JP4921881B2 - Lining pipe support device and support method - Google Patents

Description

  The present invention relates to a lining pipe support apparatus and a support construction method.

Conventionally, in order to rehabilitate existing pipes such as aging sewer pipes, a long profile is wound spirally in the existing pipe, and the edge portions of profiles adjacent to each other are fitted together to form a lining pipe. After manufacturing, it has been proposed to rehabilitate the existing pipe by injecting a backfill material into the gap between the existing pipe and the lining pipe. When injecting the backfilling material, in order to prevent the lining tube from buckling due to the injection pressure of the backfilling material, a support device is disposed inside the lining tube at intervals in the tube axis direction ( For example, see Patent Documents 1 and 2). In addition, in the case of a small diameter where the support device cannot be arranged, both ends of the lining pipe are sealed, and the lining pipe is filled with water to counter the injection pressure of the backfilling material (for example, (See Patent Document 3).
JP-A-10-121565 JP-A-7-268853 JP-A-7-108606

  By the way, the support apparatus of patent document 1 is employ | adopted when rehabilitating the existing pipe | tube of a large diameter (1200 mm or more). However, this support device requires a frame member, and if the aperture is less than 1000 mm, the space for the worker to assemble the frame member is restricted by the frame member, making it difficult to assemble the frame member. Can not do it.

  Moreover, the support apparatus of patent document 2 is used when rehabilitating the existing pipe | tube of a medium aperture (600-1500 mm). However, when such a support device is arranged, it becomes difficult for the operator to pass through the lining pipe as the diameter decreases, so work from either the start side manhole or the arrival side manhole In addition to the deterioration of workability, there are problems that it is not easy for workers to evacuate in an emergency. In addition, if the rehabilitation section exceeds 50m, it becomes difficult to inject the backfill material, so it is necessary to divide the rehabilitation section in the tube axis direction and inject the backfill material injection pipes for each section in sequence. However, such work is extremely difficult after the support device is installed.

  Further, Patent Document 3 is adopted when rehabilitating an existing pipe having a small diameter (250 to 800 mm) where it is difficult for an operator to install a support device, and in addition, a weight such as a metal chain is used as a lining pipe. To prevent the lining pipe from rising. However, as the caliber increases, the weight of the necessary weight increases, making it difficult to carry the weight into and out of the lining pipe, making it difficult to work, and reducing the workability. There is a risk that a metal chain or the like may be caught on the end edge of the frame and scratch it or damage the fitting part. Further, since the lining pipe is sealed, there is a difficulty in safety when the flow rate is always large or when the flow rate suddenly increases. Furthermore, when the rehabilitation section exceeds 50 m, it is necessary to increase the injection pressure of the backfilling material, but it is not possible to counter the rising injection pressure with water filling in the pipe.

  The present invention has been made in view of such problems, and when lining an existing pipe having a small diameter or a medium diameter with a lining pipe, the lining pipe is secured without reducing workability while ensuring safety. The present invention provides a supporting device for a lining pipe and a construction method for the supporting method that can reliably support and prevent buckling.

The lining pipe support device of the present invention is arranged in a circular cross-section lining pipe arranged inside an existing pipe at a set interval in the pipe axis direction, and is provided in a gap between the existing pipe and the lining pipe. A support device for supporting a backfill material to be injected, the support device comprising a pair of substantially semicircular steel reinforcing bands having an outer diameter corresponding to the inner diameter of the lining pipe, and one steel plate An adjustment plate provided at each end edge on the inner peripheral surface side of the reinforcing band and formed with an elongated hole along the circumferential direction, and an inner edge on each end edge portion on the inner peripheral surface side of the other steel plate reinforcing band And a bolt that can be inserted through the elongated hole of the adjustment plate, and a nut that can be screwed to the bolt, and is installed in the steel plate reinforcing band located at the top of the lining pipe through the lining pipe. One or more that can abut the top of the tube Force member is provided, the elongated hole of the adjusting plate of one of steel reinforcing bands with each bolt of the other steel reinforcement band is respectively inserted, the nut is screwed to each bolt, made a pair of steel plates The reinforcing band is formed in an annular shape with the distance between the edges thereof adjusted, and is in contact with substantially the entire circumference of the lining pipe.

