JPS6034585A - Method of burying pipe - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for burying pipes for water supply and sewerage pipes, sewage channels, drainage channels, etc. underground.

Conventionally, circular pipes with both ends open, rectangular pipes, etc. have been used as buried pipes of this type.

It is placed in an excavated trench filled with a stabilizing liquid such as muddy water, and is then buried underground by solidifying the stabilizing liquid and backfilling with earth and sand.

By the way, the pipes are formed into a conduit by joining them together in the slot, but at that time, it is difficult to lay the conduit with precision because there is a step at the bottom of the inner peripheral surface of the pipe. The problem is that it can't be done.

This is because pipes are subject to dimensional errors during manufacturing.
Moreover, the reference plane for measuring the level within the slot cannot be set at the bottom of the inner circumferential surface of the tube, but must be set at the top of the outer circumferential surface of the tube.

In addition, since a worker must enter the inside of the pipe from the end to seal the joints inside the pipe, there is a drawback that the workability of sealing the joints is poor.

Therefore, it is an object of the present invention to increase the accuracy of conduit laying and improve the workability of sealing joints.

In the present invention, after arranging the lower piece of a tube consisting of an upper piece and a lower piece in a groove excavated while filling it with a stabilizing liquid, the lower piece is arranged to prevent the stabilizing liquid from flowing inside and outside the lower piece. The method is characterized in that all or part of the IJ opening of the piece is closed, then the stabilizing liquid outside the lower piece is solidified, and then the upper piece is connected to the lower piece.

According to the present invention, since the lower piece is open at its upper end as well as its both ends, the reference plane for the mutual level of the pipes can be taken at the bottom of the pipe, that is, at the bottom of the inner circumferential surface of the pipe, and the pipe line. The laying accuracy can be greatly improved, and the workability can be greatly improved because the joint can be tightened by entering the inside of the pipe from the upper end instead of from one of the ends.

In addition, the tube is composed of an upper piece and a lower piece having a hole at the bottom, and after solidifying the stabilizing liquid outside the lower piece and before connecting the lower piece and the upper piece to each other, i'I from the hole in the piece below it!
! By driving a ready-made pile toward the board or forming a cast-in-place concrete pile, and further injecting a filler into the hole to connect the lower piece and the shape (second invention), the pipe The supporting ground can be strengthened.

The features of the invention will become clearer from the following description of the illustrated embodiments.

The 'lll0 used in the pipe burying method according to the present invention consists of an upper piece 12 and a lower piece 14 of concrete acid, as shown in FIG. 1 in a mutually connected state.
It has an overall rectangular cross-sectional shape (Fig. 2).

As shown in FIG. 2, the upper piece 12 and the lower piece 14 are each formed into a plate shape and a mouth shape when viewed in cross section. The upper piece 12 placed on the open upper end of the lower piece 14 has a nut 15 screwed onto its upper end, a lower end that extends downward through the upper piece 12, and is embedded in both side walls 14a of the lower piece 14. It is fixed to the lower piece 14 via a bolt 18 that is screwed into the insert 16. Further, the upper piece 12 can be approximately twice as long as the lower piece 14 in the axial direction. However, the length of the upper piece 12 in the axial direction is not limited as described above, and any length can be selected. On the contact surfaces of the upper piece 12 and the lower piece 14, that is, on the back surface of the upper piece 12 and on the upper end surfaces of both side walls 14a of the lower piece 14, there are recesses 20 that extend in the axial direction of the tube 10 and can engage with each other. and a convex portion 22 are provided.

As shown in Figure iJ3, the lower piece 14 has both side walls 14
Each end of the pipe 10 has a joint fitting 24 made of channel steel embedded with a part thereof protruding in the axial direction of the pipe lO, and the pair of lower pieces 14 are connected by fitting the joint fittings 24 facing each other. be done. On the inner surface of both side walls 14a of the lower piece,
A joint groove 26 is provided that is formed when the pair of lower pieces 14 are connected to each other.

To explain the method of burying a pipe according to the present invention with reference to FIG. )
Next, a trench hole 30 is excavated by a backhoe or a clamshell excavator (-only a packet of Talamusiel is shown as an example) while being filled with a stabilizing liquid 28 such as mud.

When excavating the groove hole 30, the existing F stage piece 11
In order to prevent damage caused by the excavator and to prevent excavated soil from flowing into the existing lower piece 11, the pipe 10 has a relatively large wall thickness in the axial direction, and the joint fitting 24
It is preferable to suspend the locking box 32 having a side portion that can be engaged with the end portion of the existing lower piece 11 and engage the locking box 32 with the end portion of the existing lower piece 11. Furthermore, in order to reduce the consumption of the stabilizer 28 as much as possible and prevent its waste, it is desirable to arrange a partition gate 31 inside the existing lower piece 11.

