JPH047434A - Method and device for applying lining - Google Patents

Abstract

PURPOSE:To save construction costs by wrapping lining plate around a plurality of frames, securing the outer periphery of the lining plate to the frames by means of a fixing belt, and connecting the edges of the lining plate to form an inner surface type frame of approximately cylindrical shape. CONSTITUTION:A lining plate 36 is wrapped around the outer peripheries of a plurality of frames 6, while the frames are being circumferentially rotated by means of rollers 23, 30. The plate 36 is temporarily fixed to the frames 6 by means of hooks 13 and each of fixing belts 35 is wound around the outer periphery of the plate 36 and the belts 35 are stretched by means of a belt tensioning means 34 to fix the plate 36 to the frames 6. Then the hooks 13 are removed and the edges 36b of the plate 36 are connected to form an inner surface type frame. The frame is transferred into a tunnel 5 and concrete 41 is placed between the inner wall 5a and the outer surface of the plate 36. As a result, by covering the inner surface with a lining plate, the number of repairing work can be reduced, resulting in reduced construction costs.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a lining method and apparatus for covering the inner wall surface of a tunnel such as an existing concrete pipe damaged due to aging etc. with a lining plate or the like. .

[Conventional technology]

Concrete sewer pipes buried underground, etc.
As the pipes deteriorate, water leakage may occur, so it is necessary to repair the inner walls of the existing sewer pipes.

Conventionally, this repair work has used a cylindrical inner formwork roughly composed of a plurality of curved iron plates and a support device to support them. This repair method using inner formwork involves assembling an inner formwork into a substantially circular shape along the inner wall surface of the existing sewer pipe, and pouring concrete between the outer peripheral surface of the formwork and the inner wall surface of the existing sewer pipe. After the concrete has hardened, the formwork is removed and moved to the next section, and the above operations are repeated in order to cover the inner wall surface of the existing sewer pipe with new concrete.

[Problem to be solved by the invention]

However, in the conventional repair method mentioned above, since the covered inner wall surface is concrete, the concrete corrodes due to bacteria in the sewage flowing in the sewer pipe, bacteria in the sewage sludge, and gases generated from the sewage. The problem is that it gets damaged. In order to carry out repair work again due to this damage, it is possible to recoat the inner wall surface of the pipe using the above-mentioned repair method, but this not only increases costs, but also causes the inner diameter of the pipe to decrease if the repair work is reversed. There is a problem that the flow rate decreases.

Therefore, in order to solve the above-mentioned problems, the present invention covers the inner walls of existing sewer pipes, etc., which have been damaged due to aging etc., with a lining surface that is less likely to be corroded or damaged by gases generated from sewage. The object of the present invention is to provide a lining construction method and apparatus that can reduce the number of repair works and reduce costs.

[Means to solve the problem]

Next, means for achieving the above object will be explained with reference to FIGS. 1 to 5, which correspond to embodiments.

This lining construction method of the invention involves rotating a plurality of sets of frame bodies each assembled in a substantially ring shape by connecting a plurality of beams formed in an arc shape in the circumferential direction, while rotating the outer periphery of each frame body. After wrapping a flexible lining plate around the lining plate and temporarily fixing each peripheral edge of the lining plate to the frame body with a hook, the outer periphery of each lining plate is fastened and fixed to the frame body with a fixing belt, The hooks are removed, the respective frames are connected, the peripheral edges of each lining plate are connected, a substantially cylindrical inner formwork is formed, the frame is carried into a tunnel, and the inner wall surface of the tunnel and the inner surface A predetermined gap is set between the outer peripheral surface of the formwork, concrete is poured into the gap, and after the concrete has hardened, the inner formwork is removed from the mold, and the inner wall of the tunnel is covered with the lining plate. It is characterized by forming a lining surface that is

Further, the lining construction device of the present invention includes a plurality of sets of frame bodies that are assembled into a substantially ring shape by connecting a plurality of beams each formed in an arc shape, and a frame body that is divided into a plurality of sets and supports each of the frame bodies. , a connecting support column connecting each frame, a roller provided on the connecting support column for rotating and transporting the frame and positioning the frame, and a roller connected to the connecting support column and for positioning the frame. A support body that supports the frame in a substantially ring shape, a connecting portion that connects the plurality of divided connecting support columns, and a fixing belt that fastens the lining plate wrapped around the outer periphery of each of the frame bodies. and a belt tightening section that holds the fixed belt under tension.

