KR101641339B1 - Device for maintaining distance of concrete mold and method for constructing concrete building - Google Patents
Device for maintaining distance of concrete mold and method for constructing concrete building Download PDFInfo
- Publication number
- KR101641339B1 KR101641339B1 KR1020150058314A KR20150058314A KR101641339B1 KR 101641339 B1 KR101641339 B1 KR 101641339B1 KR 1020150058314 A KR1020150058314 A KR 1020150058314A KR 20150058314 A KR20150058314 A KR 20150058314A KR 101641339 B1 KR101641339 B1 KR 101641339B1
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- South Korea
- Prior art keywords
- rod
- molds
- fastening means
- gap holding
- gap
- Prior art date
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
- E04G17/06—Tying means; Spacers ; Devices for extracting or inserting wall ties
- E04G17/075—Tying means, the tensional elements of which are fastened or tensioned by other means
- E04G17/0755—Tying means, the tensional elements of which are fastened or tensioned by other means the element consisting of several parts
- E04G17/0758—Tying means, the tensional elements of which are fastened or tensioned by other means the element consisting of several parts remaining completely or partially embedded in the cast material
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
The present invention relates to a device for maintaining spacing of a formwork and a method of constructing a concrete structure using the same, and it is possible to easily install and dismantle work by maintaining a gap of a form using a small number of parts and to install and dismantle in a wide space outside the formwork And to ensure watertightness.
The gap holding device for a mold according to the present invention includes spacing rods (10) which are installed between first and second formworks set up with a predetermined interval therebetween, and both sides in the longitudinal direction are protruded through the first and second formworks )and; And a fastening means which is fastened to both sides of the gap holding bar protruded from the first and second molds in the longitudinal direction and supported by the first and second molds to support the gap holding rods, 11), screw portions formed on both sides in the lengthwise direction of the rod body and to which the fastening means are detachably coupled, a pair of inner and outer sides spaced apart from each other by a predetermined distance inward from both longitudinal ends of the rod body (11-2) formed on the outer side including the engaging portion and a buried portion (11-1) buried in concrete by being broken due to rotation or rotation of the fastening means And includes an induction portion 13.
Description
More particularly, the present invention relates to an apparatus and method for maintaining spacing of molds using a small number of parts, as well as facilitating installation and dismounting work, and effectively preventing water from leaking out of the installation space And a method of constructing a concrete structure using the apparatus.
Generally, the most common method of forming various pillars, walls, and the like in construction of civil engineering structures and the like is a method of curing after injecting the concrete into a frame that is constantly woven so as to have a predetermined shape, It takes about two days to remove the mold when it forms a retaining wall.
In this way, the formwork, which is designed to place concrete between a pair of inner and outer panels, must maintain a constant gap between the inner and outer panels until the completion of curing so as not to deviate from the designed dimensions. It is a form spacing maintenance device.
Accordingly, the mold space maintaining device basically has a function of preventing the panels from spreading beyond a predetermined interval when the concrete is laid on the inner and outer sides, that is, fixed on the inner and outer sides, that is, the gantry and the euro foam. .
A conventional apparatus for spacing a concrete pouring formwork related to such a technique is disclosed in Korean Utility Model Registration No. 326109, and its construction is fixed through a first formwork (for example, a gantry) and a second formwork Shaped member having a circular cross-section so as not to spread out beyond a predetermined distance between the first and second molds when pouring, so as to appropriately secure the concrete pouring space between the first and second molds according to the design And has a sufficient length, and at one end, a securing tie is formed through which a securing slot for inserting a fixture is inserted.
A threaded portion is formed at one end of the separator, and a cut groove is formed in the vicinity of the other end where the fixing slot is formed, so that it can be cut after the concrete is poured.
Further, a bolt having a screw thread, a washer, a bracket, a spring, and a hexagon head connut are inserted and inserted into a vertical plate in an integrated assembly form.
However, the above-mentioned die spacing maintenance apparatus is constituted by bolts, connuts, septa, and fasteners, and manufacturing cost is high due to the manufacture of each single item, and each single item must be stored in a disassembled state or stored in combination, .
In addition, since the adjustment of the length of the bolt and the septa for holding the gap is usually performed only on the side of the bolt, the length adjustment operation is very inconvenient, and there is a disadvantage in that the twisting and separation occur between the materials.
