JP2016125274A - Timbering device for lining pipe in sewer, and construction method for timbering - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce flowing water resistance inside a rehabilitation lining pipe in a sewer while constructing a timbering for the lining pipe, and improve work efficiency in the lining pipe.SOLUTION: A timbering device comprises a frame body that resits filling pressure of cement milk injected into a gap between a sewer and a lining pipe, and a support post. The frame body is annular in shape, comprises mainly of a rigid thin-walled plate, has a jack part at a crown, and is disposed along an inner surface of the lining pipe. The support post has rigidity to support a load in a vertical direction, comprises mainly of an extendable column part, has a top end engaged and fixed on a bracket of the jack part of the frame body, and has a bottom end seated and fixed at a bottom of the frame body. The frame body becomes perfectly round when the support post is extended after being assembled to the frame body, and regulates and prevents deformation of the lining pipe.SELECTED DRAWING: Figure 1

Description

  The present invention relates to the installation of a lining pipe installed as a lining layer on the inner surface of a pipe for rehabilitation of existing pipes such as a sewer pipe, a water pipe, and a gas pipe, and more particularly to the lining pipe. The present invention relates to a support apparatus that is inserted and installed to prevent deformation of the lining pipe, and a construction method using the support apparatus. More particularly, the present invention relates to a support apparatus that is inserted and installed in the lining pipe having a circular cross section and prevents deformation of the lining pipe, and a construction method thereof.

The present applicant has previously proposed Japanese Patent Application Laid-Open No. 10-121565 (hereinafter referred to as “Prior Invention 1”) and Japanese Patent Application Laid-Open No. 10-121656 (hereinafter referred to as “Prior Invention 2”).
That is, Prior Invention 1 relates to a support device for a circular lining pipe,
“A lining pipe having a circular cross section installed on the inner surface of an underground burial tube, which supports the filling pressure of cement milk inserted and installed in the lining pipe and injected into the gap between the underground burial tube and the lining pipe. A construction device,
The frame is formed in a polygonal shape by a corner member and a side member that slide with each other, and a receiving seat is attached to the outside of the side member, and the receiving seat of the frame is arranged on the inner surface of the lining pipe with a space therebetween. An abdominal erection member that abuts is stretched over. "
Further, in the above configuration, “a reaction force member is arranged on the upper side of the frame”.
Action:
In use, the frame is erected in the lining pipe at a predetermined interval, and the member is erected on the seat of the frame. The advancement / retraction of the seat of the frame is adjusted, and the abdomen is brought into contact with the inner surface of the lining pipe. The reaction member penetrates the lining pipe from the upper side of the frame and makes its tip abut on the top of the inner surface of the underground pipe.
In the injection of cement milk into the gap between the underground buried pipe and the lining pipe, the lining pipe is prevented from being deformed by the support apparatus. Further, the lining pipe is prevented from floating during the injection of the cement milk by the reaction force member.
effect:
According to the support device for the circular lining pipe, the deformation of the lining pipe due to the injection pressure of cement milk filling the outside of the circular lining pipe can be prevented. Benefits. Furthermore, the frame can be expanded in diameter, and can easily cope with changes in the diameter of the lining pipe.
In addition, the use of the reaction force member is effective for preventing the lining pipe from rising.
Prior invention 2 relates to a support device for a rectangular lining pipe.
“A lining pipe having a rectangular cross-section installed on the inner surface of an underground buried pipe, which is inserted into the lining pipe and is supported against the filling pressure of cement milk injected into the gap between the underground buried pipe and the lining pipe. A construction device,
A rectangular frame,
A seat mounted on the outside of the side of the frame;
An abdominal erection member that spans the seat of the frame that is erected at an interval and abuts against the inner surface of the lining pipe;
Reaction force members arranged on the upper side and both sides of the frame;
Consists of. "
Action:
In use, the frame is erected in the rectangular lining pipe at a predetermined interval, and the member is erected on the frame seat. The frame circumference or the advance / retreat of the seat is adjusted, and the abdomen is brought into contact with the inner surface of the lining pipe. The reaction member penetrates the lining pipe from the upper side part and both side parts of the frame and makes its tip abut against the inner wall surface of the underground pipe.
In the injection of cement milk into the gap between the underground buried pipe and the lining pipe, deformation of the lining pipe R is prevented by this supporting apparatus. Further, the lining pipe is prevented from floating during the injection of the cement milk by the reaction force member.
effect:
According to the lining pipe support apparatus, the deformation of the lining pipe due to the injection pressure of cement milk filling the outside of the lining pipe is prevented, and therefore the wall thickness of the lining pipe can be reduced, resulting in great economic benefits. Can be obtained. Furthermore, the frame can be expanded in diameter, and can easily cope with changes in the diameter of the lining pipe.
It is also effective for preventing the lining pipe from rising.

JP-A-10-121565 JP-A-10-121666

The present invention is a further development of the above-described prior invention. In the pipe lining construction, the resistance to flowing water in the lining pipe during construction work is reduced, and further, the workability in the lining pipe is improved. The purpose is to obtain a lining pipe support system.
It is another object of the present invention to obtain a method for constructing a support work using the support work apparatus.