Next, after removing the locking box 32, as shown in FIGS. 5 and 6, the newly installed lower piece 1 is removed.
4 is suspended by a lifting device (not shown) such as a crane via a hanging frame 34 fixed to the lower piece 11, and the lower piece 1 to be suspended is attached to the joint fitting 24 of the existing lower piece 11.
It is inserted into the slot 30 by engaging and lowering the joint fittings 24 of No. 4. The lower piece 14 inserted into the slot 30 is attached to the bottom surface of the tube, that is, the bottom wall 14b of the lower piece 14.
After measuring the height position with reference to the pipe bottom surface so that the inner surface of the pipes coincides with the pipe bottom surface of the existing lower piece 11, the pipes are placed parallel to each other on the ground surface prior to excavation to define the excavation area of the trench hole 30, for example. By supporting the suspension frame 34 with a cross member 38 passed over the guide wall 36 (see FIG. 7), the lower piece 14 is placed in the slot 30 and maintained at the above height position.

The lower piece 14 and the hanging frame 34 are constructed such that, for example, a hole (not shown) through which the bolt 18 can pass is provided in the hanging frame 34, and a hole (not shown) through which the bolt 18 can pass is provided in the insert 16 provided in the lower piece 14. and attach a nut 15 to the bolt.
They can be connected by screwing them together.

After placing one lower piece 14 in the slot 30 filled with stabilizing liquid 28, or repeating said drilling of the slot and said placement of the lower piece into said slot, or placing the lower piece on the tool. After drilling a slot long enough to accommodate the arrangement and arranging a plurality of lower pieces in the slot, the lower piece 14 is removed so that the stabilizing liquid 28 does not flow between the inside and outside of the lower piece 14. Close all or part of the opening. When the water level of the stabilizing liquid 28 is at the same position as or above the two wheels of the lower piece 14, the entire opening of the lower piece 14 located at the frontmost position, that is, the open upper end and the open end in the axial direction of the pipe IO. and, if below, the open end which is part of the opening.

However, even if the water level of the stabilizing liquid is below the upper end of the lower piece 14, this is not intended to prevent all of the openings from being closed.

In this example, since the water level of the stabilizing liquid is located above the lower piece 14, the locking box 32 is moved to the open end in the same manner as in the case of excavating the trench hole 30, as shown in FIGS. 6 and 7. The open end portion is closed by engaging with the lower piece 11, and the open upper end portions of the existing lower piece 11 and the lower piece 14 connected thereto are closed by the cover 40. By using the locking box, it is possible to prevent the stabilizing liquid 28 from entering into the joint fitting 24 provided on the lower piece 14 and solidifying when the stabilizing liquid 28 is assimilated, which will be described later.

The liquid 28 is solidified and the lower piece 14 is supported by the surrounding ground (FIG. 7). The stabilizing liquid 28 can be solidified by, for example, adding a solidifying material thereto and then stirring the stabilizing liquid 28. As a result, the lower piece 14 becomes in the same state as the existing lower piece 11.

After solidifying the stabilizing liquid 2B, the hanging frame 34 is removed and the stabilizing liquid in the lower pieces 11 and 14 between the rough partition gate 31 and the locking pons 32 is extracted. Furthermore, after drying the inner surface of the lower piece 11°14, the joint groove? 6 (see Fig. 3) is filled with a bituminous joint material and further covered with premix mortar to finish the surface between the inner surfaces of the lower piece. Since the upper end of the lower piece is open, it is possible to move in and out of the lower piece easily and smoothly, and the above-mentioned joint grading work within the lower piece can be performed easily, quickly and accurately. be able to.

Engineering/Tl section Song V 11/ To connect the upper i-piece 12 to the lower pieces 11 and 14 through the nut 15, as shown in FIG.
By providing a hole 42 or a plurality of holes 42 penetrating through the bottom wall of the bottom wall, a ready-made pile 44 is driven through the hole 42 into the ground below the lower piece or on-site, prior to connecting the upper piece and the lower piece. Cast concrete piles (not shown) can be formed.

Although it is desirable to drive the pile 44 so that the pile head is located below the hole 42, driving the pile 44 until it is located below the hole 42 is not prohibited. After driving the pile 44, the hole 42
A filler material, such as mortar or concrete, is injected into the inside, thereby connecting the lower piece 14 and the pile 44 via the mortar or concrete.

