JPH0640717Y2 - Primary lining mobile formwork for tunnels - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to a primary lining movable formwork that can be applied to a translational straight-lined lining method in a shield method for tunnel construction. Is.

(Prior Art) Conventionally, the formwork used for the translational direct casting covering method has been a method of assembling and disassembling a panel-type formwork, which depends on human power, so that manual work is possible. As described above, a method has been adopted in which the panel is made lighter and the blocks are divided into many blocks and combined. Figure 12 shows an example of this,
_{A 1, A 2, A 3} , B 1, B 2, a member divided into K-type portion and circumferentially, in order to assemble assembled this, after having prepared a large number of members, much effort and time to assemble dismantling It was taken as a matter of course technical means to spend.

(Problems to be solved by the invention) At the same time, attention is paid to the translational straight-lined lining method in tunnel construction, and at the same time, the problem of poor workability due to the human power dependence of the formwork described in the prior art requires a solution. It has become a point.

An object of the present invention is to provide a technical means for saving labor and efficiency in the moving and assembling and disassembling work of the formwork of the translational direct casting covering method.

(Means for Solving the Problems) This invention is used for a translational direct-casting lining method in a shield construction method or the like, and divides the form into upper and lower parts, and further connects the individual upper and lower parts pivotally supported by connecting pins to each other. In a movable formwork which has a guide rail provided in a formwork made of laminated foam and has means for moving the used formwork, and a movable formwork having a demountable lifting device, cantilevered from the upper part of the lifting device to the excavation side. A demolition carriage capable of successively demolding and delivering the assembled foam through deframe means suspended from the overhanging girders arranged side by side,
The assembled foam is fixed to a deformed figure obtained by squeezing the assembled foam through gauge fittings, and a transporting carriage having a slidable carriage that is slidable forward and backward is provided, and the assembled foam is sequentially transferred to a construction space. Is a mobile formwork for the primary lining for tunnels, in which the formwork is set using the erector of the shield machine.

(Operation) The operation and effect of the present invention will be described with reference to the drawings of the embodiments. The work procedure using the primary lining movable formwork of this invention is
As shown in FIGS. 11 (a) to 11 (l), first, in step 1 of FIG. 11 (a), the demolding carriage 10 located outside the last formwork 1a of the formwork 1 connected in the tunnel is stretched. Top support for beam 12
The main cylinder M of the lifting device 15 is driven to raise 36, and the 36 is set on the ceiling foam 2. In addition, the carrier 11 is made to stand by in the tunnel formed by the formwork 1, while the shield machine K is provided with a shield jack J behind the shield machine K and is dug forward from the formwork 1 via the end plate 35, The next small space construction space R is formed in front of the most advanced formwork 1b. An erector E protruding from the shield machine K into the construction space R is provided.

Next, in step 2 shown in (b), after extending the side cylinder S and setting it on the side foams 3 and 4, after removing all the bolts and pins of the top and side foams 3 and 4, the side cylinder S is removed. Shrink side form 3,4 to unframe.

Next, the gauge metal fitting 27 is set between the side foams 3 and 4, the main cylinder M is driven to lower the elevating device 15, the ceiling foam 2 is lowered, and the laminated foam 6 is unframed as a squeezed deformed figure.

Next, in step 3 shown in FIG. 3C, the carriage 11 is moved rearward by the hydraulic motor O, the chain block B is set on the invert form 7, and the frame is deframed. When in the frame state, the gauge metal fittings 26 are set between the left and right invert foams 7, and the chain block B is continuously operated to lift the assembled foam 7 in a compressed and demolded state.

Next, in step 4 shown in FIG.
And set it inside the last formwork 1a, and then slide the slide carriage 24 on the carriage 11 to the rear to remove it.
The invert form 7 in a state of being lifted up by 10 and extended in the mold 1a is lowered onto the slide carriage 24 and locked, and then the chain block B is removed.

Next, in step 5 shown in FIG.
And the assembled foam 6 is extended to the inside of the last formwork 1a. On the other hand, by manual running on the guide rails 9 provided in the tunnels of the formwork 1 in which the carriages 11 are continuously provided (for the conditions of large section, (In the case, a self-propelled device with an electric motor is attached for power traveling.) After moving to the front and reaching the most advanced formwork 1b, the electric winch W provided on the slide carriage 24 was operated and stretched. The slide carriage 24 is extended from the carriage 11 through the moving cable 34 to the front construction space R, and the invert form 7 fixed on the slide carriage 24 is lifted by the erector E of the shield machine K.

