JP4190203B2 - Seismic isolation drainage piping structure for detached houses - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a seismic isolation drain piping structure for a detached house.
[0002]
[Prior art]
Conventionally, in the field of middle- and high-rise buildings, as a seismic isolation pipe, a stainless steel bellows pipe is covered with a bendable stainless steel protective pipe, and a metal flexible pipe with strength against extension or a synthetic rubber pipe is used. Flexible piping mainly made of stainless steel or rubber material, such as a rubber flexible tube with a metal net tube sheathed on a tube, is used. In particular, as disclosed in JP-A-11-132365, JP-A-11-94125, and JP-A-2000-234485, the above flexible pipe is formed into an L shape through an elbow joint. It is disclosed that a displacement absorbing mechanism, such as a suspension fitting with a damper, a vertically movable support base with a caster that can move horizontally, and the like are separately provided in the elbow joint portion by piping.
[0003]
On the other hand, in the field of detached houses, seismic isolation houses have been attracting attention since the earthquake, and seismic isolation piping has been studied.
[0004]
[Problems to be solved by the invention]
However, in the field of middle- and high-rise buildings, the above-mentioned rubber or stainless steel flexible pipes are used for the seismic isolation pipes, and a complicated displacement absorbing mechanism is separately provided at the elbow joint as described above. Therefore, the cost is high and it is considered difficult to apply and deploy seismic isolation piping to detached houses. In addition, since the flexible pipe is piped in an L shape via an elbow joint, there is a problem that it is necessary to establish a dedicated design method for a seismic isolation pipe for a detached house.
[0005]
Accordingly, an object of the present invention is to provide a seismic isolation drain pipe structure for a detached house that can solve the above-mentioned problems and can be designed at a low cost by following the design method for a drain pipe for a detached house. It is in.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the invention described in claim 1 is characterized in that the drainage flexible pipe capable of absorbing the displacement in the plane direction is piped in a substantially U-shape, and is free of charge for a detached house. Seismic drainage piping structure.
[0007]
According to the invention concerning Claim 1 comprised in this way, it is the seismic isolation drainage piping structure for detached houses where the detached house is supported on the ground via the seismic isolation support mechanism, Are separated into a building-side drain pipe connected to each facility of the house and a ground-side drain pipe connected to the public sewer, the building-side drain pipe is on the building side, and the ground-side drain pipe is A drainage flexible pipe with a smooth inner surface that can absorb displacement in the plane direction and a corrugated outer surface between the building-side drainage pipe and the ground-side drainage pipe in a substantially U-shape. is the the symbolic U-shaped drainage flexible tube, using a flat moveable support fixture by Rukoto are reserved and set supporting the drainage slope, elbow joint portion in the L-shaped pipe of the prior art This eliminates the need for a separate displacement absorption mechanism, and can be constructed at low cost. It can be designed to follow the design method of single-family residential drainage pipe. Furthermore, special work at the site can be eliminated, and piping work using current parts, adhesives, support fixing members, and the like can be performed.
[0008]
Moreover, according to the invention concerning Claim 1 comprised in this way, rather than the structure which piped flexible piping into the L shape via the elbow joint by making a drainage flexible tube into a substantially U shape, The displacement in the plane direction can be absorbed more easily and reliably.
[0009]
According to a second aspect of the present invention, the connecting portion between the building-side drain pipe and the drainage flexible pipe is suspended from the building, and the connecting portion between the ground-side drain pipe and the drainage flexible pipe is on the ground side. is fixed through a fixing member, the bent portion of the drainage flexible tube of the substantially U-shape is secured and set drainage slope movably supported via a planar moveable support fixture ground surface, upstream of the The building-side drain pipe is at a high position, the downstream ground-side drain pipe is at a low position, and the intermediate drain flexible pipe is supported so that the required drain gradient is created from the building-side drain pipe to the ground-side drain pipe. The seismic isolation drain pipe structure for a detached house according to claim 1, wherein the structure is supported by a fixture .
