JP2014190471A - Support device of pipeline and support method of pipeline - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a support device of a pipeline and a support method of the pipeline which does not give a load to the pipeline.SOLUTION: A support device 100 of a pipeline 200 includes: the pipeline 200 having curved parts 215, 225; a support frame 110 which is attached to a building and has at least a channel shape, a retention part 120 and a support member 130; and the retention part 120, the support member 130 and the slide device 140 which retain the support frame 110 slidably in a horizontal surface. Further, the support frame 110 of a channel shape supports a center part G of the pipeline by means of the retention part 120 and the support member 130.

Description

  The present invention relates to a seismic isolation joint and a piping support device disposed in an expansion section in a multi-layered building such as a hotel, an apartment house, or a commercial building, and a piping support method.

  In recent years, seismically isolated buildings have been rapidly researched and developed. In particular, since the Tohoku-Pacific Ocean Earthquake, various studies have been started.

  Patent Document 1 discloses a suspension device for a displacement absorbing joint in piping equipment that can be installed at low cost with a simple structure and construction, and that does not impose a burden on piping and joints due to external forces such as earthquakes. Has been.

  In the suspension device for a displacement absorbing joint in a piping facility described in Patent Document 1, piping installed between a foundation fixed on the ground and a structure body constructed on the foundation via a seismic isolation means In equipment, a displacement absorbing joint that connects the pipes of the foundation and the structure body to each other is suspended so that it can be moved in all horizontal directions by guide means installed on either the foundation or the structure body. is there.

JP 11-44382 A

  However, in the suspension device for a displacement absorbing joint in the piping facility described in Patent Document 1, when the slide member 6a moves in the direction of the arrow Y, the slide member 6a is unlikely to return to the origin. For this reason, there exists a problem that a burden is applied to piping.

An object of the present invention is to provide a pipe support device and a pipe support method that do not impose a burden on the pipe.
Another object of the present invention is to provide a pipe support device and a pipe support method that do not impose a burden on the pipe by not changing the direction of the force.

(1)
A piping support device according to one aspect is a piping support device in an expansion section of a building, and includes a piping having a curved portion, a supporting frame having at least a U-shape and a supporting portion, and a supporting frame in a horizontal direction. The U-shaped support frame supports the central part of the pipe with the support part.

  A pipe support device according to the present invention includes a pipe having a curved portion, a support frame having at least a U-shape attached to a building, a sliding member that holds the support frame in a slidable manner in a horizontal plane, including. Further, the U-shaped support frame supports the central part of the pipe by the support part.

In this case, the U-shaped support frame whose shape does not change can be slid in the horizontal plane. Therefore, even when an external force such as an earthquake is applied to the pipe, the support base slides and moves while the pipe is supported by the support base. As a result, it is possible to realize a pipe support device that does not place a burden on the pipe.
In particular, it is considered effective to employ a slide mechanism at the connection part of the support frame itself. However, in the description of Patent Document 1 (Japanese Patent Laid-Open No. 11-44382), the support base is structurally easy to be distorted. There is a high risk of not. In the present invention, it is difficult to structurally cause distortion of the support frame due to the movement, so that it is easy to return to the origin after the displacement stress is applied. In addition, it is possible to install the support frame with a smaller margin in design.

(2)
The piping support device according to the second aspect of the present invention is the piping support device according to one aspect, wherein the support portion may place the central portion of the piping vertically above the U-shape.

  In this case, the central portion of the pipe can be reliably supported by the support portion. As a result, the load due to the weight of the pipe can be absorbed by the support portion.

(3)
A piping support device according to a third aspect of the present invention is the piping support device according to one aspect, wherein the support portion includes a rigid rod member, and one end of the rod member is connected to the U-shaped central portion, and the rod member The other end may be connected to the center of the pipe.

  In this case, even if there is a distance between the pipe and the support frame, it is possible to easily realize a support device that does not impose a burden on the pipe using the bar member.

(4)
A piping support device according to a fourth aspect of the present invention is the piping support device according to any one of the third to third aspects of the invention, wherein the support portion may support the central portion at a plurality of points.

  In this case, the support portion can reduce the load resistance by dispersing the load resistance at each of the plurality of points by supporting the central portion at a plurality of points. In addition, the safety factor can be easily increased.

