JP3214693B2 - Void block fixing bracket, void block, half unit, simple floating stopper, and void slab construction method using these - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing of a void block for simplifying the installation of a void slab in the construction field.
Metal fittings, void blocks, half units and simple floating stoppers
The present invention relates to metal fittings and a method for constructing a void slab using the same .

[0002]

2. Description of the Related Art Conventionally, as a construction form of a void slab portion, after a reinforcing steelworker manually assembles a lower reinforcing bar on a temporary slab frame,
Void work is fixed from the bottom of the slab temporary frame that is not related to the lower end reinforcing bar. However, it is common to construct the upper rebar by hand assembly.

[0003] Further, a box-shaped unit having a void form sandwiched between upper and lower rebars of appropriate dimensions from the beginning in a factory is spread over a temporary frame, and then cut into a standard length. There is also a way to reinforce each other between units.

[0004]

The above-mentioned general construction of the void slab requires a large number of skilled workers, such as a steel bar builder and a void builder, and the division of the work results in poor work efficiency and labor costs. And construction costs will increase.

[0005] In addition, in the manual rebar work and the installation of one void formwork one by one, the work efficiency can be further improved and the work cannot be performed by workers other than skilled workers. It cannot cope with a serious shortage of skilled workers.

[0006] On the other hand, a method of laying a box-shaped unit in which a void form is sandwiched between upper and lower rebars on a temporary frame is a method of forming an opening for equipment and electric wiring. Equipment cannot be used, and opening work is performed by gas cutting, which has a high risk factor.

At the same time, the box-shaped fixing of the upper and lower rebars from the beginning makes it difficult to install opening reinforcements for the lower rebars, it is difficult to tie the lower rebars together, and it requires skill.
The amount of streaks between the units is also large, and the work efficiency deteriorates due to the increase in the work of arranging the streaks and the work of binding.

In addition, since the weight of the box-type unit is heavy, the working crane is always in the working condition, the work occupation rate of the crane is increased, and other types of construction are affected by the construction period.

[0009]

Means for Solving the Problems The above conventional problems are solved.
Therefore, the void block fixing bracket of the present invention has two
A lower reinforcing bar and a lower portion are welded to the lower reinforcing bar.
The outer edge of the cross section perpendicular to the longitudinal direction of the id form is abutted
Void formwork having a reinforcing bar with side profile formed in inverted V-shape
A fixing bar, and an upper portion welded to an upper portion of the void form fixing bar.
And a part reinforcing reinforcing bar. Furthermore, below
Partial square reinforcement and each of the long sides of the lower square reinforcement
The lower part is welded and cut perpendicular to the longitudinal direction of the void form.
Void form fixing bar having a reinforcing bar whose outer edge is abutted
And each of the long sides on each of the void form fixing muscles
And a welded upper square reinforcing bar.
You. Further, the void block of the present invention is a void block.
A fixing bracket and the void of the void block fixing bracket
The void formwork inserted through the formwork fixing muscle.
Have Also, the half unit of the present invention
Fixed to the void block and the void block
And a top reinforcing steel wire mesh. Ma
In addition, the simple floating stopper of the present invention has a dimension adjustment rotary back.
Screw and one end of the dimensional adjustment rotary buckle.
Of the reinforcing bar receiving hook part and the dimension adjustment rotating buckle part
A fixing bracket fixing bolt having one end screwed to the other end,
One end is fixed to the other end of the fixing bracket fixing bolt.
The end is expanded toward one end of the fixing bracket fixing bolt.
Take the open fixing bracket and the fixing bracket fixing bolt
The attached cone and one end of the fixing bracket fixing bolt
And the other end is fixed to the dimension adjustment rotary buckle part.
The cone is fixed to the cone and attached to the fixing bracket side.
And a biasing cone fixing spring.
In addition, the void slab construction method of the present invention has
A step of arranging the reinforcing steel wire mesh;
Place a void block on the lower reinforcing bar welded wire mesh
Binding between the metal block fixing bracket and the lower reinforcing steel wire mesh.
And binding and fixing the void block fixing brackets
And the void bund fixed and bound in the step
Spread the upper reinforcing steel wire mesh on the lock fixture
And a process. In addition, on the temporary frame
A step of arranging the lower end reinforcing wire mesh;
Place the half unit on the welded wire mesh
And a step of performing the above steps. With this configuration
Therefore, the present invention has been changed to a void form of dimensions and heavy material which cannot be moved by a worker alone as a general method in the past.
By creating a void block by incorporating a void form made of lightweight material of a fixed length that is easy to carry into the void block fixing bracket, the worker can move the void block by himself, and the void type that was arranged one by one Workability can be significantly improved by arranging frames in block units.

