JPH0254097A - Tunnel lining concrete placing side mold device - Google Patents

Abstract

PURPOSE:To facilitate assembling and disassembling by supporting a plurality of side molds telescopically on a mold bearing base erected on a mold fixing base, and by arranging closing plates set internally in the internal cavity sections of the respective confronted sections of the adjacent side molds, to be freely exposed or concealed. CONSTITUTION:A mold bearing base 3 connected to a mold fixing base 2 set on a tunnel mold trestle 1, with a pair of parallel arms 4 is composed to be horizontally moved by a mold moving jack 5. Besides, with the base 3, a plurality of side molds 6 assembled in the shape of a block are assembled by a hydraulic jack 7, and on the confronted sections of the molds 6, closing plates 8 are internally fitted to be freely exposed or concealed. After the centre of a tunnel is assembled, the molds 6 are assembled in a space between the centre and natural ground 9, and in a space between the adjacent molds 6, the plates 8 are permitted to slide, and the space is closed, and the plates 8 are moved into the molds 6 and are removed from the molds and are disassembled. Accordingly, assembling or disassembling can be facilitated.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a gable for placing tunnel lining concrete, which is used for closing an opening in the gable side direction when assembling formwork for concrete lining of a tunnel. This relates to formwork equipment.

(Prior art) Conventionally, in the assembly of formwork for concrete pouring in tunnel and shield tunnel construction, it has been common to use wooden frames or elastic tubes such as rubber tubes for the formwork in the direction of the end frame. .

Fig. 6 shows a conventional formwork assembling device in the gable direction, in which (a) shows a sheet pile supported on a formwork pedestal, etc.; The gable formwork is assembled using a fixing jig for the sheet piles, which is spanned between the same retaining materials.

In the figure, (e) is the plate material that forms the gap between the other pile and the formwork, and (f)
is the ground.

(Problems to be Solved by the Invention) In the conventional gable formwork, sealing the gap between the formwork and the ground takes time and is a difficult task depending on the location.

The present invention has been proposed in view of the problems of the above-mentioned prior art, and its purpose is to be able to freely respond to the unevenness of other mountains facing the formwork, and to enable It is an object of the present invention to provide a formwork device for pouring concrete for tunnel lining, which allows assembly and dismantling of the frame to be carried out easily and quickly.

(Means for Solving the Problem) In order to achieve the above-mentioned object, the gable formwork device for pouring concrete for tunnel lining according to the present invention has a formwork support stand erected on a formwork fixing stand. A plurality of gable forms assembled in a shape are supported in a telescopic manner, and a plate for closing the gap between the gable forms is slidably retractable from each opposing portion of the gable forms. It is equipped with a special interior design.

(Function) Since the present invention is constructed as described above, after assembling the center of the tunnel, the plurality of gable molds that are supported by the formwork support stand erected on the formwork fixing stand and assembled in a block shape. The frame is assembled to expand and contract in response to the unevenness of other mountains and eliminate gaps between them and the ground.

Then, the gap created between the end forms assembled in a block shape is moved by moving a closing plate that is slidably installed so that it can move in and out of the opposing end forms across the gap. and close the gap.

Next, when the formwork is dismantled, the closing plate is moved into the adjacent end formworks, and each end formwork is returned to the formwork fixing base.

(Example) The present invention will be described below with reference to the illustrated embodiments.

(1) is a tunnel formwork pedestal, (2) is a formwork fixing stand installed on the same pedestal (1), and a formwork support stand (2) is attached to the same fixing stand (2).
3) are connected by a pair of parallel arms (4) for lateral movement parallel to each other via bins, and a hydraulic jack (5) for moving the formwork whose negative end is connected to the formwork support stand (3). By retreating, the formwork support (3) is configured to move laterally.

A plurality of end formworks (6) assembled in a block shape on the formwork support stand (3) are extendable and retractable by hydraulic jacks (7) and other sliding mechanisms built into the formwork support stand (3). It is assembled.

A plate (8) for closing the gap between the end wall frames is slidably installed in the inner cavity provided in the opposing portions of the adjacent end wall frames (6) so as to be able to come out and go in and out.

Since the illustrated embodiment is constructed as described above, after assembling the center of the tunnel, each of the gable forms (6) is moved via a hydraulic jack (7) toward the other mountain (9), Assemble so that there is no gap between the center and the ground (9).

At this time, the gap (1
0), by sliding the closing plate (8) installed in the opposing part of the gable formwork (6) by hydraulic operation or manual operation,
The gap (10) is closed.

Next, when dismantling the formwork, the closing plate (8) is retracted into the inner cavity of the original end formwork (6), and then the end formwork (6) is retracted into the inner cavity of the end formwork (6).
) is retracted via the hydraulic jack (7), and the parallel arm (4) is moved outwardly by the hydraulic jack (5) to separate and remove the entire formwork from the poured concrete.

(Effects of the Invention) As described above, the present invention provides a structure in which each end of a plurality of end forms assembled in a block shape is By installing sliding plates in each opposing part of the gable formwork so that they can move in and out of the gap between the gable formworks, it is possible to prevent irregularities in the ground facing the formwork in the direction of the gable side. The gable formwork can be assembled easily and quickly so that it can freely respond to the user's needs, and gaps created during assembly can be easily closed.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the gable formwork device for pouring concrete for tunnel lining according to the present invention, Fig. 2 is an enlarged view of part ① in Fig. 1, and Fig. 3 is an enlarged view of part A plan view, Fig. 4 is a side view showing the gable formwork moving device, and Fig. 5 is a portion of Fig. 4.
FIG. 6 is a front view of the conventional device. (2)-Formwork fixing base, (3)-Formwork support base, (6
)... Gable formwork, (7) - Hydraulic jack, (8
)...Plate for closing the gap between the gable wall frames. Agent: Patent attorney Shige Okamoto (2 persons) Fig. 3

Claims (1)

[Claims] A plurality of gable formworks assembled in a block shape are telescopically supported on a formwork support stand erected on a formwork fixing base. A gable formwork device for pouring concrete for tunnel lining, characterized in that a board for closing the formwork gap is slidably installed so that it can come in and out freely.