JP2020094612A - Pipe laying method - Google Patents

Abstract

To provide a pipe laying method capable of laying a plurality of pipes efficiently without securing a large work space.SOLUTION: The present invention is a pipe laying method for dropping a vertical pipe 212 of a pipe 210 from a slab 101 and connecting it to a confluent joint 230 provided on a stand pipe 220. The pipe laying method comprises a dropping process of dropping the plurality of vertical pipes 212 from the slab 101, and a direction changing step of changing the respective directions of the vertical pipes 212 from a state where they are arranged side by side, and a connecting step of connecting each of the vertical pipes 212 to each of a plurality of upward openings A3 of the confluent joint 230 arranged around the stand pipe 220.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pipe laying method.

When laying the vertical pipes of a plurality of siphon drain pipes downstairs in an apartment house, how to lay them efficiently has been a conventional problem. As a conventional technique, a plurality of through holes are formed in a member arranged in a through hole formed in a slab, and each siphon drain pipe is passed through each of the plurality of through holes, so that the siphon drain pipe vertical There is a method of laying each pipe portion downstairs (see, for example, Patent Document 1).

JP, 2005-163750, A

As a specific example of such a laying method, each of the vertical pipe portions of the plurality of siphon drainage pipes that have been lowered downstairs are arranged along a stand pipe that penetrates each floor, and fixed with a binding band at a plurality of places of the stand pipe. It is possible to do it.

However, if the laying work of the vertical pipe portion of the siphon drain pipe is simply performed from the downstairs, the work efficiency may be deteriorated. Further, since such laying work is generally performed in a small space, there is a concern that the work will be difficult to perform. In particular, these concerns are remarkable when laying a plurality of siphon drainage pipes as described above.

An object of the present invention is to provide a pipe laying method capable of laying a vertical pipe portion of a plurality of pipes by an efficient work without requiring a large work space.

The pipe laying method according to the present invention is a pipe laying method in which vertical pipe portions of a plurality of pipes are dropped from a slab, and the vertical pipe portions of the plurality of pipes are connected to a confluent joint provided in a stand pipe. ,
Drop the vertical pipe portion of the plurality of pipes from the slab, the dropping process, and after the dropping process, the respective direction of the vertical pipe portion of the plurality of pipes, vertical pipe portion of the plurality of pipes From the state of being arranged side by side, changing so as to be arranged around the vertical pipe, after the direction changing step and the direction changing step, each of the vertical pipe portions of the plurality of pipes to the merging joint. And connecting to each of a plurality of upward connection ports arranged around the stand pipe. According to the pipe laying method of the present invention, it is not necessary to secure a large working space, and the vertical pipe portions of a plurality of pipes can be laid with efficient work.

In the pipe laying method according to the present invention, after the dropping step, the vertical pipe portions of the plurality of pipes are fixed to the vertical pipe using the first fixing tool while being arranged side by side, the first pipe. It is preferable to further include a fixing step. In this case, work efficiency can be further improved.

In the pipe laying method according to the present invention, the first fixture has a main body portion in which a plurality of through holes for passing a binding band are arranged side by side and at intervals, and for fixing the main body portion to the stand pipe. And a saddle band. In this case, work efficiency can be further improved.

In the pipe laying method according to the present invention, it is preferable that the first fixture further includes a holding portion that holds the main body portion slidably in a lateral direction, and the saddle band is fixed to the holding portion. In this case, even if the positions of the vertical pipes of the plurality of siphon drainage pipes arranged side by side and the position of the vertical pipe are slightly deviated from each other in the lateral direction, only the main body is slid with respect to the holding portion. With the simple method described above, the vertical pipe portions of the plurality of siphon drainage pipes can be fixed to the vertical pipe in a state of being arranged side by side appropriately and efficiently.

The pipe laying method according to the present invention, after the direction changing step, on the slab side from the merging joint, in the front upper part of the merging joint, each of the vertical pipe portions of the plurality of pipes, around the stand pipe. It is preferable to further include a second pipe fixing step of fixing to the stand pipe using the second fixing tool in the state of being arranged in the above. In this case, work efficiency can be further improved.

In the pipe laying method according to the present invention, it is preferable that the second fixture includes a main body portion in which a plurality of through holes for passing the binding band are arranged at intervals in a circumferential direction. In this case, work efficiency can be further improved.

In the pipe laying method according to the present invention, the second fixture has a polygonal shape of the main body portion in a plan view, and a plurality of through holes through which a restraining band is passed through a plurality of side walls of the polygonal shape. Each is preferably provided. In this case, the vertical pipe portions of the plurality of pipes can be fixed to the stand pipe around the stand pipe by a fixture having a simpler configuration.

According to the present invention, it is possible to provide a pipe laying method capable of laying a vertical pipe portion of a plurality of pipes by an efficient work without requiring a large work space.