(Function) A plurality of sets of substantially ring-shaped frames 6, which are composed of arcuate beams 7 and supported by connecting support columns 15 and supports 28°33, are moved by rollers 23, 3.
The lining plate 36 is wound around the outer periphery of each frame body 6 while rotating the frame body 6 in the circumferential direction.

After each lining plate 36 is temporarily fixed to each frame body 6 with a hook 13, each fixing belt 35 is attached to the lining plate 3.
The fixing belt 35 is wound around the outer periphery of the frame body 6, and the fixing belt 35 is tightened by the belt tightening part 34 to fix the lining plate 36 to the frame body 6.

Then, the hooks 13 are removed, the frames 6 are connected by the connecting portions 16, and the peripheral edges 36b of the lining plates 36 attached to each frame 6 are connected to each other to form a substantially cylindrical inner surface. Form a frame.

Thereafter, the inner formwork is carried into the tunnel 5, and concrete 41 is placed in the gap between the tunnel inner wall surface 5a and the outer peripheral surface of the lining plate 36, which becomes the outer peripheral surface of the inner formwork.

After the concrete 41 has hardened, the lining plate 36 is separated from the frame 6 by demolding the inner form, that is, deforming the frame 6 by operating the supports 28.33, and this lining plate 36 is removed from the tunnel. A lining surface is formed covering the inner wall surface 5a.

〔Example〕

First, the configuration of the lining construction device will be explained.

As shown in FIG. 1, the construction device 1 of this embodiment is a device for covering the inner wall 5a of an existing concrete pipe 5 buried underground with a lining plate 36. It is composed of a rear part 4 and an intermediate part 3 connected between these parts.

Each part 2, 3.4 is roughly composed of a ring frame 6 as a frame body and a connecting support column 15, and each of these parts 2,
3.4 are connected to each other by a connecting turnbuckle 18.

First, as shown in FIG. 1, the ring frame 6 is composed of three sets of the front part 6a, the center part 6b, and the rear part 6C. In addition, the first part 2, the middle part 3. Rear part 4
Since each of these is similarly composed of three sets of ring frames 6, the explanation of each ring frame 6 of the intermediate part 3 and the rear part 4 will be omitted, and the ring frame 6 of the leading part 2 will be explained.

As shown in FIG. 2, the ring frame 6 is composed of a round beam 7a located above, a pair of side beams 7b and 7c located on both sides, and an inverted beam 7d located at the bottom. Each beam 7a, 7b, 7c
, 7d are formed in a substantially circular arc shape and a substantially T-shaped cross section. One of the side beams 7b and the crown beam 7a are detachably connected by bolts 8. Further, each of the other beams 7a, 7b, 7c, and 7d is rotatably connected by a hinge 9, and when each beam is assembled into a ring shape, this hinge is located at a position close to each hinge 9. A fixed pin 10 that restricts the rotation of the parts 9 is fitted into each part. A support plate 11 reinforced with a rib plate is provided at the opposing midway portion of each of the beams 7a, 7b, 7c, and 7d.

The ring frame 6a at the front (right side in FIG. 1) of the ring frame 6 has several spuds 12 arranged radially.
is provided. This spud 12 protrudes from the outer circumferential surface of the ring frame 6a and is adapted to position (center) the ring frame 6 within the concrete pipe 5 during construction. The front ring frame 6a and the rear ring frame 6C each have beams 7a and 7b except for the inverted beam 7d.

