JPH04202968A - Formwork panel for concrete outer wall and assembling method of formwork therewith - Google Patents

Abstract

PURPOSE:To improve the workability by forming a formwork panel through projecting reinforcing rods in the vertical direction from the upper end and the lower end of a sheeting, lapping the end parts of the reinforcing rods with the concrete construction joint faces of upper and lower floors, and thus assembling a formwork. CONSTITUTION:A formwork panel is formed by providing and fixing a plurality of aluminum reinforcing rods 2 along a sheeting 1 made of a veneered plate in the up and down direction. The upper end part 2a and the lower end part 2b of the reinforcing rod 2 are projected by a fixed dimension from the upper and lower ends of the sheeting 1 and fixed. The projecting parts of the reinforcing rods 2 are lapped with concrete construction joint faces of upper and lower floors to assemble the formwork. Hereby, the assembling work can be performed simply and efficiently.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for forming surrounding external walls on each floor of a concrete building, especially by making the outer formwork easily and easily disassembled. This invention relates to a formwork panel for concrete exterior walls that aims to improve the safety and efficiency of assembly work, and a method of assembling formwork using the panel.

[Conventional technology]

Generally, when constructing a multi-story concrete structure such as a building, the inner walls for partitions on each floor are constructed by framing a pair of baffle-shaped formwork on the floor with an interval equal to the thickness of the wall, and pouring concrete between them. Is going. At this time, the lower end of the form must be firmly fixed to the floor so that it can withstand the pressure of the poured concrete.

However, in order to construct the so-called external wall around the building, the lower end of the outer formwork of the pair of baffle-shaped formworks protrudes outside the building, so the floor F is usually supported as shown in Fig. 6. A plurality of supporting metal fittings 20 in the shape of "1" are fixed to the outer wall surface of the concrete beam H using separators protruding from the concrete wall surface, and a square lumber 21 serving as a foundation is horizontally fixed on each of the supporting metal fittings 20, and the lower end is nailed to the square lumber 21. The bubble-shaped formwork 22 is vertically supported and fixed to form a framework, and the formwork 22 on one side is erected parallel to the outside formwork 22 on the floor F, and both molds are Concrete is poured between the frames 22 and 22. After pouring the concrete, the frame is removed, the square timbers 21 and the supporting metal fittings 20 are removed, and the same work is repeated on the upper floor to build a concrete outer wall one by one.

[Problem to be solved by the invention]

In this conventional construction method, multiple supporting metal fittings are fixed to concrete beams on the outside of a building that has no support, then a foundation is built by laying square timbers horizontally, and panel formwork is fixed to the square timbers. Preparatory work such as this is necessary to support the formwork, and furthermore, after concrete pouring, it is necessary to perform troublesome work to remove these items when removing the formwork. Moreover, since the same work was performed on each floor, it was not possible to improve work efficiency.

[Means to solve the problem]

Therefore, the formwork baffle for concrete external walls of the present invention and the formwork assembly method using the panel thereof solve the above problems, and in order to improve work efficiency, the baffle is designed to improve the space between the floors of each floor of a concrete building. On one side of a rectangular plywood board with a height dimension shorter than the distance, a plurality of aluminum Va strength bars are attached and fixed in parallel along the longitudinal direction including both edges, and the top and bottom of each aluminum reinforcing bar is fixed. A formwork panel for a concrete external wall is constructed by making the end portions protrude by a desired length from the upper and lower edges of the plywood board, respectively, and a lower flexible baffle is formed by cutting a plywood board having the same shape as the plywood board in the longitudinal direction to a width of the desired dimension. The lower flexible panel is made horizontally long and vertical, and the upper edge thereof is fixed to the outer wall surface of the concrete beam so that it is aligned with the upper surface of the floor, and the lower edge of the plywood board is placed on the upper edge of the lower flexible panel. The concrete external wall formwork panel is vertically erected and fixed, and then the plywood board is longitudinally stretched with a width equal to the distance between the upper edge of the plywood board of the concrete external wall formwork panel and the top surface of the floor of the upper floor. The upper flexible panel is cut along the line to form an upper flexible puffle, and the upper flexible panel is placed horizontally and vertically on the upper edge of the plywood board of the concrete external wall formwork panel, and the upper end of the plywood board of the concrete external wall formwork panel is placed horizontally and vertically. A formwork is formed by integrally forming a frame with each aluminum reinforcing rod that protrudes upward from the edge, and after concrete is poured and hardened, the upper flexible panel is not removed from the concrete exterior wall surface, but only the concrete exterior wall panel is removed. The concrete exterior wall panel was lifted to the upper floor, and the lower edge of the plywood board was placed on the upper edge of the upper flexible panel, and the frame was vertically erected, so that the formwork for each floor could be framed in turn using the same procedure. .

