JPH076243B2 - Concrete construction method, construction runner and construction structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete construction method in which a form is formed by lath plates or iron plates, and the plates are left as reinforcement for the construction, a runner used in the construction method, and a concrete construction structure. .

[0002]

2. Description of the Related Art A lath formwork method has been practiced in which a well-known lath plate formed by making a large number of cuts in an iron plate and pulling the cut in one direction to form a net is used as a concrete formwork.

The conventional lath formwork method is as shown in FIG.
A black wire (11) is applied on the concrete foundation surface (1) according to the width of the beam to be constructed, and a reinforcing reinforcing bar frame (9) is incorporated into the black wire (11). Install the iron runner (27).

Screw shaft (8) upwards on the reinforcing bar frame (9)
(8) is protruded, nuts (82) and (82) are screwed onto the screw shaft, the width determining metal fitting (83) is fitted over both screw shafts, and the nut (8
Support with 2).

The rod-shaped runners (85) are fitted in the U-grooves (84) at both ends of the width determining metal fitting (83), and the lath plate (31) is bundled with the upper runners (85) by the numbered wires (88) or the like and suspended. To support.

On the outside of the lath plate (31), the pipe (86) is oriented vertically, and the pipes (86) are arranged on the lower runner (2) at substantially equal intervals, and the cut-and-raised claw pieces (provided on the lower runner (2) ( Fit the lower end of the pipe to 28), position it, and pull the left and right pipes together with the numbered wire (87).

Concrete is placed between the lath plates (31) (31),
After solidifying the concrete, remove the pipe (86).

[0008]

[Problems to be Solved by the Invention] Since the lath plate (31) is suspended from and supported by the upper runner (85), the number of binding points by the numbered wires (88) increases, resulting in poor workability.

Further, the lath plate (31) is provided between the pipes (86) (86).
The lower end edge of is simply hanging down, and when concrete is poured, the lower end of the lath plate (31) swells and bends due to internal pressure, and the side surface of the beam becomes wavy. The present invention clarifies a concrete construction method capable of solving the above problems, a construction runner and a construction structure used in the construction method.

[0010]

According to the concrete construction method of the present invention, the first step of marking out according to the wall thickness to be built on the foundation surface (1), the reinforcing steel for concrete reinforcement within the marking width. The step of assembling the frame (9) or the step of fixedly deploying the long runner (2) having a substantially U-shaped cross section along the black line (11) with the opening facing upward 3 steps, inserting the height adjusting member (7) into the groove (20) of the runner (2), and the lower end edge of the lath plate (31) or iron plate with the rib (32) oriented vertically
Fourth step of fitting to (20) to form frame wall (3), both frame walls (3)
Cover the upper end of (3) with a long runner (2a) (2a) with a substantially U-shaped cross section with the opening facing downward, and place a predetermined gap between the left and right upper runners (2a) (2a) with a separator (4). A fifth step of connecting while maintaining the above, and a sixth step of placing concrete between the frame walls (3) and (3) are included. Further, the concrete construction runner of the present invention,
It has a substantially U-shaped cross section, one side plate (22) is cut and raised at substantially equal intervals to form a protrusion (23) on the extension of the bottom plate (21), and a nail hole (24) is formed in the protrusion. It is open. In addition, the concrete construction structure of the present invention is reinforced by frame walls (3) and (3) formed on both sides by lath plates (31) or metal plates, and has a U-shaped cross section at the upper end of the frame wall (3). The runners (2a) (2a) are covered, and the corners of the runners are the ridges of the beam.

[0011]

[Operation and effect] In the invention of the concrete construction method, the frame wall (3) is a lath plate (31) or an iron plate in which the ribs (32) are oriented vertically, and the lower end thereof is a groove of the lower runner (2). In order to fit it on (20) and make it self-sustaining, as in the case of suspending and supporting the lath plate with the ribs (32) in the horizontal direction, the lath plate (31) and the upper runner (2a) are The troublesome work of fastening multiple points with the number line (88) is unnecessary, and workability is greatly improved.

The lower end edge of the frame wall (3) has a groove (2
Since the bulge is prevented by fitting in (0), it is possible to prevent the side surface of the concrete beam from waviness.

