JPH09310788A - Profile for existing pipe lining - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To easily handle a reinforcing member that holds a profile having a cross-sectional shape similar to that of an existing pipe in that shape. A strip-shaped substrate (11) made of a flexible synthetic resin is adjacent to each side edge portion when spirally wound along an inner peripheral surface of a box culvert. The two are brought into the engaged state. On the substrate 11, when curved so as to face each corner of the box culvert,
The belt-shaped reinforcing member 12 is held so as to maintain the curved state.
Is inserted from the front surface side of the substrate 11 which is the inner peripheral surface side when spirally wound. The reinforcing member 12 is the substrate 11
It is easily curved in a direction orthogonal to the curved direction, and before being mounted on the substrate 11, it is curved in that direction and wound into a coil.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a profile used in a lining method used for rehabilitating an aged existing pipe, and in particular, it has a cross section different from a circular shape such as a quadrangle or an egg shape. The present invention relates to an existing pipe lining profile that is preferably used for rehabilitating an existing pipe having a modified cross section.

[0002]

2. Description of the Related Art When existing pipes such as sewer pipes deteriorate, strip-shaped profiles (substrates) made of synthetic resin
The method of lining the existing pipes is now being implemented. In this lining method, for example, as disclosed in Japanese Patent Laid-Open No. 5-169539,
A spiral pipe is inserted into the existing pipe while the flexible pipe-shaped profile is spirally wound into a spiral pipe by a pipe making machine installed in the manhole. It is designed to be propelled while rotating in the existing pipe.

In such a lining construction method, a strip-shaped reinforcing member is provided on the outer peripheral surface side of the profile so that the spiral tube holds a predetermined small diameter when a small diameter spiral tube is manufactured by the profile. Fair 7-802
No. 38 discloses this. The spiral tube formed by such a profile is held at a predetermined small diameter by a reinforcing member made of a metal plate or the like that can be plastically deformed.

Further, in JP-A-3-282095, when the inner peripheral surface of an existing pipe having a circular cross section is lined with a strip-shaped profile, side edges of the spirally wound profile are disclosed. A configuration is disclosed in which the members are joined together from the inner peripheral surface side by a joining member.

[0005]

Recently, there has been proposed a method of lining an existing pipe having a quadrangular cross section, such as a box culvert, with a strip plate profile. In the case of an existing pipe with a quadrangular cross section such as a box culvert, the profile that lines the inner surface of the existing pipe is not bent along each corner of the existing pipe, but a circle facing each corner. Curved in an arc. Since the profile is usually configured to be elastically deformable by a synthetic resin, when the rigidity is high, the curved portion of the profile facing each corner portion is formed so that the curved portion of the profile is aligned with each corner portion. It is not easy to make the radius of curvature as small as possible. When the radius of curvature of the profile is reduced, a large stress is generated in the curved portion of the profile, and it is not easy to maintain the curved state.

In order to prevent such deformation of the profile, for example, as disclosed in Japanese Patent Publication No. 7-80238 mentioned above, a belt-like shape which can maintain the proper curved state is obtained. It is conceivable to attach the reinforcing member of 1) along the longitudinal direction of the profile. However, such a strip-shaped reinforcing member may be plastically deformed when it is bent to a smaller radius of curvature in the same curved state as the profile. Therefore, there is a problem in that it is necessary to keep it in a state in which it is not plastically deformed until it is attached to the profile, and its handling is not easy. In addition, a reinforcing rib or the like is usually provided on the outer peripheral side of the profile, and the outer peripheral side of the profile is in close contact with the inner peripheral surface of the existing pipe, resulting in a complicated shape. There is also a problem in that it is not easy to continuously attach the reinforcing member to the outer peripheral side and further closely attach the attached reinforcing member to the inner peripheral surface of the existing pipe together with the profile.

The present invention solves such a problem, and an object thereof is to make it possible to make a predetermined curved state at each corner even for an existing pipe having a rectangular cross section or the like. The purpose of the present invention is to provide an existing pipe lining profile that is easy to work in spiral winding.

