JPH01235742A - Dry-type formwork construction by concrete block - Google Patents

Abstract

PURPOSE:To easily form a dry-type formwork by a method in which steel parts are erectly connected to steel connectors and anchors set at a given interval on the base and the steel parts are thrust through blocks or their joints and connected with a seat plate by nuts. CONSTITUTION:Steel connectors 2 and anchors 2' are set at a given interval on a base 6 and vertical steel parts 4, e.g., steel bars, etc., are erectly attached through cylinders 2b and couplers 9 to the connectors 2, etc. The steel parts 4 are thrust through concrete blocks 1 or their joints to stack up the blocks 1. The parts 4 are further thrust through a seat plate 2 attached to the upper end of the blocks 1 and clamped with the blocks 1 by nuts 8. A dry-type formwork with the blocks 1 can thus be simply formed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a formwork construction method for constructing a concrete frame and finished surface of a building.

(Conventional technology) As a formwork method for constructing the concrete frame of a building,
Traditionally, concrete is poured using a formwork made of wooden or steel panels, and once the poured concrete has hardened, the formwork is removed and the formwork materials are cleaned up using the boat fishing method. It is.

In the case of conventional formwork construction, it not only requires a large number of formworks made of wood or steel panels, but also requires a great deal of time and effort to dismantle and clean up the formworks after the concrete has hardened. There is a problem with this.

For this reason, it has been proposed to use concrete blocks to construct a formwork for constructing the frame.

(Intelligence to be Solved by the Invention 8) In the formwork construction method using concrete blocks as described above, the concrete blocks that have been laid are 1. After the concrete has been poured and hardened, it becomes a disposable formwork that does not need to be dismantled, and there is an advantage that the demolition and cleanup work like the above-mentioned wooden and steel panel formwork is omitted. When building the blocks, mortar is used at all joints, and steel rods are inserted vertically and horizontally to fill in concrete. According to this construction method,
There are many secondary tasks such as preparing and cleaning up various materials for making mortar, and in addition, skill is required to accurately and efficiently lay concrete blocks.

Furthermore, in order to use the formwork for concrete pouring, a large lateral pressure is naturally applied to the wall surface, so the wall strength is required to withstand this.

The present invention was proposed in view of the problems of the prior art, and its purpose is to eliminate the need to dismantle the formwork after the poured concrete has hardened, and to apply mortar to the masonry of concrete blocks. To provide a method for constructing dry formwork using concrete blocks, which eliminates the need for construction, enables accurate construction even by unskilled workers, and improves construction efficiency.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the dry formwork construction method using concrete blocks according to the present invention includes installing metal fittings and anchors having steel connecting parts at predetermined intervals on the base surface, A vertical steel member is connected to the anchor via the connecting portion and planted from the anchor, and the concrete blocks or the joints of adjacent concrete blocks are penetrated through the vertical steel member and the blocks are stacked empty; A seat plate is brought into contact with the upper end surface of the block through the vertical steel member, and the seat plate is tightened to the concrete block via a tightening member mounted on the member.

Further, the vertical steel member may be composed of a steel rod having threaded portions at both ends and a steel wire.

Further, in the present invention, a steel material for width comparison is connected between opposing concrete block walls in order to counteract the lateral pressure of poured concrete.

The width comparison steel material is connected between the concrete block wall and the formwork made of a material other than the concrete block.

Further, in the present invention, in order to securely construct the concrete block wall, the seat plates are arranged at the upper end and middle part of the concrete block wall.

Further, in the present invention, in order to facilitate the installation of the steel material for width comparison, locking holes are provided in the seat plate, and both ends of the steel material for width adjustment are locked in the locking holes.

Furthermore, according to the present invention, concrete blocks are made into panels of a required size in advance, transported to a construction site, and the panels are assembled.

(Function) According to the present invention, vertical steel members are connected via steel connecting portions provided on anchors installed at predetermined intervals on a base surface, and the members are planted from the anchors to guide the members. As a result, the concrete blocks themselves or the joints of adjacent concrete blocks are stacked blankly, and a seat plate is brought into contact with the upper end surface of the block by penetrating the vertical steel member, and the concrete block is mounted on the same member. By tightening the seat plate to the concrete block using members, the concrete blocks can be stacked dry without using mortar at the joint, and the strength is increased by tightening with the vertical steel members and seat braces. It constitutes a frame wall body.

In addition, by connecting width-stopping steel materials between the concrete block walls constructed in this way, or between the same concrete block walls and formwork constructed of materials other than the concrete block walls, it is possible to reduce the lateral pressure of the poured concrete. It is in opposition to.

Furthermore, in the present invention, concrete blocks are made into panels of a size in advance and transported to a construction site, and the panels are assembled to mechanize the work and improve manufacturing accuracy.
This will shorten the construction period.

(Example) The illustrated example in which the present invention is applied to the construction of underground beams will be described below.

(1) is a concrete block with ridges (1) on one end surface.
a), a groove (1) into which the protruding ridge (1a) fits into the other end surface;
b), and the depth of the concave groove (1b) is larger than the protruding length of the protruding groove (1a). (1c)
is a vertical hole provided in the block body.

