JPH0978993A - Tunnel lining method, tunnel lining steel barrel body fastener and tunnel lining steel barrel body transport truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To disuse jointing by welding in a tunnel. SOLUTION: Divided bodies 2, 3 are integrated by welding outside of a tunnel. An obtained barrel body 1 is provided with claw arms 4 of mechanical connectors at the front end, and claw receiving fittings 7 at the rear end. The claw arms 4 are locked to the claw receiving fittings 7 of a preceding barel body to connect the barrel bodies mechanically to each other. Welding in the tunnel is thereby disused so as to prevent the worsening of work environment in the tunnel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tunnel rehabilitation technique which is carried out when an existing tunnel used as a waterway for water and sewage, industrial or agricultural use is deteriorated.

[0002]

2. Description of the Related Art When a tunnel used as a waterway for sewage, industrial or agricultural use is deteriorated, it must be repaired or repaired, and the following methods have been conventionally adopted. A method in which a chemical solution is injected into the ground around the tunnel, then the deteriorated part of the concrete is peeled off, and then re-covered with unreinforced or reinforced concrete. Tunnel inner lining A method of lining the inner surface with concrete without destroying the concrete.

However, in the above method, it is necessary to always pay attention to the falling table when the existing concrete is mounted,
The burden on the operator is heavy. Further, in the above method, the effective cross-sectional area is reduced by the thickness of the lining concrete, and the initial water flow capacity may not be secured. The thinner the lining concrete is, the less effective the repair is.

Therefore, attention has been paid to a technique of reinforcing the lining with a steel material having a similar cross section that is slightly smaller than the existing tunnel cross section.
For example, Japanese Patent Application Laid-Open No. 4-265396, "Method for installing lining of existing tunnel" has been proposed. In this technology, a liner with a similar cross section that is slightly smaller than the cross section of the inner wall of an existing tunnel is divided into two parts, a lower liner and an upper liner, and they are carried into the tunnel by a special truck. Then, it is assembled, welded, and finish-painted. In addition, the special trolley conveys the lower lining material and the upper lining material at the same time, but in that case, lower the upper lining material and raise the lower lining material,
In addition, the lower lining material is forcibly elastically deformed so that the diameter is totally reduced. By doing so, it is possible to pass through the inside of the lining material that has already been constructed.

[0005]

However, the conventional technique using the above-mentioned dedicated carriage has the following problems. (A) Since the lower lining material and the upper lining material are joined by welding in the tunnel, the working environment is deteriorated by the gas and heat generated by the welding, and ventilation measures and heat measures must be taken for that. Inevitably, the construction cost increases. Since the working environment is bad, the welding quality tends to deteriorate. (B) Since the lower lining material and the upper lining material are joined to the preceding lining material by welding, the same problem as in (a) occurs. (C) As shown in FIG. 7 of the above publication, the front wheels of the truck rest on the existing tunnel floor, the rear wheels rest on the lining material, and the truck leans forward and downward. On the other hand, the lower and upper linings need to be horizontal. The need for angle correction complicates the structure of the truck. An object of the present invention is to provide a technique capable of solving the above (a) to (c).

[0006]

In order to solve the above problems, the first aspect of the present invention is to carry in a steel cylinder having a similar cross section slightly smaller than the inner wall surface cross section of the existing tunnel into the existing tunnel. A tunnel lining is formed by a connecting step of connecting the tubular body to the preceding tubular body with a mechanical fastener. Since welding work inside the tunnel is no longer necessary, there is no need to take measures for gas emission, and construction costs can be reduced. Moreover, since welding can be performed in a place with good conditions, the welding quality is good and the quality of the welded portion can be improved.

According to a second aspect of the present invention, there is provided a step of manufacturing a divided body obtained by dividing a steel cylinder having a similar cross section which is slightly smaller than an inner wall surface cross section of the existing tunnel, and carrying these divided bodies to the entrance and exit of the existing tunnel. A transportation process, a process of assembling the divided bodies by welding outside the existing tunnel, a process of loading the assembled cylinder into the existing tunnel, and connecting this cylinder to the preceding cylinder with mechanical fasteners. The tunnel lining is formed with the connecting process. In addition to the effect of claim 1, the transportation cost can be reduced.

