JP2829944B2 - Precast concrete slab for parking lot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a precast concrete slab for a parking lot, and more particularly to a precast concrete slab for a parking lot used in a multi-story parking garage having two or more floors.

[0002]

2. Description of the Related Art This type of multi-story parking lot has been actively constructed due to difficulties in securing a parking space in an urban area and the like, and an increase in the number of vehicles owned. Conventional multi-storey parking floors are constructed from cast-in-place concrete, but steel floor slabs, which are easy to construct on site, have been used in response to demands such as labor saving and shortening construction time. It is becoming. In the case of concrete, as shown in FIG. 10, a precast concrete slab 2 serving also as a formwork is laid on a support 1 made of a transverse beam such as a steel material.
There is also known a method in which a reinforcing bar 3 is assembled on site and a drain pipe 4 is piped, and then a cast-in-place concrete 5 is cast to form a concrete floor slab 6.

[0003]

When the above-mentioned steel slab is used as a floor slab in a parking lot, there is a problem of noise generated when the vehicle is running, a problem of durability of members due to generation of rust, and the like.
Further, there is a problem that a drainage facility must be separately provided on the top floor or the like exposed to rain and wind. In addition, in the case of the above-mentioned concrete, since the work of assembling the reinforcing bar 3 and the pipework of the drain pipe 4 are required on site, it is hard to say that labor saving and shortening of construction time have been sufficiently performed on site. Was. Furthermore, the conventional concrete floor slab 6
Although it is based on a composite beam composed of the precast concrete slab 2 and the cast-in-place concrete 5, the completed floor slab 6 is relatively thick and the weight of the member increases, so that the support 1 also needs a large strength. was there.
Further, the reason why the concrete floor slab 6 becomes relatively thick is that the surface of the concrete slab 6 is cut off or cracked by long-term running of the vehicle and the reinforcing bar 3 comes into contact with the outside air, and the reinforcing bar 3 rusts. In order to prevent corrosion, concrete covering more than a predetermined amount is required, and there is a problem that the floor slab becomes thick.

Accordingly, an object of the present invention is to provide a precast concrete slab for a parking lot which is excellent in strength and can be reduced in weight, and is also excellent in assembling workability. An object of the present invention is to provide a precast concrete slab for a parking lot which is excellent in drainage property.

[0005]

According to a first aspect of the present invention, there is provided a substantially flat floor slab body which is laid between support members and has reinforcing fibers embedded therein, and a lower surface on both sides in the width direction of the floor slab body. And a reinforcing rib formed between the mounting ribs in the length direction to be mounted on the support, and one width direction side of the adjacent floor slab main body. A joining protrusion is formed on the edge, a joining groove is formed on the other width direction side edge to engage with the joining protrusion, and a step-like groove is formed on the width direction side upper surface of the adjacent floor slab main body. And vertical drain grooves are formed by joining the adjacent floor slab bodies.

According to a second aspect of the present invention, there is provided a method according to claim 1, wherein a vertical drain groove formed in the longitudinal direction formed by the step-like groove and a horizontal drain groove formed in the width direction provided on both upper surfaces in the longitudinal direction of the floor slab main body. Is provided with a semicircular groove for vertical installation of a drain pipe.

According to a third aspect of the present invention, a supply path duct for ancillary equipment is buried over the entire length of the placing rib on the lower surface of the floor panel main body.

[0008]

In the structure of the first aspect, ribs (reinforcing) in the length direction and the width direction formed between the mounting ribs are formed,
By embedding the reinforcing fiber carbon fiber in the floor slab body, the strength of the floor slab body is improved, and the concrete covering thickness from the reinforcing bar to the upper surface of the floor slab body can be reduced. Can be thin. Furthermore, when laying the adjacent floor slab main bodies together, the positioning projections and the bonding grooves engage with each other to accurately position and connect the floor slab main bodies, thereby facilitating the bonding between the floor slab main bodies. In addition, a step-shaped groove is provided in advance around the upper surface of the floor slab main body, and the drain slab is formed when the floor slab main bodies are joined to each other.