[0008]

An existing pipe lining profile of the present invention is an existing pipe lining profile for lining an inner peripheral surface of an existing pipe in a state of being spirally wound into a spiral pipe. A substrate having a strip plate shape made of a flexible synthetic resin and having adjacent side edges joined to each other when spirally wound. On the other hand, it has a strip shape that is mounted along the longitudinal direction, and is provided with a reinforcing member that is curved along the longitudinal direction together with the substrate so that the curved state can be maintained. It is characterized in that it is mounted from one surface of the substrate, which becomes an inner peripheral surface when spirally wound.

In the existing pipe lining profile according to the second aspect, the strip-shaped reinforcing member is mounted so as to be in a vertical state with respect to the substrate.

In the existing pipe lining profile according to the third aspect, the reinforcing member is mounted on the substrate after the substrate is spirally wound.

In the existing pipe lining profile according to a fourth aspect of the present invention, the reinforcing member is intermittently attached only to a portion having a small radius of curvature in the spirally wound substrate.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing an example of an existing pipe lining profile of the present invention. The profile 10 includes a strip-shaped substrate 11 integrally formed of a flexible synthetic resin, and a substrate 11 that holds the curved state when the substrate 11 is in a predetermined curved state. The belt-shaped reinforcing member 12 is mounted along the longitudinal direction of the belt 11.

The substrate 11 has a strip-shaped substrate body 11a having a thickness of about 2 to 4 mm. The board body portion 11a is provided at one side edge portion in the width direction of the board body portion 11a.
The stepped-down portion 11b is provided on the outer side by the thickness of a. Step drop portion 1 which is a side edge portion of the substrate body portion 11a
An oblique locking rib 11d, which obliquely extends to the front surface side of the substrate body 11a, is continuously provided in the longitudinal direction at the side edge of the substrate 1b.

In the middle of the stepped-down portion 11b, a semi-annular socket 11c protruding in the same direction as the protruding direction of the diagonal locking rib 11d is provided continuously along the longitudinal direction of the substrate body 11a. ing. The socket 11c is in a state of being opened on the side opposite to the step-down side of the step-down portion 11b (the back surface side of the substrate body 11a). Inside the socket 11c, the opening side portion is narrow, and the inner back side is expanded in an arc shape. On the outer peripheral surface of the semi-annular socket 11c, a reinforcing portion 11f that is parallel to the substrate main body portion 11a is provided.

The substrate 11 is spirally wound so that the outer peripheral side is the surface side on which the socket 11c, the diagonal locking ribs 11d, etc. are provided.

Oblique locking rib 1 on the substrate body 11a
In the vicinity of the side edge located on the side opposite to the side edge on which 1d is provided, the fitting protrusion 11 that is vertically raised in the same direction as the projecting direction of the socket 11c with respect to the substrate body 11a.
e is continuously provided along the longitudinal direction of the substrate body 11a. The fitting protrusion 11e is used for the board main body 11
A fitting portion having a circular cross section is provided at the tip of the column portion that rises vertically from the surface of a, and the fitting portion has a cross section that matches the hollow cross section of the socket 11c provided in the step drop portion 11b. It has a circular shape.

Reinforcing ribs 11h are provided on the outer peripheral surface of the substrate body 11a so as to be adjacent to the fitting ridges 11e at appropriate intervals so as to project in the same direction as the fitting ridges 11e. ing. As shown by the chain double-dashed line in FIG. 1, when the board 11 is spirally wound and the fitting projection 11e is fitted into the socket 11c, the reinforcing rib 11h is slanted with the rib 11d. Fitting ridge 1 so that the tip of the
It projects to the 1e side. In addition, between the reinforcing rib 11h and the fitting projection 11e, the fitting projection 11 is provided in the socket 11c.
A strip-plate-shaped sealing member 11m, which is pressed against the step-down portion 11b when the e is fitted and seals the two in a water-tight state, is provided on the surface of the substrate body 11a along the longitudinal direction. Has been.