[0010] The connection method of the void block is also such that the horizontal connection is performed by binding the void block fixing brackets, and the vertical connection is performed by using the concavo-convex molding of the void form itself.
Since the connection can be easily performed, the workability can be improved without requiring any skilled workers.

Further, the upper and lower rebar arrangement diagram according to the structural design at the factory is converted into a distribution map of dimensions that can be delivered, and is incorporated into the welding mesh and the void block fixing bracket for the upper and lower rebar manufactured according to the diagram. Using a void block and a simple floating stopper, according to the situation at the construction site,
(1) A void slab construction method in which the lower end reinforcement mesh, the void block, and the upper end reinforcement mesh are separately carried in, or (2) the lower unit reinforcement mesh and the half unit in which the void block is incorporated in the upper reinforcement mesh are carried in. It can be performed.

As methods of [0012] (1) (2), all the major part is because the production at the factory, skilled workers is not required, a combination of measurements worked welded wire mesh and lightweight void block,
The conventional two types of work, namely, the reinforcement work and the void work, can be performed by only non-professional workers as one work.

Further, as in the case of a box-type unit, construction can be carried out without using a crane at all times, and the reinforcing bar cutting work for various openings can be easily performed by the electric reinforcing bar cutting device because the upper and lower reinforcing bars are separated. It is a safe operation without the use of available and high risk gas cutting equipment.

In addition, unlike the box-type unit, by separating the upper reinforcing bar and the lower reinforcing bar, the required length of the joint portion can be woven in at the time of manufacturing the welded wire mesh, so that the measurement can be performed. Only a simple bundling operation between welding wire meshes is required, and no skilled person is required.

[0015] As described above, the present invention, the void blocks a solid
Metal fittings, half units and simple floating fittings, and
By using the void slab construction method using these, it is possible to simplify the void arrangement work and improve the work efficiency, and it is a simple work form that copes with the shortage of skilled workers in the future. The purpose is to provide cost reduction.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an overall construction perspective view in which a void slab is formed using a void block in which the void form of the present invention is formed into a block shape with a void block fixing bracket.

[0018] The illustration of incorporating voids block voids formwork voids block fixing bracket, FIG. 2, FIG. 3, FIG.
8, 9, 13.

The void block fixing bracket is, as shown in the perspective view of the void block fixing bracket in FIG. 4, a void form fixing, lateral connection, and a space shape maintaining bracket for the upper and lower reinforcing bars manufactured by processing a reinforcing bar. 4 (a) and 4 (b)
Is a perspective view of a void block fixing bracket in the present embodiment.
is there. In FIG. 4A, 1A is a void block fixed.
Metal fittings, 1a for lower reinforcing bar, 1b for lower reinforcing bar 1a
The bottom is welded and the section of the void
Side profile with rebar with outer edges abutting formed in inverted V-shape
1a is a void form fixing bar 1b
Is the upper reinforcing bar welded to the upper part. In FIG. 4 (b)
In addition, 1B is a void block fixing bracket, 1d is a lower corner.
Shape reinforcing bars, 1e are attached to each of the long sides of the lower square reinforcing bar 1d.
The lower part is welded and cut perpendicular to the longitudinal direction of the void form.
Void form fixing bar having a reinforcing bar against which the outer edge of the surface is abutted,
1f has a long side on each of the void form fixing bars 1e.
Is a welded upper square reinforcing bar.

As shown in the side view of FIG. 7, the side shape of the void block fixing bracket is an inverted V type or a square type, and is used depending on various conditions of construction.

The void block fixing bracket is as shown in FIG.
An iron or stainless steel bar having a diameter of 4 mm or more is processed into a front shape such that two to four void formwork can be accommodated.

The dimensions of the shape are adjusted in accordance with the sectional shape of the void form to be used, and when reinforcement is required, the reinforcement processing is made dense.

The processing as perspective-plan view of FIG. 4 and FIG. 6, when the side shape of reverse V-type, as the front shape Boi <br/> de formwork lightweight enters to 4 present two The reinforcing bar is arranged on both sides, and the upper and lower reinforcing bars of the same dimensions are welded and molded.

[0024] For prismatic make Reinforcement rectangular for the upper and lower, them with front shape void formwork lightweight two-
Four rebars are processed on both sides and welded and molded.

Here, the gist of the void block fixing bracket is summarized below.