According to the present invention, a pair of steel plate reinforcing bands are bent by loosening nuts screwed to bolts , or the distance between their edges is reduced or separated, and the interior of the lining pipe is separated. Carry in sequentially. Next, inside the lining pipe, a pair of steel plate reinforcing bands are extended in a state where the nuts screwed to the bolts are loosened , or the interval between the end edges is expanded , or a pair of reinforcements the band, a nut to the bolt through the adjusting plate and connected by screwing the assembly into an annular, disposed at a predetermined gap in the axial direction of the tube. At this time, the outer peripheral surface of each steel plate reinforcing band constituting the support device is in contact with the inner peripheral surface of the lining pipe, and the rigidity of the lining pipe is increased by the steel plate reinforcing band that is in contact with the substantially entire peripheral surface of the lining pipe. Can do. Moreover, it becomes possible to support a lining pipe with respect to the existing pipe via the reaction force member provided in the steel plate reinforcement band, and it is possible to prevent the lining pipe from being lifted when the backfill material is injected.

  As a result, the lining pipe can be reinforced by the support device, and the lining pipe can be supported by the injected backfill material so as not to buckle.

Here, since the pair of steel plate reinforcing bands constituting the support device can be formed in advance in a size that can be carried into the lining pipe using bolts and nuts, the support device is disposed in the lining pipe. Can be carried in easily. Moreover, even after the support device is installed, the steel plate reinforcement band having a certain thickness is only provided along the inner peripheral surface of the lining pipe, so that the operator can move in the lining pipe, In addition to being able to evacuate easily even at times, it is possible to construct from both opening openings. Further, even when the amount of water is large or when there is an abnormality in which the amount of water suddenly increases, a large resistance that lowers the flow capacity of the lining pipe does not occur, and the water can flow smoothly.

  If necessary, a bypass pipe can be laid in the lining pipe to guide water upstream of the lining pipe to the downstream side.

The lining pipe support device of the present invention is arranged in a circular cross-section lining pipe arranged inside an existing pipe at a set interval in the pipe axis direction, and is provided in a gap between the existing pipe and the lining pipe. A support device for supporting a backfill material to be injected, the support device comprising a pair of substantially semicircular steel reinforcing bands having an outer diameter corresponding to the inner diameter of the lining pipe, and one steel plate An adjustment plate provided at each end edge on the inner peripheral surface side of the reinforcing band and formed with an elongated hole along the circumferential direction, and an inner edge on each end edge portion on the inner peripheral surface side of the other steel plate reinforcing band And a nut that can be screwed into the bolt and a nut that can be screwed into the bolt. Through the lining pipe and the top of the existing pipe Contact possible reaction force member is erected, the elongated hole of the adjusting plate of one of steel reinforcing bands with each bolt of the other steel reinforcement band is respectively inserted, the nut is screwed to each bolt The pair of steel plate reinforcing bands are assembled in an annular shape with the distance between their edges adjusted, and contacted over substantially the entire circumference of the lining pipe.

According to the present invention, a pair of steel plate reinforcing bands are bent by loosening nuts screwed to bolts , or the distance between their edges is reduced or separated, and the interior of the lining pipe is separated. Carry in sequentially. Next, inside the lining pipe, a pair of steel plate reinforcing bands are extended in a state where the nuts screwed to the bolts are loosened , or the interval between the end edges is expanded , or a pair of reinforcements the band, a nut to the bolt through the adjusting plate and connected by screwing the assembly into an annular, disposed at a predetermined gap in the axial direction of the tube. At this time, the outer peripheral surface of each steel plate reinforcing band constituting the support device is in contact with the inner peripheral surface of the lining pipe, and the rigidity of the lining pipe is increased by the steel plate reinforcing band that is in contact with the substantially entire peripheral surface of the lining pipe. Can do. In addition, the lining pipe can be supported with respect to the existing pipe through the reaction member standing on the belly raising material, and the lining pipe can be prevented from rising when the backfilling material is injected.

As a result, the lining pipe can be reinforced by the support device, and the lining pipe can be supported by the injected backfill material so as not to buckle.

