KR101271227B1 - Pre-tensioned deck manufacturing mold for free moving and setting up, manufacturing method thereof, and pre-tensioned deck manufactured thereby - Google Patents

Abstract

The present invention relates to a work table for manufacturing a pretension type member free to move and install, a method for manufacturing a pretension type member using the same, and a member of a pretension type produced by them. Pre-tensioning member work platform free movement and installation of the present invention, the tension support including a tensile support H-shaped steel mounted for tension support on the work base on which the basic work is advanced; A compression support portion mounted on an upper portion of the tension support portion and including an H support steel for compression support; A formwork disposed on the compression support for forming a pre-tensioned deck of a pretension method to form a curing space of concrete; And a reinforcement reaction band disposed at both ends of the tension support and the compression support while supporting the tension generated when the tension is introduced into the pretension deck.

Description

PRETENSIONED DECK MANUFACTURING MOLD FOR FREE MOVING AND SETTING UP, MANUFACTURING METHOD THEREOF, AND PRE-TENSIONED DECK MANUFACTURED THEREBY}

The present invention is a work table for manufacturing a member of a pretension method free to move and install (aka, semi-long line mold) and a method for manufacturing a pretension member using the same, and The present invention relates to a manufactured pretensioning member, and more specifically, to a invention that can be advantageously economically advantageously installed and dismantled on a narrow site at any time as needed, unlike a conventional large-scale or fixed workplace. It is about.

Prestressed concrete, also known as PSC and PS concrete, eliminates external forces during use by pre-stressing the members using piano wires, special steel wires, or special steel bars.

In general, concrete is cracked due to tensile strain, and if such compressive force is given to the member in advance, such as a deformed steel, the tensile strain is removed by compressive strain due to the same as the deformed steel. The member itself is not subjected to substantially large tensile strain.

Prestress is applied to concrete by pretension method that puts and hardens both ends of steel wire and compresses it with compressive force after hardening by pouring concrete while applying tensile force to steel wire, etc. There is a posttension method in which a steel wire is inserted into a hole in a member to fix both ends to an end of a concrete member.

Among them, post-tension method can buy sheath pipe in formwork, and then put concrete and put steel wire in sheath pipe after curing so that it can be applied at construction site because it can be applied to construction site. The pretension method is mainly used for mass production of parts in factories because of the difficult manufacturing conditions, such as tensioning steel wires before placing concrete and maintaining tension until concrete reaches a certain strength. have.

There are two conventional methods of manufacturing the pretension member. One is the manufacture of PHC piles and railway sleepers, utilizing metal molds that resist compressive forces and mechanical devices that can securely secure the molds and give tension to the tension. The remainder is mainly used for the production of walls, slabs, and decks. After preparing a long workshop on a large site, the steel wire is settled in the reaction zone of the workshop, and the steel wire is tensioned in the remaining reaction zone. After the tension is released to give a compressive force to the member. Among them, the former method can produce only one product in one mold due to the nature of the formwork, and the latter can have a mass of the same or different lengths with the same width and height.

Both of these existing production methods require a large site to install a mechanical device or reaction table. The former method requires a building to protect the mechanical device. The latter method can be open-aired due to the nature of the product. However, the force applied to the top of the reaction table must bear the weight of the base of the reaction table, so it has to be a fixed device, and there is a disadvantage in that it can produce only a specific product that meets the specifications of the workplace.

Since all of them are methods of mass production of certain shapes, there is a limit in producing small quantity members of various shapes in the field or factory, and it is not easy to reflect the pretension type members in the design, and thus technology development is required. .

Korean Patent Office Application No. 10-2011-0069435

The object of the present invention is to use a semi-long line mold, which is a workbench that is economical and easy to install and dismantle because it does not need a large site and a fixed facility as in the prior art, In particular, pre-tensioned decks can be easily produced in factories or on-site, eliminating the constraints of prestressed concrete design. It is to provide a method for producing an anticorrosive member, and a member of a pretension system produced by them.

The object is a tensile support including a tensile support H-shaped steel mounted for tensile support on the work base on which the foundation work is advanced; A compression support portion mounted on an upper portion of the tension support portion and including an H support steel for compression support; A formwork disposed on the compression support for forming a pre-tensioned deck of a pretension method to form a curing space of concrete; And a reinforcement reaction band disposed at both ends of the tension support part and the compression support part while supporting the tension force generated when the tension force is introduced to the deck of the pretension method. It is achieved by the work bench and the member of the pretension system manufactured by the work bench.

