JP2003027549A - Drain pipe structure in base isolation structure and pipe support tool used for this structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drain pipe structure capable of effectively absorbing relative displacement of a base isolation structure and the ground by earthquake motion, and capable of effectively preventing damaging of a connecting pipe and a metal fitting even when a wide space cannot be secured between the ground and the base isolation structure, and a pipe support tool used for this structure. SOLUTION: This drain pipe structure in the base isolation structure is curved in a U shape in a midway part of a flexible pipe 3 having one end connected to one drain pipe 1 laid on the base isolation structure side, and the other end connected to the other drain pipe 2 laid on the ground side. One end side connecting position of the flexible pipe 3 is set in a position dislocated in the direction orthogonal to the flowing direction of waste water flowing on one end side or the other end side of the flexible pipe 3 from above the other end connecting position of the flexible pipe 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage pipe structure in a seismic isolation structure.

[0002]

2. Description of the Related Art In recent years, a technique for preventing seismic motion from acting on a structure by interposing a seismic isolation device between the ground and the structure and supporting the structure with the seismic isolation device (seismic isolation Technology) has been developed and put into practical use in some areas. Thus, in the case of isolating a structure with the above-described seismic isolation device, in addition to the basic structure such as the structure itself or the seismic isolation device, various members associated with the structure, particularly the ground side and the structure There is a problem about what kind of structure is used for various members connecting the side. For example, for drainage piping, if the same structure as the conventional piping structure for non-isolated structures is used, it will be destroyed due to the relative displacement between the ground side and the structure side. Becomes

In connection with this point, the drainage piping structure shown in FIG. 3 and the drainage piping structure shown in FIG. 4 have been conventionally used. In the drainage pipe structure shown in FIG. 3, for example, one flexible pipe 51 is connected to an end portion of one drainage pipe 50 which is a drainage pipe from a seismic isolation structure side such as a kitchen or a bathroom (not shown). The other flexible pipe 53 is connected to the end of the other water pipe 52 having a length in a direction orthogonal to the length direction of the water pipe 50 and connected to the ground side. The flexible pipe 53 is connected to the other flexible pipe 53 via a connecting pipe 54 formed in an L shape, and the connecting pipe 54 is placed on a table 55 formed above the ground (not shown). It is fixed to the mounting block 56.

According to the drainage pipe structure shown in FIG. 3, the drainage from the seismic isolation structure side passes from the one water distribution pipe 50 to the one flexible pipe 51, the connection pipe 54, and the other flexible pipe 53. And flows into the other drain pipe 52 and is discharged. Further, according to this drainage pipe structure, when an earthquake occurs, the seismic motion is not only absorbed by the one and / or the other flexible pipes 51 and 53, but is also mounted on the connection pipe 54. Block 56
While being supported by the table 55,
Since it is movable above, the risk of destruction due to the earthquake motion can be avoided.

Further, in the drainage piping structure shown in FIG. 4, for example, one water pipe 60 connected to the toilet C installed in the toilet and the other water pipe 61 constructed on the ground side are provided. , And is connected by a joint pipe 62 formed of rubber in a substantially spiral shape. According to the drainage pipe structure shown in FIG. 4, it is possible to prevent the earthquake motion from being absorbed and destroyed by the joint pipe 62 due to the occurrence of an earthquake.

[0006]

However, the drainage piping structure shown in FIG. 3 cannot be constructed unless a sufficient construction space or a space for maintenance can be secured between the ground and the seismic isolation structure. On the other hand, in the drainage pipe structure shown in FIG. 4, unlike the drainage pipe structure shown in FIG. 3, sufficient space is not required, but when an earthquake occurs, the joint pipe 62 and one drain pipe A large stress is applied to the connection part with 60 and the connection part with the joint pipe 62 and the drainage pipe 61 on the other side, and the drainage pipes 60, 61 on the one and the other side and the fixing metal fitting 6 for fixing these
3,64 etc. may be destroyed.

Therefore, the present invention has been proposed in order to solve the problem of each drainage pipe structure in the conventional seismic isolation structure described above, and has a large space between the ground and the seismic isolation structure. Even if we cannot secure
Used for this structure and drainage pipe structure that can effectively absorb the relative displacement between the base-isolated structure and the ground due to earthquake motion, and can also effectively prevent the connecting pipes and fittings from being damaged. The purpose of the present invention is to provide a pipe support.

[0008]

The present invention has been proposed to achieve the above object, and the first invention (the invention according to claim 1) is the drainage pipe structure in a seismic isolation structure. The one end of the flexible pipe is U-shaped, one end of which is connected to one drain pipe connected to the seismic isolation structure side and the other end is connected to the other drain pipe connected to the ground side. The connection position on the one end side of the flexible pipe is a direction perpendicular to the flow direction of the drainage flowing from one end side or the other end side of the flexible pipe from above the connection position of the other end of the flexible pipe. It is characterized in that the position is shifted to.

