JPH02266026A - Dry formwork execution method by concrete block - Google Patents

Abstract

PURPOSE:To increase strength of forms and working efficiency, by using concrete blocks as a form used for a concrete building foundation and constructing dry forms with fastened steel bars and base plates. CONSTITUTION:Anchors 2 are fastened every certain interval on the ground, on which a concrete foundation is constructed, and erected with screwed vertical steel bars 7. Next, the blocks 1 are stacked up to a required height with the pierced vertical steel bars 7 contacting the top plate of the highest face at the uppermost stage and fastened with nuts 10. Next, the top plates 4, 4 constructed in this way by the block walls are connected by steel bars 11 for defining the width. And concrete is placed into the forms of the block walls to construct a foundation. In this way, the strength of the forms is increased and the block wall becomes a wasted form and hence, disassembling works are not necessary and working efficiency is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a formwork construction method for constructing concrete foundations for buildings and other structures.

<Prior Art> Concrete foundations are constructed for buildings and other structures. The formwork construction method for constructing this concrete foundation is to frame it with a formwork made of wooden or steel panels, pour concrete, remove the formwork once the concrete has hardened, and clean up the formwork materials as part of the work. This is traditional boat fishing.

<Problems to be Solved by the Invention>'' - In the case of conventional foundation formwork construction, not only many formworks of wooden panels or steel panels are required, but also This requires dismantling the formwork and cleaning up +'J work.

Therefore, it may be possible to use concrete blocks as formwork for foundation construction.

In this case, the masonry concrete blocks become disposable formwork that does not need to be dismantled after the concrete is poured and hardens, and the disassembly and cleanup work like the above wooden and steel panel formwork is omitted. However, the method of building concrete blocks uses mortar at all joints.
This is the so-called wet method, in which steel rods are inserted both vertically and horizontally to fill concrete.According to this construction method, there are many side jobs such as preparing and cleaning up the various charges for making mortar.
Unless there are two skilled workers, it is impossible to stack accurately and efficiently. Furthermore, since the formwork is used for concrete I/placement, a large lateral pressure is naturally applied to the wall surface, so the wall strength is required to be able to withstand this pressure.

Means for Solving the Problems> The present invention solves the problems of the above-mentioned formwork using wooden and steel panels, and also solves the problems when formwork is constructed using wet method 1 using concrete blocks. This method provides a dry formwork construction method using concrete blocks, in which anchors with screw holes are fixed to the base surface at regular intervals, vertical steel bars are screwed into these anchors to stand upright, and the vertical steel bars are penetrated. Blocks are stacked empty on concrete 1, a top plate is brought into contact with the upper end surface of the stacked concrete blocks by penetrating the vertical steel rod, and this top plate is tightened with a screw threaded onto the vertical steel rod. It is.

Furthermore, it is effective to limit the width between the parallel walls of the stacked concrete block walls using a width increasing member.

The width stopper member may be provided between the l/tub plates of both walls, or between arbitrary positions up to the top of the concrete block wall.

Moreover, it is preferable to connect adjacent steel bars with a steady rest member.

Function> The present invention forms a formwork wall body with high strength by stacking blank concrete blocks without using mortar at joints and tightening them with steel rods and seat plates.

<Examples> Examples of the present invention will be described below based on the drawings. Fig. 1 shows various types of members used in the present invention, in which 1 is a standard concrete block (hereinafter referred to as a block);
1a is a Corey block, 2 is an L-tub plate having screw holes 3, 4a is an intermediate plate, and a through hole 5 for a vertical steel bar 7 and a steel bar 11 for width stop, which will be described later.
The hook has a locking hole 6. 7 has a vertical steel bar,
It has screws 8 and 9 at both ends. 10 is oak l-
111 is a width stopper steel rod. Reference numeral 20 denotes a steady rest plate, in which a plurality of holes 21 passing through the vertical steel rod 7 are bored.

Next, the dry formwork construction method of the present invention using the above-mentioned members will be explained with reference to FIGS. 2 to 7. First, concrete
1. Anchors 2 are fixed at regular intervals to a base surface 12 on which a foundation is to be constructed. This amplifier y-2 can be fixed using adhesive, or by drilling a hole in the base surface 12.
This is due to the method of burying it in this.

The screw 8 at the lower end of the vertical steel bar 7 is screwed into the screw hole 3 of the amplifier 1-2 fixed to the base surface 12 to stand it upright. The length of this vertical steel bar 7 corresponds to the stacking height of blocks 1, which will be described later.