(A) A combination of the void block fixing bracket 1 and a void mold made of a lightweight material is used to reduce the size of the lightweight
Voids blocked by configuring the mobile and lower reinforcing bars easily void formwork at the building site in a workers alone in block units such as voids formwork two of four units from the present Figures 2 and 3 Can be placed on top.

(B) By bonding the void block fixing bracket, the lower end reinforcing bar, and the void block fixing bracket to each other with a binding wire or a binding bracket, the void formwork can be fixed to the lower end reinforcing bar and laterally connected as shown in FIG. .

(C) The void block fixing brackets arranged at regular intervals also function as reinforcing spacers for maintaining the spatial shape of the lower reinforcing bar and the upper reinforcing bar as shown in FIG.

Next, the vertical connection of the void blocks and the cross-sectional shape of the void form will be described.

In the vertical connection of the void form, as shown in FIGS. 9 and 10, a notch portion for connecting unevenness is formed in the longitudinal direction of the void form itself, and the void form and the void block are vertically connected to each other.

As shown in the enlarged view of FIG. 11, the cut portion is manufactured by giving a cut angle to the uneven portion in order to prevent the void form from coming off.

The sectional shape of the void form may be circular, elliptical, oval, or polygonal as shown in the sectional view of the void form in FIG. 12 to facilitate equipment piping and electrical wiring at each building site. Use according to the situation of each building site.

At the same time, depending on the situation at the construction site, the void formwork itself is manufactured by opening a space for equipment piping and electric wiring inside.

FIG. 13 shows a void block obtained by combining a void block fixing bracket 1 and a lightweight void form 2 on a lower reinforcing bar 3.
FIG. 3 is an arrangement plan view in which locks are connected vertically and horizontally.

Next, a method for constructing a void slab using the metal block fixing bracket 1 and the simple floating stopper 5 will be described.

First, as shown in FIG. 16, a bar-type spacer 7 is placed on the temporary frame 6 of the slab to maintain a space shape for covering concrete.

In order to make the upper reinforcing bar 4 and the lower reinforcing bar 3 sized to be transportable in accordance with the reinforcing bar of the structural design, divisional allocation is performed in the direction of the reinforcing bar, and a welding wire mesh having the split allocation dimensions is manufactured at the factory as shown in FIG. I do.

As shown in FIG. 14, the welding wire mesh used in this construction method has a required joint dimension in one or both directions of the main reinforcing bars and the distribution bars in order to simplify the joint work between the welding wires. It will be.

The lower reinforcing bar of the welding wire mesh is placed on the bar-shaped spacer 7 so as to overlap with the joint in the direction of the force distribution bar as shown in FIG.

The joints extending from the lower beam reinforcing bar and the lower beam reinforcing bar and the lower beam reinforcing bar are bound together.

Subsequently, a void block formed by combining a void formwork and a void block fixing bracket at a factory on the lower reinforcing bar arranged on the temporary frame 6 is provided with a void block at a void formwork placement location based on a structural design. It is vertically and horizontally connected and bound and fixed as shown in FIG.

As the material of the void form, a lightweight material such as styrofoam, paper, or plastic is used to reduce the weight of the void block.

The lower reinforcing bar and the void block are fixed so as not to be displaced, and the upper and lower reinforcing steel wire meshes, which are divided and assigned, are placed on the joints in the direction of the distribution bars as shown in FIG. I will spread it.

After arranging the upper rebar welded wire mesh, the joints extending from the upper beam rebar and the small beam rebar and the spread upper end rebar and the joint between the upper rebar weld wire meshes are bound.

FIG. 16 is a cross-sectional view after the arrangement of the upper and lower rebars and the void blocks.

After the reinforcing bars have been arranged, a simple retaining metal fitting 5 is provided to prevent the entire void slab from rising when concrete is cast and preventing the concrete from being removed.
Is installed.

FIG. 19 is a perspective view showing the arrangement of the simple floating fittings.

Next, a description will be given of a void slab construction method using a half unit which further saves labor in the void slab construction method using the void block fixing bracket and the simple floating stopper.

Void slab construction using half unit
The method is void block until the bottom reinforcing bar welded wire mesh arrangement
This method is the same as the method of constructing a void slab using the method described above, but is a method in which a half unit in which a reinforcing bar welded wire mesh is previously bound and fixed to a void block , which is a combination of a void block fixing bracket and a void formwork, at a factory is manufactured and constructed.

FIG. 20 is a perspective explanatory view of a half unit.
FIG. 21 is a front view, and FIG. 22 is a side view.