Here, the work table for manufacturing the pretension type member may be moved to a working position after being manufactured in a factory, or may be moved to a working position after being manufactured on an open air.

The reinforcing reaction table may be a plain concrete reinforcing reaction table.

It is installed on the upper end of the reinforcement reaction table but further includes a thread bar (thread bar) for supporting the tension force generated when the tension is introduced into the tensile support H-shaped steel and the right (COUPLE), the compressive force by the tension is the compression support H It can be supported by the section steel.

The thread bars can be connected by a tension coupler.

The tension coupler may include: an inner socket connected to a head of the thread bar to transfer tension when pretension is introduced; And an outer socket that wraps and fixes the inner socket so that the inner socket can be fixed when the inner socket separated into two parts supports pretension tension.

The tension coupler may be heat treated.

When manufacturing the tensile coupler, the edge portion by processing may be chamfered.

The object is a basic work step of proceeding with the basic work; Tensile support H-shaped steel mounting step of mounting the tensile support H-shaped steel as a reinforcing plate for the tensile support on the surface of the foundation work; A compression supporting H-shaped steel mounting step of mounting the compression supporting H-shaped steel for compression support onto the tensile supporting H-shaped steel; Forming step of mounting the formwork to form the curing space of the concrete to form the pre-tensioned deck (pre-tensioned deck) of the pre-tensioning on the compression support H-shaped steel; And a reinforcing reaction band mounting step of mounting a reinforcement reaction band on both sides of the tension supporting H-beams and the compression-supporting H-beams so that the pretension is formed on the pretensioned deck. And a method for producing a pretension type member utilizing a pretension type workbench for free installation and a pretension type member produced by the method.

Here, the steel bar and reinforcing bar arrangement step of placing the steel bar and reinforcing bar after the step of the reinforcement reaction band; A steel bar tension step of tensioning the steel bar; Concrete placing step of pouring concrete into the formwork; A concrete curing step of curing the poured concrete; And deck demolding and stacking steps.

It may further include a tension coupler release step of releasing the tension coupler installed as needed before the deck demolding and loading step.

According to the present invention, there is no need for a large site and a fixed facility as in the prior art, and a member of a pretension method having various shapes, in particular, utilizing a semi-long line mold, which is economical and easy to install and dismantle, Pre-tensioned decks can be easily produced in factories or on-site, eliminating prestressed concrete design constraints.

1 is a plan view of a semi-long line mold for producing a pretensioning member according to the present invention.
2 is a cross-sectional structural view taken along line AA of FIG. 1.
3 is a cross-sectional structural view taken along the line BB of FIG.
4 is a cross-sectional structural view taken along line CC of FIG. 1.
5 is a cross-sectional structural view taken along the line DD of FIG. 1.
6 is a structural diagram of a tension coupler.
7 is a flowchart of a method for fabricating a pretensioned member according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention.

1 is a planar structural diagram of a semi-long line mold for manufacturing a pretensioning member according to the present invention, FIG. 2 is a cross-sectional structural view taken along line AA of FIG. 1, and FIG. 3 is a cross-sectional view taken along line BB of FIG. 1. 4 is a cross-sectional structural view taken along the line CC of FIG. 1, FIG. 5 is a cross-sectional structural view taken along the line DD of FIG. 1, FIG. 6 is a structural diagram of the tension coupler, and FIG. 7 is a pretension according to the present invention. It is a flowchart of the method for manufacturing a member of a system.

As described above, in the prior art for manufacturing a pretension member, all require a large site for installing a mechanical device or a reaction table, and a disadvantage of requiring a building for protecting the mechanical device, and Due to its nature, open-air work is possible, but the force applied to the top of the reaction table must be handled by the weight of the base of the reaction table. Therefore, it can only be a fixed device. Therefore, in the prior art, there is a limit in producing small quantities of various shapes in the field or in the factory, and it is not easy to reflect the members of the pretension method in the design.

However, the present invention does not require a large site and a fixed facility as in the prior art, and utilizes a semi-long line mold (1) that is economical and easy to install and dismantle. The absence of a single, particularly pre-tensioned deck, can be easily produced at the plant or site, eliminating prestressed concrete design constraints.