According to the second aspect of the present invention, a semicircular groove for vertical installation of a drainage pipe is provided in advance at a crossing point of a vertical drainage groove in the length direction and a horizontal drainage groove in the width direction formed by the step-like groove. This eliminates the need for construction around drainage at the site.

According to the third aspect of the present invention, since the duct is formed in the floor slab in advance, it is possible to connect the electric wire inserted into the duct to the auxiliary equipment or to connect the auxiliary equipment to the duct. it can.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 6 show a first embodiment of the present invention, in which a precast concrete slab 11 of the present invention constitutes a floor of a multi-storey parking garage of two or more floors, as shown in FIG. Are laid on vertical and horizontal supports 10T and 10Y provided on a vertical structure (not shown) such as a pillar, and these supports 10T and 10Y are formed of H steel cross beams. I have.

The precast concrete floor slab 11 is provided on the lower surface on both sides in the width direction of a plate-like floor slab body 12 having a substantially rectangular plane, and a longitudinal rib 13 for mounting in the longitudinal direction to be mounted on the vertical supports 10T. , 13 are protruded, and a reinforcing vertical rib 14 is protruded in the longitudinal direction at the center between the mounting vertical ribs 13, 13. Width horizontal mounting rib 1 mounted on 10Y
5 and 15 as well as these mounting horizontal ribs 15,
15, a widthwise intermediate mounting rib 16 to be mounted on the horizontal support 10 </ b> Y protrudes, and a widthwise reinforcing horizontal rib 17 protrudes between the horizontal ribs 15, 16. . Further, reinforcing members 18 and carbon fibers 19 are buried in the floor slab main body 12, and the carbon fibers 19 are located at upper positions of the reinforcing bars crossing vertically and horizontally in the floor slab main body 12.
In this example, carbon fibers 19 are embedded over substantially the entire length of the floor slab body 12 in the longitudinal direction. As shown in FIGS. 1 to 3, joining projections 20 and projections 2 are provided on both sides of the concrete slab 11 in the width direction at joints of the slab main bodies 12, 12 laid next to each other.
And a joining groove 21 with which the engaging groove 0 engages. The joining protrusion 20 and the joining groove 21 have a trapezoidal cross-section and a flat trapezoidal shape, and the longitudinal width of the joining groove 21 is formed larger than the longitudinal width of the joining protrusion 20.

The upper surface 12A of the floor slab main body 12 is formed so as to be slightly inclined from the center in the width direction and the length direction toward both sides thereof. Step-shaped grooves 22A formed in 12, 12
The floor slab is formed by forming a concave vertical drain groove 22 formed by abutting and joining the 22A, and forming widthwise horizontal drain grooves 23 on both sides in the length direction. 12 at the joint, the adjacent floor slabs 12, 1
The vertical drain grooves 22 are formed by abutting the two step-like grooves 22A, 22A. As shown in FIGS. 5 and 6, drain pipes 24 are vertically provided at intersections of the vertical and horizontal drain grooves 22 and 23, and the drain pipes 24 have upper portions formed on the bottom surfaces of the drain grooves 22 and 23. And the bottom is rib 1
It protrudes below 3,15. Also, the adjacent floor slab 1
The drain pipe 24 provided between the stepped grooves 22A, 22A of the first and the eleventh is provided with semicircular grooves 25 formed on the edge of the floor slab 11,
It is arranged and attached between 25.

