KR102358994B1 - Cast-In-Place Anchors System - Google Patents

Abstract

The present invention relates to an anchor mounting device pre-embedded in concrete, which is buried and installed when a concrete structure is constructed to more easily install and construct a bridge inspection facility, is easily temporarily installed and removed by being coupled to an inner surface of a formwork without penetrating the formwork, and improves the coupling reliability on an inspection facility through permanent pre-embedding. According to the present invention, the anchor mounting device comprises: an insert part having a concave groove with a screw thread formed on an inner surface of one side and one or more tapered portions formed on an outer surface of the other side; a fastening cap part including a cover part having one end in contact with a formwork, a bolt part protruding from the center of the inside of the cover part to one side, and an insert insertion part extending from the other end of the cover part and formed with a recessed groove on an inner surface to allow one side of the insert part to be inserted thereinto; and a nut socket fastened to the bolt part of the fastening cap part, and welded to the formwork.

Description

Concrete pre-embedded anchor anchoring device {Cast-In-Place Anchors System}

The present invention relates to a concrete pre-embedded anchor anchoring device (A), and in detail, a pre-embedded anchor anchoring device that is embedded and installed during concrete structure construction so that the installation and construction of bridge inspection facilities can be made more easily without penetrating the formwork, It relates to a device that is easy to temporarily install and remove by bonding to the inner surface of the form, and improves the reliability of bonding to inspection facilities through permanent pre-burial.

Patent Document 001 relates to an embedded anchor that is embedded and installed during construction of a concrete structure in order to construct facilities such as an inspection road in the concrete structure, and a construction method thereof, in which a breaking ring is inserted so as to be caught on a temporary fixing bolt that is helically coupled to a connection socket. Recessed anchor provided with a form coupling plate, and by combining the form coupling plate with the surface of the metal formwork so that only the connection socket to which the temporary fixing bolt is coupled is embedded in the concrete structure while the form coupling plate is released together when the form is demolded and to a construction method thereof. The embedded anchor of the present invention includes a support plate in which a plurality of socket mounting holes are formed to be spaced apart from each other at intervals set in the horizontal and vertical directions on the surface; a connection socket fitted with each of the socket mounting holes to be horizontally coupled, an inner spiral portion having threads on the entire inner circumferential surface or both sides is formed, one end of which is coupled with an anchor bolt so as to be spirally coupled to the inner spiral portion; A bolt insertion hole is formed in a portion corresponding to the connection socket, and a breaking ring support bracket communicated with each bolt insertion hole and formed at the end is coupled on one side, and is welded to the corresponding surface of the metal formwork during formwork construction. formwork bonding plate; a coupling plate fixing bolt inserted into the other end of the connection socket through the bolt insertion hole and helically coupled to the inner spiral portion; It is inserted into the bolt insertion hole, and one edge part is supported by the breaking ring support bracket, and a locking band is formed on one edge to prevent the head part of the coupling plate fixing bolt from being caught and pulled out. It is formed to release the locking state, and on one side of the inner side, a breaking ring having a head portion guide space formed with an inner diameter larger than that of the head portion so that the head portion comes out when the locking belt is broken.

Patent Document 002 relates to an embedded rotary detachable fixed support device for a bridge inspection facility and a construction method therefor. When it is necessary to change the attachment position of the fixed support to the steel formwork, the strength and weakness of magnetic force can be adjusted through the rotation of the magnet module, so that the operator can correct and conveniently adjust the binding position of the fixed support without difficulty. As a technical means for implementing this, when the concrete is poured on the pier, it is magnetically attached to and fixed to the iron formwork and positioned inside the pier, while the outside is open and the inner side protrudes toward the pier and the sealed magnetic module chamber is formed in a single or multiple support body; Inserted from the outside open to the magnet module chamber, the central rotation shaft is bound to the outside through the central shaft fastening hole, and the module rotation bolt is fastened from the opposite pier side. A rotation control plate that is moved at intervals while being moved, and a plurality of magnet binding grooves are formed while being screwed to the outside of the rotation control plate, and a plurality of permanent magnets exhibiting strong magnetic force are respectively screwed into the magnet binding grooves; a bridge; During the installation of the check stand, the bolt means for bolting the fixing bracket, which is the end of the scaffold support, is fastened and protrudes toward the inside of the pier at the position of the bolt fastening hole penetrating through the support body so that it is firmly fixed and supported against the pier cured during concrete pouring. A fixed support that is magnetically attached to the steel form is composed of a bolted rod that is basically included.