(5)
A piping support device according to a fifth aspect of the present invention is the piping support device according to any one of the fourth to fourth aspects, wherein the supporting frame can slide along the extending direction of the end of the supporting frame. The sliding member may further be held, and the sliding member may be fixed to the building.

In this case, the sliding member fixed to the building holds the support frame slidably along the extending direction of the end portion of the support frame. As a result, since the direction of the external force is not changed, the return to origin is facilitated.
Here, the sliding member may consist of any one or more of a guide shoe, a guide pipe, and a roller support member.

(6)
A piping support device according to a sixth aspect of the present invention is the piping support device according to any one of the fifth aspect to the fifth aspect of the present invention, wherein the support frame may be formed in an H shape including a U shape.

  In this case, since it consists of the H shape which combined the U shape, the sliding distance of a sliding member can be made larger than the case of a U shape.

(7)
A pipe support method according to another aspect is a pipe support method in an expansion part of a building, and includes a sliding step for holding the support frame slidably in a horizontal plane, and a support frame having at least a U-shape. And a supporting step for supporting the central portion of the pipe having the curved portion.

  In the pipe support method according to the present invention, a sliding process for holding the support frame so as to be slidable in a horizontal plane, and a support process for supporting the central part of the pipe having a curved portion by at least a U-shaped support frame; , Including.

In this case, the U-shaped support frame whose shape does not change can be slid in the horizontal plane. Therefore, even when an external force such as an earthquake is applied to the pipe, the support base slides and moves while the pipe is supported by the support base. As a result, a pipe support method that does not place a burden on the pipe can be realized.
In particular, when a slide mechanism is incorporated in the connection part of the support frame itself (see Patent Document 1, Japanese Patent Application Laid-Open No. 11-44382), the direction of the external force needs to be changed, so there is a possibility that the origin will not return.
In the present invention, since the direction of the external force is changed without changing the direction of the external force, the return to origin is facilitated.

It is a typical perspective view showing an example of a piping support device concerning a 1st embodiment. It is a typical perspective view for demonstrating operation | movement of the support apparatus of piping when external force acts with respect to a building. It is a typical perspective view for demonstrating operation | movement of the support apparatus of piping when external force acts with respect to a building. It is a typical perspective view which shows an example of the supporting apparatus of piping concerning 2nd Embodiment. It is a typical perspective view which shows an example of the supporting apparatus of piping concerning 3rd Embodiment. It is a typical perspective view which shows an example of the supporting apparatus of piping concerning 4th Embodiment. It is a typical perspective view which shows an example of the supporting apparatus of piping concerning 5th Embodiment. It is a typical perspective view showing an example of a piping support device concerning a 6th embodiment. It is a typical perspective view which shows a further example of the support apparatus of piping. It is a typical perspective view which shows a further example of the support apparatus of piping.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same elements are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.

(First embodiment)
FIG. 1 is a schematic perspective view illustrating an example of a support device 100 for a pipe 200 according to the first embodiment. In the following description, the description is based on the xy axes shown in FIG.

(Supporting device 100)
As shown in FIG. 1, the support device 100 for the pipe 200 includes an H-shaped support part 110, a holding part 120 attached to the support part 110, and a support member 130 fixed vertically downward from the holding part 120. .

(Supporting part 110)
The support part 110 in FIG. 1 has an H shape. In the support part 110, the support bar 111 and the support bar 112 extend in the y direction, and are arranged in parallel to each other. Further, a support bar 113 is fixed between the support bars 111 and 112 in the x direction. That is, one end of the support bar 113 is vertically connected to the center part of the support bar 111, and the other end of the support bar 113 is vertically connected to the center part of the support bar 112.
The support 110 uses, for example, an outer surface anticorrosive steel pipe (a fireproof VS pipe for fire fighting or a hard vinyl chloride lined steel pipe with an outer surface coating) to prevent corrosion. The support bar 111 and the support bar 113, and the support bar 112 and the support bar 113 are fixed by welding or rolling screws, respectively.

In the present embodiment, the support part 110 is made of an outer surface anticorrosive steel pipe, but is not limited to this, and other steels, cast iron, stainless steel, copper, etc., as long as the required strength is satisfied. Metals, resins such as polyvinyl chloride and polyethylene, composite materials such as fiber reinforced plastics, and other arbitrary materials may be used.
Moreover, when using said metal, you may provide the resin coating film or resin film for corrosion prevention on the surface.