[0010]
According to the invention according to claim 2 configured in this manner, the drainage gradient of the drainage flexible pipe can be easily secured by moving the support fixing bracket that supports the substantially U-shaped drainage flexible pipe in a plane. It becomes possible to set.
[0011]
The invention described in claim 3 is characterized in that the drainage flexible pipe and the building side drainage pipe, or the drainage flexible pipe and the ground side drainage pipe are connected by a joint that absorbs expansion and contraction and displacement. The seismic isolation drain piping structure for a detached house according to claim 1 or 2.
[0012]
According to the invention according to claim 3 configured as described above, the drainage flexible pipe and the building-side or ground-side drainage pipe are connected via the joint that absorbs expansion and contraction and displacement. In addition, it is possible not only to absorb the displacement in the plane direction much more, but also to absorb the displacement in the left-right direction around the pipe axis direction of the pipe.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, specific embodiments of the present invention will be described together with illustrated examples.
[0014]
1 to 7 show an embodiment of the present invention.
[0015]
First, the structure will be described. In FIG. 1, a detached house 4 is supported by a base isolation via a base isolation support mechanism 3 on a slab surface 2 provided on the ground 1 (site), thereby forming a base isolation house. is doing. The slab surface 2 is installed below the detached house 4 so that the seismic isolation support mechanism 3 can be interposed between the slab surface 2 and the ground 1. The seismic isolation support mechanism 3 for the detached house 4 is arbitrary such as a laminated rubber mold. The detached house 4 is provided with a drain pipe 5.
[0016]
As shown in FIG. 2, this drain pipe is connected to individual water distribution pipes 12 and merging masses from standing parts 11 connected to each facility of a detached house 4 such as a kitchen, a bath, a toilet, a washroom and a rain gutter, not shown. 13, connected to the public sewer 16 through the collective drain pipe 14 and the public mass 15.
[0017]
In this embodiment, among the drainage pipes 5 provided in the detached house 4, the individual drainage pipes 12 are connected to the buildings-side drainage pipes 17 connected to the facilities of the detached house 4 and the public sewer 16. Separated into side drain pipe 18 and cut off. When the earthquake occurs, the seismic isolation support mechanism 3 is interposed when an earthquake occurs, so the ground and the building individually vibrate, the building-side drain pipe 17 on the building side, and the ground-side drain pipe 18 on the ground side. It means that it is supported and fixed to.
[0018]
And the flexible drain pipe 19 which can absorb the displacement of a plane direction is connected between the building side drain pipe 17 and the ground side drain pipe 18. A corrugated tube as shown in FIG. 3 is used as the drainage flexible tube 19 capable of absorbing the displacement in the planar direction.
[0019]
The material of the corrugated tube, that is, the drainage flexible tube 19, may be any thermoplastic synthetic resin such as vinyl chloride resin, polyethylene, or polypropylene, and polyethylene is particularly preferable because of its high resistance to repeated bending deformation. Further, the corrugated tube has a smooth inner peripheral surface, and solid crests 191 and troughs 192 are alternately formed on the outer peripheral surface in parallel along the axial direction. For example, polyethylene In the case of a waved tube, the peak portion 191 is a high-density polyethylene resin and the valley portion 192 is a low-density polyethylene resin so that the resistance to repeated bending deformation is greater.
[0020]
Furthermore, the drainage flexible tube 19 capable of absorbing the displacement in the planar direction is formed in a substantially U shape as shown in FIGS. As shown in FIG. 5, the substantially U-shape may be formed by bending the drainage flexible tube 19 alone, or as shown in FIG. The elbow joint 20 and a short pipe may be combined.
