formed in the first pavement so as to be lined up in the longitudinal direction of the road joint, and the holes are juxtaposed in the longitudinal direction of the road joints on both sides of the play in the first pavement. By removing the inner portion, a step-down portion having a side wall in which arc-shaped portions of the hole walls of the holes facing the clearance side are continuous in the longitudinal direction on both sides of the clearance, A pavement method for a road seam, which comprises forming a second pavement for a seam by placing a post-casting material for the seam on the step-down portion.