JPH0240821B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a moving formwork construction method and an apparatus therefor suitable for constructing concrete walls that protrude in a long vertically inclined manner.

Although labor-saving and efficient mobile formwork construction methods have come to be used in the construction of long concrete structures with the same cross-section, their application is still limited. For example, when constructing a vertically long and sloping wall-shaped concrete structure such as a dam drainage channel, or a structure containing such a structure,
Due to the difficulty of safely and reliably supporting and moving the formwork, the introduction of movable formwork has been abandoned, and the old formwork construction method, in which formwork is assembled and dismantled for each construction section, is being carried out. It is.

As mentioned above, the present invention breaks away from the traditional inefficient formwork construction by hand-assembling and hand-cutting, and achieves labor-saving,
This method aims to realize an efficient mobile formwork construction method, and a horizontal body member is installed on a frame equipped with traveling casters so that it can be raised and lowered freely. Using an adjustable formwork device, when pouring concrete, the pedestal is moved up through the body material relative to the fixed formwork body, and after the poured concrete has hardened, it is placed on top of the concrete. After removing the form body from the mold, the form body is raised relative to the frame via the body material, and the entire body is moved to the back side by the running gear of the frame, and the form is placed on the concrete. It is characterized by fixing the body and repeating the same operation, which eliminates the need for large-scale scaffolding as in the past, and is labor-saving.
Work can be done efficiently and economic efficiency is significantly improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First, a description will be given of the movable formwork device used in carrying out the construction method of the present invention. As shown in FIGS. It is more familiar than C and C.

Frame A has pillars 1a, 1a, 1 arranged on all sides.
b, 1b are connected to each other by beam members 2, 2... to form a frame-shaped body, and on both the front and rear sides of the lower end thereof, there are running wheels 3, 3... that are adjustable in elevation, respectively.
... is provided so as to be able to roll in the front and back direction. And, on the front side of the front struts 1a, 1a and behind the rear struts 1b, 1b, there are struts 1a, 1b, respectively.
Elevating bodies 4a, 4a, 4 that can slide up and down along
b, 4b are attached.

The trunk members B are formed long in the transverse direction of the pedestal A, and are arranged as a pair on the front side and the rear side of the pedestal A, and the intermediate portions thereof are connected to the elevating bodies 4a, 4, respectively.
a, 4b, 4b, and is adapted to be moved up and down together with the elevating bodies 4a, 4b, and both ends thereof protrude outward from the frame A for a long time.

The formwork C is constructed by fixing a weir plate 7 formed in a shape along the construction wall surface to the assembled vertical butterflies 5, 5... and horizontal butterflies 6, 6.... In particular, the front and rear edges of the weir plate 7 are sloped so as to substantially match the slopes of the front and rear edges of the construction wall. Support rods 8, 8 are fixed to the vertical butterflies 5, 5 and protrude long upwards at two intermediate portions of the form body C, and at the upper end of each support rod 8,
A long lateral movement jack 9 is fixed in the transverse direction of the form body B. This lateral movement jack 9 is a conventionally known movement adjustment jack, and is configured to move a pin 11 in the lateral direction by rotating a threaded rod 10.

The above-mentioned formwork bodies C are prepared as a pair of two units,
For example, when constructing two walls at the same time, such as a waterway wall, two pairs are required as shown in FIG. Therefore, each form body C is arranged on each side of the elevating bodies 4a and 4b, and with respect to each of the body members B and B,
It is pivotally mounted and supported via a pin 11 of a lateral displacement jack 9 fixed to the upper end of the support rod 8, and is rotatable along the longitudinal direction of the body member B about this pin 11. Further, the lower end of the tilting rod 12 is pivotally attached to the lower part of the outer formwork body 17 of the pair of formwork bodies C, C.
An adjustment jack 14 is provided at the upper end of the tilting rod 12 along its length, and like the aforementioned jack 9, the pin 16 is adjusted along the length of the tilting rod 12 by rotation of the threaded rod 15. It is starting to be moved. This tilting rod 12 is connected to the pin 16
It is pivotally attached to the outer end of the body member B via the.