[0021]
Then, at least a connection portion between the building-side drain pipe 17 and the drainage flexible pipe 19 is suspended and supported via a hanger 21 with respect to the top surface (lower surface) of the detached house 4. As shown in FIG. 7, the hanger 21 includes a hanger bolt 22 extending downward from the top surface of the detached house 4, a turnbuckle 23 attached to the lower end of the hanger bolt 22, and a bolt attached to the turnbuckle 23. A substantially ring-shaped suspension band 25 that can be attached by a fastener 24 such as a nut. The suspension band 25 is provided with a hinge 26 at a position shifted from the center of the lower portion, and the building-side drain pipe 17 can be held by opening and closing the upper portion around the hinge 26.
[0022]
Further, at least a connection portion between the ground side drain pipe 18 and the drain flexible pipe 19 is fixed to the slab surface 2 of the ground 1 via a fixture 31. As shown in FIG. 8, the fixture 31 is fixed so that the height can be adjusted by using a base plate 32, a pair of support bolts 33 extending upward from both ends of the base plate 32, and a nut 34 between the support bolts 33. And a half ring-shaped support band 35. The fixing tool 31 is fixed to the slab surface 2 using a concrete nail (not shown) at a portion of the base plate 32.
[0023]
Further, the substantially U-shaped drainage flexible pipe 19 is supported by a support fixture 38 that can be moved in a plane so that a drainage gradient can be secured and set. The support fixture 38 is substantially the same as the fixture 31 described above, and the base plate 32 is fixed to a block 39 movably placed on the slab surface 2 using a concrete nail (not shown). By forming.
[0024]
In order to secure and set a drainage gradient, the upstream building-side drainage pipe 17 is fixed with a required drainage gradient at a high position, and the downstream ground-side drainage pipe 18 is required at a low position. The intermediate drainage flexible pipe 19 is supported by the support fixing bracket 38 so as to have a required drainage gradient from the building side drain pipe 17 side to the ground side drain pipe 18 side. Adjust the height.
[0025]
The drainage flexible pipe 19 and the building-side drainage pipe 17 or the drainage flexible pipe 19 and the ground-side drainage pipe 18 are examples of joints capable of absorbing expansion and contraction and displacement as shown in FIG. You may connect with the joint 40 (rubber ring joint) by which the rubber ring 42 was mounted | worn on the surrounding surface. Of course, the rubber ring joint 40 may be used either or both between the flexible drain pipe 19 and the building-side drain pipe 17 and between the flexible drain pipe 19 and the ground-side drain pipe 18. . Although FIG. 9 shows a connected state between the drainage flexible pipe 19 and the building-side drainage pipe 17, the connection state between the drainage flexible pipe 19 and the ground side drainage pipe 18 is the same.
[0026]
The rubber ring joint 40 is attached to the pipe end on either side of the drainage flexible pipe 19 or the building side drainage pipe 17 if the pipe receiving port 41 to which the rubber ring 42 is attached faces the pipe end of another pipe. May be. In the rubber ring receiving port, the tube 19 or the tube 18 inserted into the tube receiving port 41 can rotate around the axial direction in the tube receiving port 41, and therefore can withstand displacement in the horizontal direction of the pipe. In addition, even if the tube 17, 18 or 19 is displaced in the horizontal direction or the vertical direction, the rubber is buffered and its movement is absorbed better.
[0027]
In addition, since the one where the length of the axial direction of a pipe receptacle (swallowing allowance of an insertion tube) is long is large in axial direction, it is preferable. Furthermore, it is preferable that the diameter is increased toward the inner part of the tube receptacle because vibration is absorbed more. Furthermore, a joint in which the joint body and the pipe receiving port are connected in a watertight and rotatable manner by an O-ring may be used, or a universal joint in which the pipe receiving port can swing about 15 degrees from the center of the pipe axis may be used. .
[0028]
When the rubber ring joint 40 is used between the ground side drain pipe 18 and the drainage flexible pipe 19, the half ring-shaped support band 35 of the fixture 31 is wound around the rubber ring joint 40. Fix to slab surface 2. When the rubber ring joint 40 is used between the building-side drain pipe 17 and the drainage flexible pipe 19, the substantially ring-shaped suspension band 25 of the hanging tool 21 is wound around the rubber ring joint 40 and the hanging tool 21. Is attached and supported by suspension.