In the construction procedure, as shown in FIG. 23, the half units incorporating the void blocks are sequentially placed on the joints in the direction of the distribution muscles on the lower end reinforcing bar which has been arranged, and thereafter, are arranged. Working with a void using a void block
It is performed in the same way as the doslab construction method .

Next, the simple floating stopper 5 will be described.

In the conventional metal fitting for retaining the reinforcing bar and the slab temporary frame, a hook separator whose upper end is bent into a hook shape is hooked on the reinforcing bar, and one of the two is fastened to the lower portion of the temporary frame with a form tie or the like.

Naturally, the fixing work was carried out by two persons, and several kinds of separators were used for dimensional adjustment when the height of the temporary frame and the reinforcing bar were different.

The gist of the present invention is a simple floating stopper which can be used alone to prevent floating when concrete is poured and the height can be easily adjusted with one kind of fitting.

FIG. 24 is a front view of the simple floating stopper.

First, a hole is made in the temporary frame 6 with a drill, the simple retaining metal 5 is inserted, and the fixing metal 13 is fixed to the temporary frame.

The cone 12 is fixed by the repulsive force of the spring by the cone fixing spring 11 so that there is no gap in the temporary frame 6 as shown in FIG.

The reinforcing bar receiving hook 8 is hooked on the upper reinforcing bar 4 , and the size adjusting rotary buckle 9 is rotated to adjust the size with the temporary frame 6 and fixed.

After the concrete casting work, the lower separator
Since a notch for threading is provided in the lower part of the part 10, the part below the temporary frame 6 is easily folded and removed with a torque wrench or the like.

[0061]

According to the present invention, the following effects can be obtained.

A void block manufactured by a combination of a void block fixing bracket and a void mold made of a lightweight material is manufactured by moving the void form one by one at a construction site, or adding one to a void temporary frame receiving bracket previously set in the temporary frame. Workability is greatly improved because there is no need to fix books one by one, and the simple connection method of vertical and horizontal void blocks.

Since the void form has a sectional shape suitable for the situation at the construction site, the work of equipment piping and electric wiring can be saved.

The method of constructing a void slab is almost entirely made in a factory by using a welded wire mesh allocated in a factory and dimensioned for transportation and a lightweight and simple void block and a simple floating metal fitting. Skills are no longer needed and specialized craftsmen are no longer needed.

Although the conventional types of construction were two types, that is, a reinforcing bar operation and a void formwork installation operation, the type of operation is now one type.
Significant labor saving and shortening of construction period became possible.

The void slab construction method using a half unit, in which the void slab construction method is further labor-saving, is a prefabricated construction method in which on-site assembly work is further reduced.

This is a construction method suitable for a small number of workers to work in a short period of time.

The void slab construction method separates the bottom reinforcing bar from the void formwork and the top reinforcing bar, thereby facilitating the installation of reinforcing bars at various openings of facilities and the like.
Since the material is transported to the construction site in the form of a void block or a welded wire, the time for material transportation can be reduced.

In the simple floating stopper, the height of the temporary frame and the upper rebar is adjusted by one type of metal fitting, and the flash type anchor is used to insert the temporary frame into the hole on the temporary frame without using any fasteners. In addition, when necessary, the cone or hat bracket is fixed to the temporary frame with the force of a spring, so that the conventional work has always been performed by two people on the temporary frame. In this way, the workability has been greatly improved, and labor costs have been reduced.

[0070] Then, by using the void blocks to produce in combination with convenience and void block fixing bracket and lightweight materials of voids formwork simple lifting studs, Boi
With the doslab construction method, it was possible to shorten the construction period and save construction costs .

[Brief description of the drawings]

1 is a perspective view of the entire Void Slab Using voids block

FIG. 2 is a perspective view of a void block.

FIG. 3 is a plan view of a void block.

FIG. 4 (a) is a perspective view of a void block fixing bracket, and (b) is a perspective view of a void block fixing bracket.

FIG. 5 is a front view of a void block fixing bracket .

FIG. 6 is a plan view of a void block fixing bracket.

FIG. 7 is a side view of a void block fixing bracket.

FIG. 8 is a plan view showing a state of horizontal connection of the void blocks .

FIG. 9 is a plan view showing a state in which the void blocks are vertically connected .

FIG. 10 is a diagram showing a connection state of a void formwork.

FIG. 11 is an enlarged view of a connection part of a void formwork.

FIG. 12 is a sectional view of a void formwork .

[13] while placing the voids blocks on the lower end reinforcing bars
A plan view showing

FIG. 14 is a plan view of the upper and lower rebar welded wire meshes.