In order to achieve the above object, a support device for a pipe lining pipe and a support construction method according to the present invention adopt the following configuration.
(First invention)
1st of this invention is related with the support apparatus of the lining pipe | tube in a pipe cage, As described in Claim 1,
In a lining pipe having a predetermined cross section installed on the inner surface of the underground buried pipe with a cement milk (filler) filling space, it is inserted and installed in the lining pipe, and between the underground buried pipe and the lining pipe A support device that opposes the filling pressure of cement milk injected into the gap,
It consists of the following frame body (i) and the following support | pillar (ii).
(I)
A frame body having a rigid, thin-walled plate body having a constant width, a jack portion at a top portion thereof, being arranged along an inner surface of the lining pipe and having a substantially annular shape.
The frame body includes a lower side plate disposed on a lower side of the lining pipe, and both upper side plates attached to both ends of the lower side plate via pivoting portions that are restricted from folding outward and can be folded inward. Consists of
The lower side plate is assembled integrally with a divided body,
The jack portion is formed by extending brackets facing each other with an interval between the upper end portions of the upper side plates, and spanning a screw rod for pushing and spreading between the brackets.
(Ii)
Mainly a rigid column that supports the load in the vertical direction, and has a receiving seat that is fixedly engaged with the bracket of the jack portion that is spread out on the frame body at the upper end, and at the lower bottom of the frame body at the lower end. A pillar that is seated in a fixed state, and that the column portion is extendable.
In the above configuration,
1) The pivoting portion has a pin tube fixed to the upper end surface of the lower side plate in the tube axis direction, and a pin tube fixed to the lower end surface of the upper side plate coaxially with the pin tube in the tube axis direction. The pin 杆 is inserted into the pin tube,
2) As one aspect of the above 1), a pin tube is fixed to the upper end surface of the lower side plate with an interval in the tube axis direction, and is fixed to the lower end surface of the upper side plate in the tube axis direction at the interval portion. Pin tubes are fitted, and pin 杆 is inserted through these pin tubes,
3) As still another aspect of the above 1), a pin tube is fixed to the lower end surface of the upper side plate with an interval in the tube axis direction, and is fixed to the upper end surface of the lower side plate in the tube axis direction at the interval portion. Pin pins are fitted, and pin 杆 is inserted through these pin tubes,
4) The pivoting part is subjected to restraint in which the outer frame is restricted when the frame body is a perfect circle,
5) As one aspect of the restraint of 4), the facing flanges of the upper end surface of the lower side plate and the lower end surface of the upper side plate are in contact with each other.
6) As another aspect of the restraint of 4), a protrusion is fixedly provided on one of the upper end surface of the lower side plate and the lower end surface of the upper side plate, or on each end surface, and the one protrusion is a counterpart. Abut against the end face or the other protrusion,
Is an optional matter that is adopted as appropriate.

(Function)
After completion of the installation construction of the lining tube in the installation sewer of shoring device, before being subjected to the back-filling material (cement milk) injection, installation work at the lining tube of the shoring device is performed.
The frame body of the support apparatus is divided and the struts in the contracted state are carried into the lining pipe, the frame body is assembled, the upper side plate is raised and the jack portion is pushed and operated, and the frame body is formed into an annular shape. Eggplant. Next, the column is extended, the seat at the upper end is engaged with the bracket of the jack portion, and the upper end and the lower end of the column are fixed to the frame body. As a result, the frame body maintains a perfect circle shape. The support device in this state is installed in the lining pipe at a predetermined interval.
At the same time, a reaction force member that takes a reaction force against the inner wall of the pipe wall and presses the lining pipe against the lower bottom of the pipe wall is installed between the supporting devices.
When the cement milk backfill material is filled between the working tube tub and the lining tube after the cement milk is injected , the filling pressure of the cement milk acts on the side of the lining tube under the flow (liquid) state of the cement milk. . The side pressure acting on the lining pipe deforms the lining pipe (compression in the width direction, increases in height), but the frame body maintains a perfect circle shape due to the restraining action of the pillars of the lining pipe. Deformation is prevented.
The buoyancy caused by the cement milk is prevented from rising of the lining pipe by the reaction member.
Inner space of the lining pipe The frame body of the support system is made of a thin plate-like ring body and is arranged along the inner wall of the lining pipe, and the struts that hold the frame body rigidly are slender and vertically support the lining pipe. Since it is arranged along the diameter, the occupied space is extremely small, giving a sufficient working space, and flowing resistance of flowing water flowing in the lining pipe under construction is small.