It is a longitudinal section showing an example of a building structure provided with a siphon drainage system laid using a piping installation method concerning one embodiment of the present invention as a partial section. It is a top view which shows the siphon drainage system of FIG. It is a perspective view which shows an example of the external shape of the confluence|merging joint of FIG. FIG. 4 is a partial vertical cross-sectional view showing an example of the internal structure of the merging joint of FIG. 3. FIG. 2 is an enlarged perspective view showing a region X of FIG. 1 from below. It is an expansion perspective view which shows from the upper side the side where the vertical pipe part of piping is arrange|positioned of the 1st fixing tool shown in the area|region X of FIG. It is an expansion perspective view which shows the side by which the standpipe is arrange|positioned of the 1st fixing tool of FIG. 6 from a downward direction. It is a front view which shows the side where the vertical pipe part of piping is arrange|positioned of the main-body part which comprises the 1st fixing tool of FIG. It is a right view of the main-body part of FIG. 8A. FIG. 8B is a plan view showing the main body of FIG. 8A from above. It is a front view which shows the side where the vertical pipe part of piping is arrange|positioned of the holding part which comprises the 1st fixing tool of FIG. FIG. 9B is a right side view of the holding unit in FIG. 9A. FIG. 9B is a left side view of the holding unit in FIG. 9A. It is a top view of the holding part of FIG. 9A. It is a rear view of the holding part of FIG. 9A. It is an expansion perspective view which shows the area|region Y of FIG. 1 from an upper part. It is a top view which shows the 2nd fixing tool shown from the area|region Y of FIG. 1 from upper direction. It is a left side view of the modification of the 1st fixing tool of FIG. It is a front view which shows the side where the vertical pipe part of piping is arrange|positioned of the 1st fixing tool of FIG.

Hereinafter, a pipe laying method according to an embodiment of the present invention will be described with reference to the drawings. In the following description, the up-down direction (vertical direction) means the direction of gravity, which is the direction of gravity acting on an object. Further, the horizontal direction is a direction orthogonal to the vertical direction.

The building structure 100 illustrated in FIG. 1 is mainly used for a building such as an apartment house including a plurality of floors. The building structure 100 of FIG. 1 includes a siphon drainage system 200. The siphon drainage system 200 can use the siphon force to drain down the drainage on each floor of an apartment house.

In FIG. 1, reference numeral 101 is a slab. Reference numeral 102 is a floor material arranged on the slab 101. The floor material 102 is arranged on the joist 103. In this example, an underfloor space S is formed between the slab 101 and the floor material 102. Reference numeral 104 is a structural wall. An opening A1 is formed between the slab 101 and the structural wall 104.

The siphon drainage system 200 of FIG. 1 includes a siphon drainage pipe (pipe) 210, a stand pipe 220, and a confluent joint 230. In this example, the siphon drain pipe 210 is formed by a horizontal pipe (horizontal pipe portion) 211 and a vertical pipe (vertical pipe portion) 212 connected to the horizontal pipe 211. In this example, the horizontal pipe 211 is laid in the underfloor space S. Further, the horizontal draw pipe 211 is laid horizontally on the slab 101 with almost no gradient. In this example, the horizontal draw pipe 211 extends toward the stand pipe 220 through the opening A1. The vertical pipe 212 is dropped downstairs through the through hole A2 formed in the slab 101. The vertical pipe 212 is connected to the vertical pipe 220 via a merging joint 230. The stand pipe 220 penetrates each floor of the housing complex through a through hole A2 formed in the slab 101.

Moreover, the siphon drainage system 200 of FIG. 1 includes a plurality of siphon drainage pipes 210. In this example, as shown in FIG. 2, four siphon drain pipes 210 are provided. The four siphon drain pipes 210 can be divided into, for example, a kitchen use, a washbasin use, a bathtub use, and a laundry use, respectively. As shown in FIG. 2, a vertical pipe 212 of a plurality of siphon drain pipes 210 is connected to the merging joint 230. As shown in FIG. 2, the vertical pipes 212 of the plurality of siphon drain pipes 210 are arranged in the circumferential direction around the vertical pipe 220. Here, “around” means the circumference of an object such as a pipe, and as a specific example, means around the axis of the object. In the present embodiment, “around the stand pipe 220 ”means around the axis of the stand pipe 220 (the axis in the extending direction of the stand pipe 220 ). Further, the “circumferential direction” means a direction along the axis of an object such as a pipe. In this example, the vertical pipes 212 of the four siphon drain pipes 210 are arranged around the stand pipe 220 along the circumferential direction of the stand pipe 220.

As shown in FIGS. 3 and 4, the merging joint 230 includes a joint body 230 a that forms a flow path in the merging joint 230, an upper connecting portion 231, and a lower connecting portion 232. As shown in FIG. 4, the joint main body 230a has an upper connection portion 231 in an upper (upper drawing) opening 230A1 of the joint main body 230a, and a lower side in a lower (lower drawing) opening 230A2 of the joint main body 230a. It has a connecting portion 232. In this example, in the joint body 230a, the lower end of the lower connecting portion 232 has substantially the same shape as the stand pipe 220 and an inner diameter substantially the same as the outer diameter of the stand pipe 220 (FIGS. 3 and 4). reference). The standpipe 220 is connected to the upper connection portion 231 and the lower connection portion 232. The upper connection part 231 and the lower connection part 232 can be formed integrally with or separately from the joint body 230a.