In the first aspect of the present invention, the middle portion of the flexible pipe is curved in a U shape, and the fixed position of one end of the flexible pipe is the fixed position of the other end of the flexible pipe. It is necessary that the position is deviated from the upper side in a direction orthogonal to the flow direction of the drainage flowing on one end side or the other end side of the flexible pipe. That is, in the present invention, the flexible pipe piped is U-shaped in a side view of the structure, but the fixed position on one end side and the fixed position on the other end side of the flexible pipe are in the vertical direction. In the above, the flexible pipes thus piped are U-shaped even in a plan view because they do not correspond to each other but are horizontally displaced from positions corresponding to the vertical direction. There is. In other words, according to the present invention, the middle portion is U-shaped using both the height direction and the horizontal direction of the space between the seismic isolation structure and the ground.

Therefore, according to the first aspect of the present invention, even when a sufficient construction space or maintenance space cannot be secured between the seismic isolation structure and the ground,
It is possible to reliably perform drainage piping. Moreover, since the middle part of the flexible pipe is curved in a U shape,
It is possible to effectively eliminate the risk of damage to the metal fittings for fixing the flexible pipe and the drain pipes on one side and the drain pipe on the other side due to the occurrence of an earthquake.

The second invention (the invention according to claim 2)
In the first invention, the flexible pipe is formed by a plurality of pipe supports placed on the ground so that the flexible pipe is gradually lowered from one end side to the other end side. It is characterized by being supported as follows.

According to the second aspect of the present invention, even if the flexible pipe has a long length, it can be reliably drained. In particular, since the pipe supporter that constitutes the present invention is mounted on the ground and is not fixed to the ground, the movement (flexure) of the flexible pipe is restricted due to the occurrence of an earthquake. Therefore, it is possible to prevent the flexible pipe from being broken because it prevents the earthquake from being absorbed.

The third invention (the invention according to claim 3)
According to the second aspect of the invention, the pipe support includes a support member that supports the flexible pipe, and the support member is configured so that a mounting position can be changed in a vertical direction. To do.

According to the third aspect of the invention, since the pipe supporting member is constructed so that the mounting position can be changed in the vertical direction, the most suitable slope is formed according to the length of the flexible pipe. Can be made.

A fourth invention (the invention according to claim 4)
Is a pipe supporting tool for supporting the flexible pipe constituting the above-mentioned first, second or third invention, and is a base plate portion placed on the ground, and stands upright from the base plate portion. One or a plurality of stanchions, a pipe support member supported by these stanchions and supporting an intermediate portion of the flexible pipe, and a moving means for vertically moving the pipe support member. It is a feature.

According to the fourth aspect of the invention, since the pipe supporting member supported by the support columns standing upright from the base plate can be moved in the vertical direction by the moving means, it is supported by the pipe supporting member. Flexible pipe
The slope can be formed so as to gradually incline downward from one end side to the other end side. In particular, since this pipe support is mounted on the ground, it is possible to prevent the flexible pipe from absorbing the seismic motion and prevent the flexible pipe from being damaged by the seismic motion.

The fifth invention (the invention according to claim 5)
In the fourth aspect of the invention, one and the other support columns are formed above the base plate portion, and the pipe support member is provided with an upper support member and a lower support member supported by the one and the other support columns, respectively. It is characterized in that it is composed of a side support member, and the upper support member and the lower support member are vertically movable along the one and the other of the columns.

According to the fifth aspect of the present invention, the support column is composed of the one support column and the other support column, and the support member is also composed of the upper support member and the lower support member. Therefore, even when an external force is applied to the flexible pipe, It is possible to secure a stable support state and avoid the risk of being unable to drain water.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION A drainage pipe structure for a seismic isolation structure according to an embodiment of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, the drainage piping structure of the seismic isolation structure according to this embodiment is provided with one drainage pipe 1 disposed on the seismic isolation structure side and on the ground side. The water pipe 2 on the other side is connected by a flexible pipe 3. One of the drain pipes 1 is arranged at a toilet, a bathroom, a kitchen, or the like (not shown) whose one end is provided on the seismic isolation structure side. An elbow pipe (reference numeral is omitted) that is bent in a letter shape is fixed, and the elbow pipe is supported by a reinforcing support fitting 4, and the other end is positioned horizontally. The other drainage pipe 2 has one end protruding slightly upward from the ground, and an elbow pipe (reference numeral is omitted) bent in an L shape at a middle portion on one end side. The other end (of the elbow pipe) is located in the same direction as the other end of the one drain pipe 1. In addition, an intermediate part (not shown) of the other drain pipe 2 is buried in the ground, and the other end faces the inside of a septic tank or a drain groove (not shown).