(Holding part 120)
As shown in FIG. 1, the holding unit 120 has a cross shape in the xy direction, and has rollers 121 at both ends in the x direction. The holding unit 120 in FIG. 1 is placed on the support unit 110. The holding unit 120 can be moved in the x direction on the support bar 113 by the roller 121.
Support members 130 are fixed to both end portions of the holding portion 120 in the y direction.

  In the following embodiments, the roller 121 is used. However, the present invention is not limited to this, and the roller 121 is not used as long as the holding unit 120 can move smoothly with respect to the support rod 113. May be.

(Supporting member 130)
In the present embodiment, the support member 130 is composed of a cylindrical rod member having rigidity.
One end side of the support member 130 is fixed to the holding unit 120. Further, the other end side of the support member 130 is fixed to the pipe 200. The other end side of the support member 130 and the pipe 200 are fastened by a suspension band.

In the following embodiments, the support member 130 is made of a rigid rod member. More specifically, as long as the required rigidity is satisfied, steel, cast iron, stainless steel, copper A metal such as, a resin such as polyvinyl chloride or polyethylene, a composite material such as a fiber reinforced plastic, or any other material may be used.
Moreover, when using said metal, you may provide the resin coating film or resin film for corrosion prevention on the surface.

  Furthermore, the support member 130 is not limited to the columnar shape shown in FIG. 1, and the cross-sectional shape may be C steel, H steel, L steel, cylindrical shape, square bar shape, or the like.

(Slide device 140)
As shown in FIG. 1, a slide device 140 is provided on the support portion 110 having an H shape. The slide device 140 includes a pair of slide devices 141 and a pair of slide devices 142. The slide device 140 is fixed to a building, more specifically, a foundation portion of the building. Moreover, the slide device 140 is specifically a guide shoe made of a roller hardware.
In each of the following embodiments, the case where the slide device 140 is a guide shoe made of a metal roller will be described. However, the present invention is not limited to this, and any other slidable type such as a sliding type guide shoe is described. It may be a member.

  Of the pair of slide devices 141 and 142 in the present embodiment, the pair of slide devices 141 supports the support bar 112 of the H-shaped support portion 110 so as to be movable in the direction of arrow y, and the pair of slide devices 142. Supports the support bar 111 of the H-shaped support part 110 so as to be movable in the direction of the arrow y.

(Piping 200)
The pipe 200 according to the present embodiment is a water supply pipe made of a high performance polyethylene pipe. The high-performance polyethylene pipe is made of, for example, a “PE100 grade” polyethylene material that has extremely high earthquake resistance, creep performance and strength. Specifically, a polyethylene pipe (Esuro Hyper [registered trademark] AW) is used. In addition, examples of the pipe 200 include a synthetic rubber pipe, a stainless steel flexible pipe, a blade hose pipe, and a stainless mesh pipe.

In the present embodiment, as shown in FIG. 1, the pipe 200 includes a first pipe part 210, a second pipe part 220, a third pipe part 230, and curved parts 215 and 225.
The first piping part 210 of the pipe 200 is provided extending in the x direction, the bending part 215 is provided at the end of the first piping part 210, and the second piping part 220 in which the bending part 215 extends in the y direction. Is connected to one end. A curved portion 225 is provided at the other end of the second piping section 220 and is connected to a third piping section 230 extending in the x direction.

(Position of the pipe 200 to be fastened with the support member)
As shown in FIG. 1, in the present embodiment, a suspension band is provided at each of positions A1 and A2 that are equidistant in the y direction with the center of gravity G of the pipe 200 as a center. 130 is provided.

(Operation of the support device 100 for the pipe 200 when an external force is applied)
Next, FIGS. 2 and 3 are schematic perspective views for explaining the operation of the support device 100 for the pipe 200 when an external force is applied to the building. FIG. 2 shows a case where an external force is applied in the x direction, and FIG. 3 shows a case where an external force is applied in the y direction.

  First, as shown in FIG. 2, when an external force is applied in the x direction, the pipe 200 moves in the x direction. In this case, the support device 100 for the pipe 200 absorbs the movement of the pipe 200 by moving relative to the support bar 113 in the direction opposite to the x direction by the roller 121 of the holding unit 120.