In order to solve such a problem, there is an apparatus for maintaining spacing of a concrete form using an integral body bolt registered by the present applicant as a utility model (
As shown in FIG. 1,
Patent Document 2 (Japanese Patent Application No. 10-1320699) discloses a screw threading machine having a threaded rod formed on an outer circumferential surface thereof, a threaded rod fixed to both sides of the threaded rod, supported by a stiffener provided outside the first and second formworks, First and second body bolts, first and second support plates for supporting the first and second body bolts on a stiffener provided on the outside of the first and second molds, And a first and a second fastening nuts for supporting the first and second body bolts to the first and second workpieces through a support plate, wherein the first and second body bolts include first and second body bolts A first and a second connuts respectively formed at opposite ends of the first and second body parts and screwed to the screw threads, and a second cone part having a larger cross-sectional area than the first and second body parts, A first and a second support portions formed in an outer peripheral portion of the first and second body portions, Wherein the first and second support plates include first and second support plate bodies supported by a reinforcing member provided outside the first and second molds, Wherein the first and second screw portions of the first and second main body bolts are formed in the central portion of the main body and the first and second wedge grooves of the tapered section are supported by the first and second support portions in a wedge- The first and second bolts are fastened to the first and second support plates in a wedge-like manner by fastening the first and second fastening nuts, thereby maintaining the gap between the first and second dies.
Since both the screw rods and the two body bolts and the nuts are essential components, the installation and disassembly operations are very cumbersome and complicated, and the bolts of the body are inserted into the molds through the inserted plates (plywood etc.) That is, since the fastening position of the body bolt and the screw rod is a narrow space inside the formwork, it is very difficult to install and the air becomes long.
Also, since the body bolt is embedded in the concrete, there is a problem that the body bolt is not easy to disassemble.
In addition, the mold has a fastening hole for receiving the body bolt. Since the cone nut portion of the body bolt has a large size, a part where moisture can leak becomes large, and it is very difficult to secure the water tightness.
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide an apparatus and a method for installing and dismounting the apparatus in a wide space outside the form, And a method of constructing a concrete structure using the same.
The spacing maintaining device according to the present invention includes spacing rods installed between first and second dies that are spaced apart from each other by a predetermined distance, and both sides of the dies are protruded through the first and second dies. And a fastening means which is fastened to both sides of the gap holding bar protruding from the first and second molds in the longitudinal direction and supported by the first and second molds to support the gap holding rods, A connecting portion formed on both sides of the rod body in the longitudinal direction of the rod body and detachably connected to the connecting means, a connecting portion having a smaller cross-sectional area than the inner and outer sides adjacent to each other at a position spaced inward at both ends in the longitudinal direction of the rod body, And a division inducing unit which is divided into rotation of the fastening unit or rotation of the fastening unit to divide the external part including the coupling part into a buried part embedded in the concrete.
A method of constructing a concrete structure using a mold space maintaining apparatus according to the present invention comprises the steps of setting first and second molds at a predetermined interval from each other and arranging reinforcing bars between the first and second molds, A first step of installing a first electrode; A second step of placing concrete between the first and second molds after completing the first step; A third step of dismantling the space holding device of the mold after the concrete poured through the second step is cured; And a fourth step of demolding the first and second molds after the third step and finishing the surface of the concrete structure, wherein the first step is a step of inserting the spacing rods of the mold- And a waterproof cone coupled to a periphery of the spacing rod is formed on an inner circumferential surface of a fastening hole formed in the first and second fasteners, And the space holding device for the formwork is provided by securing a fastening means to the joint portion of the gap retaining rod and fixing the same to the first and second molds. In the third step, the fastening by the fastening means is performed And separating the gap maintaining rods into a buried portion and a removal portion, and removing and removing the removed portion.
According to the apparatus for maintaining space of a mold according to the present invention and the method of constructing a concrete structure using the apparatus, it is possible to install the mold by maintaining the gap between the mold and the gap- And the disassembly work can be done quickly, so that the air is shortened, and since the assembly position of the gap holding rod and the fastening means is a large space outside the formwork, the worker can install and dismantle without being interfered with the surrounding structures So that it also has the effect of shortening the air.
Also, since the removed portion of the gap holding rod is blocked with concrete through the waterproof cone, the removed portion protruding to the outside of the concrete can be removed by using a small force, so that the quick dismantling is possible.
In addition, since the shape of the fastening hole of the mold passing through the gap retaining rod is small, it is easy to secure watertightness by the waterproof cone, thereby preventing contamination of concrete and form due to leakage of moisture.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a mold space maintaining device according to the prior art; FIG.