Patent Document 003 relates to a method of constructing a bridge inspection facility using a pre-buried anchor. During the construction of the bridge inspection facility, the anchor panel is pre-installed in the pier in the buried form, so that the fixed installation work of the inspection passage bracket is more efficient. in order to make it happen. The construction method of the present invention for realizing this includes a formwork installation step of installing the formwork on the upper part of the pier; An anchor panel installation step of attaching and installing an anchor panel having a plurality of bolt holes formed on the inner wall surface of the formwork; coupling an anchor coupler of a certain length to the anchor panel, the anchor coupler fastening step in which a support rod is connected to the rear end of the anchor coupler; a rebar welding step of welding and fixing reinforcing bars to the support bar; a concrete pouring step of pouring concrete into the formwork; a formwork removal step of removing the formwork after curing the poured concrete to expose the anchor panel; and an inspection passage installation step of bolting the inspection passage bracket to the exposed anchor panel.

Patent Document 004 discloses a circular tube body embedded in concrete, a pre-installed anchor coupler in which an inner screw portion is formed and a plurality of outer locking rings are protruded from the outer surface; A bolt embedded in concrete, located on the rear side of the pre-installed anchor coupler, a fastening screw part screwed to the rear inner screw part is formed on one outer periphery, and a bolt fastening hole having an inner thread is formed in the center of one front end surface. and a stud bolt having a bolt head formed at the other end; A bolt head is formed at one end, a bolt through hole formed inwardly in the center of the front end of the bolt head is formed, a bolt head insertion hole having a diameter larger than that of the bolt through hole is formed at one end of the bolt through hole, and on the outer periphery of the other side, the pre-installed anchor An anchor bolt having an outer screw portion screwed to the inner screw portion of the coupler is formed; and a long bolt inserted into the bolt through hole of the anchor bolt. At one end, a locking head is formed to be inserted into the bolt head insertion hole and locked, and a tool insertion groove is formed in the front end surface of the locking head to insert and lock a tool. and the bolt leg part penetrates the bolt through hole and protrudes to the outside, and on the outer periphery of the other end, a fastening screw part screwed to the bolt fastening hole thread of the stud bolt is formed. It's about bolts. The present invention provides a locking device that penetrates the anchor bolt and is fixed to the stud bolt through the pre-installed anchor coupler and the stud bolt inserted in advance to prevent loosening by the insert bolt, which is fastened to the stud bolt even in the concrete buried space. It works.

KR 10-2002879 B1 (registration date July 23, 2019) KR 10-2077307 B1 (registration date February 07, 2020) KR 10-2181972 B1 (registration date November 17, 2020) KR 10-2236908 B1 (registration date March 31, 2021)

In general, in operating structures constituting social infrastructure such as bridges, in order to inspect the public state, it is essential to install an inspection facility for the inspector to access the location where inspection is required. Conventionally, after forming a structure such as a bridge, after forming an anchor groove in the structure, the anchor is mechanically inserted and fastened, or the anchor hole is filled with a chemical material such as epoxy to fix the anchor, and facilities for inspection have been installed. This post-construction method cannot secure the reliability of structural and chemical bonding with the material of the structure to be applied, and the reality is that the workability for forming anchor holes in the concrete structure after curing is very poor. During the inspection of the operator, the fall accident caused by the dropout of the inspection equipment has caused numerous casualties and is still ongoing. In order to solve this problem, pre-buried anchors have been developed and used in part, in which the anchors are buried in advance before the structure is formed. There has been a problem in that the formwork needs to be repaired after demolding. In order to solve this problem, the present invention intends to propose a configuration of a pre-buried anchor anchoring device located on the inner surface of the form, without passing through the form.

The present invention relates to a concrete pre-embedded anchor fixing device, and specifically, an insert having a concave groove having a threaded thread on one inner surface, an insert having one or more side cross-sections formed on the other outer surface, and a cover portion having one end in contact with the formwork and the above A bolt part protruding from the inner center of the cover part to one side and extending from the other end of the cover part, a fastening cap part comprising an insert insert part into which one side of the insert part is inserted by forming a recessed groove on the inner surface, and the fastening cap part It is fastened to the bolt part, and includes a concrete pre-embedded anchor anchorage device including a nut socket welded to the formwork.

The present invention relates to a concrete pre-embedded anchor anchoring device, and in the invention presented above, the side cross-section portion is formed with a cross-section larger than the outer surface of the insert portion, and the cross-section is enlarged in the direction of the concave groove.

The present invention relates to a concrete pre-embedded anchor anchoring device, and in the invention presented above, one end of the cover part of the fastening cap includes being supported on the same plane as one end of the bolt part.