A plurality of hooks 13 for temporarily holding lining plates 36, which will be described later, are provided at each of the hooks 7c. As shown in FIG. 5, this hook 13 is provided so that its hook-shaped tip extends forward and backward, and a compression coil spring 14 is attached thereto.

And each of these front, center, and rear ring frames 6
a, 6b, and 6c are connected to each other by a connecting support column 15 via the support plate 11 at a predetermined interval.

Next, as shown in FIG. 2, the connecting support columns 15 are attached to the support plates 11 provided on each beam of the ring frame 6 described above so as to have a pitch of 90° in the circumferential direction. These connecting support columns 15 are formed into a prismatic shape with a rectangular cross section. Middle part 3. It is designed to be divided into rear portions 4, respectively. Each of the connecting support columns 15 of the leading part 2 and the trailing part 4 has one end 15a formed as a blind end, and the other end 15. A connecting portion 16 is provided at b.

Further, each connecting support column 15 of the intermediate portion 3 has connecting portions 16 at both ends.
is provided.

Each connection portion 16 has a connection bracket 17 projecting thereon, and a convex portion and a concave portion that can fit into each other are provided on each other end surface and both end surfaces, respectively. Each of the connecting support columns 15 of each part 2, 3.4 is connected by a connecting turnbuckle 18 via each connecting bracket 17 while fitting the convex part and the recessed part. Middle part 3. The rear part 4 is connected. This connecting turnbuckle 18 can be attached to and detached from the connecting bracket 17 using a mounting pin 19.

Now, a horizontal support part 21 and a vertical support part 22 are provided at each end 15a (blind end) of the connecting support column 15 in the leading part 2 and the rear part 4, respectively.

First, the horizontal support portion 21 is provided on a connecting support column 15 fixed to a pair of side beams 7b and 7c forming both sides of the ring frame 6, as shown in FIG. At one end 15a of each connecting support column 15, rollers 23 extending outward from each other (in the left-right direction in the figure) are attached to a support shaft 24.
are provided through each. As shown in FIG. 1, each roller 23 is provided in pairs at the front and rear. The support shafts 24 of each roller 23 are attached to pass through the connection support column 15, and a handle for adjusting the rotational direction of the rollers 23 and the amount of protrusion of the rollers 23 is provided at the end of each support shaft 24 facing each other. 25 are provided respectively. In addition, each support shaft 2
A coil spring 26 is attached to the roller 23.
is pressed against both side wall surfaces within the concrete pipe with a predetermined pressure to assist in positioning in the left and right direction (horizontal direction).

Furthermore, brackets 27 are provided on opposing sides of each of the connecting support columns 15 located between the front and rear rollers 23 . As shown in FIG. 2, a horizontal turnbuckle 28 as a support is passed approximately horizontally between the connecting support columns 15 via these brackets 27, and connects each of the connecting support columns 15 located on the left and right. are doing. This horizontal tart buckle 28 is configured such that the rods 28a at both ends expand and contract approximately equally by rotating the operating section at the center of the barrel. The ends of both rods 28a are rotatably attached to the bracket 27, respectively.

Next, the vertical support portions 22 are provided on opposing connecting support columns 15 provided on the crown beam 7a and the inverted beam 7d that constitute the upper and lower portions of the ring frame 6, as shown in FIG. Similar to the horizontal support section 21, rollers 30 are provided at one end 15a of each connection support column 15 so as to extend outward from each other (in the vertical direction in the figure) via a support shaft 31. This vertical support section 22 is provided with one set of the rollers 30, and assists in positioning in the vertical direction (vertical direction).

Further, as shown in FIG. 3, a bracket 32 is provided on the opposing side surface of each connecting support column 15 close to the roller 30, and a vertical turnbuckle 33 constituting a support body is provided. This vertical turnbuckle 33 is vertically spanned by each connecting support column 15 and is perpendicular to the horizontal turnbuckle 28 . Note that this vertical turnbuckle 33 has the same structure as the horizontal turnbuckle 28, so a detailed description of the structure will be omitted.