In order to increase the strength of the part where the mortar or concrete is cast, it is preferable that a plurality of reinforcing bars 46 protruding from the wall defining the hole 42 are embedded in the lower piece 14 in advance. According to this example, when driving the piles, the piles are bent upward as shown by the chain lines in Figure 8, and after driving the piles, they are placed horizontally so that they overlap each other in the mortar or concrete area. .

In this way, by driving or forming piles and connecting the core and the lower piece, it is possible to strengthen the support ground for the lower piece and therefore the pipe 10.

In this way, after forming a conduit over all sections by connecting the '[10], it is backfilled with earth and sand.

Note that in order to explain the present invention, a tube 10 having a rectangular cross section will be used.
However, the cross-sectional shape is not limited to this, and the cross-sectional shape may be other polygonal or circular shapes, and if the cross-sectional shape is rectangular, the upper piece may be replaced with a plate-shaped one.
The cross-sectional shape may be U-shaped. In addition to concrete, the material of the pipe may be plastic or metal, which has a strength equal to or higher than that of concrete.

According to the present invention, the pipe to be buried is composed of an upper piece and a lower piece, and after the lower piece is installed, the pipe is formed by connecting the -L piece to it, so that the lower pieces can be connected to each other. In determining these height positions, the inner surface of the bottom wall of the lower piece, that is, the tube bottom, can be used as a measurement reference.

This makes it possible to connect the pipes to each other without creating a step at the bottom of the pipes, thereby significantly increasing the accuracy of pipe construction.

In addition, since the joint grading work at the joint between the pipes can be carried out by entering the inside of the lower piece from the open upper end of the lower piece before connecting the upper piece, the efficiency of the work can be dramatically improved. can.

Furthermore, by driving or forming piles into the ground below through holes provided in the lower piece and structurally connecting the lower piece and the piles, the supporting ground for the pipe can be strengthened.

[Brief explanation of drawings]

FIG. 1 is a front view of a tube used for carrying out the present invention, and FIGS. 2 and 3 are lines 2-2 and 3-3 in FIG. 1, respectively.
4 is a partial longitudinal sectional view of the groove hole during excavation, FIG. 5 is a partial vertical sectional view of the groove hole when the lower piece is inserted into the stabilizing liquid, and FIG. A partial longitudinal sectional view of the slot when the lower piece is placed, Figure 7 is a cross-sectional view of the slot when the stabilizing liquid outside the lower piece is solidified, and Figure 8 is the lower piece in an example where a stake is driven under the lower piece. and a partial vertical cross-sectional view of the pile. 10: Pipe, 11, 14: Lower piece, 12: Upper piece, 24: Joint fitting, 28 Bistable liquid, 30: Slot hole. Agent Patent Attorney Nobu Matsunaga Enclosed copy (no changes to the content) Figure 1 0 Figure 2 Figure 3 4 Figure 4 Figure 6 Figure 8 Procedures Amendment Document August 26, 1982 Patent Office Director Kazuo Wakasugi 1, Indication of the case Patent Application No. 140537 of 1982, 2 Title of the invention Method of burial 3, Person making the amendment Relationship with the case Applicant address Kuchiki Hashimoto, Chuo-ku, Tokyo Ishimachi-chome 4 Name Name Kuchiki Press Concrete Co., Ltd. Representative Toshihiko Ariga (1 other person) 4. Agent Showa month, day (self'fji~, p. 6, subject of amendment (1) drawings) Figures 1 to 8 (2) Power of attorney 7. Details of amendments (1) Supplement the black drawings. (2) Supplement the power of attorney. 8. List of attached documents (1) Black drawings (first Figures to Figures 8) 1 copy (2) Letter of attorney 2 copies

Claims (2)

[Claims] (1) Placing the lower piece of the pipe consisting of an upper piece and a lower piece in a groove excavated while filling it with a stabilizing liquid; A method for embedding a pipe, comprising closing all or part of the opening 11 of the piece, solidifying the stabilizing liquid outside the lower piece, and then connecting the upper piece to the lower piece. (2) Placing the lower piece of a pipe consisting of an upper piece and a lower piece having a hole at the bottom in a groove that has been excavated while filling it with a stabilizing liquid, and preventing the flow of the stabilizing liquid inside and outside of the lower piece. to close all or part of the opening of the lower piece, to solidify the stabilizing liquid outside the lower piece, and to drive ready-made piles from the holes in the lower piece into the ground below or on-site. A method for burying a pipe, comprising forming a cast concrete pile, injecting a filler into the hole to connect the lower piece and the shape, and then connecting the upper piece to the lower piece. .