As shown in FIG. 4, in the joint body 230a, the upper opening 230A1 in which the upper connecting portion 231 is provided has a larger diameter than the lower opening 230A2 in which the lower connecting portion 232 is provided. Further, the inner wall surface 230b of the joint body 230a is formed in a concave curved surface shape that is convex outward from the upper opening 230A1 to the vicinity of the lower opening 230A2. Since the inner wall surface 230b of the joint body 230a is formed into a concave curved surface, drainage becomes easier to flow along the guide portion 233, and the drainage is separated from the inner wall surface 230b to the joint center portion in the joint radial direction. The behavior of popping out is less likely to occur. Further, as shown in FIG. 4 and the like, the lower end portion of the joint body 230a has an inner and outer diameter substantially the same as the inner and outer diameters of the stand pipe 220 (see FIGS. 3 and 4).

In this example, the upper connecting portion 231 has a circular planar shape and is arranged so as to close the upper opening 230A1 of the confluent joint 230 (see FIGS. 3 and 4). Further, as shown in FIG. 3, the upper connection part 231 has a vertical pipe connection part 231a in the central part. As shown in FIG. 4, an upward opening A3 is formed inside the vertical pipe connecting portion 231a. The vertical pipe 220 is inserted and connected to the vertical pipe connecting portion 231a in a substantially vertical manner to communicate with the vertical pipe 220. In addition, the upper connection part 231 has a plurality of (five in this example) vertical pipe connection parts 231b around the vertical pipe connection part 231a. An upward opening A4 is formed inside the vertical pipe connecting portion 231b. In other words, the upward openings A4 of the plurality of vertical pipe connecting portions 231b are arranged around the vertical pipe 220 in the circumferential direction. With this arrangement, when the drainage from the upward opening A4 merges with the stand pipe 220, the drainages from the plurality of upward opening A4 are smoothly directed to the lower opening 230A2 without interfering with each other. Can flow. The vertical pipe 212 of the siphon drain pipe 210 is inserted and connected to the vertical pipe connecting portion 231b in a substantially vertical manner to communicate with the vertical pipe 212. Here, the positional relationship between the vertical pipe connection portions 231b is such that drainage from the plurality of vertical pipes 212 can be smoothly merged, so that when the drainages simultaneously flow out from the adjacent vertical pipes 212, the drainages merge. It is assumed that the positional relationship is such that, when flowing inside the joint 230, it spreads in a fan shape and does not interfere with each other in the flow paths.

The upward opening A4 of the vertical pipe connecting portion 231b is, together with the upward opening A3 of the vertical pipe connecting portion 231a, a confluence of the drainage channel r1 of the vertical pipe 220 and the drainage channel r2 of the vertical pipe 212 of the siphon drain pipe 210, That is, it can function as a connection port for the vertical pipe 212 of the siphon drain pipe 210 to the vertical pipe 220. Thereby, the drainage from the drainage channel r2 of the vertical pipe 212 connected to the vertical pipe connecting portion 231b flows into the inside of the merging joint 230, and the inside of the merging joint 230 is connected to the vertical pipe connecting portion 231a. The drainage from the drainage channel r1 of the vertical pipe 220 flows in (see FIG. 4).

In this example, the lower connection portion 232 can insert and fit the stand pipe 220. The lower connection portion 232 is formed in a cylindrical shape having an inner diameter substantially the same as the outer diameter of the stand pipe 220 (see FIG. 4). By inserting and fitting the vertical pipe 220 into the lower connecting portion 232, the lower side of the merging joint 230 is communicated with the vertical pipe 220, and the drainage of the drainage channel r1 inside the merging joint 230 is achieved. The drainage of the drainage channel r2 merges and flows out to the lower stand pipe 220 (see FIG. 4). However, the configuration of the lower connecting portion 232 is not particularly limited as long as the drainage in the merging joint 230 is appropriately configured to flow into the lower stand pipe 220.

Next, a pipe laying method according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. In the pipe laying method according to the present embodiment, the vertical pipes 212 of the plurality of siphon drainage pipes 210 are dropped from the slab 101, and the vertical pipes 212 of the plurality of siphon drainage pipes 210 are joined to the joint pipe 230 provided on the vertical pipe 220. Connect to. The pipe laying method according to the present embodiment is mainly realized by executing the following three steps.

[Piping guide process]
The pipe guiding step is a step of guiding a plurality of pipes toward the through hole A2 formed in the slab 101. In the pipe guiding step, the plurality of pipes are laid in various arrangements on the slab 101 as a result of guiding to the through hole A2. The plurality of pipes can be radially arranged toward the through holes A2 formed in the slab 101 in a plan view, for example. Alternatively, the plurality of pipes can be arranged side by side in the plan view toward the through hole A2 formed in the slab 101. Here, “arranged side by side” means that a plurality of pipes are laterally adjacent to each other on the same plane so that axes of the pipes (extension direction axis lines of the pipes) are substantially parallel to each other. It means to arrange. The “lateral direction” means a direction orthogonal to the axis of the pipe when seen in a plan view. That is, “arranged side by side” means that a plurality of pipes are arranged side by side in the horizontal direction so as to be parallel to each other (including “substantially parallel”) on the same plane. In addition, "horizontally side-by-side" means that the axes of a plurality of pipes are generally arranged in parallel on the surface of an arbitrary space, but they may not be completely parallel. Moreover, as for the arrangement of the plurality of pipes, it is sufficient if there is a part that is horizontally aligned as a part of the plurality of pipes. However, for the convenience of the pipe laying work, it is preferable that the plurality of pipes be kept in a side-by-side state until they are arranged around the stand pipe 220 after the slab 101 is penetrated, as described later. Further, it is more preferable that the plurality of pipes are arranged side by side before the slab 101 is penetrated, as described later. Each of the plurality of pipes can be independently led to the through hole A2. Alternatively, the plurality of pipes can be simultaneously led to the through hole A2.

