JPS6133937B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a trackless piping method within a tunnel.

Currently, concrete tunnels are used as waterways in various places, but water leakage often occurs due to aging due to aging, distortion due to ground movement, etc. As a countermeasure, a new water conveyance pipe is installed inside the tunnel, but in this case, it is possible to construct a pipe with a capacity close to that of the tunnel, that is, a pipe with a diameter closer to the inner diameter of the tunnel, in a short period of time and economically. desired.

Therefore, as shown in Fig. 1, rails 3 are laid on inverted concrete 2 poured at the bottom of a tunnel 1 in the shape of a horseshoe culvert, and a bogie 4 is placed on the rail 3 so that it can run. A construction method (rail construction method) in which new pipes 6 are placed and transported on the operation receiving portions of jacks 5 provided in pairs in each case (rail construction method) has been known. However, with this type of rail construction method, it is necessary to place invert concrete 2 and install and remove the rails 3 before and after piping work, so it takes a long time to complete the work and increases construction costs. Moreover, the casting of invert concrete 2,
Due to the installation of the rails 3 and the height of the bogie 4, the diameter of the new pipe 6 that can be installed is considerably smaller than the inner diameter of the tunnel.

This invention eliminates the drawbacks of the conventional construction methods described above, makes it possible to install piping without placing invert concrete or laying rails within the tunnel, shortens the construction period, and makes construction costs economical. Moreover, it is an object of the present invention to provide a construction method that allows piping with a diameter closer to the tunnel inner diameter.

The above object is achieved by taking the technical measures described in the claims.

Hereinafter, this invention construction method will be explained in detail with reference to embodiments shown in the drawings.

FIG. 2 is a longitudinal sectional front view showing this invention construction method, which corresponds to the conventional construction method shown in FIG. In the same figure, 11
1 is a trolley for transporting a U-shaped inner-faced ductile cast iron pipe as a new pipe 13 into a horseshoe culvert-shaped tunnel 12.As is clear from Figs.
A pair of support rods 14, 14' and this support rod 14, 1
A plurality of supporting rods are installed at predetermined intervals in the length direction between 4', and the side facing the outer peripheral surface of the new pipe 13 is the new pipe 1.
A rectangular truck main body 16 is comprised of support rods 14 and a tube mounting rod 15 curved upward in the direction of 14' so that a tube can be placed thereon. As shown in FIGS. 3 and 5, running rollers 17 and 1 whose outer peripheries are made of hard rubber and whose outer peripheries are formed in the shape of a drum are provided at the lower portions that intersect with the support rods 14 and 14' on both sides of the above-mentioned mounting rods.
7', and a rubber plate 18, which supports the placed new pipe 13 in a fitable manner, is disposed on the crossed upper part.
18' is attached. As shown in FIGS. 3 and 6, horizontal brackets 19 and 19' are protruded from both sides of the front surface of the main body 16 in the running direction, and support rods 20 and 20' are connected to pins 21 and
21', and front guide rollers 22, 22' are disposed at the tips of the support rods 20, 20' so as to be able to approach the tunnel side wall 23. 24, 24'
is a stopper that restricts the rotation of the support rods 20, 20', and these stoppers 24, 24' are the guide rollers 2
Supporting rods 20, 20' with 2, 22' are connected to side walls 23
When opened in the direction, the support rods 20, 20' are located at the chain lines in FIG. When you do this, it will be located on the solid line.
The horizontal brackets 19, 19', the support rods 20,
20', pins 21, 21', guide rollers 22, 2
A guide member is constituted by each member such as 2'.

On the other hand, a rectangular truck frame 26 is fixed to the rear surface of the truck body 16, and the rear end rod 26 of the frame 26
There are support rods 2 on both sides of a as shown in Figures 3 and 7.
7, 27' are provided, and rear guide rollers 28, 28' are provided at the ends of the support rods 27, 27'.
It is located close to 3. The tip of a forked traction rod 29 is pivotally attached to the rear end rod 26a, and the base end of the rod 29 can be attached to and detached from the front plate 31 of a forklift 30 as a truck driving member by means of a mounting pin 32. installed on. In addition, centering jacks 35, 35', 3 as first operating members are provided at the front and rear of the support rods 14, 14' in the truck body.
5'', 35 are installed with their operation receiving parts facing the tube axis direction of the new tube 13. Each jack 3
5, 35', 35'', 35 are operating pumps (not shown) installed in the new pipe 13 via an oil supply hose 36 having a switching valve (not shown), as shown in FIG.
The switching valves are connected to the switching valves, and are configured to be operable individually or in series by operating the switching valves.

The above-mentioned trolley 11 is designed to facilitate temporary pushing of the socket of the trailing new pipe 13a into the socket of the leading new pipe 13b and centering during jointing at the pipe joint location in the tunnel. It is usually slightly lower than the piping level (tunnel center axis).

Next, a construction procedure for piping the new pipe 13 inside the tunnel using the trolley 11 will be explained.