Next, a method of constructing the floor slab 11 will be described. As shown in FIG. 3, for example, four slab main bodies 12 are laid as a set on the vertical and horizontal supports 10T and 10Y, and adjacent floors are laid. The plate main bodies 11, 11 are positioned and engaged by the joint protrusions 20 and the joint grooves 21, and the four vertical and horizontal supports 10 are provided.
A gap between the partition plate 26 protruding above the T and 10Y is filled with an elastic joint material 27 such as rubber. Also,
When the laying of the floor slab 11 is completed, a drain groove 22 composed of stepped grooves 22A, 22A is formed on the upper surface of the joint between the adjacent floor slabs 11, 11. In the floor slab 11 formed in this way, the reinforcing vertical ribs 14 and the horizontal ribs 15, 16, 17 formed between the mounting vertical ribs 13, 13 are provided, so that the vertical supports 10T, 10T are provided. Can be relatively widened, and the thickness of the floor slab main body 12 can be reduced. For example, in the illustrated example, the interval between the vertical supports 10T, 10T is 1.25 meters, and the interval between the horizontal supports 10Y, 10Y is 3
Meters, the thickness of the floor slab main body 12 is suppressed to about 6 cm.

As described above, in the present embodiment, by adopting the configuration of claim 1, the substantially flat floor slab main body 12 laid between the vertical supports 10T, 10T and having the reinforcing fiber carbon fibers 19 embedded therein is provided. Vertical ribs 13 which are provided on the lower surface on both sides in the width direction of the floor slab main body 12 and which are longitudinal mounting ribs to be mounted on the vertical supports 10T, 10T; It includes a reinforcing longitudinal rib 14 and a reinforcing horizontal rib 17 which are reinforcing ribs in the length direction and the width direction formed therebetween, and has a joint protrusion 20 on one widthwise side edge of the adjacent floor slab main body 12. At the same time, a joining groove 21 for engaging with the joining protrusion 20 is formed on the other width direction side edge, and a stepped groove 22A is provided on the width direction side edge upper surface of the adjacent floor slab main body 12. , The adjacent front floor slab bodies 12, 1
Since the vertical drain grooves 22 are formed by joining the two, the strength of the floor slab main body 12 is improved, and the floor slab 11 is formed.
Is lighter and the workability is improved. Further, since the carbon fibers 19 serving as reinforcing bars have rustproof properties, as shown in FIG. 1, the distance H between the carbon fibers 19 and the upper surface 12A of the precast concrete floor slab 11 can be reduced, The thickness of the floor slab main body 12 can be reduced while the reinforcing bars are buried. In addition, the engagement between the joint protrusion 20 and the joint groove 21 eliminates the necessity for the construction of a laterally tightened steel material or the like, thereby saving labor in the construction. That is, in the conventional floor slab, the upper surface is shaved by running the vehicle, or the reinforcing bar may be corroded due to cracks or the like. By using the carbon fiber 19 having the property, it is possible to reduce the thickness of the concrete covering, thereby making it possible to make the floor slab main body 12 thin.

Further, in the structure of the second aspect, the longitudinal drainage grooves 22 formed in the longitudinal direction formed by the step-like grooves 22A, 22A, and the lateral drainage grooves provided in the widthwise direction provided on both upper surfaces in the longitudinal direction of the floor slab main body. Since a semicircular groove 25 for vertically installing the drainage pipe is provided at the intersection with 23, the semicircular groove 25 can be formed at the same time as the floor slab main body 12 is molded at a factory in advance. The construction around the drainage at the laying site becomes unnecessary.

Further, the lattice structure of the vertical and horizontal ribs 13, 14, 15, 16, 17 protruding from the lower surface of the floor slab main body 12 provides higher strength. Further, since the joining groove 21 is formed wider than the joining protrusion 20, the heat shrinkage of the floor slab 11,
Can absorb expansion. Furthermore, since the drain pipes 24 are vertically installed at the corners of the floor slab 11 and the semicircular grooves 25 for the drain pipes 24 are vertically installed, the construction around the drain at the site becomes almost unnecessary, Is the step-shaped groove 22
Since A is formed, the drain groove 22 can be formed by abutting the stepped grooves 23A, 23A.

