JPH069106Y2 - Device for receiving tunnel lining element - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides a tunnel lining element, which is used, for example, when constructing a tunnel crossing under a railway or a road, on a starting shaft. , A device for receiving a tunnel lining element received from a crane.

[Conventional technology and its problems] As a method for constructing a tunnel that crosses under a railway or road, instead of the conventional construction method in which the lining body is not divided by the cast-in-place concrete, the sectional shape is changed. A method of construction using a rectangular and long tubular tunnel lining element is known.

A general example of this method will be described with reference to FIG.
First, the starting shaft 1 is excavated in the vicinity of the ground L ₁ where the tunnel is to be constructed, and a tunnel lining tunnel (hereinafter simply referred to as an element) E is formed on the ground of the starting shaft 1 toward the ground L ₁ . Guide frame 2 that determines the direction of travel
After laying, the elements E that hung by a crane 3 disposed on the ground L ₂ separated from the ground L ₁ by starting pit 1 is set to the guide frame 2.

Then, by the propulsion device 4 previously arranged behind the guide frame 2, the element E is pushed horizontally toward the ground L ₁ along the guide frame 2 and press-fitted into the ground L ₁ , while the tip portion of the element E is pushed. Excavator 5 prepared for
By excavating earth and sand by the element E is propelled in the ground L _1, embedded in a state of penetrating the ground L _1.

In this manner, the plurality of elements E are buried in the ground L ₁ in a state of being adjacent to each other in a gate shape, and are connected to each other to form the tunnel lining body E ₁ , and then the tunnel lining body E ₁ is formed. Build a tunnel by excavating and removing the soil inside ₁ .

In the tunnel construction method as described above, the crane 3
In order to set the element E on the guide frame 2 by means of the crane, the central portion of the element E is hung by the crane 3 and the propulsion device 4 is arranged at the rear end of the guide frame 2 (right end in FIG. 8). 4 and the ground L ₁ are hung down on the guide frame 2.

However, in such a method, as described above, since the element E must be hung down on the guide frame 2 beyond the propulsion device 4, the working radius of the crane 3 shown in D of FIG. 8 is very large, For this reason, the crane 3 has to be large and have a large capacity, and there has been a problem that the cost is increased accordingly.

In view of such circumstances, the present invention is to solve the above problem by using some device when setting the element E on the guide frame 2.

[Means for Solving the Problems] The present invention has been made in view of the above circumstances, and is horizontally press-fitted and embedded by a propulsion device along a guide frame installed on a starting shaft to the ground where a tunnel is to be constructed. A tunnel lining element receiving device for receiving a long and hollow tubular tunnel lining element that forms a tunnel lining body on the starting shaft, and is provided integrally with the propulsion device. And the element support frame that receives the element in a horizontal state toward the ground, and the guide frame is erected at the tip of the guide frame with respect to the ground, and the propulsion device is supported in a state where the element is supported by the support frame. An element that, when advanced toward the ground, receives the tip of the element and moves up and down while supporting the tip. It is characterized by comprising a tip supporter.

[Operation] According to the tunnel lining element receiving device of the present invention, the element carried by the crane is mounted on the element support frame integrally provided with the propulsion device for press-fitting the element into the ground, so that the element is grounded. Is supported in a horizontal state toward the front end of the element, and then the forward end of the element is supported by the element front end supporter by advancing the propulsion device.

After this, the element tip is supported and the crane lifts the element slightly, then the propulsion device is retracted to the rear of the element, and then the element tip support and the crane lower the element. It is set in the frame.

By operating the element receiving device of the present invention in this way, when setting the element in the starting shaft by the crane, it does not go over the propulsion device as in the conventional case, but is placed above the propulsion device in front of it. Since the element is mounted on the crane, the maximum working radius of the crane can be small. As a result, the crane can be smaller and have a smaller capacity than before, and the cost required for tunnel construction can be reduced.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

This embodiment is applied to the starting shaft 1 close to the ground L ₁ shown in FIG. 8. Before explaining the element receiving device according to the present invention, first, the guide frame 2 and the propulsion device 4 are described. Will be added.