For reference, as described above, the pretensioned deck refers to a block-type member used when fabricating walls, slabs, and decks, and is also called a half-section bottom plate.

The worktable for manufacturing a member of the pretension method free to move and install according to the present invention for manufacturing such a pretensioned deck, also known as a semi-long line mold (1), is a work base on which a basic work is performed. Tensile support 10 as a reinforcing plate mounted on the tension support on the support, the compression support 20, which is mounted on top of the tension support 10, but is mounted for compression support, and pre-tensioned deck production The tension support 10 and the compression support 20 are disposed on the compression support 20 to support the formwork 30 forming the curing space of the concrete and the tension force generated when the tension force is introduced into the deck of the pretension method. It may include a reinforcement reaction table 40 disposed at both ends.

In this embodiment, the tensile support 10 and the compression support 20 is applied to the tensile support H-shaped steel 10 and the compression support H-shaped steel 20.

Of course, since the scope of the present invention is not limited thereto, the tensile support 10 and the compression support 20 do not necessarily need to be the tensile support H-shaped steel 10 and the compression support H-shaped steel 20, and the H-shaped steel and It is sufficient for a metal member having a similar rigidity as a similar form.

The reason why the tension-supporting H-beams 10 and the compression-supporting H-beams 20 are used is that compression occurs due to the relative reaction force against tension during pretensioning, and for this reason, the tension-supporting H-beams 10 and Compression support H-shaped steel 20 may be arranged to cross each other to form a mold (1).

Formwork 30 is a place where concrete is poured for the production of pretensioned deck of the block structure. In the case of this embodiment, as shown in Figure 1, since a total of six pre-tensioned decks are manufactured, the formwork 30 is also provided correspondingly. Of course, since the numerical scope of the present invention is not limited to the numerical value thereof, the mold 1 of the present embodiment may be provided for manufacturing one pretensioned deck.

The reinforcement reaction table 40 is disposed on both sides of the tension supporting H-shaped steel 10 and the compression supporting H-shaped steel 20 so that pretension can be formed on the pretensioned deck.

In other words, the reinforcement reaction table 40 is a structure that supports one side so that the pretension can be formed on the pretensioned deck to be manufactured. When pulled from one side, it must be supported so that it does not come from the other side, so it can be installed in pairs on both sides. The reinforcement reaction table 40 in this embodiment may be, but need not be, a plain concrete reinforcement reaction table.

The lower end of the reinforcing reaction table 40 is provided with a connector 50 for connecting the reinforcing reaction table 40 and the H-shaped steel 10 for tension support. The connector 50 may be provided with a bolt and nut structure connecting the reinforcing reaction table 40 and the H-shaped steel 10 for tension support.

The connector 50 serves to support the lower end of the reinforcing reaction table 40 and the H-shaped steel 10 for tension support when the thread bar (thread 60) to be described later. The connector 50 may also be the same as the thread bar 60, it may be preferable to apply a larger diameter than the thread bar 60 to be described later.

On the other hand, the upper end of the reinforcement reaction table 40 is provided with a thread bar 60 for supporting the tension force generated when the tension force is introduced into the tensile support H-shaped steel 10 and the right force (COUPLE).

The thread bar 60 may be a steel bar, which may impart pretension to the pretensioned deck by tensioning the thread bar 60.

At this time, a compression force may be generated when the thread bar 60 is tensioned, and this compression force may be supported by the H-shaped steel 20 for supporting the compression. Therefore, it is preferable that the compression supporting H-shaped steel 20 is disposed at the upper end of the tension supporting H-shaped steel 10 as shown.

On the other hand, through the semi-long line mold 1 of the present embodiment, as described above, when six pretensioned decks are manufactured, the thread bar 60 supported by the reinforcing reaction tables 40 disposed on both sides is provided. You need to interconnect. Only then can one pretension.

A tension coupler 70 of the type shown in FIGS. 1 and 6 may be used to interconnect the thread bars 60.

In fact, when the thread bar 60 or steel bar is used as in the present embodiment, there may be a considerable risk in safety when cutting it as in the prior art, in the case of the present embodiment, since the tension coupler 70 is used, It can be secured by tightening it in place and removing it later.