(Second invention)
2nd of this invention is related with the construction method of the support work of the lining pipe in a pipe cage, As described in Claim 4,
(I)
Rigid, thin-walled plate with a certain width as the main component, with a jack at the top, and arranged along the inner surface of the lining pipe that is installed on the inner surface of the underground buried pipe. A frame body having a substantially annular shape.
The frame body includes a lower side plate disposed on a lower side of the lining pipe, and both upper side plates attached to both ends of the lower side plate via pivoting portions that are restricted from folding outward and can be folded inward. Consists of
The lower side plate is assembled integrally with a divided body,
The jack portion is formed by extending brackets facing each other with an interval between the upper end portions of the upper side plates, and spanning a screw rod for pushing and spreading between the brackets.
(Ii)
Mainly a rigid column that supports the load in the vertical direction, and has a receiving seat that is fixedly engaged with the bracket of the jack portion that is spread out on the frame body at the upper end, and at the lower bottom of the frame body at the lower end. A pillar that is seated in a fixed state, and that the column portion is extendable.
A lining pipe support construction method using a lining pipe support device comprising the frame body (i) and the support column (ii),
Before the backfilling filler is filled into the gap between the underground buried pipe and the lining pipe, the support apparatus is installed in the lining pipe with an appropriate interval in the pipe axis direction of the lining pipe, and the frame Hold the body in a perfect circle shape by the restraint of the column,
A reaction force in which the lower end of the support device is directly or indirectly seated on the lower bottom of the lining pipe, penetrates the top of the lining pipe, and the upper end abuts on the inner wall of the pipe top. Install the member, give the downward pressing force to the lining pipe,
After that, it is filled with backfilling filler,
It is characterized by that.
In the above configuration,
1) The pivoting portion has a pin tube fixed to the upper end surface of the lower side plate in the tube axis direction, and a pin tube fixed to the lower end surface of the upper side plate coaxially with the pin tube in the tube axis direction. The pin 杆 is inserted into the pin tube,
2) As one aspect of the above 1), a pin tube is fixed to the upper end surface of the lower side plate with an interval in the tube axis direction, and is fixed to the lower end surface of the upper side plate in the tube axis direction at the interval portion. Pin tubes are fitted, and pin 杆 is inserted through these pin tubes,
3) As still another aspect of the above 1), a pin tube is fixed to the lower end surface of the upper side plate with an interval in the tube axis direction, and is fixed to the upper end surface of the lower side plate in the tube axis direction at the interval portion. Pin pins are fitted, and pin 杆 is inserted through these pin tubes,
4) The pivoting part is subjected to restraint in which the outer frame is restricted when the frame body is a perfect circle,
5) As one aspect of the restraint of 4), the facing flanges of the upper end surface of the lower side plate and the lower end surface of the upper side plate are in contact with each other.
6) As another aspect of the restraint of 4), a protrusion is fixedly provided on one of the upper end surface of the lower side plate and the lower end surface of the upper side plate, or on each end surface, and the one protrusion is a counterpart. Abut against the end face or the other protrusion,
Is an optional matter that is adopted as appropriate.

The present invention has the following effects.
1) The frame body of this support device is thin plate-like, and maintains an annular true circle integrally with the support, resists external forces acting on the lining pipe, and prevents harmful deformation of the lining pipe. it can.
2) The inside of the lining pipe where the support system is installed has a sufficient working space, and can efficiently carry out operations such as movement of workers, transportation (loading / unloading) and assembly of materials.
3) The occupying part in the lining pipe of this support construction device is small, and in the lining construction carried out under flowing water, the resistance of the flowing water flowing through the lining pipe is small, unexpected troubles are prevented, and safe work can be realized.
4) The frame body of the present support construction device is formed with a split body that is inscribed in the lining pipe, so that it can be easily carried in from the opening of the manhole, carried in the lining pipe, and assembled. . In particular, the inward folding of the upper side plate contributes to this carrying-in operation.

The front view which shows the whole of one Embodiment of the lining pipe support apparatus S of this invention (1-1 line sectional drawing of FIG. 2). The longitudinal cross-sectional view which shows the installation condition of this support construction apparatus S and reaction force member in a lining pipe | tube (2-2 sectional view taken on the line of FIG. 1). The detailed sectional view of the frame body part (joint part of the lower side plate) of the support device S. The detailed sectional view of the other portion (bottom part) of the frame body of the present supporting device S. (A) Detailed sectional drawing of the other part (pivoting part) of the frame body of this support construction apparatus S (5a-5a sectional view taken on the line 5b). (B) 5b line arrow figure of a figure. (A) The center longitudinal cross-sectional view of the further another part (jack part of an upper side version) of the frame body of this support construction apparatus S. FIG. (B) 6-6 line arrow figure of a figure. (A) The detailed side view of the part (upper support | pillar) of the support | pillar of this support construction apparatus S. FIG. (B) A view on arrow 7 in FIG. (A) The detailed side view of the other part (lower strut) of the support | pillar of this support construction apparatus S. FIG. (B) A view on arrow 8 in FIG. The detailed side surface partial sectional view of the other part (intermediate support | pillar) of the support | pillar of this support construction apparatus S. (A) The detailed top view (10a line arrow figure of b figure) of the other part (joint) of the support | pillar of this support construction apparatus S. FIG. (B) 10b line arrow view of a figure. FIG. 3 is an installation diagram of a reaction force member in a lining pipe (cross-sectional view taken along line 11-11 in FIG. 2). Sectional drawing which shows the construction point of the lining construction in an underground buried pipe. Sectional drawing which shows the other aspect of the pivot part of a frame body (similar figure to Fig.5 (a)).

DESCRIPTION OF EMBODIMENTS Embodiments of a support device for a pipe lining pipe and a support construction method according to the present invention will be described with reference to the drawings.
FIGS. 1-11 shows the lining pipe support apparatus and attachment means of one Embodiment. That is, FIG. 1 and FIG. 2 show the overall schematic configuration of the support device S, FIGS. 3 to 10 show the configuration of each part of the support device S, and FIG. 11 is used together with the support device S. Attached means (reaction force member).
In these drawings, P indicates a sewer pipe, and in the present embodiment, a concrete circular cross-section pipe structure is adopted. R indicates a lining pipe installed in the sewer pipe rod P. In the present embodiment, R is made of synthetic resin (usually made of vinyl chloride). In the present invention, the material of the lining pipe is not limited, but it is essential to show some elasticity.