As shown in FIG. 1, FIG. 3 and FIG. 4, this guide frame 2 includes a plurality of lateral truss-shaped frames 6 and a plurality of laterally-assembled lateral beams 6a which are spaced from each other between the lower beams 6a of the frame 6. It is a substantially U-shaped front view composed of the material 7, and moves in the lateral (width) direction toward the ground L ₁ on the platform 8 which can be moved up and down in the starting shaft 1 by a steel frame or the like. It is laid as possible.

A pair of rails 9 are laid on the cross members 7 of the guide frame 2, and the propulsion device 4 is set along the rails 9 so as to be able to move forward and backward with respect to the ground L ₁ . .

As shown in FIG. 3, the propulsion device 4 includes the rail 9
A pressing plate 12 that abuts a rear end of the element E is fixed to a tip end of a dolly 11 having wheels 10 that roll up, and a pair of jacks 13 for propulsion are provided at a rear part of the dolly 11. .

The jack 13 is configured to expand and contract along the length direction of the rail 9, and a pressure receiving frame 14 that engages with the guide frame 2 and receives the thrust of the jack 13 is fixed to the rear end of the jack 13. .

That is, as shown in FIG. 7, both ends of the pressure receiving frame 14 are retractable pins that engage with locking holes 15 formed inside the respective frames 6 of the guide frame 2 at regular intervals. 16 are provided.

According to this propulsion device 4, in the state where the jack 13 is contracted, the pins 16 provided on the pressure receiving frame 14 are put into the locking holes 15 of the guide frame 2 and engaged with each other, and then the jack 13 is extended. As a result, the pressure receiving frame 14 receives thrust through the pins 16 and the carriage 11 moves forward in the direction of the ground L _{1 by} the stroke of the jack 13.
Is retracted and pulled out from the locking hole 15, the jack 13 is contracted, each pin 16 is engaged with the next locking hole 15, and then the jack 13 is extended, whereby the truck 11 advances again.

In this way, the pin 1 into the locking hole 15 of the guide frame 2
Engagement of 6 → extension of jack 13 → retraction of pin 16 → contraction of jack 13 → engagement of pin 16 to the next locking hole 15,
By repeating such an operation, the propulsion device 4 moves forward in the direction of the ground L ₁ . And at this time, the pressing plate 1 at the tip
If the rear end of the element E is brought into contact with the element 2, the element E is pressed into the ground L ₁ . Note that the propulsion device 4 retracts if the series of operations described above is performed in reverse.

At the front and rear ends of the propelling device 4 on the carriage 11,
Gate-shaped element support frame 1 for receiving the element E
7 and 18 are respectively provided upright, and an element tip end supporter 19 is provided upright at the tip of the guide frame 2 with respect to the ground L _{1. The} element support frames 17 and 18 and the element tip end are provided. Support machine 19
Is configured as the element receiving device 20 of this embodiment.

Of the support frames 17 and 18 provided as the element receiving device 20 on the propulsion device 4, the front element support frame 17 is a horizontal frame between the upper ends of a pair of left and right vertical frames 21 as shown in FIG. 22 is bridged and fixed, and on the upper surface of this horizontal frame 22,
A pair of guides 23 are fixed. Also,
Similarly to the front side, the rear element support frame 18 also has a pair of left and right vertical frames 24, horizontal frames 25, and guides 26, as shown in FIG.

The horizontal frames 22 and 25 of the element support frames 17 and 18 are set at the same level as each other, and the element E is placed on the horizontal frames 22 and 25 with the element E sandwiched between the pair of guides 23 and 26. It is designed to be received and posted. Element E in this state
Takes a horizontal posture toward the ground L ₁ .

The element tip end supporter 19 is shown in FIGS.
As shown in the drawing, a vertical frame 27 is provided upright at the tip of the lower beam 6a on the left and right of the guide frame 2.
And a horizontal frame 28 spanned between these vertical frames 27.

The horizontal frame 28 is slidably attached vertically along the vertical frame 27 via guides 29 attached to both ends of the horizontal frame 28.
Are suspended from the chains 30a of the chain blocks 30 respectively provided on the upper part of the. Then, the chain 30a of each chain block 30 is synchronously moved up and down to move the horizontal frame 2
8 is adapted to slide vertically along the vertical frame 27.

Further, a pair of rollers 31 having the lengthwise direction of the horizontal frame 28 as an axis is rotatably attached to the center of the upper surface of the horizontal frame 28, and the tip of the element E is placed on this. Further, guides 32 that determine the traveling direction of the element E are fixed to both sides thereof.