Further, when the external force in the x direction disappears, the pipe 200 moves in a direction to return to the position of the origin, and the support device 100 of the pipe 200 easily moves on the support rod 113 in the x direction by the roller 121 of the holding unit 120. The pipe 200 can be returned to the origin by relative movement.
That is, since the force applied to the pipe 200 in the x direction is absorbed only by the movement of the support device 100 in the x direction, the origin can be easily returned.

  Further, as shown in FIG. 3, when an external force is applied in the y direction, the pipe 200 moves in the y direction. In this case, the support device 100 of the pipe 200 absorbs the movement of the pipe 200 by the relative movement of the support unit 110 in the direction opposite to the y direction by the pair of slide devices 141 and the pair of slide devices 142.

In addition, when the external force in the y direction disappears, the pipe 200 moves in a direction to return to the position of the origin, and in the support device 100 of the pipe 200, the support unit 110 is moved by the pair of slide devices 141 and the pair of slide devices 142. The pipe 200 can be returned to the origin by being relatively moved in the y direction easily.
That is, since the force applied to the pipe 200 in the y direction is absorbed only by the movement of the support device 100 in the y direction, the origin can be easily returned.

(Space for the expected travel distance of the pipe 200)
Moreover, the margin of the surrounding space at the time of operation | movement of the support apparatus 100 of the piping 200 is demonstrated. When an external force is applied, the assumed horizontal moving radius of the pipe 200 is R (hereinafter abbreviated as moving radius R).
Specifically, the moving radius R is assumed to be in the range of 5 cm to 15 cm. The interlayer displacement of the building is 1/100 to 1/200. That is, the degree is within a range from a displacement gradient of 1 mm to 100 mm to a displacement gradient of 1 mm to 200 mm. In this case, since the displacement in the vertical vertical direction (z direction) is less than 1 mm, the vertical vertical displacement can be ignored. Therefore, in this case, the support device 100 for the pipe 200 needs to absorb the movement of the moving radius R in the horizontal direction.

In this case, the distance between the connecting portion of the support rod 111 and the support rod 113 and the holding portion 120 is preferably 1.1R or more, and the connecting portion of the support rod 111 and the support rod 113 and a pair of slide devices It is preferable that the distance between one of 141 is 1.1R.
Further, the distance between the connecting portion of the support rod 112 and the support rod 113 and the holding portion 120 is desirably 1.1 R or more. The connecting portion of the support rod 112 and the support rod 113 and the pair of slide devices 142 are desirable. It is desirable that the distance between one of these is 1.1R.
That is, it is desirable to provide a margin of 10% or more with respect to the moving radius R.

(Second Embodiment)
Next, FIG. 4 is a schematic perspective view illustrating another example of the support device 100a of the pipe 200 according to the second embodiment, which is another example of the first embodiment. In the second embodiment, only differences from the support device 100 for the pipe 200 in the first embodiment will be described.

  As shown in FIG. 4, a support device 100 a for the pipe 200 is provided instead of the support device 100 for the pipe 200.

The support device 100 a of the pipe 200 includes a holding unit 120 a instead of the holding unit 120. The holding part 120 a has a diameter larger than the outer diameter of the support bar 113. For example, when the support rod 113 is SGP-VD80A, the holding unit 120a is configured by SGP-VD100A. In addition, rollers 121 are provided at both ends in the x direction of the holding unit 120a. The holding unit 120 a can be moved on the support bar 113 by the roller 121.
A support member 130a is fixed at the center of the holding portion 120a.

In the second embodiment, the support member 130a is made of a rigid rod member.
One end side of the support member 130a is fixed to the holding portion 120a. Further, the other end side of the support member 130 a is fixed at the center of gravity position G of the pipe 200. The other end side of the support member 130a and the pipe 200 are fastened by a suspension band.

(Third embodiment)
Next, FIG. 5 is still another example of the first embodiment, and is a schematic perspective view showing an example of a support device 100b of the pipe 200 according to the third embodiment. In the third embodiment, only differences from the support device 100 for the pipe 200 in the first embodiment will be described.

  As shown in FIG. 5, a support device 100 b for the pipe 200 is provided instead of the support device 100 for the pipe 200.