According to a third aspect of the present invention, there is provided a step of manufacturing a divided body obtained by dividing a steel half-cylindrical body having an inverted U-shaped cross section, which is slightly smaller than the inner wall surface cross section of the horseshoe-shaped tunnel, and these divided bodies of the existing tunnel. Carrying process to carry to the entrance / exit, process of assembling the divided bodies by welding outside the existing tunnel, process of carrying the assembled half-divided cylinder of the inverted U-shaped section into the existing tunnel, and this half-divided cylinder The tunnel lining is made up of a connecting step of connecting the first half cylinder to the preceding half cylinder with a mechanical fastener and a fixing step of fixing the lower end of the half cylinder to the floor of the tunnel with a foundation bolt. Since welding work inside the tunnel is no longer necessary, there is no need to take measures for gas emission, and construction costs can be reduced. Moreover, since welding can be performed in a place with good conditions, the welding quality is good and the quality of the welded portion can be improved.

According to a fourth aspect of the present invention, there is provided a fastener for connecting steel cylinders having similar cross sections which are slightly smaller than the inner wall surface cross section of the existing tunnel, and a claw receiving metal fitting fixed to an outer surface of an end of one cylinder. A steel tube for tunnel lining is composed of an arm with a claw swingably locked to the outer surface of the end of the other cylinder for meshing with the claw receiving fitting, and a spring for urging this arm toward the meshing side. Make up the body fasteners. By urging the pawl attaching arm toward the meshing side with the spring, the next cylinder can be surely connected to the preceding cylinder in the inaccessible space between the inner wall surface of the tunnel and the cylinder. Since the arm with a claw and the like are located outside the cylinder and do not leave obstacles inside the cylinder, it is possible to secure a sufficient effective water flow area. Welding work in the tunnel can be abolished by adopting such a mechanical connector.

A fifth aspect of the present invention is characterized in that a seal member is interposed between the steel cylinders and the seal material is compressed and fixed. The seal member enhances the sealing property, and there is no fear that the fluid inside the cylinder will leak out and the fluid will flow into the cylinder from the outside. Since the sealing material was fixed between the cylinders,
There is no need to worry about the sealing material shifting or protruding, and it is possible to exert the sealing performance for a long time.

According to a sixth aspect of the present invention, a bolt is provided on the inner surface of one end of the steel cylinder, a nut is screwed to the bolt, and the nut is hung on the inner surface of the other steel cylinder. It is characterized in that it is provided with a pulling means capable of narrowing the interval between the cylinders by attaching a piece and tightening the nut. Since the next cylinder can be easily drawn to the preceding cylinder, the construction efficiency can be improved.

According to a seventh aspect of the present invention, there is provided a carrier truck for transporting a steel cylinder for lining a tunnel in a state of being floated from the ground. The carrier truck has front wheels, middle wheels and rear wheels, and the middle wheels can be lifted and lowered. The distance between the middle wheel and the rear wheel is set to be larger than the length of the steel cylinder, and the front wheel is set at a predetermined height higher than the rear wheel, and the predetermined size of the cylinder installed in the tunnel. It is characterized by matching the difference between the floor and the tunnel floor. Since the front wheel positioned higher than the rear wheel and the vertically movable middle wheel are provided, it is possible to transport the tubular body in a horizontal state and abut against the preceding tubular body. That is, since the cylinder and the cylinder control device for correcting the inclination of the cylinder are not required, the mechanism of the carriage can be simplified.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the accompanying drawings. The drawings should be viewed in the direction of reference numerals. FIG. 1 is an exploded perspective view of a tunnel lining steel cylinder (first embodiment) according to the present invention. A tunnel lining steel cylinder 1 (hereinafter abbreviated as “cylindrical 1”) is a semicircle. It is composed of an upper divided body 2 having a cross section and a lower divided body 3 having a channel shape. On the outer surface of one end of each of the split bodies 2 and 3, arms 4 with claws (... indicates a plurality, the same applies hereinafter) and strip-shaped longitudinal guide plates 5 are attached. Bolts 6 ... Which are part of the pulling means are attached to the inner surface of the end portion. On the other hand, the claw receiving metal fittings 7 ...
, And a nut hook piece 8 ... Which is a part of the pulling means is attached to the inner surface of the end portion. Furthermore, guide plates 11 ... And guide plates 12 also serving as suspenders are attached to the upper edge of the lower divided body 3. The guide plate 12 that also serves as a hanger, the arm 4 with the claw, and the like will be described in detail later.

