JPH08105145A - Double floor structure - Google Patents

Abstract

PURPOSE: To lay pipes on the lower floor member, by providing lower floor members on the lower flange of a beam and laying the upper floor members on the upper part of the upper flange of the beam to form a space between the upper floor member and the lower floor member. CONSTITUTION: Lower floor members 8 having the length and width corresponding to the separated distance of the webs 5 of beams 2 parallelly arranged in both lengthwise and breadthwise directions respectively, are placed on the lower flange 4 of the beam 2 constituting a piping pit zone 7. Side plates 9 having the length corresponding to the width and length of the lower floor member 8 respectively, are provided at the four sides of the piping pit zone 7 and fixed thereto. Mortar 17 having the thickness corresponding to the thickness of the intermediate plate 15 and the frame plate 16 is laid at the outside of the frame plate 16 and on the floor slab 10. The upper floor member 18 is laid on the upper part of the intermediate plate 15, the frame plate 16 and the mortar 17.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor structure for constructing piping and electric wiring on a floor of a building, and more particularly to a double floor structure having a double floor.

[0002]

2. Description of the Related Art In general equipment piping according to the prior art, piping used on a certain floor is arranged behind the ceiling on the lower floor.
Therefore, there is a drawback that the sound of drainage water from the upper floor is likely to be heard in the lower floor and that the construction cannot be performed unless the ceiling of the lower floor is destroyed even when the facility piping is changed, added, or maintained.

As a design considering the above-mentioned drawbacks of the prior art, as disclosed in Japanese Patent Laid-Open No. 4-254657, there is a construction method in which a floor slab is cast in an inverted T shape to form a double floor structure. is there. In this construction method, the floor slab is cast in an inverted T shape, the floor finishing material is supported on the protruding slab, a space is secured between the floor finishing material and the floor slab, and piping is provided in the space. Is.

[0004]

However, the above-described conventional construction method has a drawback in that the number of on-site man-hours and costs are significantly increased as compared with the construction method in which the floor slab is laid flat.

The double floor structure according to the present invention improves the workability and work quality of complicated and troublesome piping work, and
It is an object of the present invention to provide a double-floor structure that can easily perform maintenance when a trouble occurs in a pipe or the like after completion and can improve the quality of maintenance, and can reduce the number of on-site man-hours and costs.

[0006]

In the double floor structure according to the present invention, a plurality of horizontal beams made of steel having an upper flange, a lower flange, and a web connecting the upper flange and the lower flange are arranged. The upper floor material is directly or indirectly supported on the upper flange, the lower floor material is supported by the lower flange portion, and a space is formed between the upper floor material and the lower floor material. It has a double floor structure. Further, it is preferable that a part of the upper portion of the space portion is configured to be openable and closable.

A typical structure of the above means is that a plurality of sleeve holes for facility piping are provided at predetermined positions on the web of the beam, and piping is carried out to each facility equipment through the holes. And in the case of the first floor of the building, the equipment will be piped over the bottom floor material and led to the foundation penetration part,
In the case of two or more floors, after piping from the equipment to the bottom floor material and connecting it to the pipe shaft, after passing through the foundation of each floor with the pipe shaft, for example, if it is a drain pipe, it will be led to the drainage basin. Become.

[0008]

Since the double floor structure according to the present invention is constructed as described above, it has the following actions. Since a part of the floor is dropped by the beams, the lower floor material, and the upper floor material that constitute the frame system, a piping space can be secured on the lower floor material. Since the piping space is provided between the upper and lower flanges of the beam, it is easy to construct the floor drop.

By being able to perform on-site piping work on the floor, workability such as pipe fixing work is improved. In addition, the accuracy of construction that requires precise accuracy such as drainage gradient is improved. Since work can be done from above, construction work such as piping and future equipment expansion,
Maintenance work is easy. Since the piping is provided on the lower floor material, the lower floor material provides a sound insulation effect to the lower floor, and the sound insulation performance such as drainage sound is improved. Since the space for piping is secured in advance, it is easy to add water around, especially on the second floor and above. Therefore, it is not necessary to perform work such as hanging the ceiling, and the interior of the lower floor is not affected.

