JPH0658049U - Structure of pillar formwork - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] A structure of a pillar formwork that can cope with changes in the cross-sectional dimension of the pillar. (1) The stock space is reduced by reducing the type and amount of formwork materials. To be small. (2) Do not become an obstacle even if people or objects move around the pillar formwork.
(3) Make sure that there is no change in the accuracy of the structure before and after placing concrete. (4) It is to provide a structure of a pillar formwork that can realize shortening of the time of installation and adjustment. [Structure] In the structure of the pillar formwork capable of coping with the change in the cross-sectional size of the pillar, a combination of the standard formwork material 1 and the small formwork materials 2 and 3 having several kinds of dimensions, and the building adjustment Structure with a horizontal form frame holding member 6a, 6b whose length can be adjusted integrally with the support 7 and a column form having a jig for holding the position of the column main bar attached to the top of the form Is the structure of.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure of a reinforced concrete pillar formwork, and more particularly to a structure of a pillar formwork capable of coping with a change in the cross-sectional dimension of the pillar.

[0002]

[Prior art]

 In the past, for reinforced concrete pillar formwork, formwork materials were manufactured according to the cross-sectional dimensions of the pillar, and the formwork was assembled. That is, as shown in FIG. 4, it comprises a weir plate 4 having a predetermined size, a vertical form frame pressing member 5, a horizontal form frame pressing member 14, a building support chain support 15, etc. It is manufactured, assembled and used each time.

[0003]

[Problems to be solved by the device]

 In the conventional pillar formwork as described above, (1) the type of formwork material increases when the cross section of the pillar is different, (2) the area of the stock field of the formwork material increases, (3) building adjustment Installation adjustment materials such as chain support for buildings spread radially around the pillars, which poses a problem such as obstacles when people and things move.

In particular, in the HRPC method in which concrete placement is divided into columns, beams, and slabs, the column form set and dismantling occupy an important position in the body cycle process. It is necessary to smoothly carry out a series of work including setting of concrete, pouring concrete, and dismantling and removing formwork. Therefore, in this case, it is necessary to systematize the pillar formwork, but the specific problems at that time are summarized in the following three points.

That is, (a) the cross-sectional dimension of the pillar is, for example, 950 × 950 on the 2nd and 3rd floors, 900 × 900 on the 4th to 9th floors, 850 × 850 on the 10th to 16th floors, and 800 × 800 on the 17th to 21st floors. And change in 4 steps and become smaller. (b) If radial support and chains are used for building adjustment, it will hinder the movement of the electric elevator used during concrete pouring, and it will be difficult to secure a safety passage. (c) The column formwork requires a high degree of accuracy because it has a structure in which the PC beam is placed on the column head, but the column rebar also has a very large diameter and uses mechanical joints. Therefore, it is desirable to determine the position of the rebar with the formwork.

The present invention has been made in view of the above problems as a structure of a pillar formwork capable of coping with the case where the cross-sectional dimension of the pillar changes, and its object is (1) formwork material. To reduce the size and stock of the plant to make the stock field small. (2) Even if a person or thing moves around the pillar formwork, it should not be an obstacle. (3) Make sure that there is no change in the accuracy of the structure before and after placing concrete. (4) It is to provide a pillar formwork structural system that can realize reduction of installation and adjustment time.

[0007]

[Means and Actions for Solving the Problems]

 The present inventor has made various studies on solving the above-mentioned problems. As a result, (a) combining a standard size form material and a small size frame material of several kinds of sizes, (b) integrated with a building adjustment support. We paid attention to the use of a horizontal formwork holding material whose length can be adjusted, and (c) attaching a jig that holds the position of the column main bar to the top of the formwork.

The present invention is based on the above idea, and the gist thereof is a structure of a pillar formwork capable of coping with a change in the cross-sectional size of a pillar, and is composed of a standard-size formwork material and several kinds of sizes. A structure of a pillar formwork consisting of a combination of small formwork materials, a horizontal formwork holding material with an adjustable length that is integrated with a construction adjustment support, and a jig that holds the position of the main pillar reinforcement on the top of the formwork. It is the structure of a pillar formwork that consists of being attached.