FIG. 2 is a perspective view of the cylindrical body (first embodiment) according to the present invention after assembly, in which the upper divided body 2 is placed on the lower divided body 3 and the mating portions are integrated by welding. Yes, this completes the horseshoe-shaped cylinder 1.

FIG. 3 is a perspective view of a tubular fastener according to the present invention, in which the fastener 20 includes the claw receiving member 7 and the claw arm 4 having a claw 4a that meshes with the claw receiving member 7. , Brackets 21 and 21 for swingably supporting the arm 4
And a leaf spring 2 fixed to the brackets 21 and 21 with screws 22 and 22 for urging the arm 4 in the meshing direction.
3 and 3. Although not shown in FIGS. 1 and 2, a seal member 25 is fitted to one end of each of the divided bodies 2 and 3. The seal member is preferably water-expandable rubber or neoprene rubber.

FIG. 4 is a sectional view showing a fastener, a sealing member, and a pulling means of the cylindrical body according to the present invention.
0 is an eye plate 31, a pin 32, a bolt 6 whose head is locked by this pin 32, a nut hook piece 8,
It consists of a nut 33. By tightening the nut 33, the following cylinders 1 can be attracted to the preceding cylinder 1A. The operation procedure will be described later.

The sealing member 25 in the shape of a square packing is provided with a groove 26.
Then, it is pushed into the U-shaped groove formed by the distance piece 27 and the seal member guide ring 28. The seal member 25 is “fixed” by pushing the seal member 25 into the U-shaped groove. Even if pressure is applied to the seal member 25 during use, the seal member 25 is fitted into the U-shaped groove, so there is no fear of easily protruding or shifting from the U-shaped groove. Further, it is preferable from the viewpoint of preventing the falling off that an adhesive agent is applied to the U-shaped groove and the sealing member 25 is fitted and adhered thereto. In the figure, reference numeral 35 denotes an inner wall surface of the tunnel, and a distance L between the inner wall surface 35 and the outer peripheral surface of the tubular body 1 is, for example, 50 mm. It is characterized in that the fastener 20 is accommodated in the interval L by reducing the swing range of the claw-equipped arm 4.

FIG. 5 is a mounting view of the lifting tool-cum-guide plate according to the present invention, and shows a lifting-arm-purpose guide plate 12 and a guide plate 11 paired therewith on the upper edge of the lower divided body 3. Since the guide plates 11 and 12 guide each other, the lower end of the upper divided body 2 accurately contacts the upper edge of the lower divided body 3. The lower divided body 3 can be lifted by attaching a shackle (not shown) to the hole 12a of the guide plate 12 that also serves as a hanging tool.

FIG. 6 is an enlarged cross-sectional view of the longitudinal guide plate according to the present invention. The longitudinal guide plate 5 briefly described in FIGS.
6 is an inclined plate as shown in FIG. 6, and is attached to the seal member guide ring 28 by welding as appropriate in this embodiment. When the cylinder 1 is moved to the preceding cylinder 1A as indicated by the arrow, the guide plates 5 can easily align the centers of the cylinders 1 and 1A.