It is advantageous for maintenance if a part of the upper part of the space for piping can be opened and closed. If the beam is provided with a sleeve hole for facility piping, the beam can be easily passed through the beam without having to open the sleeve or open the sleeve on site.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the double floor structure according to the present invention will be specifically described with reference to the drawings. FIG. 1 is a diagram showing a configuration in which a part of the floor of the building is dropped, FIG. 2 is a cross-sectional explanatory diagram showing a configuration of a double floor structure according to the present invention, and FIG. 3 is a piping system in which the floor is dropped. FIG. 4 is a perspective explanatory view showing a state in which piping is actually performed according to the piping system diagram of FIG. 3, and FIG. 5 is a perspective explanatory view in the case where a maintenance opening is provided on the floor surface where the floor is dropped.

In FIG. 1, the building frame is assembled by columns 1 and horizontal beams 2 arranged vertically and horizontally corresponding to each floor. The beam 2 has an upper flange 3 and a lower flange 4, and the upper flange 3 and the lower flange 4 are connected by a web 5. The beam 2 is a so-called H type steel, I type steel, C
It can be made of a shape steel, a lip H-shape steel, or the like.
The web 5 is provided with sleeve holes 6 of a predetermined size at a predetermined pitch, and pipes and wirings are penetrated through the sleeve holes 6 to distribute the equipment to equipments arranged at predetermined positions in the building. You can do it.

The floor of each floor of the building is erected by beams 2. A pair of beams 2 arranged in parallel in the vertical direction and a pair of beams 2 arranged in parallel in the horizontal direction are provided at predetermined positions on the floor surface of each floor.
And form a piping pit zone 7. The floor in the piping pit zone 7 has a double floor structure, and is constituted by a lower floor laid in the area of the piping pit zone 7 and an upper floor laid all over.

The double floor structure formed in the piping pit zone 7 will be described with reference to FIG. On the lower flange 4 of the beam 2 forming the pipe pit zone 7, a lower floor material 8 having a width and a length corresponding to the separation distance of the webs 5 of the beam 2 arranged in parallel in the longitudinal direction and the lateral direction, respectively. Placed.

Between the lower floor material 8 and the upper flange 3, there is a height corresponding to the distance between the upper surface of the lower floor material 8 and the lower surface of the upper flange 3, and the width of the lower floor material 8 is Side plates 9 having lengths corresponding to the respective lengths are provided and fixed to the four sides of the pipe pit zone 7, respectively. The lower floor material 8 and the side plates 9 are preferably made of a plate material having sound insulation and high surface rigidity, such as a PC board, an ALC board, and a cement-based laminated board.

A floor slab 10 on which a PC plate or an ALC plate is laid is erected outside the pipe pit zone 7 on a half piece on the upper flange 3 of the beam 2 which constitutes the pipe pit zone 7. On the other piece on the upper flange 3, there is a patch plate 11 having a height corresponding to the thickness of the floor slab 10 and a length corresponding to the length and width of the lower floor material 8, respectively. It is provided on all four sides. And floor slab 10 and backing plate 11
The mortar 12 is poured and fixed between and to a height corresponding to the thickness of the floor slab 10.

A support frame 14 is provided above the lower floor material 8 and is supported by a support member 13 at a predetermined distance from the lower floor material 8. The support frame 14 is composed of a frame-like frame made of steel, wood or the like having a size corresponding to the size of the inner surface of the backing plate 11 provided on the four sides and a predetermined thickness.

The support member 13 is composed of a separator having a ball screw or the like as its shaft, and its length can be freely changed. Then, the abutting portions at both ends are attached to the lower floor material 8
Are abutted on the upper surface and the lower surface of the support frame 14, respectively, and a large number of them are arranged at the four corners of the pipe pit zone 7 or around the side end of the pipe pit zone 7. With the above configuration, the length of the support member 13 can be adjusted to adjust the separation distance between the lower floor material 8 and the support frame 14, and the support frame 14 can be made to match the height of the floor slab 10.

An intermediate plate 15 having a size corresponding to the size of the four sides formed by the mortar 12 provided on the outer periphery of the backing plate 11 is laid on the upper portion of the support frame 14. The middle plate 15 has a middle plate on the outer circumference.
A frame plate 16 having a length corresponding to the size of the four sides of 15 and a thickness corresponding to the thickness of the intermediate plate 15 is provided on the four sides.