Height adjusting member in the groove (20) of the lower runner (2)
To insert (7), just insert the lath plate (31) or iron plate into the groove (20) and the upper edge will be aligned with the set height.
The workability is better than adjusting the hanging height of the lath plate (31) by the nut (82) fitted to the screw shaft (82) on the reinforcing steel frame (9).

In the invention of the runner (2), as described above, the lower end of the frame wall (3) is fitted into the groove (20) between the side plates (22) and (22), and the lower part of the frame wall (3) is fitted. Curvature of the edge can be prevented. Further, the protruding piece (23) for fixing the runner (2) to the base surface (1) can be easily formed by cutting and raising one side plate (22) of the runner (2).

In the invention of the concrete construction structure,
Since the corners formed by the bottom plate (21) and side plates (22) of the upper runner (2a) form the ridge of the concrete beam, the upper runner plays a role of reinforcing the ridge and prevents damage to the ridge such as chipping or cracking. it can.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawing shows that a lath plate (31) is used vertically,
1) shows an embodiment in which the parallel reinforcing ribs (32) formed at equal intervals are used in the vertical direction. The lath plate (31) having a standard size is cut according to the height of the beam to be constructed or joined in the longitudinal direction.

A runner for receiving the lower edge of the lath plate (31)
As shown in FIGS. 2 and 5, (2) is formed by cutting a long rod having a U-shaped cross section into a standard dimension, 1800 mm in the embodiment. The runner (2) has a groove width of about 12 mm and a groove depth of about 50 mm. The groove width of the runner (2) is such that two lath plates (31), (31) are fitted with each other with the ribs (31) overlapped with each other.

The runner (2) has one side plate (22) with about 30
A plurality of rectangular protrusions (23) are formed on the extension of the bottom plate (21) by partially cutting and raising it at a pitch of 0 mm.

The projecting piece (23) has a rectangular shape with a width of about 50 mm, and has nail holes (24) (24) for fixing and a connecting hole (in the center of the width direction) to which a separator (4) described later is fitted near the groove. 25) has been established.

Next, the formwork method using the runner (2) and the lath plate (31) will be described. As shown in FIG. 1, a black line, that is, a parallel black line (11) is marked on the basic concrete surface (1) according to the width of the beam to be constructed.

A concrete reinforcing steel frame (9) is incorporated between the black wire (11) and (11) (the reinforcing steel frame is omitted in FIGS. 2, 3 and 4 and is not shown).

As shown in FIG. 2, the runner runs along the black line (11).
(2) Laying. The runner (2) has the groove opening facing upwards
(23) facing outward, align the inner edge with the black line (11), and
Drive concrete nails (29) into 3) and fix to the foundation surface (1). Depending on the work setup, the reinforcing bar frame (9) may be incorporated after the runner (2) is fixed to the foundation surface (1).

The ruler plate (6) is fitted into the groove (20) of the runner (2), the upper end of the ruler plate (6) is aligned with the height of the beam to be constructed while watching the transit (not shown), and the ruler plate Mark (61) the runner (2) according to the lower end position of (6).

As shown in FIG. 5, the spacer (71) is fitted into the groove (20) of the runner (2) up to the position of the mark (61) to form the height adjusting member (7) of the lath plate (31).

As shown in FIG. 4, the lath plate (31) is used vertically and its lower end is fitted into the groove (20) of the runner (2) to form the frame wall (3).

The lath plates (31) are laterally connected as necessary, and at this time, the adjacent lath plates (31) (31) are fitted in the groove (20) by overlapping the end ribs (32) of each other. A spacer (71) is inserted in the groove (20) of the runner (2), and the upper end of the frame wall (3) is aligned at the set height over the entire length.

A runner (2a) similar to the above runner (2) has a groove opening downward and a projecting piece (23) facing outward, and a frame wall (3).
Cover the top of.

The bent pieces (41) (41) at both ends of the separator (4) are
Connecting holes formed on the protrusions (23) of the left and right upper runners (2a) (2a)
Fitting in (25), the frame walls (3), (3) are held at a predetermined width between their upper ends to connect the frame walls (3), (3).