Therefore, each formwork body C can be freely rotated as shown by arrow a around the pin 11 at the upper end, and the body can be moved as shown by arrow b by rotating the threaded rod 10 of the lateral movement jack. The movement can be adjusted freely along the longitudinal direction of the material B. In addition, the outer formwork body C
By rotating the threaded rod 15 of the adjustment lever of the tilting rod 12, the distance between the pins 16 and 17 is expanded or contracted, and the tilting can be adjusted around the pin 11.

Each trunk member B fixed to the elevating bodies 4a and 4b includes:
Pulleys 18 and 19 are attached to the upper and lower surfaces near the fixed points, respectively, and the frame A
A pulley 20 is attached to the lower end of the frame A, facing the pulley 19, and each pulley 18 is attached to the upper surface of the frame A.
A drive wheel 22 rotated by a prime mover 21 is attached to a position opposite to the pulleys 18, 1.
9 and 20 and the drive wheel 22 are linked by a chain 23. That is, one end 23 of the chain 23 is attached to the member 24 provided on the beam member 2 directly below the drive wheel 22.
A is fixed, and is wound around the upper pulley 18 of the trunk member B, and the driving wheel 22 is wound around the pulley 22 of the frame A, which extends downward.
0 to the lower pulley 19 of the body material A and the other end 23
b is fixed to the lower end of the frame A. Therefore, if the drive wheel 22 is rotated in the direction of arrow C in FIG. is extended, and the body member B moves upward along the support columns 1a and 1b under the guidance of the elevating bodies 4a and 4b, thereby changing its vertical relative position with the frame A. Conversely, if the drive wheel 22 is rotated in the direction of arrow d, the distance between the drive wheel 22 and the upper pulley 18 will increase, and the distance between the body pulley 20 and the lower pulley 19 will decrease. As a result, the body member B is moved down relative to the frame A. That is, by rotating the drive wheel 22, if frame A is fixed, body material B will move up and down, and if body material B is fixed, frame A will be moved up and down. That's what happens.

In the above embodiment, the prime mover 21 for vertically moving the body member B and the frame A relative to each other is provided by each drive wheel 22.
There are four on each side, but these are two on the front and two on the rear.
Each drive wheel can be shared by a single prime mover, or all drive wheels can be operated by a single prime mover. Further, the jacks used for lateral movement and tilting of the formwork C are not limited to screw type jacks as in the above embodiments, but various types of jacks such as hydraulic jacks may be used.

Next, a method for concrete construction of an inclined wall such as a dam waterway wall using the above-described mobile formwork apparatus of the present invention will be described.

First, the formwork bodies C are arranged at predetermined intervals corresponding to the interval between walls to be constructed and the thickness of the walls. This is done by adjusting the movement of the form body C in the lateral direction with respect to the body material B by operating each lateral movement jack 9. Then, as shown in FIGS. 1 and 2, the lower part of the form body C is fixed using connecting bolts 25 buried in the foundation or existing concrete D. As a result, the pedestal A is supported by the body member B via a hanging mechanism such as the chain 23. Therefore, when the driving wheel 22 is rotated by the prime mover 21 in the direction of the arrow d in FIG. 3, the frame A is raised relative to the body member B as shown in FIGS. 1 and 2. Then, the upper portions of the opposed formwork bodies C, C are connected by connecting bolts 26. In this case, the tilting rod 12 not only rigidly connects each form body C via the body material B, but also
By operating the adjustment jack 15, the form body C
You can adjust the normal alignment of. Next, move the running gear 3 installed on the pedestal A to its handle 3.
a (Figures 2 and 4) to raise it (Figure 5).

In this state, reinforcement is placed between the facing weir plates 7, 7,
When concrete E is poured, needless to say, a terminal formwork (not shown) is attached between the front ends of each pair of formworks C, C by conventionally known means.