The present invention is the structure of the pillar formwork used when the cross-sectional size of the pillar becomes gradually smaller as it goes to the upper floors as described above. Then, by combining various standard formwork frame materials as the formwork material and small framework materials of several sizes such as widths of 50 m / m and 100 m / m as the formwork material at the corners of the pillars, it is possible to change the dimension of the pillar cross section. Corresponding. Furthermore, in order to respond to the dimensional changes in the cross section of the column, the length of the horizontal form frame retainer can be adjusted, and a support for building adjustment is incorporated. Then, the column formwork is systemized by combining the horizontal formwork holding material and the formwork material described above.

As the above-mentioned small frame material, timber of each size to which plywood is attached is used. Then, according to the dimensional change of the cross section of the column, the above-mentioned standard size mold material and small frame material are used in combination. The length of the horizontal frame holding material is L-column type using square pipes, and it can be freely slidably inserted in the facing face of each side. It shall be possible to adjust and fix according to the dimensional changes of. With such a structure of the frame material, the type and amount of the frame material can be reduced and the stock field can be made small.

[0011] Furthermore, the building adjustment support is mainly incorporated for pulling, and four small diameter bracket supports are attached to the square pipe of the horizontal form holding material described above to be integrated with the system form. Use the screws of the floor anchor metal part for fine adjustment. Then, it is preferable that the angle be tensioned parallel to the pillar surface so as not to hinder the movement of the electric elevator and the person. In this way, if the support and the system formwork are integrated, it is easy to disassemble and move.

Next, in the present invention, a jig for holding the column main bar position is attached to the top of the mold. This is because the structure is one in which the PC beam is placed on the stigma, and high precision is required. Therefore, to secure this precision, the positions of the reinforcing bars are decided by the formwork. That is, jigs for holding the positions of the column main bars are attached to the four protruding corners of the top of the column form.

[0013]

EXAMPLES The present invention will be described based on examples below. FIG. 1 (1) shows a standard-size mold member 1 and small-size frame members 2 and 3 used in the construction of the column mold according to the present invention. In other words, a standard size formwork material 1 consisting of a weirboard 4 and a vertical formwork retainer 5 of a predetermined size, and a timber 5a with a width of 50 m / m and a plywood 4a as a formwork material at the corner of the pillar. And a small frame material in which a plywood 4b is attached to a timber 5b having a width of 100 m / m.

FIG. 1 (2) shows the structure of a pillar formwork in which the above-described various formwork materials are combined, and is an example of the pillar formwork in which the cross-sectional dimension of the pillar is 950 mm. This pillar formwork is constructed by combining the formwork material 1 of the standard size and the small formwork materials 2 and 3 and pressing them with horizontal formwork holding members 6a and 6b. The horizontal form frame pressing members 6a and 6b are L-shaped column type members using square pipes, and they are freely expandable and contractable so that they can be slidably inserted into each other on opposite sides, and the column holes are formed using pin holes 6c and wedges. It can be adjusted and fixed according to the dimensional changes of the cross section. Further, the installation of the support for building adjustment is carried out by installing four small-diameter bracket supports 7 on the square pipes forming the horizontal frame pressing members 6a and 6b in parallel with the pillar surface as a whole. The structure is integrated with the frame, and the screws of the floor anchor metal part 8 are used for fine adjustment.

Next, (3), (4), and (5) of FIG. 1 show a part of the configuration of the column formwork corresponding to the case where the dimension of the column cross section changes to 900 mm, 850 mm, and 800 mm, respectively. Is. That is, FIG. 1 (3) shows an assembly in which a quasi-sized mold material 1 and a small frame material 3 are combined and pressed by a horizontal mold holding material 6a or the like. Similarly, FIG. 1 (4) shows an assembly in which a standard-size mold material 1 and a small-size frame material 2 are combined and held by a horizontal mold holding material 6a and the like, and FIG. 1 (5) is a semi-dimension mold. The figure shows an assembly in which only the frame member 1 is used, and the frame member 1 is pressed by the horizontal frame pressing member 6a or the like. In addition, in the figure, 7 is a bracket support for building adjustment.