Here, since the pair of steel plate reinforcing bands constituting the support device can be formed in advance in a size that can be carried into the lining pipe using bolts and nuts, the support device is disposed in the lining pipe. Can be carried in easily. Moreover, even after the support device is installed, the steel plate reinforcement band having a certain thickness is only provided along the inner peripheral surface of the lining pipe, so that the operator can move in the lining pipe, In addition to being able to evacuate easily even at times, it is possible to construct from both opening openings. Further, even when the amount of water is large or when there is an abnormality in which the amount of water suddenly increases, a large resistance that lowers the flow capacity of the lining pipe does not occur, and the water can flow smoothly.

In this case, it is preferable that the reaction member is erected and positioned in the middle of the adjacent support device.

If necessary, a bypass pipe can be laid in the lining pipe to guide water upstream of the lining pipe to the downstream side.

A support construction method according to the present invention is a support construction method using the support device according to claim 1 , wherein a pair of steel plate reinforcing bands are bent by loosening nuts screwed to bolts. Or, the interval between the end edges is reduced or separated and sequentially carried into the lining pipe, and a pair of steel plate reinforcing bands are screwed into the nuts inside the lining pipe. It is extended in a loosened state , or the interval between the edges is expanded , or a pair of reinforcing bands are connected to each other by screwing a nut to a bolt via an adjustment plate and assembled in an annular shape After sequentially arranging at a set interval in the pipe axis direction, the reaction force member provided on each steel plate reinforcing band located at the top of the lining pipe is brought into contact with the top of the existing pipe through the lining pipe. It is characterized by letting

According to the present invention, the pair of steel plate reinforcing bands constituting the support apparatus according to claim 1 is bent by loosening the nut screwed to the bolt , or the distance between the edges thereof is reduced. Alternatively, they are separated and sequentially carried into the lining pipe. Next, inside the lining pipe, the pair of steel plate reinforcing bands carried in are extended with the nuts screwed into the bolts loosened , or the distance between the edges thereof is expanded , or The pair of reinforcing bands are connected to each other by screwing nuts to the bolts via the adjustment plate and assembled into an annular shape, and are brought into contact over substantially the entire peripheral surface of the lining pipe. Hereinafter, similarly, the loaded support apparatus is assembled and sequentially disposed at a set interval in the pipe axis direction of the lining pipe. Then, the reaction force member provided in each steel plate reinforcement band located in the top part of a lining pipe penetrates a lining pipe, and is made to contact | abut with the top part of an existing pipe.

As a result, the support device can be formed in a size that can be carried into the lining pipe in advance, so that the support device can be easily carried to the position in the lining pipe and the support device can be installed. Even after installation, the steel strip reinforcement band is only provided along the inner peripheral surface of the lining pipe, so that the operator can move through the lining pipe and work from both ends. It becomes. Moreover, it is possible to evacuate easily even in an emergency.

Thereby, when constructing a support so that it does not buckle by the backfill material into which the lining pipe is injected, it can be constructed easily while ensuring the safety of the operator. Further, it is possible to prevent the lining pipe from being lifted when the backfill material is injected.

The support construction method of the present invention is a support construction method using the support device according to claim 2 , wherein a pair of steel plate reinforcing bands are bent by loosening nuts screwed to bolts. Or, the interval between the end edges is reduced or separated and sequentially carried into the lining pipe, and a pair of steel plate reinforcing bands are screwed into the nuts inside the lining pipe. It is extended in a loosened state , or the interval between the edges is expanded , or a pair of reinforcing bands are connected to each other by screwing a nut to a bolt via an adjustment plate and assembled in an annular shape Then, after sequentially arranging at a set interval in the tube axis direction, an angling material is arranged at the bottom of the lining pipe along the tube axis direction, and a reaction member is erected at a set interval in the angling material. Existing pipe through the lining pipe It is characterized in that to contact with the top.

According to the present invention, the pair of steel plate reinforcing bands constituting the support device according to claim 2 is bent by loosening the nut screwed to the bolt , or the distance between the edges thereof is reduced. Alternatively, they are separated and sequentially carried into the lining pipe. Next, inside the lining pipe, the pair of steel plate reinforcing bands carried in are extended with the nuts screwed into the bolts loosened , or the distance between the edges thereof is expanded , or The pair of reinforcing bands are connected to each other by screwing nuts to the bolts via the adjustment plate and assembled into an annular shape, and are brought into contact over substantially the entire peripheral surface of the lining pipe. Hereinafter, similarly, the loaded support apparatus is assembled and sequentially disposed at a set interval in the pipe axis direction of the lining pipe. After this, a bellows material is arranged at the bottom of the lining pipe over the tube axis direction, and a reaction member is erected at a set interval in the bellows material to penetrate the lining pipe and abut the top of the existing pipe Let

As a result, the support device can be formed in a size that can be carried into the lining pipe in advance, so that the support device can be easily carried to the position in the lining pipe and the support device can be installed. Even after installation, the steel strip reinforcement band is only provided along the inner peripheral surface of the lining pipe, so that the operator can move through the lining pipe and work from both ends. It becomes. Moreover, it is possible to evacuate easily even in an emergency.