Further, on the outer peripheral surface of the substrate body 11a, a reinforcing rib 11k adjacent to the socket 11c with a proper space is provided so as to project in the same direction as the socket 11c. .

The substrate body 11a includes a pair of reinforcing ribs 11.
Between h and 11k, each reinforcing rib 11h and 11k
The concave groove 1 for inserting the reinforcing member is bent so as to project to the side.
1 g is formed. This reinforcing member insertion groove 11g
Has a rectangular cross-section that is elongated and protrudes toward the back surface of the substrate body 11a, and has retaining recesses 11n provided on the inner wall surfaces facing each other. Each retaining recess 11
n has a triangular cross section in which a locking step is formed on the opening side of the reinforcing member insertion groove 11g.

The board 11 having such a structure has a board body 11a, a stepped portion 11b, a socket 11c, an oblique locking rib 11d, a fitting projection 11e, and reinforcing ribs 11h and 1h.
1 k and the like are integrally formed of a flexible synthetic resin such as polyethylene, polypropylene or vinyl chloride.

A strip-shaped reinforcing member 12 is provided in the reinforcing member insertion groove 11g between the pair of reinforcing ribs 11h and 11k provided in the central portion of the substrate body 11a in the width direction.
Is to be inserted. FIG. 2 is a perspective view of the reinforcing member 12. The reinforcing member 12 is made of a metal plate such as a steel plate, stainless steel, or aluminum in the shape of a band plate, and is inserted into the reinforcing member inserting groove 11g such that the depth direction thereof is the width direction. The reinforcing member 12 is
A retaining projection 12a having a sectional shape similar to that of the reinforcing member inserting concave groove 11g and having a triangular sectional shape similar to the retaining recess 11n provided in the reinforcing member inserting concave groove 11g, They are provided on the opposite surfaces, respectively.

Such a strip-shaped reinforcing member 12 is inserted in the reinforcing member inserting groove 11g of the substrate body 11a until it is inserted into the reinforcing member inserting groove 11g, as shown in FIG. Is wound in a coil shape along with, and the thickness direction is along the radial direction of the coil.

The profile 10 is spirally wound so as to line the inner surface of the box culvert 20. In this case, when the substrate 10 is wound in a spiral shape to be inserted into the box culvert 20, the reinforcing member 12 wound in a coil shape is sequentially inserted into the reinforcing member insertion concave groove 11g of the substrate 10. Inserted in. When the reinforcing member 12 is inserted into the reinforcing member insertion concave groove 11g, the retaining protrusions 12a of the reinforcing member 12 are locked in the retaining recesses 11n.

As shown by the chain double-dashed line in FIG. 1, the board 10 spirally wound has the fitting projection 11e fitted in the socket 11c provided in the stepped portion 11b, and The tip of the diagonal locking rib 11d is engaged with the tip of the reinforcing rib 11h. The fitting protrusion 11e fitted in the socket 11c is locked to the socket 11c so as not to come off. Thereby, the profile 10 is formed in a spiral tube shape.

FIG. 3 is a schematic vertical cross-sectional view of a box culvert showing an example of an implementation state of a lining construction method for an existing pipe which is implemented using such a profile 10.
The box culvert 20 has a square cross section and is provided between a pair of manholes. Then, by the strip-shaped profile 10, the box culvert 2
The inner peripheral surface of 0 is lined.

The profile 10 is spirally wound by the pipe making machine 40 arranged in the box culvert 20. The pipe making machine 40 has a frame 41 having a square cross-section similar to the cross-sectional shape of the box culvert 20 and arranged concentrically inside the box culvert 20. The frame 41 is in the shape of a groove that is open to the outer peripheral side, and a plurality of guide rollers 42 that are rotatably arranged at equal intervals are rotatably supported in the groove. . Adjacent guide rollers 42 are connected to each other by a connecting rod 43.

