JPH08226103A - Concrete surface layer structure - Google Patents

Abstract

PURPOSE: To provide a concrete surface layer structure capable of preventing the appearance of a slippery condition, and ensuring high abrasion resistance. CONSTITUTION: An expanded metal plate 13 is superposed on the surface of a concrete floor slab 10, and half buried in the surface layer thereof. Also, a plurality of anchor pins are projected from the reverse side of the plate 13, and deeply sink into the slab 10. Furthermore, concrete bare surface is exposed to many mesh holes of the plate 13. Also, the upper side of the plate 13 is projected from the surface of the slab 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention is useful for non-slip,
The present invention relates to a concrete surface layer structure having excellent wear resistance.

[0002]

2. Description of the Related Art In a three-dimensional parking lot for automobiles, a plurality of parking floors are formed, and these parking floors are connected to each other through an inclined road. On this sloping road, the tires of automobiles are slippery and the tires are often slipped. For this reason, the surface of the concrete on the sloped road is roughened, or small irregularities are formed on this surface,
It sometimes prevented the tires from slipping.

[0003]

However, when an automobile runs on a sloping road, since the rotating torque applied to the tire is large, the friction between the tire and the concrete surface is large, and not only the tire but also the concrete surface is worn. Easy to do. Therefore, there is a problem in that even if the surface of the concrete is roughened, or if small irregularities are formed on this surface, these are scraped off.

Therefore, an object of the present invention is to provide a surface layer structure of concrete which is hard to slip and is excellent in abrasion resistance.

[0005]

In order to solve the above problems, the surface layer structure of concrete of the present invention has a structure in which a metal plate having a large number of holes is superposed on the surface of concrete.
This metal plate is half-buried in concrete.

[0006]

According to the present invention, a metal plate having a large number of holes is superposed on the surface of concrete, and the metal plate is partially buried in the concrete. Therefore, the surface of the concrete is covered with the metal plate, and the surface of the concrete is exposed inside the holes of the metal plate. The concrete surface and the edges of each hole in the metal plate help prevent slippage. In addition, the metal plate suppresses abrasion of concrete.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

The surface layer structure of the concrete of this embodiment is
For example, it is applied to the floor of a multi-storey parking lot as shown in FIG.
This multi-storey car park has a three-story structure, and a parking floor 1 on the ground floor, a parking floor 2 on the second floor, a parking floor 3 on the third floor, and a sloped track connecting the parking floors 1 and 2 with each other. Four
And a sloped road 5 that connects the parking floors 2 and 3 to each other.

Each parking floor 2, 3 and each sloped road 4, 5
Builds a skeleton 6 by combining a large number of steel columns 7 and beams 8 and 9 on the parking floor 1 on the ground floor, and installs a large number of concrete floor slabs 10 between the beams 8 and 9. It becomes.

As the concrete floor slab 10, a precast plate (PC plate) in which stress is introduced by pre-tensioning and post-tensioning is used as shown in FIG. Arrangement 1
It is the one that embedded 2.

The concrete floor slab 10 is provided with the concrete surface layer structure of this embodiment, and has the features of the present invention.

That is, as shown in FIG. 2, an expanded metal plate 13 is superposed on the surface of the concrete floor slab 10, and as shown in FIG. 3, the expanded metal plate 13 is partially embedded in the surface layer of the concrete floor slab 10. ing. A plurality of anchor pins 14 are projectingly provided on the back surface of the expanded metal plate 13, and these anchor pins 14 deeply sink into the concrete floor slab 10. The expanded metal plate 13 is firmly integrated with the concrete floor slab 10 by these anchor pins 14.

The expanded metal plate 13 is a net-shaped metal plate that has been subjected to rust prevention treatment. The ground surface of the concrete is exposed in a large number of mesh holes of the expanded metal plate 13. Further, the expanded metal plate 13 has a structure in which a large number of thin strip steels intersect with each other, but these thin strip steels are inclined with respect to the expanded metal plate 13.
Therefore, it can be said that the expanded metal plate 13 is not uniformly smooth and has irregularities at the periphery of each mesh. Each strip of the expanded metal plate 13 has an upper edge protruding from the surface of the concrete floor slab 10.

In short, on the surface of the concrete floor slab 10, the upper edges of the strip steels of the expanded metal plate 13 are exposed in a mesh shape, and the ground surface of the concrete is exposed in the holes of each mesh.

The concrete floor slab 10 is formed using a mold for concrete molding. The expanded metal plate 13 is pressure-bonded to the surface of the concrete floor slab 10 in the formwork, and the expanded metal plate 13 is partially buried. Further, the concrete slab 10 is formed into a rectangular shape having a rated size by the formwork. As shown in FIG. 4, several rectangular floor slabs 10 are attached between the beams 8 and 9 of the frame 6.