Loading the pipe onto the trolley in the starting shaft (Figs. 8 and 9) The new pipe 13, which has been transported in advance to the vicinity of the starting shaft 38 installed at a suitable location in the tunnel 12, is placed on standby at the bottom of the shaft by a portal crane or a truck (not shown). It is placed on the trolley 11 with a hanging wire so that the socket faces the direction of travel. At this time, centering jacks 35, 35',
35'', 35, the receiving part moved upward thereby once receives the new pipe 13, and after removing the wire, the jacks 35, 35', 35'', 3
Return the receiving part of 5 to the state before operation and place the mounting rod 1.
5 on the rubber plates 18, 18'. Note that the front of the bogie 11 is aligned with the center line of the bogie and the center line of the tunnel.

Transportation and temporary pushing into the tunnel (2nd, 3rd,
(Figures 4 and 10) Before transporting into the tunnel 12, the trolley 11
After opening the support rods 20, 20' toward the side wall 23, the stoppers 24, 24' are rotated downward to restrict the rotation of the support rods in the tube axis direction. , 20', and the rear guide rollers 28, 28' are brought close to the side wall 23 with a small gap therebetween. After that, drive the forklift 30 and drive the trolley 11.
drive forward. Then, the trolley 11 has front guide rollers 22, 22' to ensure directionality during running, and rubber hourglass-shaped running rollers 17, 1.
7' provides stable running performance. Then, the traveling is temporarily stopped at a position where the socket of the transported trailing new pipe 13a approaches the socket of the existing leading new pipe 13b, and the centering jacks 35, 35', 3
5" and 35 to align the pipe axis of the trailing new pipe with the pipe axis of the leading new pipe. After centering, move the trolley 11 again.
move forward and connect the socket of the trailing new pipe 13a to the leading new pipe 1.
Insert it into the socket 3b. Next, as shown in FIG. 10, a slip-out prevention member 43 consisting of a processing rail 40, a processing reinforcing bar (bar) 41, and a lever block 42 is used to connect both pipes 1 during later joining work.
Take measures to prevent 3a and 13b from slipping out.

Pulling out the trolley With the socket of the trailing new pipe 13a placed in the socket of the leading new pipe 13b, operate the rear centering jacks 35'' and 35 of the trolley 11 to bring the trailing new pipe to the position where the trolley 11 can be pulled out. Lift up the inlet side of the tube 13a. Next, as shown in FIG. After installing it via the bases 46, 46' and operating the jacks 45, 45' to temporarily support the insertion side of the new tube 13a, set the rear centering jacks 35, 35' in the state before operation. Return to After that, the trolley 11 is moved backward,
At this time, in order to prevent the front guide rollers 22, 22' from coming into contact with the journal jacks 45, 45', the backward movement of the truck 11 is temporarily stopped before the front guide rollers 22, 22' contact the journal jacks 45, 45'. Then, the stoppers 24, 24' are rotated upward, the rotation restriction of the support rods 20, 20' is released, and the support rods are rotated 90 degrees in the tube axis direction. In this way, when the truck 11 is pulled out, the journal jacks 45, 45' are avoided, and after passing the support rods 20, 20' having the guide rollers 22, 22' are opened again toward the side wall 23. 11 is retreated to the waiting position of the starting shaft 38 in order to transport the next new pipe.

Installation of new pipe (FIG. 12) After the carriage 11 has retreated, a cradle 47 whose level has been adjusted in advance is installed on the bottom of the tunnel below the insertion side of the trailing new pipe 13a. Then, the journal jacks 45, 45' that temporarily support the tube 13a are returned to their pre-operation state, and the support stand 47 on the insertion side of the tube is
It is installed on top with a steady rest member 48 interposed therebetween. If the level of the pedestal 47 is distorted, lift the pipe 13a again using the journal jacks 45, 45' and adjust by laying a liner (not shown) on the pedestal 47. Also, the tube 13a
If the center of the pipe is misaligned from side to side, adjustment is made using a slip-off prevention member 43 installed inside the pipe.

After the above, the journal jack 45, 45'
and remove the bases 46, 46'.

Joining, etc. By operating the slip-off prevention member 43, the trailing new pipe 13a is moved to the predetermined position of the insertion port of the leading new pipe 13b.
to draw in. At this time, when the drawing is completed, it is confirmed that there is no kinks in the centering. Next, as shown in FIG. 13, a journal jack 50 is installed on the inner surface of the leading new pipe 13b on the insertion side using a base 51, and its operation receiving part is placed on the inner surface of the trailing new pipe 13a near the socket. contact via the base 52,
By operating the jack 50, the socket side of the trailing new pipe 13a is lifted and centered while performing joint joining work such as attaching a watertight rubber ring 53 as shown in FIG. 14. Thereafter, when filling the gap between the trailing new pipe 13a and the inner surface of the tunnel near the insertion end of the new pipe 13a with mortar, etc., which will be described later.
2 to 3 pipe floating prevention pieces 49 to prevent floating of the pipe.
Pack individually.