Next, the tubular carrier will be described. FIG. 7 is a side view of a tubular carrier truck according to the present invention. The tubular carrier truck 40 includes a truck frame 41 having a front wheel 42, a middle wheel 43, and a rear wheel 44, and the middle wheel 43 is lifted by a lifting cylinder 45. The distance between the middle wheel 43 and the rear wheel 44 is larger than the length of the cylinder 1, and the front wheel 42 is positioned higher than the rear wheel 44 by a predetermined dimension d. The rear wheels 44 are driving wheels, and the middle wheels 43 and the front wheels 42 are driven wheels. Reference numeral 47 is a forward cockpit and 48 is a reverse cockpit.

FIG. 8 is a view taken in the direction of arrow 8 in FIG. 7, in which the middle wheel 43 is supported by the bogie frame 41 via a turning shaft 49 and is provided with a turning cylinder 51. By pushing the axle 52 with this cylinder 51, , Turning wheels.

FIG. 9 is a front view of a cylindrical carrier truck according to the present invention, in which cylinders 53, 53 for raising and lowering a cylinder, a lifting frame 54, and rollers 55, 55 are provided on the upper surface of a carriage frame 41.
And side support cylinders 56, 56 on the side surface of the bogie frame 41. By pressing the inner peripheral surface of the tubular body 1 with these, the tubular body 1 can be transported in a state of being floated from the ground. Further, 57 and 57 are side guide rollers, which directly contact the inner peripheral surface of the tunnel to prevent the bogie frame 41 from meandering. In the figure, 58 is a traveling motor, 59 is a chain or belt, and 61 is a rear wheel axle.

The operation of the tubular carrier and the installation procedure of the tubular body described above will be described. The divided body 2 described in FIG.
3 is manufactured in a can manufacturing factory. The reason why the cylindrical body 1 is divided is mainly to facilitate transportation. Therefore, if the tubular body 1 has a small diameter, it is not necessary to divide the tubular body 1, and the tubular body 1 can be manufactured in a factory and transported as it is. On the contrary, if the diameter is large, the method of dividing the upper and lower halves of this example is used.
Divide into the above. The number of divisions is arbitrary.

The divided bodies 2 and 3 are transported from the manufacturing plant to the site by transportation means such as a truck. What is important here is that the divided bodies 2 and 3 are assembled outside the existing tunnel, preferably near the entrance and exit, as shown in FIG. 2, and integrated by welding. Generally, a large amount of gas is generated during welding. Outside the tunnel, this gas can be diffused into the atmosphere without the need for special exhaust means. And since it can be welded from the outside of the cylinder 1 and the welding line is a horizontal line,
Does not require advanced welding technology. Therefore, the burden on the operator is small and the assembly cost is low.

When assembling, as a rule, the upper divided body 2 is placed on the lower divided body 3 by a heavy machine such as a recker crane. However, it does not matter to use the tubular carrier 40 for this work. This is because the cylindrical carriage 40 has an elevating cylinder, and can move the upper divided body 2 up and down and carry it. However, there is a risk that the work efficiency will be low because it is an unintended use.

FIGS. 10 (a) to 10 (c) are construction explanatory diagrams (first half) according to the present invention. In (a), the carriage 40 is run toward the assembled cylinder 1 as indicated by the white arrow. At this time, the middle wheels 43 and the rear wheels 44 travel. In (b), the carriage 40 is stopped when the middle wheel 43 passes through the cylinder 1. In (c), the cylinder body lifting cylinders 53, 53 are extended to float the cylinder body 1 above the ground. Then, the vehicle runs as shown by the white arrow and heads for the site in the tunnel 34.

11 (a) to 11 (c) are construction explanatory diagrams (second half) according to the present invention. In (a), the preceding cylinder 1A
If the height difference between the floor of the vehicle and the floor of the tunnel 34 is d1, the height d of the front wheel 42 from the ground shown in FIG.
Set it to 1. Then, when the cylinder 1 is brought close to the preceding cylinder 1A, the front wheel 42 can be easily moved to the preceding cylinder 1A.
Can be placed on. When the front wheel 42 hangs on the preceding cylinder 1A, the traveling of the carriage 40 is stopped, and this time the middle wheel 43
As shown by the white arrow. In (b), the carriage 40 is advanced with the front wheels 42 grounded on the floor of the leading cylinder 1A and the rear wheels 44 grounded on the floor of the tunnel 34. In (c), the tip of the cylinder 1 is brought very close to the rear end of the preceding cylinder 1A,
The traveling of the carriage 40 is stopped. At this time, the longitudinal guide plates 5 ... Described in FIG. 6 perform a centering action.

