JP2534138B2 - Piping trench and its construction method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to various piping materials such as gas pipes and water supply (hot water supply) pipes,
Further, the present invention relates to a piping trench for laying a wiring material and the like in the ground and a construction method thereof.

[Prior Art] Conventionally, in various factories, a piping trench having a structure as shown in FIG. 5 has been used in order to collectively lay the piping material as described above.

That is, a pipe support member 3 such as an L-shaped metal fitting is fixed using a hole-in anchor 2 inside a trench 1 having a structure (body) made of reinforced concrete.
This is a structure in which a pipe member 5 such as a gas pipe or a water supply pipe is attached by using the attachment 4.

According to the piping trench, a large number of piping materials 5 can be collectively laid in the soil, so that the piping trench is often used in factories and the like that require a large number of piping. However, according to the study by the inventor of the present application, it has been found that the following problems occur.

[Problems to be Solved by the Invention] The first problem is related to the construction of the trench 1. That is, in the case of constructing the trench 1, the construction position is excavated, the formwork and the reinforcing bar are assembled in the soil, concrete is poured and solidified, and then the formwork is disassembled and backfilled. For this reason, the construction period required for construction is long, and the number of working steps is large, resulting in high manufacturing cost.

The second relates to fixing the pipe support member 3. That is, although an L-shaped metal fitting or the like is used as the pipe support member 3, a concrete anchor is used when fixing both ends to the inner surface of the trench 1. The concrete anchor is one in which a hole is drilled in the trench 1 to drive the anchor and the anchor is used for screwing, and the above-described steps are required before the pipe supporting member 3 is screwed and fixed. For this reason, not only the number of working steps is large and the cost is increased, but also the strength of the trench 1 is lowered due to drilling, cracks may occur at the time of anchoring, and the trench 1 may be damaged.

Further, there are various problems such that the supporting member 3 is large in a square shape, various types are required, and the size of the trench 1 needs to be increased in consideration of maintenance.

The present invention has been made in view of the above problems,
It is an object of the present invention to provide a piping trench having a simple structure and capable of significantly shortening the steps required for construction, and a method for constructing the piping trench.

[Means for Solving the Problems] The object of the present invention is to provide a fume tube having, for example, a circular cross section, and a screw having a diameter smaller than the diameter of the inner surface of the fume tube and screwing bolts at desired intervals. An annular pipe support member to which a nut or the like is fixed, and an attachment member such as a bolt that has one end screwed into the nut and the other end abuts the inner surface of the fume pipe to tension the annular pipe support member. Achieved by the piping trenches used.

Further, another object of the present invention is achieved by a construction method in which a position where a piping trench is constructed is excavated to bury a fume pipe which becomes a trench, and then backfilled.

[Operation] According to the pipe trench having the above-described structure, the one end of each of the plurality of bolts screwed to the pipe support member is brought into contact with the inside of the fume pipe, whereby the annular pipe support member is stretched at a desired interval, that is, The fume pipe is fixed by point support from the inner surface of the fume pipe at a desired interval, and a pipe material such as a gas pipe can be fixed to the pipe support member. Therefore,
The anchor as a constituent member and the work of driving the anchor are not required at all, and it is possible to improve work efficiency and prevent damage to the fume tube.

Furthermore, according to the above-mentioned construction method, since the fume pipe is buried in the excavated soil, the work such as the incorporation of the formwork and the rebar and the placing of the concrete is not necessary at all, and the working efficiency is greatly improved. be able to.

[Embodiment] An embodiment of a piping trench to which the present invention is applied and a construction method thereof will be described below with reference to the drawings. Incidentally, FIG. 1 is a sectional view showing the entire structure of the piping trench, and FIGS. 2 and 3 are sectional views of the main part.

Reference numeral 11 denotes a fume tube that serves as a frame, and the diameter thereof is determined according to the number and size of the piping materials to be laid, but a ready-made fume tube may be used. Inside the fume pipe 11, an annular pipe support member 12 is fixed by a plurality of bolts 13 so as to have a desired distance L, and various pipe materials 14 such as a gas pipe and a water supply pipe are attached to the annular pipe support member 12. Mounting tool
It is fixed by 15.

The annular pipe support member 12 is composed of a flange portion 12a and a cylindrical portion 12b as shown in FIG. 2 and FIG.
It is designed to increase mechanical strength. Then, the nuts 12c are fixed to the inner surface of the cylindrical portion 12b at desired intervals,
The tip of the bolt 13 screwed to each nut 12c is the fume tube 11
Abuts the inner surface of the.