  As shown in FIGS. 1 and 2, the support device S is arranged along the inner surface of the lining pipe R and has a substantially closed frame body 1, and an annular top portion of the closed frame body 1. And a support column 2 interposed in the lower bottom portion of the frame body 1. Furthermore, the reaction force member 3 is separately arranged in the lining construction in the pipe rod by the support apparatus S. These (frame body 1, support column 2, reaction force member 3) may be made of any material as long as they have a predetermined strength, but are usually made of metal (steel, aluminum, etc.), and synthetic resin is not excluded.

Hereinafter, the detailed structure of each member will be described.
Frame body 1 (see FIGS. 1 to 6)
The frame body 1 is formed of a rigid (thin) plate-like body having a certain width and a curvature, and is arranged along the inner surface of the lining pipe R so as to form a substantially closed annular body. Eggplant.
More specifically, the frame body 1 is attached to the lower side plate 5 disposed on the lower bottom portion of the lining pipe R, and to both upper ends of the lower side plate 5 so as to be able to be folded inward via a pivotal portion 6. The upper side plate 7 is arranged at the upper part of the lining pipe R, and the upper side plate 7 is divided into two parts (7A, 7B) via the jack part 8 at the middle part (that is, the ring top part), When the jack portion 8 is not operated, it is folded inward, and when the jack portion 8 is operated, the lower side plate 5, the pivoting portion 6, the upper side plate 7 and the jack portion 8 form a closed frame body 1.
Note that the rigidity of the frame body 1 is not a complete rigid body, and it is sufficient to develop a certain limit of strength required by the present invention (such as prevention of deformation due to cement milk filling pressure described later). The deformation is allowed for a large load.

Lower side plate 5 (see FIGS. 3 to 5)
The lower side plate 5 is formed of a thin plate-like body having rigidity, a constant width and a curvature, and a metal material such as an aluminum material or a steel material is selected as the material, but other materials (for example, a hard synthetic material) Resin) is not excluded. The curvature of the lower side plate 5 is formed in a shape (curvature) along the inner surface of the lining pipe R, and reaches a height (270 ° as a whole) reaching almost half of the upper part of the lining pipe R.
The lower side plate 5 is required to be thin, but various forms of a plate-like body and a skeleton can be adopted as long as a predetermined rigidity is maintained. In the present embodiment (see FIG. 3), a plate body form is shown in which a narrow stiffener (rib) is rigidly connected to the edge portion 11, the longitudinal direction 12, and the lateral direction 13 on the inner surface of the curved plate 10. In this case, the edge rib 11 becomes a flange. In addition, it does not exclude the frame form formed by combining not only the plate form but also L-shaped materials (steel, aluminum, etc.).

(segment)
Since the lower side plate 5 occupies most of the inner periphery of the lining pipe R, the lower side plate 5 is divided in consideration of carrying in from the opening of the human hole, transporting in the lining pipe R, and assembly.
That is, as one aspect thereof, as shown in FIG. 3 (the curvature of the drawing is emphasized), the lower side plate 5 is divided into segments in the axial direction of the torus at appropriate locations (the bottom side segment 5A, the side wall). A side segment 5B) is formed, and the flanges 11 stretched at the contact portions are brought into contact with each other, and are fastened with fasteners 15 (bolts and nuts) through bolt insertion holes formed in the flanges 11. Take.
(bottom)
As shown in FIG. 4 (the curvature of the drawing is emphasized), a pedestal 17 is fixed to the bottom of the inner surface of the lower side plate 5. The pedestal 17 has a bottom surface that matches the curvature of the inner surface of the lower side plate 5, and an upper surface that forms a horizontal plane, and a bracket member 17b that stands on the upper surface of the additional plate 17a with a predetermined interval. It consists of. Bolt insertion holes are formed in the bracket member 17b.
The pedestal 17 receives a lower column 31 of the column 2 to be described later, and supports and fixes the lower column 31 with fasteners (bolts and nuts) 43 inserted through the bolt insertion holes.

Pivot 6 (See Fig. 5)
As shown in FIG. 5 (the curvature of the drawing is emphasized), the pivoting portion 6 includes a pin tube 6a, a pin tube 6b, and a pin rod 6c, and is arranged in the pin tubes 6a and 6b arranged on the same axis. The pin 杆 6c is inserted into. A pin tube 6a is fixed to the upper end flange 11 of the lower side plate 5 with an interval in the tube axis direction, and a pin tube 6b fixed to the lower end flange 11 of the upper side plate 7 is fitted into the interval portion. A pin rod 6c is inserted through these pin tubes 6a and 6b.
More specifically, the outer side (radial direction) of each flange 11 of the lower and upper side plates 5 and 7 to which the pin tubes 6a and 6b are attached is a flat surface A, and the inner side of each flange 11 is an inclined surface B with an opening angle. It is said. As a result, when the pivoting portion 6 is closed, the flanges 11 of the lower and upper side plates 5 and 7 are brought into contact with each other on the flat surface A and the outer folding is restricted, and when the pivoting portion 6 is opened (the inner side of the upper side plate 7). Bending state) Stops at the position where the inclined surfaces B abut each other.
In this embodiment, the internal folding angle of the upper side plate 7 takes an opening angle of about 90 ° to 100 ° (or more) from the closed state of the pivoting portion 6 (tangent on the outer periphery, 0 °).