The present invention relates to a concrete pre-embedded anchor fixing device, and in the invention presented above, one end of the cover part of the fastening cap part comprises that one end is formed to protrude from the one end of the bolt part.

The present invention relates to a concrete pre-buried anchor anchoring device, and in the invention presented above, the tip of the bolt part of the fastening cap includes forming a breaking part that is broken under a certain load or more.

The present invention relates to a concrete pre-embedded anchor anchorage device, and in the invention presented above, one or more protrusions are formed on the outer surface of the insert insertion part of the fastening cap part.

The present invention relates to a concrete pre-embedded anchor anchorage device, and in the invention presented above, the fastening cap part includes an engineering plastic.

The present invention relates to a concrete pre-embedded anchor anchorage device, and in the invention presented above, the nut socket includes one or more welding grooves on the outer surface.

The present invention relates to a concrete pre-embedded anchor anchoring device, and in the invention presented above, the nut socket is demolded together with the formwork after concrete pouring and curing, and the bolt part is broken and embedded in the nut socket during demolding. do.

The present invention relates to a concrete pre-embedded anchor anchoring device, and in the invention presented above, a chemical injection cap is inserted inside the cover part of the fastening cap part embedded in the concrete after demolding the formwork, and the inside of the cover part and the Between the caps for chemical injection, chemical epoxy is filled and cured.

It is possible to secure the reliability of the installation of the inspection facility to be connected by using the concrete pre-embedded anchor fixing device of the present invention, and it is possible to install it at an appropriate location necessary without considering the shape of the formwork, thereby improving the efficiency during construction, , it is possible to minimize the damage to the formwork after demolding, so it is possible to secure the economic effect of improving the service life of the formwork.

1 is an assembly view of the concrete pre-embedded anchor fixing device of the present invention when fixing the formwork.
Figure 2 is an assembly view after demolding of the concrete pre-embedded anchor anchorage of the present invention.
3 (a), (b) is a perspective view and a cross-sectional view of the insert.
Figure 4 (a), (b) is a perspective view and a cross-sectional view of the fastening cap.
5 (a), (b) is a nut socket perspective view and a cross-sectional view.
Figures 6a to 6g is a flow chart of the construction process of the concrete pre-buried anchor anchoring device.

Hereinafter, the most preferred embodiment of the present invention will be described in detail in order to explain in detail enough that a person of ordinary skill in the art can easily carry out the present invention. Citation relationships in the following examples are merely numbers presented to aid technical understanding, and other non-quoted examples may be cited. Even a configuration not specified in the following embodiments may be substituted with a target exhibiting a similar purpose and effect. A sub-concept configuration not specified in the following embodiments is considered to be specified.

[Example 1-1] The present invention relates to a concrete pre-embedded anchor fixing device, and specifically, an insert having a concave groove formed with a thread on one inner surface, and an insert having one or more side cross-sections formed on the other outer surface, and one end A fastening consisting of a cover part in contact with the mold, a bolt part protruding from the inner center of the cover part to one side, and an insert insertion part extending from the other end of the cover part, and forming a recessed groove on the inner surface, into which one side of the insert part is inserted. Concrete pre-embedded anchor fixing device comprising a cap portion and a nut socket fastened to the bolt portion of the fastening cap portion and welded to the formwork.

The present invention is an invention of a concrete pre-embedded anchor anchoring device (A), and the concrete (C) pre-embedded anchor fixing device configuration is provided in the form of being attached to a formwork (M) before concrete pouring when a reinforced concrete structure is manufactured. It is a device that is pre-buried and fixed in concrete (C). The concrete pre-embedded anchor fixing device is largely formed of an insert part 100 , a fastening cap part 200 , and a nut socket 300 when fastening with a formwork. The insert part is a member that is embedded in the concrete (C) structure and is connected to the inspection facility connected to the outside of the concrete structure in the future by bolts and substantially supports the load of the inspection facility. The insert part 100 is provided with a concave groove 110 in which a thread is formed on one inner surface in detail, and at least one side end face part 120 is formed on the other outer surface. The concave groove 110 is formed on one side of the insert part and a thread is formed on the inner surface, through which the bolt passing through the inspection facility to be mounted after demolding the form (M) in the future is fastened. On the outer surface of the other side of the insert part 100, one or more side sectional parts 120 may be formed in order to secure a cross-sectional area combined with the concrete C to be poured. The side end surface portion 120 is formed to protrude from the reference shape of the insert portion or to be recessed to increase the cross-sectional area bound to the concrete material to achieve an integrated behavior, thereby securing reliability of bonding.