In the pipe laying method according to the present embodiment, in the pipe guiding step, the four siphon drain pipes 210 are formed in the slab 101 so as to be arranged side by side in a plan view as shown in FIG. It is guided toward the hole A2. Specifically, as shown in FIG. 1, the four siphon drainage pipes 210 are arranged on the slab 101 so as not to overlap each other, and through the opening A1 of the structural wall 104 toward the through hole A2 of the slab 101. Extend it. Further, in the present embodiment, as shown in FIG. 2, the four siphon drain pipes 210 are arranged side by side in the lateral direction so as to be parallel to each other in a plan view. At this time, each of the four siphon drain pipes 210 can be independently led to the through hole A2. Alternatively, each of the four siphon drain pipes 210 can simultaneously lead to the through hole A2.

[Drop process]
The dropping step is a step of dropping the vertical pipe portions of the plurality of pipes from the slab 101. Specifically, in the dropping step, after the pipe guiding step, the plurality of pipes led to the through hole A2 formed in the slab 101 are dropped downstairs through the through hole A2. Plural pipes can be dropped in various ways. For example, each of the plurality of pipes can be dropped independently. Alternatively, each of the plurality of pipes can be dropped at the same time. At this time, the plurality of pipes can be dropped in a disarray. Alternatively, the plurality of pipes can be dropped in a fixed arrangement, as described above.

In the pipe laying method according to the present embodiment, in the dropping step, the vertical pipes 212 of the four siphon drainage pipes 210 are dropped from the slab 101 in a state where they are arranged side by side. Specifically, as shown in FIGS. 1 and 2, with the four siphon drain pipes 210 arranged side by side, the vertical pipes 212 of these siphon drain pipes 210 are dropped downstairs from a through hole A2 formed in the slab 101. To be crowded. As a result, in the present embodiment, the vertical pipes 212 of the four siphon drain pipes 210 can be hung from the slab 101 downstairs while being arranged side by side.

[Direction changing process]
In the direction changing step, after the dropping step, the respective directions of the vertical pipe portions of the plurality of pipes are arranged around the vertical pipe from a state in which the vertical pipe portions of the plurality of pipes are arranged side by side. Change to be done. In the orientation changing step, the vertical pipe portions of the plurality of pipes may be arranged side by side when arranged around the stand pipe. That is, in the direction changing step, the timing at which the vertical pipe portions of the plurality of pipes are arranged side by side is appropriately changed depending on the dropping method in the dropping step. For example, as described above, the vertical pipe portions of the plurality of pipes can be in a state of being arranged side by side in advance in the dropping step. Alternatively, the vertical pipe portions of the plurality of pipes may be arranged side by side in the direction changing process, with the vertical pipe portions of the plurality of pipes dropped separately in the dropping process.

Further, in the direction changing step, the respective directions of the vertical pipe portions of the plurality of pipes can be changed separately for each vertical pipe portion of each pipe. Alternatively, the respective directions of the vertical pipe portions of the plurality of pipes can change the vertical pipe portions of the plurality of pipes at the same time. In the direction changing step, it is preferable to change the vertical pipe portions of a plurality of pipes at the same time in view of construction of the pipes and work space.

In the pipe laying method according to the present embodiment, in the direction changing step, the vertical pipes 212 of the four siphon drainage pipes 210 are suspended from the slab 101 from the state in which they are arranged side by side in advance. Therefore, in the present embodiment, the vertical pipes 212 of the four siphon drain pipes 210 are placed around the vertical pipe 220 while the vertical pipes 212 of the plurality of siphon drain pipes 210 are arranged side by side. To be arranged in. Specifically, in the present embodiment, as shown in FIG. 2, the vertical pipes 212 of the four siphon drainage pipes 210 initially hang down at a position lower than the slab 101 while being arranged side by side. doing. Therefore, in the present embodiment, the orientations of the vertical pipes 212 of the four siphon drain pipes 210 are changed so that the vertical pipes of the four siphon drain pipes 210 are arranged around the vertical pipe 220. In detail, the vertical pipes of the four siphon drain pipes 210 make each of the stand pipes 220 along the outer circumference of the stand pipe 220, and arrange around the stand pipe 220 over a half circumference around the stand pipe 220. ..