In addition, the lower connecting support column 15 attached to the invert beam 7d of the connecting support columns 15 located above and below has a leading part 2 degrees, a middle part 3. Belt tightening portions 34 are provided at two locations near both ends of each portion of the rear tail portion 4. As shown in FIG. 4, this belt tightening section 34 is composed of a screw jack, and is provided with a lining plate 3, which will be described later.
Fixing belt 35 for fixing 6 to the ring frame 6
Both ends of the fixing belt 35 are held, and the fixing belt 35 is tightened and held by operating the handle.

Next, the lining plate 3 is attached to the above-mentioned lining construction device 1 and serves as a covering material for the concrete pipe 5 to be repaired.
6 will be explained.

This lining plate 36 is made of a flexible hard resin material such as vinyl chloride resin, and as shown in FIG. 7, a large number of mutually parallel rib pieces 36a are integrally formed on one surface. There is. The lining plate 36 has a rectangular shape with a length of 1,000 mm and a width of 314 mm, for example, and is formed so that the rib pieces 36a are continuous in the longitudinal direction, and 10 pieces are connected in the width direction and held in the lining construction device 1. It looks like this. The joining of each lining plate 36 in the width direction is performed by fitting a substantially U-shaped joint 37 as shown in FIG. 7 with rib pieces 36a at both ends butting against each other.

Next, a method of lining an existing concrete pipe 5 as a tunnel using the lining construction apparatus 1 described above will be explained. By the way, with the construction equipment of this embodiment, construction is carried out in 4m units, so the first part 2. Two parts of the intermediate part 3 are used for the rear part 4.

First, the construction equipment 1 is carried into the existing concrete pipe 5 underground. As a method for carrying this in, for example, a shaft is excavated and the construction equipment is transported from the shaft to the top part 2, middle part 3. It will be transported in parts divided into the rear part 4 and the tail part 4.

At the time of delivery, the horizontal and vertical turnbuckles 28, 33 are in a retracted state as shown in FIG. 8, and the ring frame 6 is in a deformed state in which it is bent.

Next, each part 2, 3° 4 is connected within the concrete pipe 5. The connecting turnbuckle 18 for connecting each part 2, 3.4 is pin-coupled to the connecting bracket end 17 in an extended state as shown in FIG. Not matched.

Then, the horizontal and vertical turnbuckles 28.degree. 33 are operated to extend the rods 28a, 33a, and the hanging frame 6 is assembled into a substantially circular shape within the tube. A fixing pin 10 is attached to each hinge 9 portion of the assembled ring frame 6, and the crown beam 7a and one side beam 7b are fixed with bolts 8.

Next, the rollers 23 and 30 of the leading part 2 and the trailing part 4 are directed in a direction perpendicular to the axial direction of the concrete pipe 5 by rotating the handle. Then, while rotating the entire construction apparatus 1, the lining plates 36 are attached in order from the top part 2.

Since each lining plate 36 is bonded in advance as described above, it is attached to each part 2, 3.4 every rotation. The lining plate 36 is attached by wrapping it around the outer circumference of the ring frame 6 using the hook 13 provided on the ring frame 6 so that the rib piece 36a protrudes from the outer circumferential surface. Temporarily fasten. The installation of this lining plate 36 is carried out using the inverted beam 7d.
The lining plate 36 is not coated on the bottom part of the concrete pipe 5, in this embodiment, the 83.2° part of the pipe bottom (the part indicated by the arrow A in FIG. 2).

Next, the fixing belt 35 is wrapped around the outer periphery of the temporarily fixed lining plate 36. Both ends of the wound fixing belt 35 are pulled toward the center of the ring frame 6 from the bottom part of the ring frame 6 where the lining plate 36 is not attached, and these ends are held by the belt tightening part 34.

After holding the fixed belt 35, the handle of the belt tightening section 34 is operated to pull both ends of the fixed belt 35 and hold it in a tensioned state. In this state, each lining plate 36 is wrapped around the outer periphery of the ring frame 6 and has a substantially cylindrical shape.

Next, the hooks 13 that temporarily fixed each lining board 36
Remove.