Next, in step 6 shown in (f), the invert form 7 hung by the erector E is set in the construction space R, while the carrier 11 moves the tunnel of the formwork 1 backward along the guide rail 9. , While moving to the rearmost formwork 1a, the slide carriage 24 that has overhanged is also retracted so that the support frame 25 comes on the carrier carriage 11, while the overhanging girder 12 of the demolding carriage 10
Formed foam 6 suspended in the middle part 14 of
Inside, the main cylinder M is lowered to transport the carriage.
Set to 11, remove the side cylinder S, and further lower the main cylinder M to the lowered position.

Next, in step 7 shown in FIG.
After transferring the assembled foam 6 set to No. 1 and reaching the inside of the most advanced formwork 1b as in the case of the invert form 7 above, slide the slide cart 24 so as to project to the construction space R, and then hit the shield machine K. The erector E is installed to hang the top / side foams 2, 3 and 4.

Next, in step 8 shown in (h), the ceiling / side foams 2, 3, 4 hung on the erector E are installed in the construction space R.
At the installation position of the formwork 1, the assembling and assembling work is carried out on the upper part of the invert form 7. On the other hand, the carriage 11 is evacuated in the continuous formwork 1 and transferred to the rear.

Finally, in step 9 shown in (r), the gable plate 35 is set in the formwork 1 installed in the construction space R, and after placing the concrete C, the concrete placing is carried out as indicated by the diagonal lines. Complete one cycle of the work procedure.

As explained above, the progress of construction by the continuous recycling method of the formwork that sequentially constructs the concrete wall by the translational direct lining method in the small space construction space formed by the excavation of the shield machine. The action and effect of the movable formwork for the primary lining for tunnels of the present invention, which enables the above, brings about remarkable labor saving and efficiency improvement by workability improvement.

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

FIG. 1 shows a movable form 1 of the present invention.

The specifications of the formwork are that the finished diameter is 2500 grits and the span of the formwork is 750 grits, and the formwork is symmetrically formed with respect to the vertical centerline CC of the tunnel. 2 One piece and left and right side foam 3,4 Each one piece is integrated with connecting pin 5 Form 6 and Invert form with connecting pin 5 on the vertical center line CC The foam 7 is formed so that it can be squeezed from both left and right sides. Side form 3,4 and Invert form 7
The joint portion 8 is a slant joint in consideration of the demolding direction. It should be noted that groove-shaped guide rails 9 facing each other are provided inside the left and right sides of the invert form 7.

2 to 4 illustrate the operation of the main parts when the movable form 1 of the present invention is installed in a tunnel excavation construction site.

The movable formwork 1 is provided with a demolding trolley 10 and a transport trolley 11,
FIGS. 5 and 6 show the demounting carriage 10, and FIGS. 7 to 10 show the transport carriage 11. It should be noted that FIG. 11 illustrates the work procedure using the movable mold 1 in sequence.

In FIG. 2, a small-interval span-length formwork 1 is continuously installed in a tunnel surrounded by cast concrete C, and the overhanging girder of the removal cart 10 is mounted on the last formwork 1a where the concrete has been cured.
At the tip portion 13 of 12 is shown a state in which the invert form 7 hung by the chain block B is set in a deformed form, and at this time, in the middle portion 14 of the overhang girder 12, the top and side foams 2, 3, 4 are formed. The assembled foam 6 is unframed and then suspended via the side cylinder S. As shown in FIG. 5 and FIG. 6, the demolding cart 10 has the above-mentioned overhanging girders 12 arranged in a cantilever manner on the right and left sides on the tunnel excavation side, respectively. Block B is installed to unframe the invert form 7, and side foam is attached to the middle part 14 of the overhang girder 12.
One hydraulic cylinder (side cylinder S) is installed on each of the left and right sides to remove the frames of 3,4. The overhanging girder 12 is erected on the upper part of a gate-shaped lifting device 15 composed of four main cylinders M, and is formed so as to be vertically movable. At the bottom of the main cylinder M, a total of four horizontal feeds 16 are provided for fine adjustment in the horizontal direction, and two rods before and after the horizontal feeds 16 are provided with connecting rods 17 so that the actions on the left and right sides are synchronized. A hydraulic motor O is provided to rotate the rubber winding roller 18 for the movement of the demolding carriage 10, and is used as driving means 19 for traveling in the tunnel.