The pivot part 6 is not limited to this aspect, and can adopt the following aspects.
1) A single pin tube is fixed to the upper end surface of the lower side plate in the tube axis direction, and a single pin tube is fixed to the lower end surface of the upper side plate coaxially with the pin tube in the tube axis direction. A mode in which the pin tubes are arranged side by side and a pin rod is inserted through the pin tubes.
2) A mode in which the pin tubes 6 a and 6 b are attached to the inner end of the flange 11. In this embodiment, when the pivoting portion 6 is closed, the flanges 11 of the lower and upper side plates 5 and 7 are received over the entire surface of the flange 11, and when the pivoting portion 6 is opened, a stopper for determining the stop position of the lower and upper side plates 5 and 7 is separately provided. It is done.
3) FIG. 13 shows still another pivot 6A. The pivot part 6A has pin tubes 6a and 6b fixed at the center of the width of the surface of each flange 11 along the ring axis direction, and a projection 70 (on the lower side plate 5 side 70A on the end face of the curved plate 10). The upper side plate 7 side 70B) is projected. The projecting length of the protrusion 70 is the radial length of the pin tubes 6a and 6b, and both the protrusions 70A and 70B come into contact with each other at the end surface A, thereby functioning to bend outwardly. In this embodiment, the load is supported by the pivoting portion 6 and the protrusion 70, and when the pivoting portion 6 is opened, stoppers for determining the stop positions of the lower and upper side plates 5 and 7 are appropriately provided. In this embodiment, the protrusion 70 is fixed continuously (that is, as a single sheet) along the edge of the curved plate 10, or is fixed at intervals (that is, non-continuous). Can be taken.
4) As a modification of the pivoting portion 6A of 3) above,
4-1) Only one of the projecting bodies 70A and 70B is used, and the same length as the diameter of the pin tube 6a is taken. The projecting body 70 (70A or 70B) is used to regulate the outward folding and support the load.
Furthermore, the aspect which arrange | positions protrusion 70A, 70B alternately as the mixed type is also possible.
4-2) Protrusions 70A and 70B are arranged on the surface other than the end surface of the curved plate 10 (for example, on the outer flange 11 of the pin tubes 6a and 6b).

Upper side plate 7, jack portion 8 (see FIGS. 5 and 6)
The upper side plate 7 is attached to both ends of the lower side plate 5 via the pivoting portions 6, and is disposed on the lining pipe R. The upper side plate 7 is divided into two parts (7A, 7B) via a jack part 8 at the middle part (that is, the top of the ring), and is folded inward when the jack part 8 is not operated. The lower side plate 5, the pivoting portion 6, the upper side plate 7 and the jack portion 8 form a closed and annular frame body 1 by the operation of. One upper side plate 7 </ b> A is a side that performs the jacking action of the jack portion 8, and the other upper side plate 7 </ b> B is a side that receives the jacking action of the jack portion 8.

(Jack portion 8) (see FIG. 6)
As shown in FIG. 6 (the curvature of the drawing is emphasized), the jack portion 8 is a screw in which a bracket 20 is fixed to a facing portion of each of the upper side plates 7A and 7B, and the bracket 20 is advanced and retracted by a screw action. A collar 21 is interposed.
Specifically, a screw rod insertion hole 20a is opened at the center in the width direction of the bracket 20 (20A) on the upper side plate 7A side, and a nut member 22 is fixedly provided facing the screw rod insertion hole. Each bracket 20A, 20B is provided with two bolt insertion holes 20b. An annular screw rod receiver 23 is fixed to the bracket 20B facing the bracket 20A so as to be coaxial with the screw rod insertion hole 20a.
The screw rod 21 includes a screw portion 21a, a rotation portion 21b, and a tip portion 21c. The screw portion 21a is screwed into the screw hole of the nut member 22, and moves forward and backward with a rotation operation of the rotation portion 21b. As the screw rod 21 advances, the tip 21c comes into contact with the front surface of the bracket 20B in the screw rod receiver 23 and pushes the upper side plates 7A and 7B apart. Due to the reverse rotation of the screw rod 21, the screw rod 21 is retracted, the tip portion 21c is separated from the front surface of the bracket 20B, and the mutual tensile force of the upper side plates 7A and 7B is lost. The screw rod receiver 23 can be omitted as appropriate.