As shown in FIG. 2, a plurality of recesses 15 are formed at predetermined intervals on the side piece of the concrete floor slab 10. Joint fittings 16 in these recesses 15
Is attached.

As shown in FIGS. 5 and 6, the joint fitting 16 is composed of a bottom plate 17 and three side plates 18, and the side plates 18 on both sides are embedded in the concrete of the concrete floor slab 10 to form the reinforcing bar 12 of the bar arrangement 12. It is fixed to the tip.
Further, elongated bolt holes 19 and 20 are formed in the bottom plate 17 and the front side plate 18.

In order to attach the concrete floor slab 10 to the skeleton 6 using the joint fittings 16, as shown in FIG. 7, each of the joint fittings 16 and 1 is mounted on the beam 8 of the skeleton 6.
6 bottom plates 17, 17 are placed on the beam 8 and the bottom plates 17, 1
7 are fastened and fixed by respective bolts 21 and 21. Also, each butted joint fitting 16, 16
The side plates 18, 18 are fastened with respective bolts 21, 21 to connect the floor slabs 10, 10 on both sides to each other, and then the recesses 15, 15 are filled with mortar to be integrated.

Also, with each concrete slab 10 alone,
Connect with each other. As shown in FIG. 8, each joint fitting 1
The side plates 18, 18 of 6, 16 are fastened with bolts 21 to connect the floor slabs 10, 10 on both sides to each other, and the recesses 15, 1,
Fill 5 with mortar.

As described above, in the multi-storey parking lot, the sloped roads 4 and 5 and the parking floors 2 and 3 are formed by the concrete floor slabs 10.
As mentioned above, the surface of the expanded metal plate 1
The net-like edges of No. 3 are exposed, and the concrete surface is exposed in the holes of each mesh. Here, expanded metal plate 13
The mesh edge and the concrete ground surface of the holes of each mesh increase the friction of the surface of the concrete floor slab 10, so that the slip and idling of the automobile tire are prevented. Further, since the net-like edges of the expanded metal plate 13 are exposed, the concrete floor slab 10 is less likely to wear.

On the other hand, since the concrete floor slab 10 is molded in the mold as described above, it is suitable for mass production and can be provided at a low price. It also makes it possible to keep the cost of manufacturing parking lots low.

In this embodiment, the expanded metal plate is exemplified, but the invention is not limited to this, and a punching metal plate may be used. In short, any metal plate having many holes can be applied. Further, the rust prevention treatment of the metal plate and various surface treatments may be appropriately performed,
It can be omitted if not required.

Further, here, the concrete floor plate made of the precast plate is exemplified, but the surface layer structure of the present invention can be applied to the surface of any kind of concrete. Further, the present invention can be applied not only to the floor of the parking lot but also to any place as long as slip resistance and abrasion resistance are required.

[0024]

As described above, according to the present invention, the surface of concrete is covered with the metal plate, and the surface of the concrete is exposed inside the holes of the metal plate. The concrete ground and the edges of each hole in the metal plate help prevent slippage, and the metal plate reduces the wear of the concrete.

[Brief description of drawings]

FIG. 1 is a perspective view showing a multilevel parking lot in which a surface layer structure according to an embodiment of the present invention is applied to a concrete floor slab.

FIG. 2 is a plan view showing the concrete floor slab of FIG.

3 is a cross-sectional view showing the concrete floor slab of FIG.

FIG. 4 is a plan view showing a state in which the concrete floor slab of FIG. 1 is attached to a frame of a multilevel parking lot.

FIG. 5 is a cross-sectional view taken along line I-I of FIG.

6 is a perspective view showing the joint fitting of FIG.

FIG. 7 is a cross-sectional view showing a connection structure between each floor slab and a frame.

FIG. 8 is a cross-sectional view showing the mutual connection structure of each floor slab.

[Explanation of symbols]

 1, 2, 3 Parking floors 4, 5 Sloping tracks 6 Frames 7 Struts 8 Struts 8, 9 Beams 10 Concrete floor slabs 11 Concrete layers 12 Reinforcing bars 13 Expanded metal plates 14 Anchor pins 16 Joint fittings

Claims (3)

[Claims] 1. A surface layer structure of concrete in which a metal plate having a large number of holes is superposed on the surface of concrete, and the metal plate is half-embedded in the concrete. 2. The surface layer structure of concrete according to claim 1, wherein a plurality of anchors that sink into the concrete are provided on the back surface of the metal plate. 3. The surface layer structure of concrete according to claim 1, wherein the metal plate has a large number of irregularities, and the edges of the holes of the metal plate protrude from the surface of the concrete.