12 (a) to 12 (d) are explanatory views of the operation of the fastener and the pulling means of the present invention. In FIG. 12 (a), the bolt 6 on the inner side of the tubular body 1 is attached with the nut hook piece 8 as shown by the arrow. Hang on. In (b), the nut 33 is tightened and the cylinder body 1 is drawn toward the preceding cylinder body 1A as indicated by the arrow. Then, the claws 4 a of the arm 4 are connected to the back inclined surface 7 of the claw receiving fitting 7.
bid up a. (C) shows a state in which the claw 4a is properly engaged with the claw receiving metal fitting 7, and thereafter, the leaf spring 23
The claw 4a and the claw receiving fitting 7 are strongly engaged by the repulsive force of the seal member 25.
There is no concern that a will come off from the metal fitting 7. (D) shows the completion of the connecting step, and the pulling means 30 which has finished its function is removed at an appropriate time thereafter. This is because if these are left, dust and foreign matter are likely to be caught.

FIG. 13 shows a cylindrical body according to the present invention (first embodiment).
It is a figure which shows the relationship between a tunnel and a tunnel.
Once installed in place in the tunnel 34,
The unnecessary means inside, such as the pulling means 30 ... And the guide plate 12 also serving as a hanger, are removed. As a general rule, a welder (fillet weld) is ground by a grinder, but gas cutting may be used. Then, if cement is injected into the gap (about 50 mm) between the inner wall surface 35 of the tunnel and the cylinder 1, the tunnel lining work is completed for this part, and the new cylinder 1 is repeated in the same manner. It may be carried in the tunnel 34 and connected.

FIG. 14 is an exploded perspective view of a tunnel lining steel cylinder (second embodiment) according to the present invention, and a tunnel lining steel cylinder 70 (hereinafter abbreviated as "cylinder 70").
Is composed of an upper division 71 having a semicircular cross section and lower divisions 72, 72 having an inverted T shape. On the outer surface of one end of each of the divided bodies 71, 72, 72, a claw-equipped arm 4 ... (... indicates a plurality; hereinafter the same) and a strip-shaped longitudinal guide plate 5 ... Further, the bolt 6 which is a part of the pulling means is provided on the inner surface of the end portion.
... is attached. On the other hand, claw receiving metal fittings 7 ... Are attached to the outer surface of the other end of the divided bodies 71, 72, 72, and nut hook pieces 8 which are a part of pulling means are attached to the inner surface of the end. Furthermore, the guide plate 11
... and a guide plate 12 that also serves as a hanger are attached. Since the arm with claw 4, the longitudinal guide plate 5, the bolt 6, the claw receiving fitting 7, the nut hooking piece 8, the guide plate 11 and the guide plate 12 also serving as a lifting tool are the same as those in the first embodiment, the description of the configuration and the operation is omitted. .

FIG. 15 shows a cylindrical body according to the present invention (second embodiment).
Is a perspective view after assembly, in which the upper divided body 71 is placed on the lower divided bodies 72, 72 and the mating portions are integrated by welding, whereby the inverted U-shaped (horseshoe-shaped) tubular body 70 is completed. To do. FIG. 16 is an enlarged view of the flange portion of the lower divided body of the tubular body (second embodiment) according to the present invention, and shows the flange portion 73 at the lower end of the lower divided body 72. The flange portion 73 includes a flange 74 welded to the lower divided body 72 so as to form an inverted T and a reinforcing plate 75 that reinforces the flange 74, and is attached to the floor of the tunnel 34 by the foundation bolts 76 and 77. Fixed.