Thereby, when constructing a support so that it does not buckle by the backfill material into which the lining pipe is injected, it can be constructed easily while ensuring the safety of the operator. Further, it is possible to prevent the lining pipe from being lifted when the backfill material is injected.

  According to the present invention, when lining an existing pipe having a small diameter or a medium diameter with a lining pipe, the buckling is prevented by reliably supporting the lining pipe without reducing workability while ensuring safety. Can do.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 and 2 show an embodiment of a lining pipe support apparatus according to the present invention.

The support device 1 includes a pair of substantially semicircular steel strip-shaped reinforcing bands (hereinafter referred to as reinforcing bands) 2 and 3 having an outer diameter corresponding to the inner diameter of the lining pipe L, and a pair of these An adjustment mechanism 4 that can be connected by adjusting the distance between the edges of the reinforcement bands 2 and 3, and by connecting the pair of reinforcement bands 2 and 3 in an annular manner via the adjustment mechanism 4, The outer peripheral surface is set so as to contact almost the entire circumference of the inner peripheral surface of the lining pipe L. The one reinforcing band 2 disposed on the top side of the lining pipe L is provided with a reaction force member 5.

  As shown in FIG. 3, the adjustment mechanism 4 is welded to each end edge on the inner peripheral surface side of one reinforcing band 2, and the adjustment plate 41 in which a long hole 41 a is formed along the circumferential direction. The reinforcing band 3 includes a bolt 42 that is erected inward at each end on the inner peripheral surface side of the reinforcing band 3 and can be inserted through the elongated hole 41a of the adjustment plate 41, and a nut 43 that can be screwed into the bolt 42. The bolts 42 provided on the other reinforcing band 3 are inserted into the elongated holes 41a of the adjusting plates 41 provided on the one reinforcing band 2, and the nuts 43 are screwed onto the bolts 42, respectively. Thus, they are connected in a ring shape.

  Here, when the nut 43 is loosened and the bolt 42 is slid along the elongated hole 41a of the adjustment plate 41 to reduce the distance between the edges of the pair of reinforcing bands 2 and 3, one reinforcing band The distance between the top outer peripheral surface of 2 and the outer peripheral surface of the other reinforcing band 3 is set to be slightly smaller than the inner diameter of the lining pipe L. When enlarged, even if the inner diameter of the lining pipe L slightly increases or decreases due to a step or the like, the increase or decrease of the inner diameter is adjusted so that the outer peripheral surface of one reinforcing band 2 and the outer peripheral surface of the other reinforcing band 3 are It is set so as to contact each inner peripheral surface.

  The reaction member 5 is welded to a plurality of bolt holes (not shown) formed on the top of one reinforcing band 2 at a set interval in the circumferential direction, and facing each bolt hole on the inner peripheral surface side. And a bolt 52 screwed into each nut 51, and a bolt hole (not shown) is formed in the lining pipe L corresponding to the bolt hole. By screwing, the tip of the bolt 52 passes through the bolt hole of the reinforcing band 2 and the bolt hole of the lining pipe L, protrudes to the outer peripheral surface side of the lining pipe L, and comes into contact with the inner peripheral surface of the top of the existing pipe K Can do.

  The support device 1 of this embodiment is a steel plate having a thickness of 6 mm and a width of 100 mm in consideration of the rigidity of the lining pipe L having an inner diameter of 640 mm installed in the existing pipe K having a diameter of 700 mm and the injection pressure of the backfilling material. Reinforcing bands 2 and 3 bent into a substantially semicircular shape with an outer diameter of 640 mm are assembled in an annular shape, and are set to be arranged in the tube axis direction of the lining pipe L at an interval of 500 mm. . Thereby, the lack of rigidity of the lining pipe L is compensated. The bolt 42 is slidable along a long hole 41a having a length of 100 mm.