FIG. 7 shows a second embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. 12 is formed so that the upper surface 12A becomes lower toward the drain grooves 22 and 23, and the periphery of the upper surface 12A and the bottom surface of the drain grooves 22 and 23 are flush with each other. Thereby, rainwater and the like are favorably collected on the drain grooves 22 and 23 side.

FIGS. 8 and 9 show a third embodiment of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. This is an example in which auxiliary equipment is provided in the lower surface recess 31 of the floor slab 11 formed therebetween, and an illumination light 32 and a sprinkler 33 are illustrated as the auxiliary equipment. The vertical ribs 13 for placing the floor slab 11 have supply ducts 3 over their entire length.
4 and 35 are buried, and at both ends of the ducts 34 and 35, connection openings 34A,
35A are formed. Each of the ducts 34 and 35 has a supply path branch duct 36 that branches to the center of the floor slab 11.
37 are formed. The ducts 34 and 35 and the branch ducts 36 and 37 are formed when the floor slab 11 is molded.

An electric wire 38 as a supply path is inserted into the duct 34 and the branch duct 36, and the electric wire 38
Is connected to the illumination light 32, the electric wire 38 is connected to a power source (not shown), and the sprinkler 33 has
While connecting the branch duct 37 consisting of a pipe,
The supply path duct 35 is connected to a hydraulic pump (not shown). The ducts 34, 35 and branch ducts 36, 3
7 is formed at the time of molding the floor slab 11, furthermore, at the time of manufacture of the factory or before the laying of the floor slab 11, the auxiliary equipment is fixed to the lower surface recess 31 in advance and connected to each supply path. After that, the floor slab 11 may be laid. In the case of the sprinkler 33, the duct 35 and the branch duct 37 serve as water supply paths.

As described above, this embodiment has the same operation and effects as those of the first embodiment.
The mounting ribs 13, 15, 1 on the lower surface of the floor plate main body 12.
6 is a supply duct 3 for ancillary equipment over its entire length.
4, 35, 36, 37 are buried, so that the electric wire 38 is inserted through the supply path ducts 34, 36 so that the lighting lamp 3
2 or supply ducts 35, 3
7. Sprinklers 33 can be operated by flowing water through them. Conventionally, wiring and pipes are separately provided on the lower surface of the floor slab, but they are not exposed to the outside, and the connection work of them is easily performed. It can be carried out.

Further, the illumination light 32 and the sprinkler 3
3 is fixed to the lower surface recess 31 in advance, and the floor slab 11 is laid after being connected to each supply path.
Only the work of connecting the supply path to the outside at 4A and 35A is sufficient, and the work of attaching the incidental equipment can be greatly reduced. The lower surface of the floor slab 11 has a lower surface recess 31 formed by a rib. Therefore, the incidental facilities do not protrude below the lower surfaces of the mounting vertical and horizontal ribs 13 and 15, so that the incidental facilities can be prevented from hitting the outside during the laying work and being prevented from hindering the work.

It should be noted that the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. It may be formed over the entire length. Further, as ancillary equipment, a smoke sensor or the like may be used. In this case, a conductor connected to the smoke sensor may be inserted into the ducts 34 and 36 for use. Further, the supply path duct may be embedded in the lateral rib.

[0024]

According to the first aspect of the present invention, there is provided a substantially flat floor slab body in which carbon fibers serving as reinforcing bars are buried between support members and provided on the lower surface on both sides in the width direction of the floor slab body. A lengthwise mounting rib to be mounted on the support, and a reinforcing rib formed between the mounting ribs, and a joining protrusion is provided on one widthwise side edge of the adjacent floor slab main body. And a joint groove for engaging with the joint protrusion is formed on the other width direction side edge, and a step-like groove is provided on the width direction side edge upper surface of the adjacent floor slab main body. A vertical drain is formed by joining the matching floor slab bodies. As a result, the rust resistance of the reinforcing bars is improved, and the strength of the floor slab body is further improved. Therefore, the thickness of the concrete covering from the reinforcing bars to the upper surface of the floor slab body can be reduced, so that the weight of the floor slab body itself is reduced. Is achieved. Further, when the floor slab is laid, the work is easy because the positioning projections and the connection grooves can be accurately positioned and connected by engagement with the connection grooves. In addition, it is possible to provide a precast concrete slab for a parking lot that can be easily constructed around a drainage site.