Prop 2 (See FIGS. 7 to 10)
The support column 2 is interposed between the upper end of the closed frame body 1 and the lower end of the frame body 1, and includes an upper support column 30, a lower support column 31, and an intermediate support column 32 interposed between these support columns 30 and 31. The main body further includes a joint 33 that connects the lower column 31 and the intermediate column 32 (see FIG. 1).
(Upper column 30) (See FIG. 7)
The upper column 30 has a columnar column 35 as a main body, and a receiving seat 36 made of a U-shaped member that is engaged with (attached to) the upper end of the frame body 1 is fixed to the upper end of the column 35, A screw rod 37 extends downward from the lower end of the column portion 35. One side plate of the receiving seat 36 is provided with a concave groove 36a for inserting the screw rod 21 of the jack portion 8, and both side plates are provided with fasteners (bolts and bolts) at positions corresponding to the bolt insertion holes 20b of the bracket 20. The bolt insertion hole 36b through which the nut 38 is inserted is opened.
(Lower column 31) (See Fig. 8)
The lower column 31 has a columnar column 40 as a main body, a flange 41 is stretched at the upper end of the column 40, and a circular fitting hole 41a is formed at the center of the flange 41. A seat plate 42 is fixed to the lower end of the portion 40. The bolt insertion holes 42a of the seat plate 42 and the bolt insertion holes of the bracket member 17b of the pedestal 17 at the bottom of the frame body 1 are made to coincide with each other, and a frame having fasteners (bolts and nuts) 43 attached to these bolt insertion holes. Fix the body 1.
(Intermediate strut 32) (see FIG. 9)
The intermediate strut 32 has a column portion 45 as a main body, and a screw ring 46 is fixed on the upper portion of the column portion 45, a screw 46 a is screwed on the inner surface of the screw ring 46, and a handle 47 is provided on a side portion of the screw ring 46. Is attached. Further, a flange 48 is stretched at the lower end of the column portion 45, and a cylindrical dowel 49 is projected from the lower surface of the flange 48. The screw rod 37 of the upper column 30 is screwed into the screw 46 a on the inner surface of the screw ring 46, and the dowel 49 is inserted into the fitting hole 41 a of the lower column 31 while allowing rotation.
(Fitting 33) (see FIG. 10)
The joint 33 is mainly composed of two semi-annular bodies 51 obtained by dividing the toric body into two, and a semi-annular shelf portion 51a is projected from above and below the inner surface of the semi-annular body 51 at a predetermined interval. Further, flanges 52 are stretched on both sides of the semi-annular body 51, and bolt insertion holes 52 a are formed in the flanges 52. The two half-annular bodies 51 are joined together, and the joint 33 is assembled with fasteners (bolts and nuts) inserted into the bolt insertion holes of the flanges 52. A space for holding the flange 41 of the lower column 31 and the flange 48 of the intermediate column 32 is formed in the assembled joint 33.

Assembly of the support column 2 The assembly of the support column 2 itself is as follows.
The intermediate strut 32 is screwed into the threaded rod 37 of the upper column 30 and the threaded engagement is made to the top of the threaded rod 37 as much as possible, so that these heights are made as short as possible.
In this state, the dowel 49 at the lower end of the intermediate column 32 is inserted into the insertion hole 41 a of the flange 48 at the upper end of the lower column 31. Thereby, the flange 46 of the intermediate column 32 and the flange 41 at the upper end of the lower column 31 are in contact with each other while maintaining the center, and the semi-annular body 51 of the joint 33 is fitted from the side portions of the combined flanges 48 and 41, The flanges 52 of the joint 33 are integrated with a fastener.
As a result, the upper support column 30, the intermediate support column 32, the lower support column 31 and the joint 33 are arranged on the same axis, and the intermediate support column 32 is only free to rotate with respect to the lower support column 31. Move up and down.

Reaction force member 3 (see FIG. 11)
The reaction force member 3 includes a column part 60 that moves up and down, and a pillow material 61 that is placed on the pedestal 17 of the plurality of frame bodies 1 on the inner bottom of the lining pipe R and supports the column part 60.
(Pillar 60)
The column portion 60 includes an upper circular tube column 63, a rotating tube 64 that is in contact with a lower end surface of the circular tube column 63, and a base 65 that is screwed into the rotating tube 64.
More specifically, the circular pipe column 63 is made of a rigid long circular pipe material, and the upper end of the circular pipe column 63 passes through an opening 67 formed in the top of the lining pipe R, and the upper end face abuts on the inner surface of the top of the lining pipe R. . The rotating tube 64 has the same diameter as the circular tube column 63, the upper surface thereof abuts on the lower end surface of the circular tube column 63, a screw is screwed on the inner surface, and a handle bar 64a is radially formed on the outer side. Attached to. The pedestal 65 includes a screw rod 65a screwed on the outer surface and screwed into a screw on the inner surface of the rotary tube 64, and a bottom plate 65b on which the screw rod 65a is rigidly implanted. The bottom plate 65b is installed across the side-by-side pillows 61.
The rotating pipe 64 moves up and down the screw rod 65a of the pedestal 65 by the rotation, and moves up and down the circular pipe column 63 abutting on the rotating pipe 64 while allowing the rotation.
(Pillow 61)
The pillows 61 are installed long in parallel (two) in the tube axis direction, straddling the bases 17 of the plurality of frame bodies 1 on the inner bottom of the lining pipe R, and the base 65 of the column part 60 is placed thereon. The pressing force of the column part 60 is transmitted to the lining pipe R through the frame body 1. In the present embodiment, the reaction force member 3 adopts a mode through the pillow material 61, but the pillow material 61 can be omitted and a mode in which the pedestal 65 of the column part 60 is directly placed on the inner bottom of the lining pipe R can be adopted. .

Lining construction in the pipe rod P Lining construction work in the pipe rod using the lining pipe support device S of the present embodiment will be described.
FIG. 12 shows an outline of the lining construction work. In this construction work, an application example to a sewer pipe P having a circular cross section as an underground buried pipe is shown. In the figure, Q1 is an upstream human hole, O1 is an opening thereof, Q2 is a downstream human hole, O2 is an opening thereof, and E is a ground in which a pipe rod P is embedded.