FIG. 15 is a diagram showing a method of joining upper and lower rebar welded wire meshes;

[16] side of the Void Slabs Using the void block
Front view

[Figure 17] while placing the voids blocks on the lower end reinforcing bars
Perspective view showing

[Figure 18] while placing the upper reinforcing bars on voids block
Perspective view showing

FIG. 19 is a perspective view showing a state where a simple floating stopper is arranged.

FIG. 20 is a perspective view of a half unit .

FIG. 21 is a front view of a half unit .

FIG. 22 is a side view of a half unit .

FIG. 23 is a perspective view showing an arrangement method of a half unit .

FIG. 24 is a front view of a simple retaining fitting.

FIG. 25 is a diagram showing a method of fixing the simple retaining metal to the temporary frame.

[Explanation of symbols]

1, 1A, 1B Void block fixing bracket 1a Lower reinforcing bar 1b, 1e Void form fixing bar 1c Upper reinforcing bar 1d Lower square reinforcing bar 1f Upper square reinforcing bar 2 Void form 3 Lower reinforcing bar 4 Upper reinforcing bar 5 Simple floating stopper 6 Temporary Frame 7 Bar Type Spacer 8 Reinforcement Reception Hook 9 Dimension Adjustment Rotating Buckle 10 Lower Separator 11 Cone Fixing Spring 12 Cone 13 Fixing Fixture 14 Fixing Fixing Bolt

Claims (7)

(57) [Claims] 1. Two lower reinforcing bars and the lower reinforcing iron
The lower part is welded to the streak and the section perpendicular to the longitudinal direction of the void form is cut.
The shape of the side surface with the reinforcing bar where the outer edge of the surface comes into contact is inverted V-shaped
The formed void form fixing muscle and the void form fixing muscle
And a top reinforcing bar welded to the top of
A void block fixing bracket characterized by the following. 2. A lower square reinforcing bar, and said lower square reinforcing bar.
The bottom of each of the long sides is welded to the length of the void formwork
Bore with a reinforcing bar against which the outer edge of the cross section orthogonal to the direction
Id formwork fixing muscles and upper portions of each of the void formwork fixing muscles
And upper square reinforcing bars each of which has a long side welded to
A metal fitting for fixing a void block. 3. A void block according to claim 1 or 2.
A fixing bracket and the void of the void block fixing bracket
The void formwork inserted through the formwork fixing muscle.
A void block, characterized in that: 4. A void block according to claim 3, wherein
Welded wire mesh with upper end rebar fixed to void block
And a half unit comprising: 5. A dimension adjusting rotary buckle part, and said dimension adjusting part.
Reinforcement receiving hook screwed to one end of the rotating buckle
And one end side at the other end of the dimension adjusting rotary buckle part.
The screwed fixing bracket fixing bolt and the fixing bracket fixing bolt
One end is fixed to the other end of the
Fixing metal that opens toward one end of the fixing bolt
And a cone attached to the fixing bracket fixing bolt
And one end portion of the fixing bolt
The other end is fixed to the cone with the roll buckle part
Fixed to urge the cone toward the fixture
A simple retaining pad comprising: a spring;
Utensils. 6. A process for arranging a reinforcing steel wire mesh at a lower end on a temporary frame.
And on the lower end reinforcing wire welded wire mesh arranged in the step,
(A) two lower reinforcing bars and lower portions on the lower reinforcing bars ;
Is welded and the outer edge of the cross section perpendicular to the longitudinal direction of the void form
Is shaped into an inverted V-shape with a reinforcing bar against which
Void formwork fixing muscles, and above the void formwork fixing muscles
Void block with welded top reinforcement
A metal fitting, or (b) a lower square reinforcing bar, and the lower corner
Void type with each lower part welded to each of the long sides of the shape reinforcement
A reinforcing bar whose outer edge of the cross section orthogonal to the longitudinal direction of the frame
Each of the void form fixing muscles having the
Upper square reinforcing bars each of which has a long side welded to each upper part,
A void block fixing bracket having
The bolt inserted into the void form fixing bar of the
And a void block having a void form.
Binding between the metal block fixing bracket and the lower reinforcing steel wire mesh.
And binding and fixing the void block fixing brackets
Performing, and the void block fixing bracket bound and fixed in the step
A step of laying a top reinforcing steel wire mesh on the top . 7. A process for arranging a reinforcing steel wire mesh at a lower end on a temporary frame.
And on the lower end reinforcing wire welded wire mesh arranged in the step,
Item 7. The void block according to Item 6, wherein the void block is connected to the void block.
A half unit with a fixed upper reinforcing bar welded wire mesh
And a step of arranging the void slab.