One of the guide rollers 42 that move around is provided with a drive roller 44 on the outer peripheral side of the guide roller 42 so as to face each other with an appropriate gap. The drive roller 44 is rotated by a hydraulic motor (not shown) so that it can be orbitally moved integrally with the guide roller 42 disposed opposite to the drive roller 44. Further, at a position symmetrical with respect to the drive roller 44, the drive roller 44 is provided on the outer peripheral side of the one guide roller 42 so as to be opposed to the guide roller 42 with an appropriate gap. This drive roller 44 also
It is adapted to be rotated by a hydraulic motor (not shown), and it orbits integrally with the guide rollers 42 arranged facing each other.

Between the one driving roller 44 and the guide roller 42 facing the driving roller 44, the substrate 11 of the profile 10 described above has the reinforcing member 12 inserted in the reinforcing member inserting concave groove 11g. It is supplied in the installed state. Supplied profile 10
Is in a state of being wound around the outer peripheral side portion of each guide roller 42, and the profile 10 wound around each guide roller 42 for one round, and the drive roller 44 and the guide roller 42 newly arranged to face each other. The profile 10 supplied between and is positioned in a spiral state, and the socket 11c and the fitting protrusion 11e at the adjacent side edge portions are brought into an engaged state.

The lining method of the present invention using the pipe making machine 40 having such a structure is carried out as follows.

First, the pipe making machine 40 is arranged in the manhole into which the profile 10 is introduced. Then, the substrate drum around which the substrate 11 of the profile 10 is wound is arranged on the ground surface near the opening of the manhole, and the substrate 11 is introduced into the manhole. The substrate drum is configured to be rotatable about a vertical axis.

The substrate 11 introduced into the manhole is inserted between the drive rollers 44 and the guide rollers 42 of the pipe making machine 40 which face each other. In this case, the reinforcing member 12 pulled out from the coiled state.
Is inserted into the reinforcing member concave groove 11g of the substrate 11,
The substrate 11 together with the reinforcing member 12 is inserted between the drive roller 44 and the guide roller 42. Then, the substrate 11 together with the reinforcing member 12 is spirally wound along the outer side of each guide roller 42 for about 2 to 3 turns,
Inside the socket 11c of the step-down portion 11b provided on one side edge of the substrate 11 adjacent in the axial direction, the other substrate 11
The fitting protrusions 11e provided on the side edge portions are fitted, and the tip ends of the oblique locking ribs 11d are locked to the tip parts of the adjacent reinforcing ribs 11h. In this way, the profile 10 is spirally wound around about 2 to 3 turns to form a spiral tube.

In such a state, the pipe making machine 40
It is installed in the box culvert 20 and fixed to the end of the box culvert 20. As a result, the tubularly shaped profile 10 is also included in the box culvert 20.
It is in a fixed state that does not rotate inside.

Thereafter, each drive roller 44 is rotated by a hydraulic motor. Each drive roller 44 spirally rolls on the inner peripheral surface of the tubular profile 10 fixed to the box culvert 20 to move circularly, and each guide roller is arranged to face each drive roller 44. 42 also spirally rolls on the outer peripheral surface of the profile 10 and moves circularly. At the same time, the other guide roller 42 also revolves along the rectangular frame 41. Then, when the drive rollers 44 and the guide rollers 42 move circularly along the profile 10 fixed to the box culvert 20, the box culvert 2 is moved.
The profile 10 introduced into the 0 is sequentially drawn between the drive roller 44 and the guide roller 42 that are arranged to face each other, and the fitting protrusion 11e is fitted to the socket 11c of the profile 10 fixed to the box culvert 20. They are fitted one after another.

At this time, the profile 10 is moved by the drive rollers 44 rolling on the inner peripheral surface of the box culvert 20.
Thus, the box culvert 20 is formed into a rectangular shape corresponding to the cross-sectional shape. At each corner of the box culvert 20, the profile 10 is in a small curved state along the trajectory of each drive roller 44.

At this time, since the strip-shaped reinforcing member 12 inserted into the reinforcing member concave groove 11g is curved with the width direction thereof as the radial direction, the substrate 11 of the profile 10 is formed.
Is urged against the inner peripheral surface of the box culvert 20 by the reinforcing member 12 in a curved state with a small radius of curvature to maintain the curved state.