After the poured concrete E hardens, longitudinal rails 27, 27 are laid on the upper surface of the concrete E, and the elevated traveling casters 3, 3 are lowered and placed on the rails 27, 27. let and,
The connections between the connecting bolts 25 and 26 and the formwork C are released, and the lateral movement jacks 9 and the adjustment jacks 14 are operated to move the formwork C outward and peel it off from the concrete E. In this state, the form body C and the body material B are suspended on the pedestal A, and the pedestal A
are supported on the rails 27, 27.

Next, the driving wheel 22 is rotated by the prime mover 21 in the direction of arrow C in FIG.
is raised as shown in Figure 6. In this case, the raised position of the form body C is such that the lower part of the form body C overlaps the upper part of the concrete E to some extent. Then, with the form body C in a suspended state, the frame A is moved to the rear (inner side) of the concrete E along the rails 27, 27 as shown in Fig. 7, and the form body C is placed at a predetermined position. reach it.

Next, the lower part of the formwork C is fixed to the previously buried connecting bolt 26, and the lateral movement jack 9 and the adjustment jack 14 are operated to assemble the formwork C into a predetermined state. From here on, the same operations as described above are repeated to proceed with construction.

As explained above, the present invention provides a frame on which a traveling caster is provided with a horizontal body member that is movable up and down,
A movable formwork device is attached to this body material so that the formwork body can be freely adjusted in tilt and lateral movement, and when pouring concrete, the pedestal is raised and lowered relative to the fixed formwork body. After curing, a pedestal is placed on the concrete, and after the form body is removed, the form body is raised relative to the pedestal via the body material, and the entire body is moved to the back of the concrete using the traveling casters of the pedestal. The formwork was then moved to the concrete, and the formwork was fixed to the concrete, and the same operation was repeated thereafter, so transportation equipment such as cranes and transportation equipment required for constructing scaffolding for formwork, assembling and dismantling formwork, etc. Not only does support equipment become unnecessary, but construction can be carried out labor-saving and efficiently without the need for conventional difficult and complicated work such as assembling and dismantling formwork, which is carried out each time construction is carried out. The advantages of the frame construction method are fully utilized, and it has many excellent effects, such as being able to construct vertically inclined and protruding walls extremely economically.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the device of the present invention;
Fig. 2 is a side view of the same, Fig. 3 is an enlarged front view of the main parts, Fig. 4 is a side view of the same, and Figs. 5 to 7 are schematic diagrams showing the order in which construction is carried out using the device of the present invention FIG. A... Frame, B... Trunk material, C... Form body, 1
a, 1b... Support column, 2... Girder material, 3... Traveling gear, 4a, 4b... Lifting body, 7... Shelter plate, 9...
...Lateral movement jack, 12...Tilt rod, 14...Adjustment jack, 18, 19, 20...Pulley, 21...
...Motor, 22...Drive wheel, 23...Chain,
25, 26... Connection bolt, 27... Rail.

Claims (1)

[Scope of Claims] 1. A type in which columns arranged on all sides are connected by girders, and a pedestal is provided with a traveling caster at the lower end, and the upper end is pivoted to a body material provided on the pedestal so as to be able to rise and fall freely. Using a movable formwork device consisting of a frame body, the lower part of the form body is fixed and erected on the existing concrete, and concrete is poured with the frame suspended and supported above the form body. After the concrete has hardened, the pedestal is lowered and placed on the concrete, then the form body is raised to a predetermined height, the pedestal is moved to the back of the concrete, and the lower part of the form is placed at the predetermined position. A moving concrete formwork construction method characterized by repeatedly performing the steps of fixing to the concrete, then moving a frame relative to the formwork to support it above the formwork body, and pouring concrete. 2. A body formed long in the horizontal direction perpendicular to the direction of travel can be moved up and down and fixed to the frame, which is formed into a frame by joining columns and girders arranged on all sides, and has running wheels at the lower end. The upper end of the formwork is formed into a rhombic shape with its front and rear edges tilted so as to correspond almost to the slope of the edge of the wall to be constructed. A moving concrete formwork device, which is adjustable and is also provided with means for fixing it to an existing structure, etc. at the bottom of the formwork.