(2) is a steel connecting metal fitting, which is installed at a predetermined interval on the base surface (6) where the block vertical joints are located, and has a flat plate (2a) with a cylindrical body (2b) having a female threaded hole planted therein.

Further, a driving anchor (2') having a driving blade (2c) on the lower end outer peripheral part is fixed to the base (6) at the center of the block between the steel connecting fittings (2), and a coupler (2') is fixed to the base (6).
9) is installed. Note that the positional relationship between (2) and (2') may be reversed.

(3) is a seat plate provided with a through hole (3a) of a vertical steel member and a locking hole (3b) of a width stopper steel member.

(4) is a vertical steel rod constituting the vertical steel member, and threaded portions (4a) are provided at the upper and lower ends.

(5) is a steel material for width stopping, and vertically bent locking pieces (5a
) is formed into a gate-shaped piece.

During construction, roots are cut and steel connecting fittings (2
) or anchors (2') are installed at predetermined intervals.

(See Figures 5A and 5B) The steel connecting fittings (2) installed on the base (6) surface in this way
) Alternatively, screw the lower end threaded portion (4a) of the vertical steel rod (4) into the female threaded hole of the anchor (2') to stand the steel rod (4) upright. (See Figure 5B) The length of the vertical steel rod (4) corresponds to the stacking height of the blocks (1), and a threaded portion may be provided over the entire length.

In the figure, (4') is a short steel rod having a threaded portion over its entire length for fixing the first stage concrete block. At this time, reinforcement of the frame (a) is performed.

Next, a concrete block (1) is attached to the vertical steel rod (4).
), or through the gap between the protruding stripes (la) and grooves (1b) of the adjacent concrete blocks (1) (1), to raise the same block (1) to the required height. The seat plate (3) is passed through the protruding end of the vertical steel rod (4) and abuts on the upper end surface of the uppermost layer of the stacked concrete blocks (1). After that, tighten the seat plate (3) by screwing the nut (8) onto the upper threaded part of the vertical steel rod (4).
The empty concrete blocks (1) are tightened and fixed to assemble the block wall. (See Figures 5c to 5E) The steel rod (4) may be constructed of a single member extending over the entire height of the block wall as described above, or may be connected via a coupler (9). You can do it like this.

In addition, the seat plate (3) may be a short plate that abuts on each block as shown in the figure, or a long plate that abuts on the blocks of the entire stage. ) is also placed in the middle of the block wall.

(After assembling wall formwork consisting of block walls arranged parallel to each other at predetermined intervals, slab formwork etc.)
(see Figure 51!), place slab reinforcements (C), and pour concrete (B). (See Figure 5P) If the height of the block walls is relatively low, there will be no problem if the lateral pressure from the concrete placed between the two parallel block walls is small, but if the height of the block stacking increases. , the lateral pressure from the poured concrete that the block wall receives becomes large, and it is necessary to prevent the wall from slipping.

In such a case, as shown in Fig. 1, insert both ends of the width stop steel material (5) into the locking hole (3b) of the seat plate (3) that is in contact with the top surface of the uppermost concrete block (1). The vertical bent locking piece (5a) is locked, and the same-width locking steel member (5) is used to resist concrete side pressure.

(See Figure 4) Also, if necessary, the steel rod (4) may be attached to the middle part of the block wall.
A width stop steel material (5) is placed between the opposing middle seat plates (3) by sandwiching the seat plate (3) passing through the width plate to increase the width stop strength.

In addition, in the portions of the seat plate (3) where the width stop steel material (5) is not required, there are locking holes () for the same width stop steel material (5).
3b) is omitted.

The block wall formed by empty stacking of concrete blocks (1) in this way is used as a formwork, concrete is poured between the opposing block walls, reinforcing bars are buried in the cast concrete, and the block wall formwork is The frame is constructed using the scrap formwork.

Note that the block wall formwork is not necessarily installed parallel to each other, but may be installed as an inner formwork for the surrounding fixed wall surface facing each other. In this case, the block wall surface and the fixed wall surface A width-stopping steel material (5) is placed between the blocks and concrete is poured, and the block wall after the concrete is poured is left as it is as a waste form.

In the above embodiment, the vertical steel member is made of a steel rod, but it may be made of a steel wire. In this case, the anchor is provided with a wire gripping part, and the vertical steel member is made of a steel wire. A wire fastening hardware is installed at the end that passes through the abutted seat plate.

Furthermore, instead of stacking concrete blocks one by one, they are formed into block panels of an appropriate size using a jig at the construction site, transported to the designated construction site using a crane, and placed vertically at the joints between the panels. The block panels were assembled using steel rods (4) and seat plates, and in order to resist the lateral pressure of the concrete placed between the panel walls, the concrete blocks were made into panels by connecting steel members for width restraints. It can be a formwork.

The block panel has steel rods (
p) is placed, reinforced under tension, and molded.