Fig. 2 is an exploded perspective view of a mold space maintaining device according to a first embodiment of the present invention; Fig.
3 is a cross-sectional view of a space holding device for a mold according to a first embodiment of the present invention.
4 is a view showing another example of a rotation preventing portion applied to a mold space maintaining device according to
Fig. 5 is another example of fastening means applied to the mold space maintaining apparatus according to
6 is a view illustrating a process of demolding a workpiece by a mold space maintaining device according to a first embodiment of the present invention.
7 is an exploded perspective view of a mold space maintaining device according to a second embodiment of the present invention.
Fig. 8 is an installation state diagram of a mold space maintaining device according to a second embodiment of the present invention; Fig.
Fig. 9 and Fig. 10 are views showing another example of the gap holding rods applied to the mold cavity holding device according to the present invention. Fig.
≪ Example 1 >
As shown in FIGS. 2 and 3, the mold space maintaining apparatus according to the present embodiment is installed between the first and
The
For example, the
The threaded
The threaded
The threaded
When the first and
The
The
The removal part 11-2 is removed by manual operation of the worker. Part of the removal part 11-2 is buried in the concrete. Since the
However, when the fastening
The
When the buried portion 11-1 is rotated together with the removal of the removal unit 11-2 for removal of the removal unit 11-2, the removal unit 11-2 is placed in the buried unit 11-1 In order to prevent this, one or more, preferably two or more,
The
The
The
The
The
The
The
The
The
The
Although the connecting
Also, the fastening means is not limited to the
The spacing
The
The method of forming and demolding formwork using the mold space maintaining apparatus according to the present embodiment is as follows.
1. Installation of 1st and 2nd formwork.
For example, the positions of the first and
2. Install spacing retainer.
A waterproof cone (20) is fitted to the gap maintaining rods (10) and the assembly is installed between the first and second molds (2, 3) (2, 3).
The
3. Remove the spacing retainer.
In the state of FIG. 2, the concrete is laid between the first and
end. Remove the nut.
(A) Remove the nut (33) from the fastening bolt rod (30).
I. Fastening bolt rod rotation.
(B) When the tool 100 (wrench or the like) is connected to the
All. Separation of fastening bolt rods and removing rods.
(C) The
If the
After dismounting the mold space maintaining device according to the present embodiment, the first and
la. deadline.
(D) When the
When the removing unit 11-2 is removed from the concrete, a groove is formed and the surface of the concrete wall is closed by filling the groove with the filling material.
As described above, when the fastening means is the
≪ Example 2 >
As shown in FIGS. 7 and 8, in the mold holding device according to the present embodiment, as compared with the first embodiment, the structure of the
The cavity-holding
The
delete
The
9 and 10 show another example of the rod
10: spacing rod, 11: rod body
12: screw portion, 13: split guide portion
14: tool connecting portion, 15: rotation preventing portion
20: waterproof cone, 21: fastening jaw
30: fastening bolt rod, 40: lock nut
Claims (8)
And a fastening means which is fastened to both sides of the gap holding bar protruding from the first and second molds in the longitudinal direction and supported by the first and second molds to support the gap holding rods,
Wherein the spacing rod comprises a rod body (11), a threaded portion (12) formed on both sides of the rod body in the longitudinal direction thereof and detachably coupled with the fastening means, (11-2) formed on the outer side including the threaded portion by being rotated or rotated by the rotation of the fastening means and a buried portion (11), and a tapered section having a tapered section whose diameter gradually decreases toward the center from the inside of the threaded section, and which is connected to the split induction section and is fastened to the first and second molds A cone portion 17 which is in close contact with the inner circumferential surface of the hole, and a rotation preventing portion 15 formed on the buried portion,
The fastening means is a lock nut (40) or a rod shape which is fastened to the threaded portion of the gap holding rod and is supported by the first and second formwork, one side of which is screwed to the threaded portion of the gap holding rod, (30) supported by the first and second molds,
Wherein the rod main body includes a square tool connecting portion (14) at a portion protruding from the first and second workpieces so that the rod main body is directly turned through the tool connecting portion to remove the removing portion Device.