FIG. 2 shows the above-mentioned horizontal form frame pressing members 6a and 6b. These horizontal form frame pressing members 6a and 6b are L-shaped column type using square pipes and can be slidably inserted into each other. It can be fixed and adjusted by using the pin hole 6c and the wedge 9 according to the dimensional change of the column cross section. In FIG. 2, reference numeral 5 is a vertical mold holding material of a standard size mold material. Further, (1) and (2) of FIG. 3 are a plan view and a side view showing a state in which a jig 12 for holding the position of the column main bars 11 is attached to the top of the mold 10. That is, since the column main bar 11 is assembled in advance and bound by the hoop bar, it moves as a whole when pouring concrete, but fine adjustment is performed by inserting a wedge into the jig 12a. In the figure, 13 is a hinge to which the jig 12 is attached, and the plate of the jig 12 is returned by this hinge when the pillar form frame is disassembled. And 12b is a hole for venting air and confirming concrete.

[0017]

[Effect of device]

 The structure of the pillar formwork according to the present invention is a combination of a standard size formwork material and a small formwork material of several sizes, and a horizontal formwork retainer with an adjustable length that is integrated with a construction adjustment support. The structure of a pillar formwork made of material and a jig for holding the position of the main pillar of the pillar are attached to the top of the formwork. According to the present invention, the pillar formwork is adapted to the change in the cross-sectional dimension of the pillar. It is possible to build and adjust the frame in a relatively short time. In addition, since the type and amount of form material can be reduced, it is possible to make the stock yard of these materials small. Furthermore, the construction adjustment support is integrated with the form and parallel to the pillar surface, so it is easy to disassemble and move, and it does not hinder the movement of the electric lift and people. Since fine adjustments can be made to ensure the accuracy of the column rebars, it is possible to prevent the accuracy of the skeleton from changing before and after placing concrete. Therefore, the effect of the present invention is remarkable.

[Brief description of drawings]

FIG. 1 (1) is a plan view showing a standard size mold material and two types of small frame materials used in the construction of a pillar mold according to the present invention, and FIG. 1 (2) is the present invention. The top view which shows an example of the structure of the said pillar formwork, (3) of FIG. 1, (4), (5) is a top view which shows the structure of the pillar formwork corresponding to the case where the dimension of a pillar cross section changes, respectively. Is.

FIG. 2 is a plan view showing a connecting portion of an L-shaped column using a square pipe of a horizontal form pressing member according to the present invention.

3 (1) and 3 (2) are a plan view and a side view showing a state in which a jig for holding the position of the column main bars is attached to the top of the column form.

FIG. 4 is a plan view showing an example of a conventional reinforced concrete pillar formwork.

[Explanation of symbols]

1 Standard size form material 2, 3 Small size frame material 4 Weir board 5 Vertical form material 6a, 6b Horizontal form material 7 Bracket support 8 Floor anchor metal part 9 Wedge 10 Form 11 Column main bar 12 Column rebar holding jig 13 hinge 14 horizontal formwork holding material 15 chain support

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Katsushi Kitajima, Katsunobu Kitajima 2-2, Kita 3-jo Higashi, Chuo-ku, Sapporo Toda Construction Co., Ltd. Sapporo Branch (72) Yukio Kikuhara 16-14, 6 cold weather, Nishi-ku, Sapporo No. 50 in Japan Temporary Corporation

Claims (2)

[Scope of utility model registration request] 1. A structure of a pillar formwork capable of coping with a change in the cross-sectional size of a pillar, in which a formwork material having a standard size and a small frame material having several kinds of sizes are combined with each other, and a construction adjustment support. A column formwork structure characterized by comprising a horizontal formwork holding material whose length is adjustable integrally with 2. A structure of a pillar formwork capable of coping with a change in the cross-sectional size of a pillar, in which a formwork material having a standard size and a small frame material having several kinds of sizes are combined with each other, and a construction adjustment support. A structure for a pillar formwork, characterized in that the pillar formwork is composed of a horizontal formwork holding material whose length is adjustable, and a jig for holding the position of the main pillar of the pillar is attached to the top of the formwork.