According to a second aspect of the present invention, there is provided a method according to claim 1, wherein a vertical drain groove in the longitudinal direction formed by the step-shaped groove and a horizontal drain groove in the width direction provided on both upper surfaces in the longitudinal direction of the floor slab main body. Is provided with a semicircular groove for vertical installation of a drain pipe, so that it is not necessary to construct around the drain at the site, and it is possible to provide a precast concrete slab for a parking lot excellent in drainage.

According to a third aspect of the present invention, in the above-mentioned placing rib on the lower surface of the floor panel main body, a supply path duct for ancillary equipment is buried over the entire length thereof, and an electric wire is inserted through this duct to illuminate. It is possible to provide a precast concrete floor slab for a parking lot that facilitates construction of various ancillary facilities, such as wiring of a light or the like, and water of a sprinkler can be made to flow using this duct.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view in a width direction of a floor slab showing a first embodiment of the present invention.

FIG. 2 is a plan view of the floor slab showing the first embodiment of the present invention.

FIG. 3 is a plan view showing a first embodiment of the present invention in a state where floor slabs are laid.

FIG. 4 is a longitudinal sectional view of the floor slab showing the first embodiment of the present invention.

FIG. 5 is a plan view of a drain groove of the floor slab showing the first embodiment of the present invention.

FIG. 6 is a sectional view of a main part of the floor slab showing the first embodiment of the present invention.

FIG. 7 is a sectional view of a main part of a floor slab showing a second embodiment of the present invention.

FIG. 8 is a cross-sectional view in a width direction of a floor slab showing a third embodiment of the present invention.

FIG. 9 is a plan view of a floor slab showing a third embodiment of the present invention.

FIG. 10 is a sectional view of a conventional concrete slab.

[Explanation of symbols]

 10T Vertical support (support) 11 Precast concrete floor slab 12 Floor slab 13 Mounting vertical rib (mounting rib) 14 Reinforcement vertical rib (reinforcement rib) 17 Reinforcement horizontal rib (reinforcement rib) 19 Carbon fiber (reinforcing bar) 20 Joint protrusion 21 Joint groove 22 Vertical drain groove (drain groove) 22A Step-shaped groove 23 Horizontal drain groove (drain groove) 25 Semicircular groove 32 Lighting (attachment equipment) 33 Sprinkler (attachment equipment) 34 35 Supply path duct 36 37 Supply path branch duct (supply path duct)

Claims (3)

(57) [Claims] 1. A substantially flat floor slab main body which is laid between supports and has reinforcing fibers embedded therein, and which is provided on the lower surface on both sides in the width direction of the floor slab body and mounted on the support. It has a mounting rib in the length direction and a reinforcing rib formed between these mounting ribs, and forms a joining projection on one widthwise side edge of the adjacent floor slab body, and the other. A joining groove that engages with the joining protrusion is formed on the width direction side edge, and a step-like groove is provided on the width direction side edge upper surface of the adjacent floor slab main body, and the adjacent floor slab main bodies are joined. A precast concrete floor slab for a parking lot, characterized by forming a vertical drainage groove. 2. A vertical drain pipe is provided at a crossing point between a longitudinal vertical drain formed by the step-like groove and a horizontal lateral drain provided on both upper surfaces in the longitudinal direction of the floor slab main body. The precast concrete slab for a parking lot according to claim 1, wherein a semicircular groove portion for installation is provided. 3. The precast concrete floor plate for a parking lot according to claim 1, wherein a supply path duct for ancillary equipment is buried in the placing rib on the lower surface of the floor plate main body over its entire length. .