Hereinafter, it demonstrates based on a construction procedure.
(1) Install the lining pipe R in the existing sewer pipe P. Prior to this construction, the opening of the attachment pipe to the sewer pipe P is closed.

(2) The support system S is installed in the lining pipe R.
That is, first, the divided body of the frame body 1 (at least the lower part of the lower side plate 5 and the remainder thereof, the upper side plate 7 is folded inward and passes through the opening O of the human hole Q) and contraction. The support column 2 in the state is carried into the lining pipe R through the opening O of the human hole Q. The divided parts of the frame body 1 are fastened to each other, and the upper side plate 7 that is tilted inward via the pivotally attached part 6 is pulled up so that the brackets 20 are brought into relative contact with each other. The frame body 1 is assembled by moving it in. Thus, the frame body 1 is disposed along the inner surface of the lining pipe R.
The support column 2 is installed at a predetermined position inside the frame body 1. Initially, the upper column 30 is contracted downward in the column 2, the intermediate column 32 is rotated with the handle 45 to extend the upper column 30 upward, and the bracket that faces the seat 36 at the upper end of the upper column 30. 20 and the bracket 20 and the seat 36 are fastened. Accordingly, the frame body 1 maintains a perfect circle shape, and the lining pipe R is supported by the frame body 1 from the inner surface, and the deformation is corrected to maintain the perfect circle shape. The lower column 31 of the column 2 is also fastened to the base 17 at the bottom of the frame body 1.
Thereby, the frame body 1 is closely arranged on the inner surface of the lining pipe R.
Each frame body 1 and support column 2 are sequentially installed in the lining pipe R at a predetermined interval by the above procedure.

(2A) At the same time as the above process, the reaction force member 3 is carried in, and the reaction force member 3 is installed between the support devices S. That is, the pillow material 61 is installed across the pedestals 17 at the bottom of the plurality (usually 2 to 4) of the frame bodies 1, and the column portion 60 is installed on the pillow material 61. Then, a hole 67 for insertion of the circular pipe column 63 of the reaction force member 3 is drilled at the top of the lining pipe R at the installation position of each reaction force member 3.

(2B) The rotating pipe 64 is rotated to push the upper circular pipe column 63 upward, and further, the circular pipe column 63 is extended outward so that its tip end surface is the top of the inner surface of the sewer pipe P. Press on. The reaction force is transmitted to the frame body 1 through the pillar portion 60 and the pillow material 61 of the reaction force member 3, and as a result, the lining pipe R is pressed against the lower bottom in the pipe rod P. A stripping agent for cement milk is applied to the outer portion of the cylindrical column 63 in advance.
Due to this action, the lining pipe R receives buoyancy when the cement milk M is injected (described later), but the reaction force member 3 resists this buoyancy and the lining pipe R is always on the lower bottom in the pipe rod P. Pressed.

(3) A weathering V is applied to both ends of the lining pipe R to close the gap between the pipe rod P and the lining pipe R, and the cement is inserted into the gap between the sewer pipe rod P and the lining pipe R through the weathering V. Milk M is poured and filled under a predetermined pressure.
The lining pipe R receives buoyancy and lateral pressure by filling with the cement milk M, and deforms the lining pipe R (compression in the width direction and increases in height). However, the frame body 1 is restrained by the support 2 of the lining pipe R. Holds a perfect circle shape, and thereby the deformation of the lining pipe R is prevented.

(4) Wait for the cement milk M to be fixed or when the predetermined strength is developed, disassemble the support device S.
(4A)
First, the reaction force member 3 is disassembled. That is, the rotating tube 54 is rotated and lowered and pulled away from the circular tube column 53, removed together with the pedestal 55, the circular tube column 53 is further pulled down, and all of these and the pillow material 51 are removed.
(4B)
After that, in this support construction apparatus S, the fastening of the fasteners 37 and 43 between the support column 2 and the frame body 1 is released, the upper support column 30 of the support column 2 is pulled down, and the receiving seat 36 is removed from the bracket 20. To remove.
Next, in the frame body 1, the screw rod 21 is loosened to fold the upper side plate 7 (7 </ b> A, 7 </ b> B) inward, the fastener 15 at the divided portion of the lower side plate 5 is loosened, the frame body 1 is disassembled, and the frame body 1. Is carried out to the outside through the opening of the human hole Q.
Thereby, installation to the sewer pipe P of the lining pipe R is completed.

(Effect of embodiment)
Since the lining pipe support apparatus S of this embodiment is used as described above and the lining construction in the pipe tub is carried out, it has the following effects.
1) The frame body 1 of the present support device S is mainly composed of a thin plate having a predetermined width, is formed in an annular body inscribed in the lining pipe R, and is constituted by a divided body. , Loading in the lining pipe R, and assembly work are facilitated. In particular, the internal folding of the upper side plate 7 contributes to this carrying-in work.
2) Since the frame body 1 of the support device S is held by the support column 2, the frame body 1 that exhibits rigidity can hold the perfect circle shape well, and prevents deformation of the lining pipe R due to external force, The lining pipe R can be kept in a perfect circle throughout the lining construction, including the filling process of cement milk as a backfill material in the pipe tub.
3) Since the frame body 1 of the support device S is made of a thin plate having a predetermined width and the support column 2 is thin, a sufficient work space for the worker is ensured and the movement of the worker is not obstructed. (Including material loading and assembly) can be performed smoothly.
Furthermore, in the lining construction under running water, the running water resistance in the lining pipe R becomes as small as possible, and an unexpected accident can be prevented.