The support device 100 b of the pipe 200 includes a holding unit 120 b instead of the holding unit 120. In addition, rollers 121b are provided at both ends in the x direction of the holding portion 120b. The holding part 120b can be moved on the support bar 113 by the roller 121b.
In this embodiment, support member 130 is not provided. In this embodiment, the support member 130 is not provided. However, the present invention is not limited to this, and when there is a distance between the support device 100b and the pipe 200, the support member 130b (not shown). ) May be provided so as to support the pipe 200 vertically upward from the holding portion 120b.
In addition, since the support member 130 is not provided, it is desirable to use a material having a hardness equal to or less than the material of the pipe 200 for the holding unit 120b.

(Fourth embodiment)
Next, FIG. 6 is still another example of the first embodiment, and is a schematic perspective view showing an example of a support device 100c of the pipe 200 according to the fourth embodiment. Note that in the fourth embodiment, only differences from the support device 100 for the pipe 200 in the first embodiment will be described.

  As shown in FIG. 6, a support device 100 c for the pipe 200 is provided instead of the support device 100 for the pipe 200.

  The support device 100 c of the pipe 200 includes a holding unit 120 c instead of the holding unit 120, and includes a support member 130 c instead of the support member 130. The holding part 120c has a rectangular frame shape.

  The support member 130c is provided with suspension bands at positions A1 and A2 that are equidistant in the y direction from the four corners of the rectangular frame shape around the center of gravity G of the pipe 200, and the support member 130c is provided on the suspension band. It is done.

(Fifth embodiment)
Next, FIG. 7 is still another example of the first embodiment, and is a schematic perspective view showing an example of a support device 100d of the pipe 200 according to the fifth embodiment. In the fifth embodiment, only differences from the support device 100 for the pipe 200 in the first embodiment will be described.

  The support part 110d according to the fifth embodiment includes a support part 110d having an H shape, as in the first to fourth embodiments. In the fifth embodiment, the support portion 110d includes a support rod 111 and a support rod 112 that extend in the x direction and are arranged in parallel to each other. Further, a support bar 113 is fixed between the support bars 111 and 112 in the y direction. That is, the support bar 113 is vertically connected to the center part of the support bar 111, and the support bar 113 is vertically connected to the center part of the support bar 112.

Unlike the support device 100 according to the first embodiment, the support device 100d is in a state of being rotated 90 degrees in a horizontal plane.
In the support device 100d, the support rod 113 is provided with a holding portion 120d. The holding part 120d extends in the y direction, and rollers 121d are provided at both ends. The holding part 120d can be moved in the y direction on the support bar 113 by the roller 121d.
Support members 130 are fixed to both end portions of the holding portion 120d in the y direction.

(Sixth embodiment)
Next, FIG. 8 is still another example of the first embodiment, and is a schematic perspective view showing an example of a support device 100e of the pipe 200 according to the sixth embodiment. Note that in the sixth embodiment, only differences from the support device 100 for the pipe 200 in the first embodiment will be described.

In the support device 100e for the pipe 200 according to the sixth embodiment, the support portion 110e includes a support rod 111 and a support rod 112 that extend in the y direction and are arranged in parallel to each other. Further, a support bar 113 and a support bar 114 are fixed between the support bars 111 and 112 in the x direction.
That is, the support bar 113 is vertically connected to one end of the center part of the support bar 111, and the support bar 114 is vertically connected to the other end of the center part of the support bar 112.
The support bar 113 and the support bar 114 are arranged in parallel.

  As shown in FIG. 8, the holding part 120e is made of a pair of parallel members, and has rollers 121 at both ends in the x direction of the support bars 113 and 114, respectively.

  In the present embodiment, one end side of the support member 130e is fixed to the holding portion 120e, and the other end side of the support member 130e is fixed to the pipe 200.

(Other examples)
FIG. 9 is still another example of the first embodiment, and is a diagram illustrating an example of a support device 100 f of the pipe 200. FIG. 10 is still another example of the first embodiment, and is a diagram illustrating an example of a support device 100g of the pipe 200.

  As shown in FIG. 9, the support device 100f of the pipe 200 may include a support portion 110f having a U-shape. As shown in FIG. 10, the support device 100 g of the pipe 200 may include a support portion 110 g having a U shape.