[0029]
Next, the operation of this embodiment will be described.
[0030]
When an earthquake occurs, the building and the ground 1 operate separately. Therefore, the individual water distribution pipe 12 in the drainage pipe 5 is cut into a building-side drainage pipe 17 and a ground-side drainage pipe 18, thereby building and ground 1. The drain pipe can be made to follow the movement. At this time, the displacement in the plane direction can be absorbed by connecting the drainage flexible pipe 19 between the building side drain pipe 17 and the ground side drain pipe 18.
[0031]
Thus, the drainage pipe 5 provided in the detached house 4 is cut into a building-side drainage pipe 17 and a ground-side drainage pipe 18, and a plane is formed between the building-side drainage pipe 17 and the ground-side drainage pipe 18. By connecting the drainage flexible tube 19 capable of absorbing the displacement in the direction, the special displacement absorbing mechanism 3 is not required, so that it can be constructed at a low cost and is designed by following the current design method. be able to. Furthermore, special work at the site can be eliminated, and piping work using current parts, adhesives, support fixing members, and the like can be performed.
[0032]
Drainage flexibility that can absorb the displacement in the plane direction between the building side drainage pipe and the ground side drainage pipe by cutting the drainage pipe provided in the detached house into the building side drainage pipe and the ground side drainage pipe By connecting the pipe to a substantially U-shaped mold, a separate displacement absorbing mechanism is not required for the elbow joint part of the L-shaped pipe of the prior art, so that it can be constructed at low cost, and for current detached houses. It can be designed following the design of drainage piping. Furthermore, special work at the site can be eliminated, and piping work using current parts, adhesives, support fixing members, and the like can be performed.
[0033]
In addition, by making the drainage flexible pipe into a substantially U shape, it is possible to absorb the displacement in the plane direction more easily and reliably than the structure in which the flexible pipe is piped into an L shape via an elbow joint. It becomes.
[0034]
After the earthquake or the like, the drainage gradient of the drainage flexible pipe 19 can be easily secured and set by moving the support fixture 38 that supports the substantially U-shaped drainage flexible pipe 19 in a plane. .
[0035]
As an example of a joint in which the drainage flexible pipe 19 and the building side drain pipe 17 or the ground side drain pipe 18 absorb expansion and contraction and displacement, a rubber ring 42 mounted on the inner peripheral surface of the pipe receiving port 41 of the rubber ring joint 40 is provided. If they are connected to each other, not only can the displacement in the plane direction be absorbed more easily and reliably, but also the tube can rotate around the axial direction in the tube receiving port 41, so It is possible to withstand displacement in the direction.
[0036]
【The invention's effect】
As described above, according to the first aspect of the present invention, there is provided a seismic isolation drainage pipe structure for a detached house in which the detached house is supported on the ground via a seismic isolation support mechanism. Are separated into a building-side drain pipe connected to each facility of the house and a ground-side drain pipe connected to the public sewer, the building-side drain pipe is on the building side, and the ground-side drain pipe is A drainage flexible pipe with a smooth inner surface that can absorb displacement in the plane direction and a corrugated outer surface between the building-side drainage pipe and the ground-side drainage pipe in a substantially U-shape. is the the symbolic U-shaped drainage flexible tube, using a flat moveable support fixture by Rukoto are reserved and set supporting the drainage slope, special seismic isolation support mechanism is not necessary Therefore, it can be configured at low cost and can be designed following the current design method. Furthermore, special work at the site can be eliminated, and piping work using current parts, adhesives, support fixing members, and the like can be performed.
[0037]
Furthermore, a drainage flexible pipe having a smooth inner surface capable of absorbing displacement in a planar direction and a corrugated outer surface is provided in a substantially U-shape, and the substantially U-shaped drainage flexible pipe is supported to be movable in a plane. using fasteners, by Rukoto are reserved and set supporting the drainage slope, it is possible to absorb easily and reliably in the planar direction displacement.