FIG. 17 shows a cylindrical body according to the present invention (second embodiment).
It is a figure which shows the relationship between a tunnel and. Outside the tunnel, preferably at the entrance / exit, an inverted U-shaped cylinder 70 shown in FIG. 15 is assembled, and when this cylinder 70 is installed at a predetermined position in the tunnel 34 in the same procedure as in Example 1, the cylinder is The pulling means 30 ... And the lifting / lowering guide plate 12 ... Which are unnecessary objects in 1 are removed. These are, in principle, ground fillet welds with a grinder, but may be gas cut. Then, if cement is injected into the gap (about 50 mm) between the inner wall surface 35 of the tunnel and the tubular body 70, the lining work of the tunnel is completed for this portion, and a new tubular body 70 is repeated in the same manner. It may be carried in the tunnel 34 and connected.

The cylindrical body 70 of the second embodiment is lighter than the cylindrical body 1 of the first embodiment because it has no floor and is suitable for simple repair work. However, if not only the ceiling and side walls of the tunnel but also the floor are damaged, the cylinder 1 of the first embodiment should be used.

Although claim 1 and claim 2 of the present invention are intended for horseshoe-shaped tunnels in principle, circular tunnels, rectangular tunnels, and polygonal tunnels may be used. Similarly, the fasteners according to claims 4 to 6 are used to connect tubular bodies and halved tubular bodies having various cross-sectional shapes. Further, the spring for urging the arm with a claw may be a coil spring or a torsion spring in addition to the leaf spring of this embodiment.

[0035]

The present invention has the following effects due to the above configuration. According to a first aspect of the present invention, a step of bringing in a steel cylinder having a similar cross section to the existing tunnel, which is slightly smaller than the inner wall surface cross section of the existing tunnel, and a connecting step of connecting the cylinder to the preceding cylinder with a mechanical fastener. Line the tunnel. Since welding work inside the tunnel is no longer necessary, there is no need to take measures for gas emission, and construction costs can be reduced. Also,
Since welding can be performed in a place with good conditions, the welding quality is good and the quality of the welded portion can be improved.

According to a second aspect of the present invention, there is provided a step of manufacturing a divided body obtained by dividing a steel cylinder having a similar cross section which is slightly smaller than the inner wall surface cross section of the existing tunnel, and carrying these divided bodies to the entrance and exit of the existing tunnel. A transportation process, a process of assembling the divided bodies by welding outside the existing tunnel, a process of loading the assembled cylinder into the existing tunnel, and connecting this cylinder to the preceding cylinder with mechanical fasteners. The tunnel lining is formed with the connecting process. In addition to the effect of claim 1, the transportation cost can be reduced.

According to a third aspect of the present invention, there is provided a step of manufacturing a divided body obtained by dividing a steel half-cylindrical body having an inverted U-shaped cross section, which is slightly smaller than the inner wall surface cross section of the horseshoe-shaped tunnel, and the division body of the existing tunnel. Carrying process to carry to the entrance / exit, process of assembling the divided bodies by welding outside the existing tunnel, process of carrying the assembled half-divided cylinder of the inverted U-shaped section into the existing tunnel, and this half-divided cylinder The tunnel lining is made up of a connecting step of connecting the first half cylinder to the preceding half cylinder with a mechanical fastener and a fixing step of fixing the lower end of the half cylinder to the floor of the tunnel with a foundation bolt. Since welding work inside the tunnel is no longer necessary, there is no need to take measures for gas emission, and construction costs can be reduced. Moreover, since welding can be performed in a place with good conditions, the welding quality is good and the quality of the welded portion can be improved.