On the other hand, in order to correct the rolling (direction correction) of the bogie 10 described above, the center pin 21 is provided at the center of the roller mounting girder 20 in front of the bogie.
The steering hydraulic cylinder St can be provided and rotated about the center pin 21. A hydraulic unit U is mounted on the rear portion of the demolding carriage 10 to form an operation source for each hydraulic device.

Next, as shown in FIG. 3, the carriage 11 installed in the connected formwork 1 is mounted on the guide rails 9 projecting from the left and right sides of the invert form 7 of the formwork 1, as shown in FIG. Through a gauge bracket 26 that connects the left and right sides of the inverted form 7 in a demolded form compressed by a support frame 25 of a slide cart 24 provided on a cart frame 23 provided with a single brim roller 22. Be locked.

On the other hand, the side foams 3 and 4 of the laminated foam 6 including the top and side foams 2, 3 and 4 are squeezed inward, fixed in the same manner through the gauge fittings 27, and then locked to the support frame 25. FIG. 4 shows that, in order to squeeze the laminated foam 7 of the invert foam and the laminated foam 6 of the top / side foams 2, 3 and 4 into the above-mentioned state, the chain block B and the side cylinder S provided on the overhang girder 12 respectively It indicates that it has been set.

FIGS. 7 to 10 show a carriage 11 which is provided with a single collar roller 22 at both ends and is formed short in the traveling direction.
On the slide carriage 24 of the frame, the pressing metal fittings 28 facing each other on the frame of 23 are arranged side by side, and the I-shaped support girders 30 fitted in the guide grooves 29 formed therein are formed longitudinally in the left and right traveling directions. As shown in Fig. 9, a support girder is provided on the side of the carriage 11 that extends forward.
A support frame 25 that is perpendicular to 30
A slide carriage 24 that can lock 6 and 7 is provided. FIG. 7 shows a state in which the slide carriage 24 is slid rearward with respect to the carrier carriage 11. As shown in FIG. 8, a pulley 32 and a rear frame 33 provided at the center of the front frame 31 of the slide carriage 24. The moving cable 34 is stretched between the electric winches W provided in the central portion, both ends thereof are connected to the front and rear ends of the carriage 11, and the electric winches W are operated to move the slide carriage 24 back and forth on the carriage 11. Arrow X
The support frame is slidably extended or retracted as shown in
After projecting the assembled foams 6 and 7 locked to 25 into the construction space R formed by excavating the shield machine K as shown in FIG. 2 as shown by the imaginary line, project from the rear part of the shield machine K. Erector E for set foam
After assembly and installation by, slide carriage 24 is pulled back to its original position. On the shield machine K side of the construction space R, the gable plate
35 is set, and if necessary, a reinforcing bar T is pre-assembled and inserted into a construction space R formed by the ground G and the form 1b as shown by an imaginary line, and then concrete C is poured. The carriage 11 is driven manually because the weight of the assembled foams 6, 7 to be locked is light. However, an electric motor type self-propelled device may be provided when the formwork has a large cross section.
About the electric winch W of the slide cart 24 on the upper part of the cart,
It is assumed that the power source is a plug-in type cabtyre from the demolding dolly 10 or the shield machine K, and the treatment of the cabtyre while the transporting dolly 11 is moving is considered.

The support frame 25 of the assembled foams 6, 7 of the slide cart 24 is formed so as to be compatible with the deformed shapes of the invert foam 7 and the side foams 3, 4 and can be used in common.

(Effect of the Invention) Since the present invention has the above-mentioned configuration, it has the following advantages.

(1) The labor saving and the efficiency improvement of the means for cyclically using the formwork associated with the tunnel excavation can be remarkably improved by a simple configuration.