The tension coupler 70 connects the head 60a of the steel bar or the thread bar 60 from both sides to transmit tensile force, but has an inner socket 71 separated into two parts, and an inner socket 71 separated into two parts. When supporting the pretension tension, the inner socket 71 includes an outer socket 72 for wrapping and fixing the inner socket 71 so that the inner socket 71 can be fixed.

In detail, the tension coupler 70 must be heat treated. Only then can the strengths required by the structure be met and the appropriate tensile forces delivered.

In the manufacturing of the tension coupler 70, the corner portion by processing should be chamfered. Only then can workers be injured. In the drawings, reference numerals for chamfering portions are omitted for convenience.

When using the tension coupler 70, a sample should be selected for tensile testing, and the strength and presence of deformation of the tension coupler 70 should be checked. Otherwise, if the tension coupler 70 is deformed, it may not provide the proper level of tensile force required in the process, which may be a detrimental factor to the overall structure rigidity.

After mounting the tension coupler 70 having such a feature, if you want to release later, you must proceed sequentially from the tension side, at this time, the presence of the residual tensile force of the connection must be checked. Forcibly releasing the tension coupler 70 may cause deformation in the tension coupler 70 or cause deformation of the surrounding structure, which may be a detrimental factor in the structure stiffness.

If it is not separated when the tension coupler 70 is released, it may be desirable to release the tension coupler 70 after removing residual tension force or removing residual tension force by using a product without applying excessive force or force.

 Of course, the tension coupler 70 need not be used when manufacturing one pretensioned deck through the semi long line mold 1 of this embodiment.

A method of manufacturing a pretensioned deck using the mold 1 having such a configuration will be described below with reference to FIG. 7.

First, after carrying out the foundation work step (S11) to proceed to the foundation work, the tension support H-shaped steel mounting step for mounting the tension support H-shaped steel (10) as a reinforcement plate for tension support on the surface on which the foundation work is carried out ( Proceed to S12). The number of uses of the tensile support H-shaped steel 10 may be appropriately changed depending on the size of the pretensioned deck to be manufactured.

Next, the compression supporting H-shaped steel mounting step (S13) for mounting the compression-supporting H-shaped steel 20 for compression support to the tensile support H-shaped steel 10 to cross. Then, in order to manufacture a pretensioned pretensioned deck, a formwork step (S14) of mounting the formwork 30 to form a curing space of concrete on the H-shaped steel 20 for compression support is performed.

Next, the reinforcement reaction stage mounting step for mounting the reinforcement reaction table 40 on both sides of the tension support H-shaped steel 10 and the compression-supported H-shaped steel 20 so that pretension can be formed on the pretensioned deck (S15) Proceed).

Next, proceed to the steel bar and rebar arrangement step (S16) for placing the steel bar and the reinforcing bar (see Figure 4). In this case, the steel bar may be the thread bar 60 described above. After the rods and reinforcing bars are placed, the rod tensioning step (S17) of tensioning the rods is performed. In this case, a separate tensioner 80 (see FIG. 1) may be used.

After tensioning the steel rod proceeds to the concrete placing step (S18) to pour concrete into the formwork 30, and proceeds to the concrete curing step (S19) for curing the poured concrete. Concrete curing can proceed regardless of outdoor conditions, ie snow or rain.

When the curing process is completed after time, the tension coupler release step (S20) for releasing the tension coupler 70 is performed.

If you want to remove the tension coupler 70 must be removed sequentially from the tension side, and the presence of the remaining tensile force in the connection portion of the tension coupler (70). In addition, the swash plate must be removed before the tension is removed.

If there is difficulty in releasing the bolt when removing the tension force, the nut at the fixed end should be loosened to reduce the tension force and not be excessively released. The operator should continue to check the tension during tensioning, bar displacement, tension coupler coupling error and deformation. Before work, the horizontal before and after the reinforcement reaction band 40 should be checked. If excessive deformation occurs, the work should be stopped and reported to the manager.

On the other hand, as described above, if the tension coupler 70 is not used, step S20 is omitted. Then, finally, the deck can be demolded and placed (S21) to obtain the desired pretensioned deck.

By performing the same method as in the present embodiment, since the pre-tensioned deck of the unit size required in the process is possible, the factory can be manufactured unlike the conventional art, and since the preparation of the pre-tensioned deck is possible with only a simple and simple facility. It is mobile and can work in any place.