As described above, the support devices 100, 100a,..., 100g of the pipe 200 according to the present embodiment slide the support portions 110, 110a,. Can be moved.
Therefore, even when an external force such as an earthquake is applied to the pipe 200, the support parts 110, 110a,..., 110g are supported by the holding parts 120, 120a while the pipe 200 is supported by the support parts 110, 110a,. , To 120e and / or slide device 140. As a result, the supporting devices 100, 100a, to 100g of the pipe 200 that do not impose a burden on the pipe 200 can be realized.
In addition, since the movement is performed in accordance with the direction of the external force without changing the direction of the external force, twisting or sliding failure hardly occurs, and the return to the origin is easy. That is, in order to absorb the force from the x direction in the y direction, it is necessary to change the direction of the external force. However, in the support devices 100, 100a, to 100g of the present invention, the external force in the x direction is changed in the x direction. Since it is absorbed and the force in the y direction is absorbed in the y direction, it is easy to return to the origin.

  In addition, since the center of gravity G of the pipe 200 is reliably supported by the holding portions 120, 120a, 120c, 120d, 120e and the support members 130, 130a, 130c, 130e, or the holding portion 120b, the burden due to the weight of the pipe 200 is ensured. Can be absorbed into. Moreover, the load resistance of each support member 130, 130c, 130e can be reduced by supporting by the plurality of support members 130, 130c, 130e. As a result, the safety factor can be easily increased.

  Moreover, since the supporting devices 100, 100a, ..., 100g of the pipe 200 according to the present embodiment are disposed in the ceiling space between the back of the ceiling or the floor of the building, space saving and compactness are achieved. Can be realized.

  Furthermore, unlike the spring hanger support, the support devices 100, 100a,... That is, since the trouble such as the change with time of the spring does not occur, the effect can be maintained for a long time. That is, since the return of the origin does not become difficult due to the change of the spring due to the change over time, the effect can be maintained for a long time.

  In addition, since the supporting devices 100, 100a, to 100g of the pipe 200 according to the present invention are incompatible with the external force in the vertical vertical direction (z direction), it is possible to realize compactness. In addition, in order to cope with the external force in the vertical vertical direction, any device such as a shock absorber or a damper may be used as the support members 130, 130a, 130c, and 130e.

  In the present embodiment, the water supply pipe has been described as an example. However, the present invention is not limited to this and can be applied to other arbitrary pipes such as a drain pipe.

In addition, in this Embodiment, although the piping 200 has the curved parts 215 and 225, it is not limited to this, You may have another arbitrary curved shape.
Furthermore, the slide device 140 may use a U-bolt as long as it can slide.

  In the present invention, the pipe 200 corresponds to the pipe, the support devices 100, 100a, ..., 100g of the pipe 200 correspond to the support device, the curved portions 215, 225 correspond to the curved portions, and the support portions 110, 110a, ˜110g corresponds to a support frame having at least a U-shape, the slide device 140 corresponds to a sliding member, the center of gravity G corresponds to the central portion of the pipe, the holding portions 120, 120a, ˜, 120e and the support The members 130, 130a, 130c, and 130e correspond to support portions, and the positions A1 and A2 correspond to a plurality of points.

  A preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be understood that various other embodiments may be made without departing from the spirit and scope of the invention. Furthermore, in this embodiment, although the effect | action and effect by the structure of this invention are described, these effect | actions and effects are examples and do not limit this invention.

100, 100a,..., 100g Support device 110, 110a,..., 110g Support portion 120, 120a,. G Center of gravity position

Claims (7)

A support device for piping in an expansion section of a building,
Piping having a curved portion;
A support frame having at least a U-shape and a support part;
A sliding member that slidably holds the support frame in a horizontal direction,
The U-shaped support frame is a pipe support device that supports a central part of the pipe by the support part.   The pipe support device according to claim 1, wherein the support part places a central part of the pipe vertically above the U-shape.   The support portion includes a rigid rod member, and one end of the rod member is connected to the U-shaped central portion, and the other end of the rod member is connected to the central portion of the pipe. The piping support device according to 1.   The piping support apparatus according to claim 1, wherein the support portion supports the central portion at a plurality of points. A sliding member that slidably holds the support frame along the extending direction of the end of the support frame;
The piping support device according to any one of claims 1 to 4, wherein the sliding member is fixed to the building.   The piping support device according to claim 1, wherein the support frame is formed in an H shape including the U shape. A method for supporting piping in an expansion section of a building,
A sliding process for slidably holding the support frame in a horizontal plane;
And a supporting step of supporting a central portion of the pipe having the curved portion by a support frame having at least a U-shape.

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