According to a fourth aspect of the present invention, there is provided a fastener for connecting steel cylinders having similar cross sections, which are slightly smaller than the inner wall surface cross section of the existing tunnel, and a claw receiving metal fitting fixed to the outer surface of the end of one cylinder. A steel tube for tunnel lining is composed of an arm with a claw swingably locked to the outer surface of the end of the other cylinder for meshing with the claw receiving fitting, and a spring for urging this arm toward the meshing side. Make up the body fasteners. By urging the pawl attaching arm toward the meshing side with the spring, the next cylinder can be surely connected to the preceding cylinder in the inaccessible space between the inner wall surface of the tunnel and the cylinder. Since the arm with a claw and the like are located outside the cylinder and do not leave obstacles inside the cylinder, it is possible to secure a sufficient effective water flow area. Welding work in the tunnel can be abolished by adopting such a mechanical connector.

A fifth aspect of the present invention is characterized in that a seal member is interposed between the steel cylinders and the seal material is compressed and fixed. The seal member enhances the sealing property, and there is no fear that the fluid inside the cylinder will leak out and the fluid will flow into the cylinder from the outside. Since the sealing material was fixed between the cylinders,
There is no need to worry about the sealing material shifting or protruding, and it is possible to exert the sealing performance for a long time.

According to a sixth aspect of the present invention, a bolt is attached to an inner surface of an end of one steel cylinder, a nut is screwed to the bolt, and the nut is hung on an inner surface of the end of the other steel cylinder. It is characterized in that it is provided with a pulling means capable of narrowing the interval between the cylinders by attaching a piece and tightening the nut. Since the next cylinder can be easily drawn to the preceding cylinder, the construction efficiency can be improved.

According to a seventh aspect of the present invention, there is provided a carrier truck for transporting a steel tube for lining a tunnel in a state of being floated from the ground. The distance between the middle wheel and the rear wheel is set to be larger than the length of the steel cylinder, and the front wheel is set at a predetermined height higher than the rear wheel, and the predetermined size of the cylinder installed in the tunnel. It is characterized by matching the difference between the floor and the tunnel floor. Since the front wheel positioned higher than the rear wheel and the vertically movable middle wheel are provided, it is possible to transport the tubular body in a horizontal state and abut against the preceding tubular body. That is, since the cylinder and the cylinder control device for correcting the inclination of the cylinder are not required, the mechanism of the carriage can be simplified.

[Brief description of drawings]

FIG. 1 is a steel cylinder for tunnel lining according to the present invention (first
Example) exploded perspective view

FIG. 2 is a perspective view of a cylindrical body (first embodiment) according to the present invention after assembly.

FIG. 3 is a perspective view of a fastener for a tubular body according to the present invention.

FIG. 4 is a cross-sectional view showing a fastener, a seal member, and a pulling means for a tubular body according to the present invention.

FIG. 5 is a mounting view of a guide plate for combined use with a hanging tool according to the present invention.

FIG. 6 is an enlarged cross-sectional view of a longitudinal guide plate according to the present invention.

FIG. 7 is a side view of a tubular carrier according to the present invention.

FIG. 8 is a view on arrow 8 of FIG.

FIG. 9 is a front view of a tubular carrier according to the present invention.

FIG. 10 is a construction explanatory view according to the present invention (first half)

FIG. 11 is a construction explanatory view (second half) according to the present invention.

FIG. 12 is an operation explanatory view of the fastener and the pulling means of the present invention.

FIG. 13 is a diagram showing a relationship between a cylinder (first embodiment) and a tunnel according to the present invention.

FIG. 14 is an exploded perspective view of a steel cylinder for tunnel lining according to the present invention (second embodiment).

FIG. 15 is a perspective view of a cylindrical body (second embodiment) according to the present invention after assembling.

FIG. 16 is an enlarged view of a flange portion of a lower divided body of a cylinder body (second embodiment) according to the present invention.

FIG. 17 is a diagram showing a relationship between a cylinder (second embodiment) and a tunnel according to the present invention.