Outside the frame plate 16 and on the floor slab 10, a middle plate
A mortar 17 having a thickness corresponding to the thickness of 15 and the frame plate 16 is laid. An upper floor material 18 is laid on top of the middle plate 15, the frame plate 16 and the mortar 17, and the upper surface of the upper floor material 18 is configured as a floor finishing surface. The upper floor material 18 is made of a finishing material such as flooring, carpet or vinyl chloride sheet. Further, a ceiling material 19 is provided at a predetermined distance from the lower surface of the lower flange 4 of the beam 2 which constitutes the pipe pit zone 7, whereby a ceiling surface of the lower floor is formed.

3 and 4 show a piping system diagram in which water pipes, hot water pipes, drain pipes, gas pipes, etc. are piped in the pipe pit zone 7 in which the floor has been dropped as described above, and an actual pipe state. . 3 and 4, a pipe shaft 20 is provided at a predetermined position in the pipe pit zone 7 for connecting various pipes through the foundation for the purpose of supplying water, drainage, gas, etc. to each floor of the building.

For example, one room on a certain floor is as shown in FIG.
A kitchen unit 21, a toilet 22, a washbasin 23, a water heater 24 and a bathroom 25 are arranged at predetermined positions in the figure, respectively. The water supply pipe 26 (indicated by a chain line) passes from the pipe shaft 20 through the piping pit zone 7 to the faucet of the kitchen unit 21, the water tank of the toilet 22, the faucet of the washbasin 23, the water inlet of the water heater 24, and the faucet of the bathroom 25. Are connected and piped respectively.

A hot water supply pipe 27 (indicated by a chain double-dashed line) is connected to a hot water supply port of a water heater 24, is connected to a faucet of a kitchen unit 21 through a pipe pit zone 7, and is installed in the washbasin 23. ， Pipes are connected to each faucet of bathroom 25. The hot water pipe 28 (shown by a broken line) is connected to the hot water supply port of the water heater 24 and also connected to the reheating device provided in the bathtub of the bathroom 25 to be piped.

The miscellaneous drainage pipes 29 (indicated by thick lines or pipes) are connected to the drainage port of the kitchen unit 21, the drainage port of the washbasin 23, and the drainage port of the bathroom 25, respectively, and pass through the piping pit zone 7 to the pipe shaft 20. It is plumbed. The dirty drainage pipe 30 (indicated by a thin line or pipe) is connected to the dirty drainage port of the toilet 22,
The pipe shaft 20 is also piped through the pipe pit zone 7. Further, a gas pipe 31 (shown by a dotted line) is connected from the pipe shaft 20 through the pipe pit zone 7 to the gas appliance of the kitchen unit 21 and the gas appliance of the water heater 24 for piping. In addition, each of the above-mentioned pipes is the web 5 of the beam 2.
The pipe is penetrated through the sleeve hole 6 provided in the.

The above-mentioned FIG. 2 is a sectional view taken along the line A--A of FIG. 3. In the space formed between the lower floor material 8 and the upper floor material 18 of the piping pit zone 7, from the right side of FIG. Hot water supply pipe 27,
The water supply pipe 26, the gas pipe 31, and the miscellaneous drainage pipe 29 are supported on the lower floor material 8 by fixing members. A pipe 32 for electric wiring is provided on the left side of the miscellaneous drainage pipe 29.

At a predetermined position of the pipe pit zone 7, as shown in FIG. 5, there is provided a maintenance opening provided for inspecting and changing, adding or repairing the pipe or the like. This maintenance opening is provided with a maintenance hole 33 at a predetermined position of the support frame 14, middle plate 15, and upper floor material 18 of the pipe pit zone 7, and a lid 34 corresponding to the size of the hole 33 is attached to the hole 33. It is openable and closable.

Next, another embodiment will be described with reference to FIGS. The same members as those in the above-mentioned embodiment are designated by the same reference numerals and the description thereof will be omitted. In the embodiment shown in FIG. 6, the beam 2 is composed of lip H-shaped steel, and the lower flange 4
The crank-shaped receiving member 35 is engaged with the lip portion 4a of the
The lower floor material 8 is supported by the receiving member 35. In this case, the side plate 9 is arranged between the upper surface of the receiving member 35 and the lower surface of the upper flange 3. Other configurations are the same as those in the above-mentioned embodiment.

In the embodiment shown in FIG. 7, an L-shaped engaging member is provided on the upper surface of the lower floor material 8 at a position corresponding to the lower flange 4 of the beam 2.
36 is fixed, and the engaging member 36 engages with and is locked by the upper surface of the lower flange 4 of the beam 2. The side plate 9 is disposed between the upper surface of the engaging member 36 and the lower surface of the upper flange 3. Other configurations are the same as those in the above-mentioned embodiment.