(See Figure 7) The formwork construction method of the present invention is not limited to underground beams, but can also be used for general formwork such as walls, in which case tiles, stones, etc. The material is hammered into the surface in advance (thereby, it becomes the finished surface directly).

(Effects of the Invention) As described above, the construction method of the present invention connects vertical steel members through steel connecting parts provided on anchors fixed at predetermined intervals on the base surface, and then plants the vertical steel members from the anchors. , concrete blocks are vertically stacked on the same steel member, or concrete blocks are vertically stacked by penetrating the joints of adjacent concrete blocks, and a seat plate is brought into contact with the upper end surface of the block by penetrating the vertical steel member. , the seat plate is tightened to the concrete block via a tightening member attached to the same member, and the wall formwork is assembled using concrete blocks, so mortar joints can be used like a masonry block wall using the hot construction method. Since the concrete block wall formwork assembled in this way becomes waste formwork, it can be used for hardening of poured concrete like steel panel and wooden panel formwork. Eliminating the need for later disassembly,
This shortens the construction period and reduces construction costs.

In the construction method of claim 2, the vertical steel member is a steel rod having threaded portions at both ends, so that planting from an anchor and tightening work via the seat plate on the top surface of the empty stacked concrete block can be easily performed. It is done.

In the construction method according to the third aspect, the vertical steel member is made of a steel wire, and the flexibility of the wire is utilized to facilitate the penetrating of the concrete block through the wire and the empty loading work.

The construction method according to claim 4 resists the lateral pressure of concrete poured in the formwork by connecting width-stopping steel materials between opposing concrete block walls, making it possible to assemble a high formwork. It is.

In the construction method of claim 5, the wall opposite to the concrete block wall is made of a formwork made of a material other than concrete blocks, and a width-stopping steel material is connected between the two to counteract the lateral pressure of poured concrete. This will expand the scope of application of the construction method.

According to the construction method of claim 6, the seat plate is provided not only at the upper end of the concrete block wall but also at the middle part thereof, thereby reinforcing the concrete block wall.

In the construction method according to claim 7, a locking hole is provided in the seat plate, both ends of a width stopper steel material are locked in the locking hole of the opposing seat plate, and the seat plate is used for tightening a concrete block masonry wall. It is also used for mounting the width stopper steel material, and has a simplified configuration.

The construction method of claim 8 is a construction method that includes:
By making concrete blocks into panels of the required size and assembling formwork in advance, it is possible to use machinery instead of manual labor, which reduces labor, improves manufacturing accuracy, and significantly shortens construction time.

[Brief explanation of the drawing]

Fig. 1 is a slope view showing the implementation status of one embodiment of the dry form construction method using concrete blocks according to the present invention, Fig. 2 is its front view, Fig. 3 is its plan view, and Fig. 4 is its concrete A partially enlarged perspective view of block wall formwork, Figures 5A to 5F are vertical sectional views showing the process when the present invention is applied to the construction of underground beams, and Figure 6 is a dry type molded concrete block panel. FIG. 7 is a front view of the frame and a perspective view of each member used in the method of the present invention. (1)--Concrete block (2)--Steel connecting metal fittings (2')--Anchor (3)--Izamuta (3b)--Steel locking hole for width stop (4)-- Steel rod (4a) - Threaded part (5) - Steel material for width stop (6) - Base (8) - Nut (9) - Coupler agent Patent attorney Shige Okamoto 2nd person Figure 1

Claims (8)

[Claims] (1) Install metal fittings and anchors with steel connecting parts on the base surface at predetermined intervals, connect vertical steel members to the anchors via the connecting parts, and plant them from the anchors, using concrete blocks or The blocks were stacked empty by penetrating the joint part of the adjacent concrete block to the vertical steel member, and a seat plate was brought into contact with the upper end surface of the block by penetrating the vertical steel member and mounted on the member. A dry formwork construction method using concrete blocks, characterized in that the seat plate is tightened to a concrete block via a tightening member. (2) The dry formwork construction method using concrete blocks according to claim (1), wherein the vertical steel member is comprised of a steel rod having threaded portions at both ends. (3) The dry formwork construction method using concrete blocks according to claim (1), wherein the vertical steel member is made of steel wire. (4) The dry formwork construction method using concrete blocks according to claim (1), wherein a width-stopping steel member is connected between opposing concrete block walls. (5) The method according to claim (1), wherein the wall facing the concrete block wall is a formwork made of a material other than the concrete block, and a width-stopping steel member is connected between the formwork and the concrete block wall. Dry formwork construction method using concrete blocks. (6) The dry formwork construction method using concrete blocks according to claim 1, wherein the seat plate is arranged at the upper end and middle part of the concrete block wall. (7) The dry formwork construction method using concrete blocks according to claim (1), wherein locking holes are provided in the seat plate, and both ends of the width-stopping steel material are locked in the locking holes of the opposing seat plate. (8) The dry formwork construction method using concrete blocks according to claim (1), wherein the concrete blocks are made into panels of a required size in advance, transported to a construction site, and the panels are assembled.