[Effect]

A plurality of aluminum reinforcing rods are attached and fixed in parallel along the longitudinal direction to one side of a rectangular plywood board with a height dimension shorter than the distance between the floors of each floor of a concrete building, including both edges. A concrete external wall formwork panel is formed by making the upper and lower ends of each of the aluminum reinforcing rods protrude by a desired distance from the upper and lower edges of the plywood board, respectively.

Then, a plywood board having the same shape as the plywood board is cut along the longitudinal direction with a radius of a desired size to form a lower flexible panel,
The lower flexible panel is made horizontally long and vertical, and the upper edge is fixed to the external wall surface of the concrete beam so that it is aligned with the top surface of the floor.The lower edge of the plywood board is placed on the upper edge of the lower flexible panel, and the lower edge of the plywood board is placed on the upper edge of the lower flexible panel. The formwork panels are fixed vertically,
Next, the plywood board is cut in the longitudinal direction with a width equal to the distance between the upper edge of the plywood board of the concrete external wall formwork panel and the top surface of the floor of the upper floor to form an upper flexible panel,
The upper flexible panel is placed horizontally and vertically on the upper edge of the plywood board of the concrete outer wall formwork panel, and is integrated with each aluminum reinforcing rod that protrudes upward from the upper end edge of the plywood board of the concrete outer wall formwork panel. After forming a formwork and pouring concrete and hardening, the upper flexible panel is not removed from the concrete exterior wall surface, only the concrete exterior wall panel is removed and lifted to the upper floor, and the concrete exterior wall panel is attached to the lower end of the plywood board. By placing the edge on the upper end edge of the upper flexible baffle and standing vertically to form a frame, the formwork for each floor was successively framed in the same procedure.

〔Example〕

EMBODIMENT OF THE INVENTION Below, the assembly method of the formwork using the formwork panel for concrete external walls of this invention and its paul will be demonstrated with drawing.

Fig. 1 shows a concrete external wall formwork panel of the present invention, in which, for example, four aluminum reinforcing rods 2 are attached in parallel along the longitudinal direction to one side of a plywood board 1 with a length of 180 α and a width of 60 CII+, including both edges. At the same time, the upper and lower ends 2a and 2b of each aluminum reinforcing rod 2 are attached to the plywood plate 1, respectively.
The desired dimensions, for example, 50 cm at the upper end and 25 cffI at the lower end, are made to protrude from the upper and lower edges. Although the vertical dimension of the plywood board 1 is not limited to a certain length,
The length should be at least several tens shorter than the distance between the floors of each floor of a concrete building, and each aluminum reinforcing rod 2 should be several tens of inches longer. In addition, aluminum reinforcing rods 2 located on both side edges
．． 2 is provided with a plurality of rows of through holes 4, through which connecting fittings 3 are inserted, arranged at equal intervals in order to connect the horizontally connected concrete outer wall form baffles.

Next, a construction method for assembling an external wall formwork using the concrete external wall formwork panel will be described.

FIG. 2 shows a cross section of a certain floor of the building, where the beam H at the corner of the floor F is made of concrete, and one end of a plurality of separators 7 protrudes from the outer wall surface 5. As shown in FIG. 4, the separator 7 has a rod-shaped body 8 with threaded grooves 9.9 cut into both ends thereof, and a collar portion 10.10 provided inside the threaded grooves 9.9. Further, Il, 11 is a nut that is screwed into the threaded grooves 9, 9, and a pair of strips 1 with through holes 12 are formed.
3. ] Fix 3. 14 is a pattern that is inserted into each through hole 12.

Then, a separately prepared plywood board 1 having the same shape as the plywood board 1 was cut along the longitudinal direction to have approximately the same width as the dimension of the portion of each aluminum reinforcing rod 2 protruding from the lower edge of the formwork pallet Z for concrete external walls. A lower flexible panel 15 is formed, and the lower flexible panel 15 is made horizontally long and vertical, and its upper edge is aligned with the floor F.
The plurality of separators 7 are skewered and applied to the outer wall surface 5 of the beam H so as to match the upper surface of the separators 7.

Then, with the plywood board 1 placed inside and its lower end placed on the upper edge of the flexible panel 15, the concrete external wall formwork panel is vertically erected. Furthermore, the oak Ml is attached to the helical groove 9 of the separator 7, and the horizontal bar 16 is brought into contact with each aluminum reinforcing rod 2, interposed between the strips 13 and 13, and the wedge 14 is inserted into each through hole 12. 12, the lower flexible panel 15 and concrete outer wall form baffle are firmly fixed to the outer wall surface 5 as one body.

Next, the plywood board is cut along the longitudinal direction with a width equal to the distance between the upper end edge of the plywood board 1 of the concrete external wall formwork panel to be erected and the top surface of the floor F on the -F floor, and the upper flexible baffle is cut. 17 is formed and placed horizontally and vertically on the upper edge of the plywood board 1 of the concrete external wall formwork panel, and is passed through the thread groove 9 of the separator 7. Further, a crossbar 16 is horizontally attached to each aluminum reinforcing rod 2, and a strip 13.
13 and insert f14 into each through hole 12.12 to assemble them together.