As described above, the reinforcing member 12 is in the shape of a strip plate, and when it is mounted on the substrate 11, it is curved together with the substrate 11 so that the width direction thereof becomes the radial direction. On the other hand, until it is mounted on the substrate 11, it is curved and coiled in the thickness direction orthogonal to the direction along which the substrate 11 is curved. Therefore, the reinforcing member 1
No. 2 is not likely to be plastically deformed by being bent in the width direction in the radial direction until it is mounted on the substrate 11. The coiled reinforcing member 12 is easy to carry and can be easily handled.

Further, since the reinforcing member 12 is adapted to be inserted from the surface side of the substrate 11 which becomes the inner peripheral surface when spirally wound, the substrate 11 is spirally wound by the pipe making machine 40. Even when it is wound in a circular shape, it can be easily mounted on the substrate 11 by utilizing the wide space inside the pipe manufacturing machine 40.

The substrate 11 of the profile 10 formed into a spiral tube is spirally wound by the pipe making machine 40, so that when it is supplied into the pipe making machine 40, it is sequentially twisted. However, the twist is eliminated by rotating the substrate drum arranged on the surface of the earth around the vertical axis.

Further, the reinforcing member 12 is arranged in the vicinity of the pipe making machine 40 in a coiled state, and is drawn out sequentially from the coiled state to make the pipe making machine 40.
Is inserted into the reinforcing member concave groove 11g of the substrate 11 supplied to. Therefore, the reinforcing member 12 spirally wound together with the substrate 11 can be twisted if the coiled portion is rotated around an axis orthogonal to the axial direction. That's not it.

In this way, the drive rollers 44 and the guide rollers 42 move around the inside of the box culvert 20 and move away from the manhole into which the profile 10 is introduced, and the box culvert 2 is moved.
The inner peripheral surface of 0 is entirely lined with the profile 10. After that, for the tubular profile 10 lining the box culvert 20,
The profile 10 introduced into the pipe making machine 40 is cut. Then, the pipe making machine 40 is removed from the tubular profile 10 lining the box culvert 20. When the pipe making machine 40 is removed, the backfill material is
It is filled between the inner peripheral surface of the box culvert 20 and the tubular profile 10. As a result, the box culvert 20 having a rectangular cross section is lined with the profile 10.

As shown in FIG. 4, the reinforcing member 12 has a large number of slits 12b along the width direction which are open at one side edge so that the reinforcing member 12 can be easily deformed into a predetermined curved state together with the substrate 11. May be provided at equal intervals in the longitudinal direction of the reinforcing member 12. In this case, the side edges provided with the slits 12b are inserted into the reinforcing member insertion concave groove 11g of the substrate 11 so that the side edges are on the inner side.

FIG. 5A is a side view showing another example of the embodiment of the reinforcing member, and FIG. 5B is a plan view thereof. The reinforcing member 15 is formed by connecting a number of flat plate-shaped link elements 15e so as to form a strip plate shape. Each link element 15e arranged in a strip shape is
A pair of plate-shaped halves 15a and 15b, which are divided into two along the width direction, are hinged to be rotatable about the connection shaft 15c by a connection shaft 15c arranged along the width direction. Has been done. Further, the pair of adjacent link elements 15e are rotatably connected to each other by the connecting shaft 15f at one side edge portion in the width direction.

A strip-shaped reinforcing member 15 having such a structure
The adjacent link elements 15e are hinge-coupled to each other by the connecting shaft 15f so that one side edge portion can be curved so as to expand. Further, each link element 15e includes a pair of plate-shaped halves 15a and 1a.
Since 5b are hinge-coupled to each other by a connecting shaft 15c extending in the width direction of the strip-shaped reinforcing member 15, the reinforcing member 15 can be curved so that the thickness direction of the reinforcing member 15 becomes a radial direction. There is. Therefore, the reinforcing member 15 can be bent in a direction that is more easily bent in a direction orthogonal to the bending direction of the link elements 15e.