The same effects as those of the above-mentioned embodiments can be obtained even when the above-mentioned embodiments are constructed.

[0030]

Since the double floor structure according to the present invention has the above-described structure and operation, the pipe can be laid on the lower floor material. Therefore, since the on-site piping work can be performed on the floor, the workability of the pipe fixing work and the like can be improved, and the precision of the construction, such as drainage gradient, which requires precise precision can be improved.

Further, since the work can be performed from above, it is easy to carry out work such as piping work, facility expansion in the future, and maintenance work. In addition, since the piping is provided on the lower floor material, the lower floor material provides a sound insulation effect to the lower floors, and the sound insulation performance such as the sound of domestic drainage is improved, so that the comfort of living is improved.

Since a space for piping is secured by the space provided between the upper floor material and the lower floor material, the ceiling of the lower floor is particularly required when a water supply is added to the second floor or higher. There is no need to carry out construction work such as lowering, and the interior of the lower floor will not be affected. Also, unlike the conventional case where the piping used on that floor is installed under the ceiling of the lower floor, there is no need to destroy the ceiling of the lower floor, so there is no inconvenience to the lower floor and it is necessary to reconstruct the ceiling. It is economical because it does not exist.

If the beam is provided with a sleeve hole for facility piping, the beam can be easily penetrated when the piping is arranged. Therefore, it is not necessary to pass the sleeve through the beam or to open the beam at the site, and the workability at the site is improved. Further, when a maintenance opening is provided at a predetermined position in the pipe pit zone, inspection, change, addition, repair, etc. of the pipe can be easily performed.

Since the space for piping is provided by utilizing the space between the upper and lower flanges of the shape steel, the conventional reverse T
Compared to the case where a slab is formed in a V shape, the work on the floor drop-in part is easier, and the number of on-site man-hours and costs can be reduced.

From the above, it is possible to improve the workability of the construction work, particularly the complicated and troublesome piping work, and the construction quality. Further, it has a feature that the quality of maintenance can be improved even if a trouble occurs in the piping after completion.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration in which a part of a floor of a building is dropped.

FIG. 2 is a cross-sectional explanatory view showing the structure of the double floor structure of the present invention.

FIG. 3 is a piping system diagram in which piping is provided at a location where the floor is dropped.

4 is a perspective explanatory view showing a state in which piping is actually performed according to the piping system diagram of FIG. 3. FIG.

FIG. 5 is a perspective explanatory view in the case where a maintenance opening is provided on the floor surface of the place where the floor is dropped.

FIG. 6 is a diagram illustrating another embodiment.

FIG. 7 is a diagram illustrating another embodiment.

[Explanation of symbols]

1 ... Pillar, 2 ... Beam, 3 ... Upper flange, 4 ... Lower flange, 4
a ... Lip part, 5 ... Web, 6 ... Sleeve hole, 7 ... Piping pit zone, 8 ... Lower floor material, 9 ... Side plate, 10 ... Floor slab,
11 ... Patch plate, 12 ... Mortar, 13 ... Support member, 14 ... Support frame, 15 ... Middle plate, 16 ... Frame plate, 17 ... Mortar, 18 ... Upper floor material,
19 ... Ceiling material, 20 ... Pipe shaft, 21 ... Kitchen unit, 22 ... Toilet, 23 ... Washbasin, 24 ... Water heater, 25 ... Bathroom,
26 ... Water supply pipe, 27 ... Hot water supply pipe, 28 ... Hot water pipe, 29 ... Miscellaneous drainage pipe,
30 ... dirty drainage pipe, 31 ... gas pipe, 32 ... pipe, 33 ... hole, 34 ... lid,
35 ... Receiving member, 36 ... Engaging member

Claims (2)

[Claims] 1. A plurality of horizontal beams made of shaped steel having an upper flange, a lower flange, and a web connecting the upper flange and the lower flange are arranged, and an upper floor material is directly or indirectly supported on the upper flange. In addition, the lower floor material is supported by the lower flange portion, and a space portion is formed between the upper floor material and the lower floor material. 2. The double floor structure according to claim 1, wherein a part of the upper portion of the space is configured to be openable and closable.