  Next, the construction point of the support device 1 configured as described above will be described.

  It is assumed that the lining pipe L is formed and arranged by winding the profile spirally inside the existing pipe K.

  First, the nut 43 of the support device 1 is loosened, one reinforcing band 2 is rotated around the bolt 42 with respect to the other reinforcing band 3, and a pair of substantially semicircular reinforcing bands 2 and 3 are set. It is bent so as to intersect at an angle, and is made smaller than the inner diameter of the lining pipe L.

  Thus, the support device 1 formed in advance smaller than the inner diameter of the lining pipe L is sequentially carried into the lining pipe L through a manhole, and is assembled and arranged at a set interval. That is, with respect to the support device 1 carried into the lining pipe L, one reinforcing band 2 is rotated around the bolt 42 in the direction opposite to the above with respect to the other reinforcing band 3, and the pair of reinforcing bands 2 , 3 are extended so as to be continuous on one line, and formed into an annular shape. Thereby, the outer peripheral surface of the edge part of a pair of reinforcement bands 2 and 3 substantially contacts the inner peripheral surface of the lining pipe L. At this time, the support device 1 is arranged so that one reinforcing band 2 on the side where the reaction force member 5 is provided is positioned on the top side of the lining pipe L.

  Next, in a state where the outer peripheral surface of one reinforcing band 2 is in contact with the inner peripheral surface of the lining pipe L, the other reinforcing band 3 is pushed down, and the outer peripheral surface is brought into contact with the inner peripheral surface of the lining pipe L. , Enlarge the spacing between their edges. At this time, the bolt 42 slides along the long hole 41a of the adjustment plate 41, and the movement of the other reinforcing band 3 is allowed. Thereby, the outer peripheral surface of one reinforcement band 2 contacts the substantially half peripheral surface of the top side among the inner peripheral surfaces of the lining pipe L, and the outer peripheral surface of the other reinforcement band 3 is the substantially half peripheral surface on the bottom side thereof. To touch. Next, by tightening the nut 43 with respect to the bolt 42, the outer surface of the adjustment plate 41 is pressed against the inner peripheral surface of the other reinforcing band 3 whose outer peripheral surface is in contact with the inner peripheral surface of the lining pipe L, and both are fastened. To do. When the fastening operation of the left and right adjusting mechanisms 4 is completed, the outer peripheral surfaces of the pair of reinforcing bands 2 and 3 are fixed in contact with the inner peripheral surface of the lining pipe L, so the inner peripheral surface of the lining pipe L The pair of reinforcing bands 2 and 3 are in contact with each other over almost the entire circumference of the lining pipe L, and the rigidity of the lining pipe L can be increased.

  Thereafter, a bolt hole is formed in the lining pipe L in accordance with the bolt hole formed in one of the reinforcing bands 2, and a bolt 52 is screwed into a nut 51 provided in the band 2, so that the tip of the reinforcing band 2 These bolt holes and the bolt holes of the lining pipe L are penetrated and protruded to the outer peripheral surface side of the lining pipe L, and are brought into contact with the top inner peripheral surface of the existing pipe K. As a result, the bottom outer peripheral surface of the lining pipe L is pressed against the inner peripheral surface of the existing pipe K, so that a certain gap is formed between the top inner peripheral surface of the existing pipe K and the top outer peripheral surface of the lining pipe L. And the state is maintained.

  Hereinafter, similarly, the support apparatus 1 is arranged at a set interval along the pipe axis direction of the lining pipe L.

  At this time, the lining pipe L is only reduced in diameter by the thickness of the reinforcing bands 2 and 3 constituting the support device 1, and the operator can use the bolt 52 of the reaction device 5 protruding inward from the top, The inside of the lining pipe | tube L can be easily moved avoiding the volt | bolt 42 of the adjustment mechanism 4 which protrudes inward from right and left. Therefore, the operator can enter and work from both the manhole on the start side and the manhole on the downstream side, and does not disturb emergency evacuation in the event of an abnormality. Further, since the support apparatus 1 can be bent to be smaller than the inner diameter of the lining pipe L, the support apparatus 1 can be easily carried to the setting position of the lining pipe L through the manhole. In addition, even when the flow rate of water is large or an abnormally large amount of water is generated, the flow resistance of the lining pipe L does not increase significantly, so that it can flow almost smoothly. Even if the amount of water is large and the lining pipe L needs to be bypassed, the bypass pipe can be laid inside the lining pipe L without being affected by the support device 1, so that the upstream side of the lining pipe L Water can be easily bypassed from the downstream to the downstream side.