Then, by operating the connecting turnbuckle 18 of the connecting part 16, the rods at both ends are retracted, and the connecting support columns 15 are connected without any gaps, and the lining plate 36 wrapped around each part 2, 3.4 is The peripheral edges 36b of the two are butted against each other. At this time,
A joint material 40 having a T-shaped cross section as shown in FIG. 6 is bonded from the inner surface of each lining plate 36 to the abutting peripheral edges using an adhesive.

When each part 2, 3.4 is connected, the lining plate 36
It is formed into a substantially cylindrical shape and serves as an inner formwork for the concrete pipe 5. Then, in this state, the rotating directions of the rollers 23 and 30 are corrected in the direction of the tube axis, and the entire construction apparatus 1 is moved to the construction site. The amount of protrusion of the rollers 23 and 30 is set in advance,
Although the lining plate 36 is positioned at approximately the same distance from the pipe inner wall 5a, spuds 12 are attached to ensure correct setting. The spud 12 passes through the lining plate 36, and its tip abuts against the inner wall surface 5a of the pipe.

When the position of the construction device 1 is determined, concrete 41 is cast in the gap between the inner wall surface 5a of the existing concrete pipe 5 and the outer periphery of the inner formwork, that is, the outer circumferential surface of the lining plate 36. This concrete 41 uses foamed mortar in which air bubbles such as air are mixed into the mortar. The foamed mortar 41 is cast by pouring it from the peripheral end of the front ring frame 6a of the top part 2, or by providing several injection holes from the inner surface of the construction device 1, and pouring the foamed mortar through these injection holes.

After the foaming mortar 41 is cast, the foaming mortar 41 hardens in about 30 minutes to one hour. After curing, spud 12
is completely removed, and the fixing belt 35 is cut from the belt tightening part 34. Next, the fixing pin 10 is removed from the hinge portion between each beam 7 of the link frame 6, and the port 8 fixing the crown beam 7a and one side beam 7b is removed.

Then, by operating the horizontal and vertical turnbuckles 28° 33, each rod 28a, 33a was retracted, the distance between each beam 7 of the ring frame 6 was shortened, and the ring frame 6 was bent in the same manner as when it was delivered. It is deformed into the state (shown in Figure 8) and demolded. At this time, the spindles 24 of the rollers 23 and 30
．． The urging force of the coil spring 26 provided at 31 is also applied, and demolding is easily performed.

Then, the lining plate 36 that had been fixed to the ring frame 6 separates from the ring frame 6 and comes to cover the pipe inner wall 5a. The rib pieces 36a of the lining plate 36 are buried in the foamed mortar 41, and are substantially integrated with the foamed mortar 41 to form the inner wall surface of the existing concrete pipe 5.

After demolding, the lining plate 36 is wrapped around the construction device 1 again, and the concrete pipe inner wall 5a is sequentially coated.

Note that in the above lining method, the bottom of the existing concrete pipe 5 is not covered with the lining plate 36, but if necessary, this is done in a separate process.

Therefore, according to the lining construction device and the lining construction method configured in this way, unlike conventional formwork, it is not solidly constructed with iron plates, etc., but with a ring-shaped frame and -1
It is composed only of pillars that support it, and the material that corresponds to the conventional iron plate is hard resin, and the lining surface is the inner wall surface of the tunnel, etc., so the entire device is simpler, lighter, and easier to install. There is an effect. Also,
This construction equipment allows the formwork itself to rotate, allowing workers to install lining plates without changing their footing.

Furthermore, since this construction device is divided into a plurality of parts in the longitudinal direction, it can be used not only for straight pipes but also for curved pipes.

Another effect is that the reduction in the flow rate due to the reduction in the inner diameter of the pipe due to the thickness of the filling concrete (foamed mortar) covering the inner wall of the pipe can be compensated for by the reduction in the roughness coefficient of the surface of the lining plate.