The present invention is not limited to the above-described embodiments, and various design changes can be made within the scope of the basic technical idea of the present invention. That is, the following aspects belong to the scope of rights of the present invention.
1) In this embodiment, the lower side plate 5 of the frame body 1 is divided into three segments (5A, 5B), but is further divided in consideration of the size of the opening of the human hole Q and the like. Does not exclude aspects. In this case, the segments are brought into contact with the flange 11.
2) The support column 2 is within the range of holding each function of fixing the receiving seat 36 of the upper support column 30, fixing the lower end of the lower support column 31, and further moving up and down while maintaining the rigidity of the column portion. Modification is possible.
As one aspect thereof, the intermediate support 32 is eliminated, and the screw rod 37 at the lower end of the upper support 30 is screwed into a screw formed on the upper inner surface of the lower support 31 to form a new joint 33 (according to this embodiment, see FIG. 10). ) Is arranged at an intermediate portion of the upper support column 30. The lower upper column 30 is provided with a turning handle. Due to the rotation of the upper column 30, only the rotation above the joint 33 is allowed, and the seat 36 of the upper column 30 moves up and down.

S ... Supporting equipment, P ... Underground (sewer) pipe, R ... Lining pipe, M ... Backfill material (cement milk)
DESCRIPTION OF SYMBOLS 1 ... Frame body, 2 ... Support | pillar, 3 ... Reaction force member, 5 ... Lower side plate, 6 ... Pivoting part, 6a, 6b ... Pin pipe, 6c ... Pin rod, 7 ... Upper side plate , 8... Jack section, 20... Bracket, 21... Threaded screw, 30... Upper strut, 31... Lower strut, 32 ... Intermediate strut, 33 ... Joint, 36. ...... Fastener

Claims (4)

A lining pipe having a predetermined cross-section, which is installed on the inner surface of the underground buried pipe with a backfill filler filling space, is inserted and installed in the lining pipe, and is inserted into the gap between the underground buried pipe and the lining pipe. A support device that counters the filling pressure of the backfilling material to be injected,
A lining pipe support apparatus comprising the following frame body (i) and the following support (ii).
(I)
A frame body having a rigid, thin-walled plate body having a constant width, a jack portion at a top portion thereof, being arranged along an inner surface of the lining pipe and having a substantially annular shape.
The frame body includes a lower side plate disposed on a lower side of the lining pipe, and both upper side plates attached to both ends of the lower side plate via pivoting portions that are restricted from folding outward and can be folded inward. Consists of
The lower side plate is assembled integrally with a divided body,
The jack portion is formed by extending brackets facing each other with an interval between the upper end portions of the upper side plates, and spanning a screw rod for pushing and spreading between the brackets.
(Ii)
Mainly a rigid column that supports the load in the vertical direction, and has a receiving seat that is fixedly engaged with the bracket of the jack portion that is spread out on the frame body at the upper end, and at the lower bottom of the frame body at the lower end. A pillar that is seated in a fixed state, and that the column portion is extendable.   In the pivot portion, a pin tube is fixed to the upper end surface of the lower side plate in the tube axis direction, and a pin tube is fixed to the lower end surface of the upper side plate coaxially with the pin tube in the tube axis direction. The lining pipe supporting apparatus according to claim 1, wherein a pin rod is inserted into the lining pipe.   The lining pipe support device according to claim 1, wherein the pivotally attached portion is subjected to restraint in which the frame body is perfectly circular and is prevented from being bent outward. (I)
It has rigidity and is mainly made of a thin plate with a certain width, has a jack at the top, and is placed in contact with the inner surface of the lining pipe that is installed on the inner surface of the underground buried pipe. A frame body having a substantially annular shape.
The frame body includes a lower side plate disposed on a lower side of the lining pipe, and both upper side plates attached to both ends of the lower side plate via pivoting portions that are restricted from folding outward and can be folded inward. Consists of
The lower side plate is assembled integrally with a divided body,
The jack portion is formed by extending brackets facing each other with an interval between the upper end portions of the upper side plates, and spanning a screw rod for pushing and spreading between the brackets.
(Ii)
Mainly a rigid column that supports the load in the vertical direction, and has a receiving seat that is fixedly engaged with the bracket of the jack portion that is spread out on the frame body at the upper end, and at the lower bottom of the frame body at the lower end. A pillar that is seated in a fixed state, and that the column portion is extendable.
A lining pipe support construction method using a lining pipe support device comprising the frame body (i) and the support column (ii),
Before the backfilling filler is filled into the gap between the underground buried pipe and the lining pipe, the support apparatus is installed in the lining pipe with an appropriate interval in the pipe axis direction of the lining pipe, and the frame Hold the body in a perfect circle shape by the restraint of the column,
A reaction force in which the lower end of the support device is directly or indirectly seated on the lower bottom of the lining pipe, penetrates the top of the lining pipe, and the upper end abuts on the inner wall of the pipe top. Install the member, give the downward pressing force to the lining pipe,
After that, it is filled with backfilling filler,
The lining pipe support construction method characterized by this.