Such a reinforcing member 15 is also provided in each of the link elements 15 in the groove 11g for inserting the reinforcing member in the substrate 11.
e is inserted so that the side edge portion on the opposite side of the side edge portion to which the hinge is coupled is on the inner side, and the curved state is the same as the substrate 11. Further, each link element 15e is curved around the connecting shaft 15c and wound into a coil until it is inserted into the reinforcing member insertion groove 11g of the substrate 11.

FIG. 6 (a) is a sectional view showing another example of the profile embodiment of the present invention. In the present embodiment, the chain 16 in which a large number of link elements are hinged is used as the reinforcing member. Chain 1
6 can be bent also in a direction orthogonal to the rotating direction (curving direction) of a pair of adjacent link elements.

The board 11 is wide in the width direction of the board 11 so that the reinforcing member insertion groove 11g can accommodate the chain 16 therein. A retaining recess 11n is provided on each of the opposing inner wall surfaces of the reinforcing member insertion recess groove 11g. A cover member 17 is attached to the reinforcing member insertion groove 11g so that the chain 16 housed therein does not fall off.

As shown in FIG. 6 (b), the cover member 17 has a band shape so that it can be fitted into the reinforcing member inserting concave groove 11g, and each inner wall surface of the reinforcing member inserting concave groove 11g. A pair of side surface portions 17a facing each other, and a bottom surface portion 17 located in the opening of the reinforcing member insertion concave groove 11g.
and b have a U-shaped cross section. Then, on the outer side surface of each side surface portion 17a, a retaining projection 17c that is locked to each retaining recess 11n of the reinforcing member insertion groove 11g.
Are provided respectively.

The reinforcing member insertion groove 11 is inserted into the reinforcing member insertion groove 11g by the cover member 17.
When the board 11 is bent, the chain 16 held in g is forcibly bent in the direction orthogonal to the bending direction of each link element.
Therefore, the substrate 11 is forced to bend the chain 16
Is pressed against the inner peripheral surface of the box culvert 20 to hold the curved state.

Before the chain 16 is inserted into the reinforcing member insertion groove 11g of the base plate 11, the adjacent link elements are rotated relative to each other to form a coil having a small diameter.

FIG. 7 is a cross-sectional view showing an example of a profile 10 used in a lining method for a box culvert which is carried out by using a substrate 11 having a groove 11g for inserting a reinforcing member which is open on the inner peripheral surface side. is there. In this manner, when the substrate 11 having the reinforcing member insertion concave groove 11g opened to the inner peripheral surface side is used, without inserting the reinforcing member 19 into the reinforcing member inserting concave groove 11g of the substrate 11, By previously providing the shape retaining reinforcing member 18 on the outer peripheral surface of the substrate 11,
The substrate 11 is formed in the box culvert 20 into a spiral tube shape.

The shape-reinforcing member 18 is formed by bending a strip-shaped metal plate into a U-shaped cross section so as to cover, for example, the reinforcing member inserting concave groove 11g protruding to the front surface side of the substrate body 11a. The side edges are folded back so as to be locked by the reinforcing ribs 11h and 11k sandwiching the reinforcing member insertion concave groove 11g.

The substrate 11 spirally formed in the box culvert 20 can be plastically deformed only in the concave groove 11g for inserting the reinforcing member, which is curved so as to face each corner of the box culvert 20. Reinforcing member 19
Is intermittently inserted in a curved state corresponding to the curved state of the substrate 11. Therefore, the reinforcing member insertion groove 1 along the linear inner peripheral surface of the box culvert 20 is formed.
The reinforcing member 19 is not inserted in 1g. Then, the cover member 17 is inserted in the reinforcing member insertion groove 11g into which the reinforcing member 19 is inserted so that the reinforcing member 19 does not fall off.
However, they are sequentially and intermittently mounted.

In the profile 10 formed in the box culvert 20 in the shape of a spiral tube, the substrate 11 is entirely held in a predetermined cross-sectional shape by the shape-reinforcing reinforcing member 18, and the box culvert 2 is used.
The curved portion facing the corner portions of 0 is surely held in the curved state by the reinforcing member 19 inserted in the reinforcing member insertion groove 11g of the substrate 11 in a plastically deformed state.