[Connection process]
After the direction changing step, in the connecting step, each of the vertical pipes 212 of the plurality of siphon drainage pipes 210 is formed in the merging joint 230, and is arranged around the stand pipe 220. Connect to each of the parts A4.

As described above, according to the pipe laying method of the present embodiment, the vertical pipes 212 of the plurality of siphon drain pipes 210 are dropped from the slab 101, and the vertical pipes 212 of the plurality of siphon drain pipes 210 are connected to the vertical pipe 220. The vertical pipe 212 of the siphon drain pipe 210 can be laid up to the vertical pipe 220 by connecting to the merging joint 230 provided in the.

As described above, in the pipe laying method according to the present embodiment, since the vertical pipes 212 of the plurality of siphon drain pipes 210 are dropped from the slab 101, the through holes A2 of the slab 101 through which the plurality of siphon drain pipes 210 pass are intermittent or continuous. And it will be lined up in the horizontal direction. Therefore, the work space is small and the construction is easy. Further, in the pipe laying method according to the present embodiment, the vertical pipes 212 of the plurality of siphon drainage pipes 210 are arranged in the vertical pipes from the state where the vertical pipes 212 of the plurality of siphon drainage pipes 210 are arranged side by side. After being changed so as to be arranged around 220, by connecting each of the vertical pipes 212 of the plurality of siphon drainage pipes 210 around the vertical pipe 220 with respect to the confluence joint 230, the plurality of siphon drainages are connected. Each of the vertical pipes 212 of the pipe 210 can be collectively and efficiently connected to the merging joint 230 without securing a large working space. Further, in the pipe laying method according to the present embodiment, since each of the vertical pipes 212 of the plurality of siphon drainage pipes 210 is connected around the vertical pipe 220 with respect to the confluence joint 230, the drainage from each siphon drainage pipe 210 is performed. When the water flows into the vertical pipe 220, the drainages from the plurality of siphon drainage pipes 210 can smoothly flow toward the lower opening 230A2 without interfering with each other.

Therefore, according to the pipe laying method according to the present embodiment, it is not necessary to secure a large work space, and the vertical pipes 212 of the plurality of siphon drain pipes 210 can be laid with efficient work.

In the pipe laying method according to the present embodiment, after the dropping step, the vertical pipes 212 of the plurality of siphon drain pipes 210 are vertically piped using the first fixing tool (fixing tool) 10 in a state of being arranged side by side. It is preferable to further include a first pipe fixing step of fixing to 220. The first fixture 10 is an upper-side fixture arranged on the upper portion of the vertical pipe 212. In the present embodiment, as shown in FIG. 5, the vertical pipes 212 of the five siphon drainage pipes 210 are fixed to the vertical pipe 220 using the first fixing tool 10 while being arranged side by side. In the present embodiment, after the dropping step and before the direction changing step, the vertical pipes 212 of the five siphon drain pipes 210 are fixed to the vertical pipe 220 using the first fixing tool 10. In this case, since the vertical pipe 212 of the siphon drainage pipe 210 is fixed to the vertical pipe 220 by the first fixing tool 10, the siphon drainage can be performed only by the first fixing tool 10 without using any other support material. The vertical tube 212 of the tube 210 can be fixed. Further, in this case, if the first pipe fixing step is performed before the direction changing step as in the present embodiment, in the direction changing step, the vertical pipes 212 of the plurality of siphon drainage pipes 210 are removed. The orientation can be changed easily. Thus, in the pipe laying method according to the present embodiment, if the first fixture 10 is used, the work efficiency can be further improved.

In the pipe laying method according to the present embodiment, the first fixture 10 includes a main body portion 11 in which a plurality of through holes for passing the binding band B are arranged side by side and at intervals, and the main body portion 11 is fixed to the stand pipe 220. It is preferable to include a saddle band 12 for In this case, the vertical fixtures 212 of the plurality of siphon drainage pipes 210 can be laterally fixed to the vertical pipe 220 by the first fixture 10 having a simple structure, and thus work efficiency can be further improved. it can.

More preferably, the first fixture 10 further includes a holding portion 13 that holds the main body portion 11 slidably in the lateral direction, and the saddle band 12 is preferably fixed to the holding portion 13. In this case, even if the positions of the vertical pipes 212 of the plurality of siphon drainage pipes 210 arranged side by side and the positions of the vertical pipes 220 are slightly deviated from each other in the lateral direction, the main body 11 is held with respect to the holding portion 13. It is possible to fix the vertical pipes 212 of the plurality of siphon drain pipes 210 to the vertical pipe 220 in a state of being arranged side by side by a simple method of simply sliding the vertical pipes 212.

FIG. 6 is an enlarged perspective view showing the side of the fixture 10 on which the vertical pipe 212 of the siphon drain pipe 210 is arranged from above. FIG. 7 is an enlarged perspective view showing the side of the first fixture 10 on which the stand pipe 220 is arranged from below. FIG. 8A is a front view showing the side of the body 11 of the first fixture 10 on which the vertical pipe 212 of the siphon drain pipe 210 is arranged. FIG. 8B is a right side view of the main body portion 11 of the first fixture 10. FIG. 8C is a plan view showing the main body 11 from above. FIG. 9A is a front view showing the side of the holding portion 13 where the vertical pipe 212 of the siphon drain pipe 210 is arranged. FIG. 9B is a right side view of the holding unit 13. FIG. 9C is a left side view of the holding unit 13. FIG. 9D is a plan view of the holding unit 13. FIG. 9E is a rear view of the holding unit 13.