Then, the procedure of constructing a tunnel on the ground L ₁ using each of the above-described devices will be described, including the operation of the element receiving device 20.

As shown in FIG. 1 (a), after the propulsion device 4 is retracted along the rail 9 and positioned at the rear end thereof, the element E
The element support frame 1 of the element receiving device 20 provided on the propulsion device 4 by the crane 3
Place between 7 and 18. At this time, the center of the element E is located above the propulsion device 4, and the element E is arranged between the pair of guides 23 and 26.

Remove the hook 3a of the crane 3 from the element E,
The element E is supported by the support frames 17 and 18. Then, the propulsion device 4 is moved to the ground L as described above.
₁ , the tip end of the element E is brought closer to the element tip end supporter 19, and the horizontal frame 28 of the element tip end supporter 19 is moved to a height at which the element E is mounted on the roller 31. It is moved by the chain block 30. After that, the propulsion device 4 is further advanced so that the tip of the element E is placed on and supported by the roller 31. (See FIG. 1 (b)) The chain tip 30 of the horizontal frame 28 of the element tip supporter 19 is slightly raised, and the hook 3a of the crane 3 is engaged with the rear end of the element E, and The element E is separated from the element support frames 17 and 18 by slightly hoisting the rear end of the element E. By this, the element E
Of the guide frame 2 at its rear end by the crane 3 and at its tip by the element tip supporter 19.
It will be in a state of being held in a substantially horizontal posture above.

After that, as shown in FIG. 1 (c), the propulsion device 4 is retracted and is arranged behind the element E.

Next, the element E is lowered by lowering the horizontal frame 28 of the element tip supporter 19 and the hook 3a of the crane 3, and the element E is housed in the guide frame 2.

In this state, the propulsion device 4 is advanced to push the pressing plate 12 at the tip.
Abut on the rear end of the element E, and further, the propulsion device 4
Is advanced to press the element E into the ground L ₁ and the earth and sand is excavated by the excavator 5 provided inside the tip of the element E in advance. Thus, the excavator 5 excavates the earth and sand while the element E is pressed into the ground L ₁ by the propulsion device 4, and the element E is penetrated into the ground L ₁ as shown in FIG. 1D. Buried.

When the press-fitting of one element E is completed, the propulsion device 4 is retracted to the position described above, and the guide frame 2 is laterally displaced, and again, on the respective support frames 17 and 18 on the propulsion device 4, the crane is mounted. The element E is mounted by 3. Then, the above-mentioned items are repeated to obtain the element E.
Press fit.

By repeating such a procedure, first of all, the elements E in the horizontally arranged upper part among the elements E to be buried in a gate shape are press-fitted to the shallow position of the ground L ₁ so as to be adjacent to each other.

Next, the table 8 on which the guide frame 2 and the propulsion device 4 are installed is lowered, and the guide frame 2 is installed again thereon. Then, the guide frame 2 is laterally moved to face the ground L ₁ below the element E, which is one end of the shallow position element E press-fitted as described above. Let

After this, the element E is placed on the element support frames 17 and 18 above the propulsion device 4. At this time, the rear end of the element E is close to the ground L ₂ at a position where it does not hit the ground L ₂ , and the center portion of the element E is supported by the element support frames 17, 18.
Support by.

Next, the element E is grounded by the steps L to L.
Press into ₁ . After the press-fitting of the element E is completed, the guide frame 2 is laterally moved to face the ground L ₁ below the element E, which is the other end of the shallow-positioned element E. After that, the element E is press-fitted into the ground L ₁ in the same manner as above.

In this way, while lowering the platform 8 in sequence, the elements E arranged on the left and right are moved from the top to the bottom by the above procedure.
Press-fit into a state where they are lined up next to each other. The state is shown in FIGS. When the press-fitting is completed to the bottom, the element E is press-fitted and buried in the ground L _{1 in} a gate shape and connected to each other to form the tunnel lining body E ₁ .

After forming a tunnel lining member E ₁ thus pressed elements E and is completed, the inside of the sediment of the tunnel lining member E ₁ drilled removed, to build a tunnel.