(2) A slide cart is installed on the carriage so that the form can be set using the erector of the shield machine, and the demolded form can be easily inserted into the construction space and pulled back to the original position. It is easy to move the formwork into the construction space where there is no inner guide rail.

(3) A deframer is suspended from a projecting girder protruding from the upper part of the lifting device, and the upper and lower divided laminated foams are successively demolded. Workability is good because it can be stopped and is easily configured to be handed over from the detachable dolly to the transport dolly.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view for explaining the main parts of a primary lining mobile formwork for a tunnel according to the present invention, and FIG. 2 is a side view of a construction tunnel in which a mobile formwork is installed. The figure shows the cross section of the main part of the invert form carried from the center line CC to the left half and the top / side form carried to the right half, and Fig. 4 shows the deformed form of the invert form from the center line CC to the left half, right. Half of the top and side foams are a cross-sectional view for explaining the main parts of the demolded figure, FIG. 5 is a side view for explaining the main parts of the demolding carriage, FIG. 6 is a front view for explaining the main parts of the demolding carriage, and FIG. Fig. 8 is a plan view showing the main part of the trolley, Fig. 8 is a side view showing the main part of the trolley, Fig. 9 is a plan view showing the main part of the slide trolley extending from the trolley, and Fig. 10 is a main part of the trolley. Explanatory front view, Fig. 11 is a work procedure explanatory diagram of the translational direct-casting lining method using a movable form, (a) is step 1, (b) is Step 2, (c) drawing step 3, (d) shows the step 4, (e) shows the step 5, (f) shows the step 6,
(G) figure is step 7, (H) figure is step 8, (ri)
FIG. 9 is a step 9 and FIG. 12 is a front view for explaining an essential part of a conventional primary lining formwork. (Explanation of symbols of main parts) 1 ... Formwork, 5 ... Connecting pin 6 ... Assembled form (top), 7 ... Assembled form (bottom) 9 …… Guide rail, 10 …… Deformation cart 11… … Carriage truck, 12 …… Overhang girder 13 …… Tip, 14 …… Intermediate part 15 …… Lift device, 24 …… Slide cart 25 …… Support frame, 26 …… Gauge bracket (top) 27 …… Gauge Metal fitting (bottom), R …… Construction space M …… Shield machine, E …… Electa

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Creator Takaho Hosaki 220 Wakamatsu, Ibikawa-cho, Ibi-gun, Gifu Prefecture (56) References JP-A-56-77499 (JP, A) JP-A-62-153499 (JP, A) ) JP-A-58-62294 (JP, A)

Claims (3)

[Scope of utility model registration request] 1. A structure for use in a translational direct casting lining method in a shield construction method, in which a formwork (1) is divided into upper and lower parts, and each of which is pivotally supported by a connecting pin (5) so that it can be squeezed. In a mobile formwork having a guide rail (9) provided in a formwork (1) made of foam (6, 7) and provided with means for moving the used formwork, and having a lifting device (15) capable of demolding, Overhanging girders (12) protruding in a cantilever shape from the upper part of the device (15) are juxtaposed, and the assembled foam (6, 6) is provided via a frame removing means suspended from the overhanging girders (12). Deformation dolly (10) capable of sequentially delivering and removing the 7) and the assembled foam (6, 7) squeezed through the gauge fittings (26, 27) to fix the deformed figure and lock it. The assembled foam (6, 7) is provided with a transport carriage (11) in which a slide carriage (24) is slidably mounted back and forth, and sequentially transferred to a construction space (R). Shield machines (M) mold using an erector (E) (1) tunnel for one and performing a set primary lining movable mold. 2. A frame block (B) is suspended from the tip portion (13) of the overhanging girder (12), and a side cylinder (S) is suspended from the intermediate portion (14) to deframe the assembled foam (6, 7). The primary lining movable formwork for a tunnel according to claim 1, which is a means. 3. The slide carriage (24) has a laminated foam (6,
The support frame (25) that holds 7) is slidably mounted on the carrier cart (11) so that a framework that is cantilevered from the carrier cart (11) to the excavation side can be slidably installed. The primary lining movable formwork for a tunnel according to claim 1, wherein the laminated foam (6, 7) is formed in (R) so that it can be inserted and withdrawn.