As shown in FIG. 5, in the pipe laying method according to this embodiment, the first fixture 10 includes a main body portion 11 and a holding portion 13 to which the saddle band 12 is fixed. On the front side wall 11a of the main body 11, five binding bands B are arranged side by side and at intervals. In the present embodiment, the front side wall 11a of the main body 11 is a side wall of the siphon drain pipe 210 on which the vertical pipe 212 is arranged. As shown in FIG. 6 and the like, on the front side wall 11a of the main body portion 11, a plurality of pairs of through holes 11h1 for passing the binding band B are formed laterally at intervals. FIG. 7 shows a state in which the binding band B is attached to the main body 11 through the pair of through holes 11h1. In addition, in this embodiment, five binding bands B are attached to the main body portion 11, but a part of the binding band B is omitted in FIGS. 6 and 7.

The binding band B can directly fix the vertical pipe 212 of the siphon drain pipe 210 to the first fixture 10. In the present embodiment, the binding band B fixes the sleeve cover 14 to the main body 11. The sleeve cover 14 has a through hole 14 a for passing the vertical pipe 212 of the siphon drain pipe 210. In this case, the vertical pipe 212 of the siphon drain pipe 210 can be indirectly fixed to the first fixture 10 only by passing it through the through hole 14 a of the sleeve cover 14.

In the present embodiment, as shown in FIG. 8B and the like, the main body portion 11 is an L-shaped angle plate member formed by the front side wall 11a and the upper surface wall 11b. Both the front side wall 11a and the upper side wall 11b are formed into flat side walls. Further, in the present embodiment, as shown in FIG. 9C and the like, the holding portion 13 is a U-shaped angle plate member formed by a front side wall 13a, a top side wall 13b, and a back side wall 13c. The front side wall 11a, the top side wall 13b, and the back side wall 13c are all formed into flat side walls. Thus, if the main body 11 and the holding portion 13 are angle plate members, the main body 11 and the holding portion 13 can be easily formed by press-molding a single metal plate or the like.

When the main body 11 is an L-shaped angle plate member and the holding portion 13 is a U-shaped angle plate member, the main body portion 11 has a top wall 11 b of the main body portion 11 on the top wall 13 b of the holding portion 13. It can be mounted on the holding portion 13 by placing it on it. Further, the main body portion 11 can serve as a guide by aligning the front side wall 11a of the main body portion 11 with the front side wall 13a of the holding portion 13. Thereby, as shown in FIGS. 6 and 7, the main body portion 11 and the holding portion 13 can be slid laterally with respect to each other.

Further, in the present embodiment, as shown in FIG. 8C, a plurality of slide holes 11h2 are formed in the upper surface wall 11b of the main body 11. The slide holes 11h2 are long holes extending in the horizontal direction, and are formed at intervals in the horizontal direction. Further, in the present embodiment, as shown in FIG. 9D, a plurality of pin holes 13h2 are formed in the upper surface wall 13b of the holding portion 13. The pin holes 13h2 are round holes and are formed at intervals in the lateral direction. In this case, if the slide hole 11h2 of the main body portion 11 and the pin hole 13h2 of the holding portion 13 are associated with each other by the fastening element 15, the main body portion 11 and the holding portion 13 are slid in the lateral direction while the main body portion 11 is slid. And the holding portion 13 can be fixed at an appropriate position. The fastening element 15 may be a fastening element including a bolt 15a and a nut 15b. The bolt 15a is attached to the pin hole 13h2, and the nut 15b can be screwed to the bolt 15a via the main body 11 and the holding portion 13. In particular, in this example, as shown in FIGS. 9A to 9E, the upper surface wall 13b of the holding portion 13 has a projecting portion 13b1 which projects laterally more than the front side wall 13a and the rear side wall 13c. In this example, the saddle band 12 and the fastening element 15 are not aligned in the front view by forming the pin hole 13h2 in the projecting portion 13b1. Accordingly, even when the first fixture 10 fixes the vertical pipe 212 and the vertical pipe 220 of the siphon drain pipe 210, by operating the fastening element 15, the main body portion 11 and the holding portion 13 are slid. At the same time, its positioning becomes possible.

Further, in the present embodiment, as shown in FIGS. 9A and 9E, mounting holes 13h3 for fixing the saddle band 12 are formed in each of the front side wall 13a and the rear side wall 13c of the holding portion 13. The holding portion 13 and the saddle band 12 can be attached to and detached from each other by attaching the fastening element 16 (for example, the bolt 16a and the nut 16b) to the attachment hole formed in the saddle band 12 and the attachment hole 13h3 of the holding portion 13. Can be attached to. In this case, if the mounting direction of the saddle band 12 is changed with respect to the holding part 13 and the front side wall 11a of the main body part 11 is fitted to the rear side wall 13c of the holding part 13, the vertical pipe 212 of the siphon drain pipe 210 can be installed. Even when the position and the position of the stand pipe 220 are reversed, one type of the fixture 10 is sufficient.