As the reinforcing member 19, a chain 16 shown in FIG. 6 which can be bent in two orthogonal directions, and which can be easily bent in one direction, may be used. .

Further, in the existing pipe lining profile 10 of the present invention, as shown in FIG. 8, each side edge portion of the substrate body 11 is provided with a recessed portion 11x extending in the longitudinal direction, and the substrate body is provided. Adjacent side edge portions may be joined to each other by a strip-shaped connecting member 11y having a convex portion that is fitted into each adjacent concave streak portion 11x when 11 is spirally wound. .

[0057]

As described above, according to the existing pipe lining profile of the present invention, when the flexible strip-shaped substrate is brought into a predetermined curved state, the reinforcing member is provided from the inner peripheral surface side of the substrate. Since it is mounted, the reinforcing member is easily handled, and the substrate on which the reinforcing member is mounted is easily handled.

Further, since the reinforcing member is easily bent in a direction orthogonal to the direction in which the reinforcing member is attached to the substrate and is in a curved state, the reinforcing member is easy to handle before being attached to the substrate. .

Further, since the reinforcing member can be mounted at an arbitrary position from the inner peripheral surface side of the spirally wound substrate, it becomes possible to reinforce corresponding portions to be reinforced, and the inner peripheral surface of the existing pipe. The profile for lining the surface can have strength corresponding to the cross-sectional shape of the existing pipe.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of an embodiment of an existing pipe lining profile of the present invention.

FIG. 2 is a perspective view of a reinforcing member provided in the profile.

FIG. 3 is a cross-sectional view of a box culvert showing an example of an embodiment of a lining construction method for an existing pipe of the present invention.

FIG. 4 is a perspective view of a main part showing another example of the reinforcing member used for the existing pipe lining profile of the present invention.

FIG. 5A is a side view showing still another example of the reinforcing member, and FIG. 5B is a plan view thereof.

FIG. 6 (a) is a cross-sectional view showing another example of the embodiment of the existing pipe lining profile of the present invention, (b).
FIG. 6 is a cross-sectional view of a cover member used for the profile.

FIG. 7 is a cross-sectional view showing still another example of the embodiment of the existing pipe lining profile of the present invention.

FIG. 8 is a perspective view showing a joined state of side edge portions in still another example of the embodiment of the existing pipe lining profile of the present invention.

[Explanation of symbols]

 10 Profile 11a Substrate main body 11b Stepped-down portion 11c Socket 11d Oblique locking rib 11e Fitting protrusion 11g Recessing member insertion groove 12 Reinforcing member 12a Retaining protrusion 15 Reinforcing member 16 Chain 17 Cover member 18 Reinforcing member for retaining shape 19 Reinforcement member 20 Box culvert 40 Pipe making machine 41 Frame 42 Guide roller 43 Connecting rod 44 Drive roller

Claims (4)

[Claims] 1. An existing pipe lining profile for lining an inner peripheral surface of an existing pipe in a state of being spirally wound into a spiral pipe, the strip being made of a flexible synthetic resin. It has a plate shape, and when it is spirally wound, it has a board shape in which adjacent side edges are joined together, and a strip shape that is attached to the board along the longitudinal direction. And a reinforcing member that is curved along the longitudinal direction together with the substrate so that the curved state can be maintained, and the reinforcing member becomes an inner peripheral surface when spirally wound. An existing pipe lining profile characterized by being mounted from one side of the board. 2. The existing pipe lining profile according to claim 1, wherein the strip-shaped reinforcing member is mounted so as to be in a vertical state with respect to the substrate. 3. The existing pipe lining profile according to claim 1, wherein the reinforcing member is mounted on the substrate after the substrate is spirally wound. 4. The existing pipe lining profile according to claim 3, wherein the reinforcing member is intermittently attached only to a portion having a small radius of curvature in the spirally wound substrate.