In this embodiment, a method and apparatus for lining the inner wall surface of an existing concrete pipe have been described, but the invention is not limited to this, and the method is not limited to this.
It can also be used for lining shield tunnels, covering the inner walls of Huyum tubes, etc.

In addition, in this example, an example was described in which the inner wall surface of the existing concrete pipe except for the bottom is covered with the lining plate, but if hooks, etc. are added to the invert beam, the entire circumference of the inner wall of the pipe can be covered with the lining plate. be able to.

Furthermore, in this embodiment, an example was described in which the horizontal and vertical turnbuckles that support the ring frame, the connecting turnbuckles that connect the connecting support columns, etc. are operated manually, but it is also possible to operate them using hydraulic pressure or the like. It's okay. In this case, automation of construction can be mentioned.

〔Effect of the invention〕

As explained above, the lining construction method and its device according to the present invention cover the inner surface of the concrete pipe, etc. to be repaired with a lining plate, so corrosion and damage caused by gases such as sewage do not occur, and the repair work is carried out again. This has the effect of almost eliminating the

Furthermore, during construction, the frame body of the construction device of the present invention is rotated by rollers, so the work can be done without changing the footing when installing the lining board, and the lining board can be easily installed. Furthermore, since it is divided into multiple parts by connecting support columns, it has the effect of making it easier to transport during construction. Furthermore, since it can be divided, it has the effect of being able to handle not only straight construction but also curved construction.

The effect is that the reduction in water flow due to the reduction in the inner diameter of concrete pipes, etc. due to rough lining construction can be compensated for by the reduction in the roughness coefficient of the lining plate surface.

[Brief explanation of the drawing]

36-... Lining plate, 36b... Peripheral edge,
FIG. 1 is a side sectional view showing an embodiment of the lining construction device according to the present invention, FIG. 2 is a front view of the lining construction device according to the same embodiment, and FIG. 3 is a sectional view taken along the line ■-■ in FIG.
FIG. 4 is a sectional view taken along line rV-IV in FIG. 1, and FIG. 5 is a partially enlarged side view of the lining construction apparatus according to the same embodiment.
FIGS. 6 and 7 are enlarged sectional views showing the joint portion of the lining plates, and FIG. 8 is an explanatory diagram of the operation of the lining construction apparatus according to the same embodiment. 1... Construction equipment, 5... Tunnel (concrete pipe), 5a... Inner wall (pipe inner wall), 6... Frame (ring frame), 7... Beam, 13... Hook, 15-...Connection support column, 16...Connection part, 23.30...
・Roller, 28.33...Support (horizontal turnbuckle, vertical turnbuckle),

Claims (1)

[Scope of Claims] 1) A plurality of sets of frames each having a plurality of arc-shaped beams connected to each other and assembled into a substantially ring shape are rotated in the circumferential direction, and the outer periphery of each frame is rotated. , after winding each flexible lining plate and temporarily fixing each peripheral edge of the lining plate to the frame with a hook, tightening and fixing the outer periphery of each lining plate to the frame with a fixing belt, The hooks are removed, the respective frames are connected, the peripheral edges of each lining plate are connected, a substantially cylindrical inner formwork is formed, the frame is carried into a tunnel, and the inner wall surface of the tunnel and the inner surface A predetermined gap is set between the outer peripheral surface of the formwork, concrete is poured into the gap, and after the concrete has hardened, the inner formwork is removed from the mold, and the inner wall of the tunnel is covered with the lining plate. A lining construction method characterized by forming a lining surface. 2) A plurality of sets of frames assembled into a substantially ring shape by connecting a plurality of arc-shaped beams, and a connection which is divided into a plurality of parts and supports each of the frame bodies and connects the frame bodies. a support column; a roller provided on the connection support column for rotating and transporting the frame and positioning the frame; and a roller connected to the connection support column and supporting the frame in a substantially ring shape; a support body that connects the plurality of connecting support pillars; a fixing belt that tightens the lining plate wrapped around the outer periphery of each frame; and a fixing belt that tightens the fixing belt. A lining construction device comprising: a belt tightening section for holding a belt;