Further, the pipe laying method according to the present embodiment, after the direction changing step, on the slab 101 side of the confluence joint 230, that is, in the front upper portion of the confluence joint 230, each of the vertical pipes 212 of the siphon drain pipes 210. It is preferable to further include a second pipe fixing step of fixing the above to the stand pipe 220 by using the second fixture 20 while being arranged around the stand pipe 220. The second fixture 20 is a lower-side fixture that is arranged below the vertical tube 212. In the present embodiment, as shown in FIG. 10, the second fixing tool 20 is used while the vertical pipes 212 of the five siphon drain pipes 210 are arranged around the vertical pipe 220 at the upper front side of the confluent joint 230. Fixed to the vertical pipe 220. In the present embodiment, after the direction changing step and before the connecting step, the vertical pipes 212 of the five siphon drain pipes 210 are fixed to the vertical pipe 220 using the second fixing tool 20. In this case, since the vertical pipe 212 of the siphon drain pipe 210 is fixed to the vertical pipe 220 also by the second fixture 20, without using any other support material, only the first fixture 10 can be used. The vertical pipe 212 of the siphon drain pipe 210 can be fixed. Further, in this case, if it is performed after the direction changing step and before the connecting step as in the present embodiment, each of the vertical pipes 212 of the plurality of siphon drain pipes 210 is connected to the confluent joint 230. Can be easily connected around the stand pipe 220. As described above, in the pipe laying method according to the present embodiment, if the second fixture 20 is used, work efficiency can be further improved.

In the pipe laying method according to the present embodiment, it is preferable that the second fixture 20 includes a main body portion 21 in which a plurality of through holes for passing the binding band B are arranged at intervals in the circumferential direction. In this case, the vertical pipes 212 of the plurality of siphon drain pipes 210 can be fixed around the vertical pipe 220 with respect to the vertical pipe 220 by the fixture 20 having a simple structure, thus further improving the work efficiency. Can be made

FIG. 10 is an enlarged perspective view showing the region Y of FIG. 1 from above. FIG. 11 is a plan view showing the second fixture 20 from above. It is preferable that the main body 21 of the second fixture 20 has a polygonal shape, and a plurality of through holes through which the binding band B is passed are provided on each of a plurality of side walls of the polygonal shape. In this case, the vertical fixtures 212 of the plurality of siphon drainage pipes 210 can be fixed to the stand pipe 220 around the stand pipe 220 by the second fixture 20 having a simpler configuration. Further, in this case, the second fixture 20 can be easily formed only by bending such as press molding.

As shown in FIG. 10, in the pipe laying method according to the present embodiment, the second fixture 20 is clamped to the outer peripheral surface of the stand pipe 220 of the siphon drain pipe 210 by the body portion 21 of the second fixture 20. ing. As shown in FIG. 11, the main body portion 21 is a plate member formed in a polygonal shape in a plan view. In the present embodiment, the main body 21 is formed in an octagonal shape. A plurality of through holes 21h1 for passing the binding band B is formed in the peripheral side wall 21a of the main body portion 21. In this embodiment, the through hole 21h1 is formed in each of the five peripheral side walls 21a. Further, in the present embodiment, the sleeve portion 21b is provided on the peripheral side wall 21a of the main body portion 21. The sleeve portion 21b has a through hole formed to extend in the lateral direction, and the through hole 21h1 is formed by the through hole. In addition, in FIG. 11, one sleeve portion 21b is shown in a cross section, and a state in which the binding band B is passed through the through hole 21h1 of the sleeve portion 21b is shown.

The binding band B can fix the vertical pipe 212 of the siphon drain pipe 210 directly to the second fixing tool 20, as with the first fixing tool 10. In the present embodiment, the binding band B fixes the sleeve cover 14 to the main body 21 as in the fixture 10. Also in this case, the vertical pipe 212 of the siphon drain pipe 210 can be indirectly fixed to the second fixing tool 20 only by passing it through the through hole 14 a of the sleeve cover 14.

As shown in FIG. 11, in the present embodiment, the main body portion 21 is an octagonal angle plate member in plan view. As described above, when the body portion 21 is the angle plate member, the body portion 21 can be easily formed by press-molding a single metal plate or the like. Further, in the present embodiment, as shown in a partial cross section in FIG. 11, fastening through holes 21h2 are formed in each of the two terminal side outer peripheral side walls 21e of the main body 21. In this case, if the fastening elements 17 are attached to the two fastening through holes 21h2, the second fixing tool 20 can be fixed at an appropriate position on the stand pipe 220. The fastening element 17 may be a combination element of a bolt 17a and a nut 17b. In this case, if the screwing amount of the bolt 17a and the nut 17b is adjusted, the clamping force generated between the two terminal side outer peripheral side walls 21e can be adjusted appropriately.