Further, a conventional formwork panel 18 is erected in parallel on two floors opposite to the formwork panel for the concrete outer wall,
The lower part is fixed to the floor F, and the upper part is fixed to the formwork 19 of the beam. Note that both panels are connected by a plurality of separators 7,
A three-tier crossbar 16 is fixed to the outer surface to provide a strong framework.

In this way, after the formwork assembly is completed, concrete is poured. At this time, the plurality of aluminum reinforcing rods 2 and crossbars 16 prevent unnecessary bulging of the concrete IJ-to external wall formwork pallets due to the concrete indentation J. After the concrete hardens, each P! ! 14. Crosspiece 16. Natsuto 11
The concrete outer wall formwork panel is removed, but the upper flexible pasule 17 is left as is.

On the next upper floor, formwork is assembled by repeating the same work as above, but at this time, as shown in FIG. is used as it is as a lower flexible panel, and the lower edge of the plywood board 1 of the concrete outer wall formwork baffle is placed on the upper edge of the upper flexible panel 17 and fixed in the same manner. In addition, the upper flexible baffle 17 again cuts the plywood board along the longitudinal direction with a width equal to the distance between the upper edge of the concrete outer wall form panel 1 and the upper surface of the floor F of the upper floor. form and assemble in the same way. Normally, in a multi-story building, the distance between the floor F and the ceiling becomes shorter as you move up the floor due to weight balance, so the beam H(7) becomes shorter and the upper flexible panel 17 The width of the rows becomes shorter as you move up the floor.

As mentioned above, the upper flexible panel on each floor can be used as the lower flexible panel without removing it when assembling the formwork on the floor above, and each concrete external wall formwork panel can be lifted up to the upper floor one by one and reused many times. As a result, the assembly work is extremely simple and can be done quickly.

[Effects of the Invention] As described above, according to the present invention, the upper flexible baffle can be used as the lower flexible baffle without removing it on the upper floor, which is extremely convenient, and the formwork panels for concrete external walls are made of aluminum. Since reinforcing rods protrude from the upper and lower edges, it can be easily connected to the upper and lower flexible panels on each floor, and can be used on all floors. As a result, the number of assembly members is reduced, which is not only economical, but also makes it safe and easy to perform the work several times, which in turn has a significant effect in improving work efficiency.

[Brief explanation of the drawing]

The figures relate to an uninvented formwork panel for external concrete walls and a method of assembling the formwork using its pulses. Fig. 1 is a perspective view of the formwork panel for external concrete walls, and Fig. 2 is the assembled state of the formwork. 3 is a sectional view showing the same side M, FIG. 4 is a perspective view of the separator, FIG. 5 is a sectional view showing the assembly procedure of the formwork, and Fig. 5 is a sectional view showing the assembled state of the conventional formwork. It is a diagram. 1... Plywood board, 2... Aluminum reinforcing rod, 2a...
・Top end, 2b...bottom end, F...floor, H...beam,
5...Outer wall surface, 15...Lower free passle, 17.17
″ ... Upper flexible baffle. Figure 1 Figure 3 Figure 5

Claims (2)

[Claims] (1) Multiple aluminum reinforcing rods are attached in parallel along the longitudinal direction to one side of a rectangular plywood board whose height is shorter than the distance between the floors of each floor of a concrete building, including both edges. A formwork panel for a concrete exterior wall, characterized in that the aluminum reinforcing rods are fixed and the upper and lower ends of each of the aluminum reinforcing rods are respectively projected by a desired dimension from the upper and lower edges of the plywood board. (2) Cut a plywood board of the same shape as the plywood board along the length to a desired width to form a lower flexible panel, and make the lower flexible panel horizontally long and vertical so that the upper edge matches the top surface of the floor. The concrete external wall formwork panel is fixed vertically by fixing it to the external wall surface of the concrete beam, and placing the lower edge of the plywood board on the upper edge of the lower flexible panel, and then fixing the concrete external wall formwork panel vertically. A flexible upper panel is formed by cutting the plywood along the longitudinal direction with a width equal to the distance between the upper edge of the plywood board of the panel and the upper surface of the floor of the upper floor, and the flexible upper panel is used as the formwork panel for the concrete exterior wall. The formwork is placed horizontally and vertically on the upper edge of the plywood board of the concrete exterior wall formwork panel, and is integrally framed with each aluminum reinforcing rod that projects upward from the upper edge of the plywood board of the concrete exterior wall formwork panel to form a formwork. After pouring and hardening, the upper flexible panel is not removed from the concrete outer wall surface, only the concrete outer wall panel is removed and lifted to the upper floor, and the lower edge of the plywood board of the concrete outer wall panel is placed on the upper edge of the upper flexible panel. A method for assembling formwork using formwork panels for concrete external walls, characterized in that formwork for each floor is sequentially framed by the same procedure by vertically erecting and framing.