In the present embodiment, the other end of the one water distribution pipe 1 is piped at a position horizontally displaced from the position above the other end of the other drain pipe 2. The flexible pipe 3 connecting the drain pipe 1 on one side and the drain pipe 2 on the other side is in a state in which the middle portion is curved in a U shape. That is, the flexible pipe 3 is arranged in a U-shape in a plan view, and is also arranged in a U-shape in a side view. In the present embodiment, the flexible pipe 3 has a double structure in which the inner surface is made of soft vinyl chloride and the outer surface is made of hard vinyl chloride, and a large number of bellows are formed in the middle. Has been done. Further, one end side of the flexible pipe 3 is connected to the one drain pipe 1 (elbow pipe) while being inserted into the one drain pipe 1 (elbow pipe), and the other end side is connected to the other drain pipe 1 (elbow pipe). It is connected in a state of being inserted into the drainage pipe 2.

In the present embodiment, the middle of the flexible pipe 3 is divided into two (first and second).
It is supported by pipe supports 5, 5. These first
As shown in FIG. 2, the second pipe support tool 5 and the second pipe support tool 5 are respectively a base plate portion 6 placed on the ground, and one and the other support columns 7 and 8 fixed to the base plate portion 6. And an upper support member 9 and a lower support member 10 attached to the one and the other of the columns 7 and 8, respectively.

The base plate portion 6 is made of wood chips into which a corrosion inhibitor is injected under pressure. The base plate portion 6 has a fixing plate 17 formed on the upper surface of the base plate portion 6 in a rectangular shape with screws 11 and 12. Is fixed. The lower end of one of the support columns 7 is welded to one end of the fixed plate 17, and the lower end of the other support column 8 is welded to the other end of the fixed plate 17. These one and the other struts 7 and 8 are formed by screwing screws 7a and 8a on the peripheral surface, and two nuts 13, 14, 15 and 16 are screwed onto the struts 7 and 8, respectively.

The upper support member 9 and the lower support member 10 are fixed to the one and the other stanchions 7 and 8 by the nuts 13, 14, 15 and 16, respectively. The upper support member 9 and the lower support member 10 are basically formed in the same shape, and are fixed in an inverted state so that a circular cylindrical support space is formed by each arcuate portion described later. The flat plate portions 9a, 9b, 10a, 10b are formed on both the left and right sides, and the flat plate portions 9a, 9b, 10a, 10b are provided with the one or the other of the columns 7, 8 respectively. A through hole (not shown) is formed for inserting the. In addition, the upper support member 9
At the center of the one arc-shaped portion 9 which is bent in an arc shape.
c is formed, and at the center of the lower support member 10, the other arcuate portion 10c formed by being bent in an arcuate shape is formed. The one and the other arcuate portions 9c and 10c are portions that clamp the middle portion of the flexible pipe 3, and in the pipe support 5 according to this embodiment, the one or the other of the columns 7 and 8 is provided. The strength of the clamp can be adjusted by moving the screwed nuts 13 and 15 downward, and the screwing positions of the nuts 13, 14, 15 and 16 can be adjusted in the vertical direction. Thus, the support height of the flexible pipe 3 can be adjusted.

Further, in the drainage piping structure of the seismic isolation structure according to this embodiment, the flexible pipe 3 bent in a U-shape and piped has the first and second flexible pipes constructed as described above. As shown in FIG. 1, the pipe supports 5 and 5 are supported so that a gradient is gradually formed from one end side to the other end side. That is, in the one first pipe support tool 5 close to the one drainage pipe 1 provided on the seismic isolation structure side, the supporting height of the flexible pipe 3 is higher than the height of the end portion of the one drainage pipe 1. The mounting positions of the upper support member 9 and the lower support member 10 are set so as to be slightly lower, and in the second pipe support 5, a position slightly lower than that of the first pipe support 5. Is set to. The other drain pipe 2 is
It is supported by a pipe support 18 that does not have the base member 6, and a fixing plate 17 that constitutes this pipe support 18 is fixed to the ground.

According to the drainage piping structure in the seismic isolation structure according to the present embodiment described above, the flexible pipe 3 and the connection portion between the flexible pipe 3 and one or the other drainage pipes 1, 2 are caused by the occurrence of an earthquake. Not only can it be prevented from being damaged, but even if a large space is not formed between the ground and the seismic isolation structure, pipes can be reliably piped. Further, since the middle portion of the flexible pipe 3 is supported by the above-mentioned first and second pipe support members 5 and 5 and has a slope, it is possible to effectively prevent a situation in which dirty water or the like is not drained. .