Next, the blocks 1 are stacked empty to a required height by passing through the vertical steel rods 7, and the top plate 4 is passed through the vertical steel rods 7 and applied to the upper end surface of the second highest level of the stacked blocks 1. come into contact with

After that, screw I/10 onto the screw 9 at one end of the vertical steel bar 7, tighten the top plate 4-, and tighten (fix) the empty blocks 1.
In addition to the single-piece shape that abuts each block 1 like the one on the garden side, it may also be a long plate that abuts all the blocks in a continuous manner.

The block walls constructed in this manner are formed in parallel at required intervals, as illustrated in FIGS. 4, 5, and 6. Therefore, when the height of the blocks 1 to be stacked is relatively low, the lateral pressure due to the knee cleat driven between the parallel block walls is small and the width stopper steel rod 1 is
1 is not necessary, but as the stacked height of blocks 1 increases, the lateral pressure due to the poured concrete becomes large and a width stop is required. In such a case, as shown in Figure 4, The L-shaped plate 4 that is in contact with the top two ends of the block 1 is hooked to the stopper hole 6.
Hang both ends of the width-stopping steel rod If. In addition, if necessary, an intermediate plate 4a may be installed at the intermediate portion of the block wall.
The width stopper steel rod 11 is hung and fixed by sandwiching the width stopper to increase the width stopper strength.

Furthermore, by connecting adjacent vertical copper bars 7 with steady rest plates 20, the steady rest plates 20 mutually support adjacent vertical steel bars 7, thereby preventing the vertical steel bars 7 from swinging.

In this way, the block walls formed by empty stacking of the blocks 1 are used as a formwork, concrete is poured between the block walls, and reinforcing bars 13 are embedded in the concrete to construct a concrete I foundation.

Note that the block walls are not necessarily set parallel, and may be set parallel to the fixed wall surface around the dug basement. The purpose of the width stop in this case is achieved by hanging and passing the width stop steel rod 11 between the fixed wall surface and the block wall. In addition, the block wall after concrete pouring will be left as is as a disposable formwork.

<Effects of the Invention> As described above, according to the present invention, when constructing a concrete foundation, the dismantling and clearing of the formwork after pouring and hardening of the concrete, such as formwork for wooden or steel panels, requires a lot of work, etc. becomes unnecessary. In addition, it eliminates the need for mortar joints, which is required when building blocks using the wet construction method, making it possible to perform construction even if you are not an experienced block worker, and improving construction efficiency by 3 to 5 times compared to the two wet construction methods. It is economical to realize this.

In addition, since mortar joints are not required, there is no need to bring cement, sand, etc. to the construction site, and therefore no residual materials are generated. space can be used effectively.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; Fig. 1 is a perspective view of the members used, Fig. 2 is a side view of concrete blocks in an empty state, Fig. 3 is a plan view, and Fig. 4 is a formwork construction. completed drawing,
Figures 5 and 6 are plan views of formwork construction states of various shapes;
FIG. 7 is a partially cutaway perspective view of the same, and FIG. 8 is a diagram showing the state of masonry of the corner block. 1... Concrete block, 2... Anchor, 3
...Screw hole, 4...Top play h, 4a...Intermediate plate, 7...Vertical steel bar, 10...Narrow l-1i
l... Steel rod for width stop, 20... Steady rest plate.

Claims (6)

[Claims] (1) Anchors with screw holes are fixed to the base surface at regular intervals, and vertical steel rods are screwed into these anchors to make them stand upright.
Concrete blocks are stacked empty through the vertical steel bar, a top plate is brought into contact with the upper end surface of the stacked concrete blocks through the vertical steel bar, and this top plate is screwed onto the vertical steel bar by a nut. Dry formwork construction method using concrete blocks, which is characterized by being tightened. (2) Fix anchors with screw holes on the base surface at regular intervals, screw vertical steel bars into these anchors to make them stand upright,
Concrete blocks are stacked empty through the vertical steel bar, a top plate is brought into contact with the upper end surface of the stacked concrete blocks through the vertical steel bar, and this top plate is screwed onto the vertical steel bar by a nut. A dry formwork construction method using concrete blocks, characterized in that the concrete blocks are tightened, and the width of the stacked concrete block walls is further fixed between parallel walls by a width stopper member. (3) The dry formwork construction method using concrete blocks according to claim 2, wherein the width stopper between the walls is formed by joining the width stopper member to the top plates of both walls. (4) The concrete block according to claim 2 or 3, wherein the width stop between the walls by the width stopper member is provided at the top of the stacked concrete block walls and at any position up to the top of the concrete block wall. Dry formwork construction method. (5) The dry formwork construction method using concrete blocks according to claim 1, wherein two or more than two adjacent steel bars are connected by a steady rest member. (6) The dry formwork construction method using concrete blocks according to claim 5, wherein the steady rest member is formed in a flat plate shape.