FIG. 12 is a left side view of the first fixture 30 as the upper fixture. FIG. 13 is a front view of the first fixture 30. The first fixture 30 is a modified example of the first fixture 10 shown in FIGS. 5 to 7. In the following description, the same components as those of the first fixture 10 will be denoted by the same reference numerals, and the description thereof will be omitted.

In FIG. 12, reference numeral 30 is a first fixing tool as an upper fixing tool. In this example, the first fixture 30 includes a body portion 31 and a saddle band 12. The main body 31 is a U-shaped angle plate member formed by a front side wall 31a, a top side wall 31b, and a back side wall 31c. The front side wall 31a, the top side wall 31b, and the back side wall 31c are all formed into flat side walls. On the front side wall 31a, a plurality of pairs of through holes 31h1 for passing the binding band B through are formed laterally at intervals. In this example, the through hole 31h1 is a long hole extending in the lateral direction.

The binding band B can fix the vertical pipe 212 of the siphon drain pipe 210 directly to the first fixture 30 as in the first fixture 10. In the present embodiment, the binding band B fixes the sleeve cover 14 to the main body 11 similarly to the first fixing tool 10. In this case, the vertical pipe 212 of the siphon drain pipe 210 can be indirectly fixed to the first fixture 30 simply by passing it through the through hole 14 a of the sleeve cover 14.

In the first fixture 30, like the first fixture 10, since the body 31 is an angle plate member, the body 31 can be easily formed by press-molding a single metal plate or the like. .. Further, in the first fixing tool 30, since the holding portion for sliding the main body 31 is omitted, the structure can be simplified as compared with the first fixing tool 10.

The above description only describes some embodiments of the present invention, and various modifications can be made according to the claims. For example, the horizontal pulling pipe 211 and the vertical pipe 212 of the siphon drain pipe 210 may be formed as a horizontal pulling pipe portion and a vertical pipe portion of the siphon drain pipe 210, respectively, either integrally or separately from the siphon drain pipe 210. it can. The various configurations adopted in the above-described embodiments can be used in combination with each other. Further, the various configurations adopted in the above-described respective embodiments can be appropriately replaced with each other.

10: 1st fixing tool, 11: Main body part, 11a: Front side wall, 11b: Upper surface wall, 11h1: Through hole, 11h2: Slide hole, 12: Saddle band, 13: Holding part, 13a: Front side wall, 13b: Upper surface Wall, 13b1: Overhanging portion of upper surface wall, 13c: Rear side wall, 13h2: Pin hole, 13h3: Mounting hole, 14: Sleeve cover, 14a: Through hole of sleeve cover, 15: Fastening element, 15a: Bolt, 15b: Nut , 16: Fastening element, 16a: Bolt, 16b: Nut, 17: Fastening element, 17a: Bolt, 17b: Nut, 20: Second fixing tool, 21: Body part, 21a: Peripheral side wall, 21e: Terminal side peripheral side wall. , 21h1: Through hole, 21h2: Fastening through hole, 30: First fixing tool, 31: Main body part, 31h1: Through hole, 100: Building structure, 101: Slab, 102: Floor material, 103: Joist, 104 : Structural wall, 200: Siphon drainage system, 210: Siphon water pipe (piping), 211: Horizontal pipe (horizontal pipe part), 212: Vertical pipe (vertical pipe part), 220: Vertical pipe, 230: Confluent joint , A4: upward opening, B: binding band

Claims (7)

Dropping the vertical pipe portion of the plurality of pipes from the slab, connecting the vertical pipe portions of the plurality of pipes to the joining joint provided in the stand pipe, a pipe laying method,
Vertical pipe portions of the plurality of pipes are dropped from the slab, a dropping step,
After the dropping step, the orientations of the vertical pipe portions of the plurality of pipes are changed so that the vertical pipe portions of the plurality of pipes are arranged side by side around the vertical pipe. To change the direction,
After the direction changing step, each of the vertical pipe portions of the plurality of pipes is connected to each of the plurality of upward openings formed in the confluent joint and arranged around the stand pipe. Process,
Including the pipe laying method. After the dropping step, the first pipe fixing step of further fixing the vertical pipe parts of the plurality of pipes to the vertical pipe using the first fixing tool in a state of being arranged side by side, The pipe laying method described in 1. The first fixture includes a main body in which a plurality of through holes for passing a binding band are arranged side by side and at intervals, and a saddle band for fixing the main body to the stand pipe. The pipe laying method according to claim 2. The pipe laying method according to claim 3, wherein the first fixture further includes a holding portion that holds the main body portion slidably in a lateral direction, and the saddle band is fixed to the holding portion. After the direction changing step, on the slab side of the merging joint, each of the vertical pipe portions of the plurality of pipes is attached to the vertical pipe using the second fixing tool while being arranged around the vertical pipe. The pipe laying method according to any one of claims 1 to 4, further comprising a second pipe fixing step of fixing. The pipe laying method according to claim 5, wherein the second fixture includes a main body portion in which a plurality of through holes for passing the binding band are arranged at intervals in the circumferential direction. The said 2nd fixing tool WHEREIN: The said main-body part is a polygonal shape by planar view, and each of the several through-hole which lets a binding band pass is provided in the several side wall of the said polygonal shape. The pipe laying method according to item 6.

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