  If the support device 1 is arranged in the rehabilitation section with a set interval, it is formed between the inner peripheral surface of the existing pipe K and the outer peripheral surface of the lining pipe L in the rehabilitation section, although not shown in detail. After closing both ends of the gap, a backfill material injection pipe is connected to the gap, and the backfill material is injected through the injection pipe.

  In this case, since the support device 1 is disposed on the lining pipe L at a set interval, the rigidity of the lining pipe L is improved and the lining pipe L is not buckled by the injected backfill material. Can be reinforced. Further, since the bottom of the lining pipe L is pressed and supported by the bottom of the existing pipe K via the reaction member 5, the lining pipe L can be prevented from being lifted when the backfill material is injected.

  In addition, the support device 1 can be arranged at a set interval so as to obtain the required rigidity, and the back piping material injection pipe can be guided without being affected by the support device 1. Therefore, even if the rehabilitation section becomes longer, it becomes possible to inject the backfilling material by increasing its injection pressure, and it becomes possible to shorten the construction time.

  By the way, in embodiment mentioned above, the adjustment mechanism 4 is screwed together with the plate 41 which has the long hole 41a provided in one reinforcement band 2, the bolt 42 provided in the other reinforcement band 3, and this bolt 42. Although the case where it comprised from the possible nut 43 was illustrated, it replaces with the long hole 41a of the plate 41, the long hole 41b (refer FIG. 4) opened to the lower end edge of the plate 41 is formed, or the side edge of the plate 41 is formed. You may form the L-shaped long hole 41c (refer FIG. 5) opened to an edge. In this way, when the long holes 41b and 41c that open at the end edge are formed in the plate 41, the one reinforcing band 2 and the other reinforcing band 3 can be separated. For this reason, it becomes easier to carry the support device 1 into the lining pipe L, and even if a water bypass pipe or the like is laid in the lining pipe L first, the inside of the lining pipe L Thus, the support device 1 can be assembled and disposed.

  Moreover, as shown in FIG. 6, the attachment piece 45 which provided the nut 44 which formed the reverse screw (female screw) in the edge part of one reinforcement band 2 and the edge part of the other reinforcement band 3, respectively, is fixed, Even if the adjusting mechanism 4 is configured such that a bolt 46 in which a reverse screw (male screw) is formed up and down is screwed over these nuts 44 and the distance between the one reinforcing band 2 and the other reinforcing band 3 is adjusted by the rotation of the bolt 46. Good.

  Furthermore, the reaction force member 5 shown in FIGS. 7 and 8 can be used instead of the reaction force member 5 including the nut 51 and the bolt 52. That is, the reaction force member 5 is composed of a single tube 53 such as an expandable / contractible jack, and is disposed on the bottom of the other reinforcing band 3 after the support device 1 is disposed, and the belly member extending in the tube axis direction. 6 is set up. The single pipe 53 is erected on the stomach member 6 at a set interval, for example, so as to be positioned in the middle of the adjacent support devices 1, 1, and the tip thereof is at the top of the lining pipe L. It can be inserted into the back side through the formed insertion hole and brought into contact with the inner peripheral surface of the top of the existing pipe K. Accordingly, the lining pipe L can be pressed and supported against the existing pipe K via the reaction force member 5 (single pipe 53), and the lining pipe L can be prevented from being lifted when the backfill material is injected. it can.

It is sectional drawing which shows one Embodiment of the lining pipe support apparatus of this invention with an existing pipe and a lining pipe. It is the sectional view on the AA line of FIG. It is a side view which expands and shows the adjustment mechanism of a support apparatus. It is a side view which expands and shows the modification of the adjustment mechanism of a support apparatus. It is a side view which expands and shows the other modification of the adjustment mechanism of a support apparatus. It is a partial front view which expands and shows another modification of the adjustment mechanism of a support apparatus. It is sectional drawing which shows other embodiment of the support apparatus of a lining pipe | tube of this invention with an existing pipe | tube and a lining pipe | tube. It is the BB sectional view taken on the line of FIG.