After connecting the trailing new pipe to the leading new pipe and piping as described above, fill the gap between the inner surface of the tunnel and the new pipe with mortar or concrete to secure the new pipe and tunnel together, and complete the piping work. end.

FIG. 15 shows another embodiment of this invention method, and this embodiment shows guide rollers 22, 22' and 28, 2 provided on the cart of the previous embodiment.
The only difference is that, instead of 8', front and rear guide rollers 60, 60' and 61, 61' are removably disposed at the socket and insertion port of the new trailing pipe 13a using mounting members, respectively. The structure and operation of other parts are the same as in the previous embodiment.

As described above, according to this invention, when piping a new pipe into a horseshoe culvert-shaped tunnel, the work such as pouring invert concrete, laying and removing rails, which were indispensable in the past, is completely unnecessary. Not only can the construction period be significantly shortened, but the construction costs can also be significantly reduced. In addition, in the above case, a pair of detachable second
By installing and operating each of the actuating members at the lower corner of the tunnel adjacent to the pair of first bogie members on both sides arranged at the rear of the main body of the bogie, the bogie is carried into the tunnel and the socket is placed first. In order to temporarily support the insertion side of the trailing new pipe inserted into the insertion port of the new pipe, the pull-out operation of the trolley, which is essential to the construction method, can be performed smoothly, efficiently and quickly.Moreover, the second operating member Since the installation location is at the lower corner of the horseshoe culvert-shaped tunnel, installation is easy and temporary support is reliable. Furthermore, since inverted concrete does not have a track height and the vehicle height of the bogie has been made as low as possible to match the tunnel shape, it is possible to install piping with a diameter closer to the tunnel inner diameter, ensuring a water flow rate closer to the tunnel capacity. It has an excellent effect.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal front view of the conventional method, Fig. 2 is a longitudinal front view of the invention method, Fig. 3 is a cross-sectional plan view of the same, Fig. 4 is a longitudinal side view of the same, and Fig. 5 is a longitudinal cross-sectional view of the inventive method. 6 is an enlarged view of the main part taken along line - in Fig. 3, Fig. 7 is an enlarged view of main part taken along - line in Fig. 3, and Figs. 8 to 14 are drawings for explaining the operation. , Figure 8 is a vertical side view of the starting shaft section,
FIG. 9 is a longitudinal sectional front view of the same as above, FIG. 10 is a cross-sectional plan view showing a state in which measures have been taken to prevent the new tube from coming off after the socket of the trailing new tube has been inserted into the socket of the leading new tube, and FIG.
The figures show a drawing when the cart is pulled out, Fig. 12 is a drawing corresponding to Fig. 2 showing the state when the pipe is installed, Fig. 13 is a longitudinal side view showing the state of the joining work, and Fig. 14 is an enlarged sectional view of the joint part. , and FIG. 15 are drawings corresponding to FIG. 2 showing another embodiment of the present invention. 11...Bolly, 12...Tunnel, 13...New pipe, 13a
... Trailing new pipe, 13b... Leading new pipe, 16... Cart body, 17, 17'... Running roller, 22, 22', 2
8, 28'... Guide roller, 30... Forklift, 35, 35', 35'', 35... Centering jack, 45, 45'... Journal jack, 47...
Receiver, 60, 60', 61, 61'...Guide roller.

Claims (1)

[Claims] 1 A method of piping a new pipe into an existing horseshoe culvert-shaped tunnel, in which running rollers that run on the bottom of the tunnel and the new pipe are installed on both front and rear sides of the main body whose upper surface curves upward toward both sides of the tunnel. A trolley on which a first actuating member that can be placed is installed, a driving member for driving the trolley, and a first drive member that is removably installed in the tunnel and that can lift the insertion side of the new pipe and temporarily support it. a pair of second operating members; and a pair of guide members installed on the truck or the new pipe to regulate the position of the truck in both directions; After placing it so that the mouth faces the direction of travel,
The bogie is moved forward into the tunnel by the driving member while regulating both sides with the guide member, and the socket of the trailing new pipe is inserted into the socket of the leading new pipe already installed in the tunnel. Both sides 1 placed at the rear of the main body of the trolley
The pair of first actuating members are operated to lift the insertion side of the new trailing pipe to the position where the cart can be pulled out, and then the second actuating member is adjacent to the pair of first actuating members on both sides arranged at the rear of the main body of the cart. The second actuating member is actuated to temporarily support the insertion side of the trailing new pipe, and then the first actuating member is set to the pre-activated state to drive the bogie. While pulling the trailing new tube backward by moving it backwards and pulling it out, a cradle is installed below the insertion side of the trailing new tube, and then the second actuating member is set to the pre-operation state, and the insertion side of the trailing new tube is placed in the cradle. A trackless piping construction method in a tunnel that is characterized by installation.