[0038]
According to invention of Claim 2, the connection part of the said building side drainage pipe and a drainage flexible pipe is suspended and supported from a building, and the connection part of the said ground side drainage pipe and a drainage flexible pipe is fixed to the ground side. is fixed through the tool, bend of the drainage flexible tube of the substantially U-shaped with is supported drainage slope securing and settable via the flat moveable support fixture ground surface, upstream of the building The side drainage pipe is at a high position, the downstream ground side drainage pipe is at a low position, and the intermediate drainage flexible pipe is supported and fixed so that the required drainage gradient is created from the building side drainage pipe to the ground side drainage pipe By being supported by the tool, it is possible to exert a practically beneficial effect that the drainage gradient of the drainage flexible pipe can be easily secured and set.
[0039]
According to the invention of claim 3, by using the joint that absorbs expansion and contraction and displacement, it becomes possible to absorb the displacement in the plane direction more easily and surely, and it is also possible to absorb the displacement in the vertical direction and the horizontal direction. It becomes.
[Brief description of the drawings]
FIG. 1 is a front view of a base-isolated house according to an embodiment of the present invention.
FIG. 2 is a plan view showing a drain pipe in the base-isolated house of FIG.
FIG. 3 is a view showing a drainage flexible tube used in FIG. 2;
4 is a perspective view showing the flexible drain pipe shown in FIG. 3 having a substantially U shape. FIG.
FIG. 5 is a configuration diagram of a substantially U-shaped flexible drain pipe.
FIG. 6 is another configuration diagram of a substantially U-shaped flexible drain pipe.
FIG. 7 is a perspective view of a hanging tool.
FIG. 8 is a perspective view of a fixture.
FIG. 9 is a front view showing that the drainage flexible pipe and the building-side drainage pipe are connected by a rubber ring joint.
[Explanation of symbols]
4 Detached House 5 Drainage Pipe 17 Building Side Drain Pipe 18 Ground Side Drain Pipe 19 Drain Flexible Pipe 38 Support Fixture 40 Rubber Ring Joint

Claims (3)

A seismic isolation drainage pipe structure for a detached house in which the detached house is seismically supported via a seismic isolation support mechanism on the ground,
Separate the individual drainage pipes into building-side drainage pipes connected to each facility in the house and ground-side drainage pipes connected to the public sewer,
The building-side drain pipe is supported and fixed on the building side, and the ground-side drain pipe is supported and fixed on the ground side,
Between these building-side drainage pipes and ground-side drainage pipes , drainage flexible pipes having smooth inner surfaces capable of absorbing displacement in the plane direction and corrugated outer surfaces are piped in a substantially U shape ,
The symbolic a U-shaped drainage flexible tube, using a flat moveable support fixture, detached houses for seismic isolation drain pipe structure characterized that you have reserved and set supporting the drainage slope. The connection part of the building-side drainage pipe and the drainage flexible pipe is supported suspended from the building,
The connection part of the ground side drainage pipe and the drainage flexible pipe is fixed to the ground side via a fixture,
The bent portion of the substantially U-shaped drainage flexible pipe is supported so as to ensure and set a drainage gradient via a support fixture capable of moving on the ground surface in a plane ,
The upstream building-side drain pipe is at a high position, the downstream ground-side drain pipe is at a low position, and the intermediate drain flexible pipe has a required drain gradient from the building-side drain pipe to the ground-side drain pipe. The seismic isolation drain piping structure for a detached house according to claim 1, wherein the seismic isolation drain piping structure is supported by the support fixture .    The door according to claim 1, wherein the drainage flexible pipe and the building side drainage pipe, or the drainage flexible pipe and the ground side drainage pipe are connected by a joint that absorbs expansion and contraction and displacement. Seismic isolation drainage piping structure for buildings.

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