DESCRIPTION OF SYMBOLS 1 Supporting device 2,3 Reinforcement band 4 Adjustment mechanism 41 Adjustment plate 41a, 41b, 41c Elongate hole 42, 46 Bolt 43, 44 Nut
5 Reaction force member 51 Nut 52 Bolt 53 Single pipe 6 Waist raising material

Claims (4)

Supporting work for supporting the backfilling material that is arranged in the axial direction of the pipe inside the lining pipe having a circular cross section provided inside the existing pipe and is injected into the gap between the existing pipe and the lining pipe. The support device includes a pair of substantially semicircular steel plate reinforcing bands having an outer diameter corresponding to the inner diameter of the lining pipe, and end portions on the inner peripheral surface side of one steel plate reinforcing band. The adjustment plate, which is provided in the circumferential direction and has a long hole formed along the circumferential direction, and the inner plate surface side edge of each other steel plate reinforcing band, is erected inward, respectively. A bolt that can be inserted into the hole and a nut that can be screwed into the bolt, and one or the steel plate reinforcing band positioned at the top of the lining pipe can be passed through the lining pipe and contact the top of the existing pipe or a plurality of reaction member provided, one steel reinforcement The long hole of each adjustment plate command with each bolt of the other steel reinforcement band is respectively inserted, the nut is screwed to each bolt, a pair of steel reinforcing bands the spacing between their edges A lining pipe supporting apparatus characterized by being adjusted and assembled into an annular shape and being brought into contact with the entire circumference of the lining pipe. Supporting work for supporting the backfilling material that is arranged in the axial direction of the pipe inside the lining pipe having a circular cross section provided inside the existing pipe and is injected into the gap between the existing pipe and the lining pipe. The support device includes a pair of substantially semicircular steel plate reinforcing bands having an outer diameter corresponding to the inner diameter of the lining pipe, and end portions on the inner peripheral surface side of one steel plate reinforcing band. The adjustment plate, which is provided in the circumferential direction and has a long hole formed along the circumferential direction, and the inner plate surface side edge of each other steel plate reinforcing band, is erected inward, respectively. A bolt that can be inserted into the hole and a nut that can be screwed into the bolt, and the lining pipe is penetrated through the lining pipe at a set interval from the bellows disposed at the bottom of the lining pipe in the pipe axis direction. top and capable of abutting against the reaction member is erected, the one The long hole of each adjustment plate of the plate-made reinforcing band with the bolts of the other steel reinforcement band is respectively inserted, the nut is screwed to each bolt, a pair of steel reinforcing bands between those edges The lining pipe supporting apparatus is characterized in that it is assembled in an annular shape by adjusting the interval of the lining pipe and is brought into contact with the entire circumference of the lining pipe. A support construction method using the support apparatus according to claim 1 , wherein a pair of steel plate reinforcing bands are bent by loosening nuts screwed to bolts , or between their edges. The interval is reduced or separated and sequentially carried into the lining pipe, and within the lining pipe, a pair of steel plate reinforcing bands are extended with the nuts screwed to the bolts loosened , or , Enlarge the distance between the edges , or connect a pair of reinforcing bands by screwing the nuts to the bolts via the adjustment plate and assembling them annularly, leaving a set distance in the tube axis direction After sequentially arranging, the construction of the support structure is characterized in that the reaction force member provided on each steel plate reinforcement band located at the top of the lining pipe is brought into contact with the top of the existing pipe through the lining pipe Method. It is the construction method of the support work using the support work apparatus of Claim 2, Comprising: A pair of steel plate reinforcement bands are bent by loosening the nut screwed into the bolt , or between those edges. The interval is reduced or separated and sequentially carried into the lining pipe, and within the lining pipe, a pair of steel plate reinforcing bands are extended with the nuts screwed to the bolts loosened , or , Enlarge the distance between the edges , or connect a pair of reinforcing bands by screwing the nuts to the bolts via the adjustment plate and assembling them annularly, leaving a set distance in the tube axis direction After sequentially disposing, the lining material is arranged in the tube axis direction at the bottom of the lining pipe, and the reaction member is erected at a set interval from the lining material to penetrate the lining pipe and the top of the existing pipe It is made to contact with Shoring method of construction to be.

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