In the above-described embodiment, as the moving means constituting the present invention, the nuts 13, 14, 15, 16 screwed to the one and the other stanchions 7, 8 are screwed or screwed to the upper side. The structure (configuration) for moving (adjusting) the support member 9 and the lower support member 10 has been described, but the above-mentioned moving means that constitutes the present invention does not necessarily have to adopt the above-described configuration, and the above-mentioned support 7, 8 and the upper support member 9 and the lower support member 10 are molded from resin, and the upper support member 9 and the lower support member 10 are slidable in the vertical direction while being guided by the columns 7 and 8. It may be one. Further, the number of columns that form the present invention need not be two as described above, and may be one.
Further, the number of supporting members for supporting the flexible pipe may be one instead of two as in the above-described embodiment.

[0028]

As is apparent from the above description of the embodiment of the present invention, according to the first invention (the invention according to claim 1), between the seismic isolated structure and the ground, Even if sufficient construction space or maintenance space cannot be secured, drainage piping can be reliably performed. Further, since the middle portion of the flexible pipe is curved in a U shape, the risk of damaging the metal fittings for fixing the flexible pipe and one and the other drain pipes due to the occurrence of an earthquake can be effectively eliminated. it can.

The second invention (the invention according to claim 2)
According to this, even when the flexible pipe has a long length, it is possible to reliably drain the water. In particular, since the pipe supporter that constitutes the present invention is mounted on the ground and is not fixed to the ground, the movement (flexure) of the flexible pipe is restricted due to the occurrence of an earthquake. Therefore, it is possible to prevent the flexible pipe from being broken because it prevents the earthquake from being absorbed.

The third invention (the invention according to claim 3)
According to this, since the pipe support member is configured so that the mounting position can be changed in the vertical direction, it is possible to form the most suitable slope according to the length of the flexible pipe.

The fourth invention (the invention according to claim 4)
According to this, since the pipe support member supported by the support columns standing upright from the base plate portion can be moved in the vertical direction by the moving means, the flexible pipe supported by the pipe support member is The slope can be formed so as to gradually slope downward along the end side.
In particular, since this pipe support is mounted on the ground, it is possible to prevent the flexible pipe from absorbing the seismic motion and prevent the flexible pipe from being damaged by the seismic motion.

The fifth invention (the invention according to claim 5)
Then, since the support column is composed of one and the other support column and the support member is also composed of the upper support member and the lower support member, a stable support state can be secured even when an external force is generated in the flexible pipe, It is possible to avoid the risk of being unable to drain water.

[Brief description of drawings]

FIG. 1 is a perspective view showing a drainage pipe structure in a base-isolated structure.

FIG. 2 is a perspective view showing a pipe support.

FIG. 3 is a perspective view showing a conventional drainage pipe structure.

FIG. 4 is a side view showing another conventional drainage pipe structure.

[Explanation of symbols]

One drain pipe 2 The other drain pipe 3 flexible pipe 5 Pipe support 6 Base plate 7 One column 8 The other support 9 Upper support member 10 Lower support member

Claims (5)

[Claims] 1. A midway portion of a flexible pipe having one end connected to one drainage pipe connected to the seismic isolation structure side and the other end connected to the other drainage pipe connected to the ground side is U.
The connection position on one end side of the flexible pipe is curved in a letter shape, and is orthogonal to the flow direction of the drainage flowing from one end side or the other end side of the flexible pipe from above the connection position of the other end of the flexible pipe. A drainage piping structure in a base-isolated structure, which is characterized by being displaced in the direction in which 2. The flexible pipe is supported by a plurality of pipe supports placed on the ground so that the flexible pipe is gradually sloped from one end side to the other end side. The drainage pipe structure in the seismic isolation structure according to claim 1, wherein 3. The pipe support comprises a support member for supporting the flexible pipe, and the support member is configured so that the mounting position can be changed in the vertical direction. Drainage piping structure for the seismic isolation structure described. 4. A flexible pipe for supporting the flexible pipe according to claim 1, 2, or 3, which comprises a base plate portion placed on the ground, and one standing upright from the base plate portion. A pipe comprising a plurality of struts, a pipe support member that is supported by these struts and supports an intermediate portion of a flexible pipe, and a moving unit that moves the pipe support member in the vertical direction. Support. 5. One and the other support columns are formed above the base plate portion, and the pipe support member includes an upper support member and a lower support member supported by the one and the other support columns, respectively. The pipe support according to claim 4, wherein the upper support member and the lower support member are vertically movable along the one and the other columns.