[Explanation of symbols]

1, 70 ... Steel tubing for lining tunnel (cylindrical body), 1A ...
Leading cylinder, 2, 3, 71, 72 ... Divided body, 4 ... Arm with claw, 5 ... Longitudinal guide plate, 6 ... Bolt, 7 ... Claw receiving metal fitting, 8 ... Nut hook piece, 20 ... Fastener (mechanical type) Fasteners, 23 ... Spring (plate spring), 25 ... Seal member, 30 ... Pulling means, 34 ... Tunnel (existing tunnel), 35 ... Tunnel inner wall surface, 40 ... Cylindrical carrier truck, 41 ... Truck frame, 42 ... front wheel, 43 ... middle wheel, 4
4 ... rear wheel, 45 ... lifting cylinder, 74 ... flange, 7
6, 77 ... Foundation bolt.

Front page continuation (72) Inventor Toshikazu Sakumoto 4-5-3 Kitahama, Chuo-ku, Osaka City, Osaka Prefecture Sumitomo Metal Industries Co., Ltd. (72) Teiji Yamashita 1-31, Nakahara, Isogo-ku, Yokohama, Kanagawa No. Sankyo Giken Industry Co., Ltd. (72) Inventor Mitsuhiro Ikeda 2 Dejima Nishimachi, Sakai City, Osaka Prefecture Sumitomo Metals Plantech Co., Ltd.

Claims (7)

[Claims] 1. A step of bringing in a steel cylinder having a similar cross section, which is slightly smaller than the inner wall surface cross section of the existing tunnel, into the existing tunnel, and a connecting step of connecting this cylinder to the preceding cylinder with a mechanical fastener. Tunnel lining method characterized by consisting of. 2. A step of manufacturing divided bodies obtained by dividing a steel cylinder having a similar cross section that is slightly smaller than the inner wall surface section of the existing tunnel, and a transportation step of carrying these divided bodies to the entrance and exit of the existing tunnel. , A step of assembling the divided bodies by welding outside the existing tunnel, a step of loading the assembled tubular body into the existing tunnel, and a connecting step of connecting the tubular body to the preceding tubular body with a mechanical fastener. Tunnel lining method characterized by consisting of. 3. A process of manufacturing a divided body of a steel half-divided cylinder having an inverted U-shaped cross section, which is slightly smaller than the inner wall surface cross section of the horseshoe-shaped tunnel, and carrying these divided bodies to the entrance / exit of the existing tunnel. A carrying step, a step of assembling the divided bodies by welding outside the existing tunnel, and a step of bringing the assembled half-divided cylinder having an inverted U-shaped cross section into the existing tunnel,
It is characterized by a connecting step of connecting this half-divided cylinder to the preceding half-divided cylinder with a mechanical fastener, and a fixing step of fixing the lower end of the half-divided cylinder to the floor of the tunnel with foundation bolts. Tunnel lining method. 4. A fastener for joining steel cylinders having a similar cross section, which is slightly smaller than the inner wall surface cross section of an existing tunnel, wherein the fastener is a claw fixed to the outer surface of the end of one cylinder. It is characterized by comprising a receiving metal fitting, an arm with a pawl swingably locked to the outer surface of the end of the other cylinder for engaging with the pawl receiving metal fitting, and a spring for biasing this arm toward the engaging side. Steel tubular fasteners for lining tunnels. 5. The fastener for a steel cylinder for tunnel lining according to claim 4, wherein a seal member is interposed between the steel cylinders, and the seal material is compressed and fixed. 6. A nut-hanging piece, wherein a bolt is attached to an inner surface of an end of one of the steel cylinders, a nut is screwed to the bolt, and the nut is hung on an inner surface of the end of the other steel cylinder. A fastener for a steel cylinder for tunnel lining according to claim 4 or 5, further comprising a pulling means that is attached and that can tighten the nut to reduce the distance between the cylinders. 7. A transporting vehicle for transporting a steel cylinder for tunnel lining in a state of being floated from the ground, the transporting vehicle including front wheels, middle wheels and rear wheels, the middle wheels being able to be raised and lowered. The distance between the middle wheel and the rear wheel is set to be larger than the length of the steel cylinder, and the front wheel is set at a predetermined height higher than the rear wheel.
A carrier for a steel cylinder for lining a tunnel, characterized in that the predetermined size is matched to the difference between the floor of the cylinder installed in the tunnel and the floor of the tunnel.