In addition, it is possible not only to manufacture pretensioned decks in small-scale factory facilities, but also to produce factories especially, so that pretensioned decks can be easily manufactured regardless of curing or rain or snowy outdoor environment. It will be able to secure a competitive edge.

As described above, according to the present invention, a pre-tension of various shapes is utilized by utilizing a semi-long line mold (1), which is a workbench that is economical and easy to install and dismantle because it does not need a large site and a fixed facility as in the prior art. The absence of corrosion protection, especially pretensioned decks, can be easily produced at the plant or site, eliminating prestressed concrete design constraints.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

10: H section steel for tensile support
20: H section steel for compression support
30: Form
40: reinforcement reaction table
50: connector
60: threaded bar
70: tension coupler
80: tensioner

Claims (14)

A tensile support including a tensile support H-shaped steel mounted for tensile support on a work base on which the foundation work is advanced;
A compression support portion mounted on an upper portion of the tension support portion and including an H support steel for compression support;
A formwork disposed on the compression support for forming a pre-tensioned deck of a pretension method to form a curing space of concrete; And
For pre-tension type member free movement and installation characterized in that it comprises a reinforcement reaction band disposed on both ends of the tension support and the compression support while supporting the tension generated when the tension is introduced to the pre-tension deck bench.
The method of claim 1,
The pretension-type member worktable may be moved to a work position after being manufactured in a factory, and may be moved to a work position after being manufactured on an open-air pretension-type member. Workbench for production.
The method of claim 1,
The reinforcement reaction table is a work table for free-moving and installation free tensioning member, characterized in that the reinforcement of the reinforcement concrete.
The method of claim 3,
It is installed on the top of the reinforcement reaction band but further includes a thread bar (thread bar) for supporting the tension force generated when the tension is introduced into the tension support H-beam and COUPLE,
Compression force due to tension is supported by the H-shaped steel for the compression support, the worktable for the production of free-tension member free movement and installation.
5. The method of claim 4,
The thread bar is connected to the tension coupler, the worktable for free-moving and installable member manufacturing platform, characterized in that the connection.
The method of claim 5,
The tension coupler,
An inner socket connected to the head of the thread bar to transfer tension when pretension is introduced, and separated into two parts; And
When the inner socket is divided into two parts to support the pre-tension tension, the outer socket for wrapping and fixing the inner socket so that the inner socket can be fixed, characterized in that the free tension of the movable and installed Workbench for part manufacturing.
The method of claim 5,
The tension coupler is a worktable for pre-tensioning member free movement and installation, characterized in that the heat treatment.
The method of claim 5,
The worktable for free tensioning and moving member manufacturing platform, characterized in that the edge portion by the processing during the manufacture of the tension coupler is chamfered.
The member of the pretension system produced by the work bench of any one of Claims 1-8.
Tensile support H-shaped steel mounting step of mounting the tensile support H-shaped steel as a reinforcing plate for the tensile support on the surface of the foundation work;
A compression supporting H-shaped steel mounting step of mounting the compression supporting H-shaped steel for compression support onto the tensile supporting H-shaped steel;
Forming step of mounting the formwork to form the curing space of the concrete to form the pre-tensioned deck (pre-tensioned deck) of the pre-tensioning on the compression support H-shaped steel; And
And a reinforcing reaction table mounting step of mounting reinforcement reaction bands on both sides of the tension supporting H-beams and the compression-supporting H-beams so that the pretension is formed on the pretensioned deck. A method for manufacturing a pretensioned member utilizing a workbench for fabricating a pretensioned member that can be installed freely.
The method of claim 10,
A steel rod and reinforcing bar arrangement step of arranging steel bars and reinforcing bars after the reinforcing reaction table mounting step;
A steel bar tension step of tensioning the steel bar;
Concrete placing step of pouring concrete into the formwork;
A concrete curing step of curing the poured concrete;
A method for fabricating a pretensioned member utilizing a workbench for free-tensioning and free-standing member fabrication, further comprising deck demolding and stacking steps.
The method of claim 11,
And a tension coupler releasing step of releasing the tension coupler prior to the deck demolding and loading step.
The member of the pretension system produced by the method of any one of Claims 10-12.
The method of claim 13,
The pretensioning member is a pre-tensioned deck having a unit size of the pretensioning member.

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