Therefore, by giving up the bolts 13 in sequence, the annular pipe support member 12 is biased toward the center of the fume pipe 11. Moreover, since the diameter of the annular pipe support member 12 is set smaller than the diameter of the inner surface of the fume pipe 11,
In the present embodiment, the annular pipe support member 12 is fixed by point contact with the interval L by the six bolts 13, so that the pipe support member 12 is stretched like a cobweb. The cylindrical portion 12b of the annular pipe support member 12 attached in this manner
For, the pipe material 14 is attached using the attachment 15.

As described above, the piping trench shown in the present embodiment has no possibility of damaging the fume tube 11 serving as the trench, and the piping material is formed by using one annular piping support member 12.
The internal structure is extremely simple, such as 14 can be installed.

 Next, the construction method will be described with reference to FIG.

When constructing the piping trench having the above-mentioned structure, the earth and sand at the construction position P are excavated, and then the fume pipe 11 is brought by, for example, a crane and buried in the groove portion formed by excavation, in other words, the construction position. Then, after the fume pipe 11 is positioned, the excavated earth and sand is backfilled.

Although the piping trench is constructed by such a process, the fume pipe 11 at the stage of burying may be before the annular pipe support member 12 is stretched, but if the work efficiency is taken into consideration, it will be stretched. It is convenient to use the existing one.

What should be noted in the above-mentioned construction method is that not only the incorporation of the formwork and the reinforcing bar and the placing of the concrete become unnecessary, but also the positioning can be extremely easily performed when connecting the plurality of fume pipes 11. . That is, the plurality of fume tubes 11 at the stage where the annular fixture 12 is affirmed have exactly the same vertical and horizontal structures. Therefore, assuming that a plurality of fume pipes 11 are buried in a connected state, the plurality of fume pipes 11
Should be positioned so that their center lines are aligned with each other, and both may be fixed so as to prevent positional deviation.

Then, after the plurality of fume pipes 11 are connected, the pipe material 14 is attached so as to bridge over the annular pipe support member 12 provided on the plurality of fume pipes 11 to complete the pipe trench.

Therefore, the pipe trench construction method shown in the present embodiment can reduce the construction material and the work man-hour, and in combination with them, the cost can be significantly reduced.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above, and various modifications can be made.

For example, the number, size, and installation interval of the piping materials 14 are not limited to the above, and can be arbitrarily selected.

Also, when laying wiring materials, etc., an annular pipe support member
12 may be used to provide shelves, suspensions, etc.

Further, in the above embodiment, the nut 12c for screwing the bolt 13 is fixed to the cylindrical portion 12b, but when the cylindrical portion 12b is thick, a screw groove may be directly formed and the nut 12c may be omitted.
Moreover, you may make it what is called a double nut structure.

Regarding the construction method, a protrusion or the like for preventing rolling of the fume tube 11 may be arranged on the outer surface of the fume tube 11, or the protrusion or the like may be integrally formed on the outer surface.

The cross-sectional shape of the fume tube 11 is not limited to the circular shape, and various shapes such as an ellipse and a square shape can be used.

[Effects of the Invention] As described above, the pipe trench according to the present invention is
An annular pipe support member having a smaller diameter than the inner surface of the fume pipe is stretched inside the fume pipe without using an anchor, and a pipe material is attached and fixed to the annular pipe support member. Therefore, according to the piping trench having the above-described configuration, the piping support member and the piping material are attached without damaging the fume tube, and the fume tube is prevented from being damaged, the material is reduced, and the work efficiency is improved. be able to.

In addition, when constructing the piping trench, the construction position is excavated, the fume pipe is buried, and the earth and sand are backfilled, so it is possible to reduce the material and the construction man-hours, greatly reduce the cost and construction period. It can be shortened.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a cross-sectional view showing the structure of a pipe trench, and FIG. 2 is a main part showing the extension of a pipe support member. FIG. 3 is an enlarged view, FIG. 3 is an enlarged cross-sectional view of an essential part showing the extension of the pipe support member, FIG. 4 is an explanatory diagram showing a method for constructing a pipe trench, and FIG. 5 is a diagram showing a conventional configuration. Reference numeral 11 in the figure: Hume pipe 12: Annular pipe support member 12a: Flange portion 12b: Cylindrical portion 13: Bolt 14: Piping material 15; Fixture P: Construction position.

Claims (2)

(57) [Claims] 1. A fume tube serving as a frame, a pipe support member stretched so as to have a desired gap with respect to an inner surface of the fume pipe, and the pipe support member stretched inside the fume pipe with a desired gap. And a pipe trench formed by a mounting member. 2. A piping trench is constituted by a fume tube which serves as a frame and a piping support member which is stretched by an attachment member so as to have a desired distance from the inner side surface of the fume tube. A method for constructing a piping trench, characterized by excavating the construction position, burying the fume pipe that will be the frame body, and then backfilling.