According to the element receiving device 20 of the present embodiment used in the above method, when the element E is press-fitted into the shallow position of the ground L ₁ , the element E mounted on each of the supporting frames 17 and 18 on the propulsion device 4 is pressed. Is located above the ground L ₂ on which the crane 3 is stopped, so that the propulsion device 4 can be placed on the guide frame 2 with the propulsion device 4 moved to the rearmost position. In this case, Fig. 1 (a)
As shown in FIG. 5, the rear end of the element E is located above the ground L ₂ , and the working radius of the crane 3 at that time is extremely small as indicated by the symbol D ₁ in the figure, and is the smallest among the above steps. Is.

Further, when the element E is placed on each of the support frames 17 and 18 of the propulsion device 4 when the platform 8 is lowered and the element E is press-fitted to the deep position of the ground L ₁ , the rear end is the ground L ₂ Since the element E is arranged at a position close to and without hitting the, the working radius of the crane 3 at this time is D ₂ in FIG. 2A. The working radius D ₂ of the crane 3 at this time is the maximum in the above process.

However, this maximum working radius D ₂ is very small as compared with the working radius D when the guide frame 2 is set over the propulsion device 4 as in the conventional method shown in FIG. 3 is smaller and has a smaller capacity than the conventional one, and the cost can be reduced.

[Effects of the Invention] As described above, the receiving device for the tunnel lining element of the present invention is arranged horizontally with respect to the ground where the tunnel is to be constructed, along the guide frame installed on the starting shaft from the propulsion device. A support device for a tunnel lining element that supports a long and tubular tunnel lining element that forms a tunnel lining body by being press-fitted and embedded on the starting shaft, and is the propulsion device. An element support frame that is integrally provided to receive the element in a horizontal state toward the ground, and is erected at the tip of the guide frame with respect to the ground, and the element is supported by the support frame. When the propulsion device is advanced toward the ground, it receives the tip of the element and moves up and down while supporting the tip. An element tip part supporting machine is provided, wherein the element carried by a crane is placed on the element supporting frame so that the element is supported in a horizontal state toward the ground, and then the propulsion device. By moving forward, the tip of the element is supported by the element tip supporter. After that, the element tip is supported by the crane and the crane is slightly lifted, the propulsion device is retracted to the rear of the element, and then the element tip support and the crane lower the element to guide the element. It is set in the frame. After that, the element is pressed into the ground by advancing the propulsion device and pushing the element.

By operating the element receiving device of the present invention in this way, when setting the element in the starting shaft by the crane, it does not go over the propulsion device as in the conventional case, but is placed above the propulsion device in front of it. Since the element is mounted on the crane, the maximum working radius of the crane can be small. As a result, the crane can be smaller and have a smaller capacity than before, and the cost required for tunnel construction can be reduced.

[Brief description of drawings]

FIGS. 1 to 7 are views showing an embodiment of the present invention, and FIGS. 1 (a) to (d) show an element receiving device using an element receiving device of an embodiment for a shallow position of the ground. 2 is a side view for explaining the process of press-fitting, FIG. 2 (a) to (d) is a side view for explaining the process of press-fitting laterally arranged elements into the ground, and FIG. 3 is a guide rail, FIG. 4 is a side view for explaining the propulsion device and the element tip end supporter, FIG. 4 is a rear view of the rear element support frame, FIG. 5 is a front view of the front element support frame, and FIG. FIG. 7 is a front view of the machine, FIG. 7 is a plan view of a rear end portion of the propulsion device, and FIG. 8 is a side view illustrating a state in which an element is press-fitted into the ground by a conventional method. 1 ... Starting shaft, 2 ... Guide frame, 3 ... Crane, 4 ... Propulsion device, 5 ... Excavator, 17,18 ... Element support frame, 19 ... Element tip end support machine, 20 ... element receiving device, E ...... tunnel lining for elements, _{E 1} ...... tunnel lining member, _{L 1} ......
ground.

Claims (1)

[Scope of utility model registration request] 1. A long hollow tubular body which forms a lining body of a tunnel by being horizontally press-fitted and embedded by a propulsion device along a guide frame installed on a starting shaft to the ground where a tunnel is to be constructed. The tunnel lining element of
A receiving device for a tunnel lining element that is received on the starting shaft, the device being provided integrally with the propulsion device,
An element support frame that is horizontally received toward the ground, and is erected at a tip portion of the guide frame with respect to the ground, and advances the propulsion device toward the ground in a state where the element is supported by the support frame. And a tip end supporter for vertically moving the tip end of the element while supporting the tip end of the element.