A waterproof cone (20) coupled to a periphery of the gap holding rod and having an outer circumferential surface in close contact with a fastening hole formed in the first and second molds to block the concrete;
And a fastening means which is fastened to both sides of the gap holding bar protruding from the first and second molds in the longitudinal direction and supported by the first and second molds to support the gap holding rods,
Wherein the spacing rod comprises a rod body (11), a threaded portion (12) formed on both sides of the rod body in the longitudinal direction thereof and detachably coupled with the fastening means, (11-2) formed on the outer side including the threaded portion by being rotated or rotated by the rotation of the fastening means and a buried portion (11), and a rotation preventing portion (15) formed on the buried portion,
The fastening means is a lock nut (40) or a rod shape which is fastened to the threaded portion of the gap holding rod and is supported by the first and second formwork, one side of which is screwed to the threaded portion of the gap holding rod, (30) supported by the first and second molds,
The waterproof cone has a cone shape having a small outer diameter while being directed to one side. A binding jaw (21) is formed at one end of the waterproof cone to be engaged with the split guide portion of the spacer rod, Removed,
Wherein the rod main body includes a square tool connecting portion (14) at a portion protruding from the first and second workpieces so that the rod main body is directly turned through the tool connecting portion to remove the removing portion Device.
A second step of placing concrete between the first and second molds after completing the first step;
A third step of dismantling the space holding device of the mold after the concrete poured through the second step is cured;
And a fourth step of demolding the first and second molds after the third step and closing the surface of the concrete structure,
In the first step, spacing rods (10) of the spacing device of the form are installed in the transverse direction between the first and second formworks (2, 3) A concave portion 17 integrally formed in the periphery of the gap retaining rod or a waterproof cone 20 coupled to the periphery of the gap retaining rod is formed in the outer surface of the fastening hole 2a , 3a), and fastening means is provided on the threaded portion of the spacing rod, and the fastening means is fastened to the first and second molds to provide the gap holding device for the molds,
In the third step, the fastening by the fastening means is released, and the gap maintaining rods are directly or rotated together with the fastening means so that the division inducing portions formed on the gap holding rods are broken, And separating the removed portion and the removed portion from each other, and separating and removing the removed portion.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR20140192522 | 2014-12-29 | ||
KR1020140192522 | 2014-12-29 |
Publications (2)
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KR20160080050A KR20160080050A (en) | 2016-07-07 |
KR101641339B1 true KR101641339B1 (en) | 2016-07-29 |
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KR1020150058314A KR101641339B1 (en) | 2014-12-29 | 2015-04-24 | Device for maintaining distance of concrete mold and method for constructing concrete building |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20220112615A (en) | 2021-02-04 | 2022-08-11 | (주)이알코리아 | Construction method and structure of pre-embedded anchor set for installation of bridge inspection facilities using form tie |
KR20220159321A (en) | 2022-11-15 | 2022-12-02 | 서용섭 | Spacing tool of formwork panel for wall construction |
Families Citing this family (2)
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KR102044796B1 (en) * | 2019-01-14 | 2019-11-14 | 노영곤 | the girder form construction method using the deck composite |
RU202052U1 (en) * | 2020-02-08 | 2021-01-28 | Алексей Викторович Чесноков | CONSTRUCTION SCREED |
Citations (1)
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KR200357636Y1 (en) * | 2004-05-11 | 2004-07-30 | 홍춘희 | a joint for a mold |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2778533B2 (en) * | 1995-07-27 | 1998-07-23 | 芳久 坂本 | Spacing device for formwork structure and method for constructing formwork structure using the same |
KR100633347B1 (en) * | 2004-01-16 | 2006-10-12 | (주)삼아테크 | A bar for having the cutoff-slot, and an apparatus for forming the form of having it |
KR200437568Y1 (en) | 2007-04-03 | 2007-12-11 | 서보산업 주식회사 | A maintain distance device of concrete mold using one piece type bolt |
KR20120124850A (en) * | 2011-05-05 | 2012-11-14 | 주식회사 블루폼 | Coupling unit of panels |
KR101320699B1 (en) | 2012-04-30 | 2013-10-23 | 서보산업 주식회사 | A maintain distance device of concrete mold using one piece type bolt |
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2015
- 2015-04-24 KR KR1020150058314A patent/KR101641339B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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KR200357636Y1 (en) * | 2004-05-11 | 2004-07-30 | 홍춘희 | a joint for a mold |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20220112615A (en) | 2021-02-04 | 2022-08-11 | (주)이알코리아 | Construction method and structure of pre-embedded anchor set for installation of bridge inspection facilities using form tie |
KR20220159321A (en) | 2022-11-15 | 2022-12-02 | 서용섭 | Spacing tool of formwork panel for wall construction |
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KR20160080050A (en) | 2016-07-07 |
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