The separator (4) is formed by bending both ends of a round bar at right angles in the same direction. Outside the frame wall (3), the reinforcing rods (5) made of square pipes are placed sideways and the lath plates (31) (31)
The left and right reinforcing rods (5) are bound by the numbered wire (51) penetrating through.

Concrete is poured between the frame walls (3) and (3). Once the concrete has solidified, remove the reinforcing rod (5).

As shown in FIG. 6, both sides are lath plates (31) (31).
The runners (2a) and (2a) having a U-shaped cross section are covered on the upper end of the frame wall (3) to complete the concrete construction structure in which the corners of the runners are the ridges of the beam.

As described above, since the lower end of the lath plate (31) having the ribs (32) oriented vertically is fitted into the groove (20) of the lower runner (2) to be self-supporting, the ribs (32) are formed as in the conventional case. Unlike the case of suspending and supporting a lath plate with the () sideways on the upper runner, troublesome fastening work between the lath plate (31) and the upper runner is not required, and workability is significantly improved.

The lower edge of the lath plate (31) is the groove of the lower runner (2).
Since the bulge is prevented by fitting into (20), it is possible to prevent the side surface of the concrete beam from waviness.

By inserting the spacer (71) into the groove (20) of the lower runner (2), the top edge of the lath plate (31) is aligned with the set height only by fitting the lath plate (31) into the groove (20). Similarly, by the nut (82) fitted to the screw shaft (82) on the reinforcing bar frame (9),
Workability is better than adjusting the hanging height of the lath plate (31).

In the practice of the present invention, an iron plate may be used in place of the lath plate (31), in which case the lower runner (2) is used.
As shown by the phantom line in FIG. 5, a plurality of height adjusting holes (26) are formed in the both side plates (22) (22) at equal intervals in the vertical direction, and instead of the spacer (71), left and right Pin across the height adjustment hole (26)
It is also possible to insert (72) and use the pin (72) as a height adjusting member (7) for receiving the lower end of the iron plate. The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state where black lines are drawn on a base surface.

FIG. 2 is a perspective view of a runner laid on a foundation surface.

FIG. 3 is a perspective view showing a state in which a lath plate is erected on a foundation surface.

FIG. 4 is a perspective view showing a state in which an upper runner is covered on the upper end of a lath plate and connected by a separator, and a reinforcing rod is attached.

FIG. 5 is an enlarged view of a main part of a runner.

FIG. 6 is a cross-sectional view of a concrete beam.

FIG. 7 is an explanatory diagram of a conventional method.

[Explanation of symbols]

 (1) Foundation surface (2) Runner (20) Groove (3) Frame wall (32) Rib (4) Separator (7) Height adjusting member (9) Reinforcing frame for concrete reinforcement

Claims (3)

[Claims] 1. A first step of marking out according to a wall thickness to be built on a foundation surface (1), a step of incorporating a reinforcing bar frame (9) for concrete reinforcement within the marking width, or The second and third steps of performing the step of fixedly deploying the long runner (2) having a substantially U-shaped cross section along the black line (11) with the opening facing upward, the groove ( Insert the height adjustment member (7) into 20),
The fourth step of fitting the lower end edge of the lath plate (31) or iron plate with the ribs (32) in the vertical direction into the groove (20) to form the frame wall (3), both frame walls (3) (3) At the upper end of the long runner (2
a) (2a) with the opening facing downwards, and put the left and right upper runners (2
A concrete construction method including a fifth step of connecting a) and (2a) with a separator (4) at a predetermined interval, and a sixth step of placing concrete between the frame walls (3) and (3). 2. A projecting piece (23) is formed on the extension of the bottom plate (21) by cutting and raising one side plate (22) at substantially equal intervals and having a substantially U-shaped cross section. A concrete construction runner with holes (24). 3. Both sides are reinforced by frame walls (3) and (3) formed of lath plates (31) or metal plates, and runners (2a) having a U-shaped cross section are provided at the upper ends of the frame walls (3). ) (2a) is covered, the concrete construction structure in which the corner of the runner is the ridge of the beam.