Next, the fastening cap part 200 is provided at the tip of the insert part 100 and is a member for fixing the insert part to the mold M through a nut socket 300 to be described later. The fastening cap part 200 includes a cover part 210 having one end in contact with the formwork to prevent the concrete C from being drawn into it, a bolt part 220 protruding from the center of the cover part to one side, and the cover part ( It is formed to protrude from the other end of the other end to the other side, and is composed of an ansert insertion part forming a recessed groove 231 therein. The cover part of the fastening cap part 200 is formed to have a space inside, so that the bolt part 220 having a screw thread formed in the center may be embedded therein. This is to secure a space for fastening with the nut socket 300 to be described later and to prevent concrete from penetrating into the joint space between the bolt part and the nut socket 300 when the concrete C is poured in the form M. The insert insertion part 230 extending from the other end end of the cover part 210 to the other side forms a recessed groove 231 into which one side of the insert described above can be inserted, and when installed in the formwork, the insert part 100 and The fastening cap part 200 is coupled while being connected together. A nut socket 300 is provided on the front surface of the fastening cap part for installing the concrete pre-embedded anchor anchorage device (A) by direct fastening with the actual formwork (M) before pouring concrete for the formation of the concrete (C) structure, The nut socket 300 is fastened to the bolt part 220 described above, and is fastened by being welded to the mold.

[Example 2-1] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, the side end face portion is formed in a cross-section larger than the outer surface of the insert portion, and the cross-section in the direction of the concave groove This includes magnification.

[Embodiment 2-2] The present invention relates to a concrete pre-embedded anchor anchorage device, and in Embodiment 2-1, one or more of the side cross-sections are formed to be larger toward the other end.

[Embodiment 2-3] The present invention relates to a concrete pre-embedded anchor anchoring device, and in Example 2-1, one or more of the side cross-sections are formed to be thicker toward the other end.

[Example 2-4] The present invention relates to a concrete pre-embedded anchor anchorage device, and in Example 2-1, the end of the insert part includes a hook member extending and formed.

[Embodiment 2-5] The present invention relates to a concrete pre-buried anchor anchoring device, and in Embodiment 2-4, the hook member includes the insert portion and the coupler extending.

Among the construction of the concrete pre-embedded anchor anchoring device, the insert part 100 is permanently buried in the structure by pouring concrete, so it is very important to improve the bondability with the concrete (C) structure. Accordingly, the outer surface of the insert part 100 may be formed with the side end surface part 120 to improve the binding force with the concrete. The side cross-section may be formed in a cross-section that is larger than the outer surface of the insert part 100 . The side section 120 is manufactured in an optimal shape to prevent pulling-out, etc. by the load of the inspection equipment installed on the outer surface of the concrete (C) structure, and is provided with a section that gradually expands in the direction of the opening groove in detail, or , a funnel (cone), etc. can be applied in a resistive shape. In addition, the enlarged side section 120 may be formed in one or more plural, which may be applied in a form in which one reference cross-section is gradually increased or decreased, and a method of changing the thickness or size in stages may be used. . In addition, the insert part 100 may be formed by extending a hook member that can be bound to the reinforcing bar inside the concrete (C) structure at the other end of the insert part, and may be formed by extending the length with a bolt or the like. . The hook member and the bolt have a shape that is basically screwed together for fastening with the insert part 100 , and may be extended by welding or using a separate connecting means such as a coupler.

[Example 3-1] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, one end of the cover part of the fastening cap part is supported on the same plane as one end of the bolt part. .

[Embodiment 3-2] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, one end of the cover part of the fastening cap part is formed to protrude from one end of the bolt part.

[Embodiment 3-3] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 3-2, when the bolt part of the fastening cap part is fastened with the nut socket, the cover part is deformed and the space of negative pressure includes forming

[Embodiment 3-4] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, the cover part of the fastening cap part includes a cone shape.

[Example 3-5] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, the cover part of the fastening cap part includes a hemispherical shape.

[Example 3-6] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, the cover part of the fastening cap part includes a corrugated tube shape.

[Example 3-7] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, an elastic ring is formed at one end of the cover part of the fastening cap part.

Among the construction of the concrete pre-buried anchor fixing device, the fastening cap part 200 is composed of a cover part 210, a bolt part 220, and an insert insertion part 230, and the cover part is supported on the inner surface of the formwork (M), and inside It is supported on the same plane as one end of the formed bolt part 220 . In detail, one end of the cover portion 210 and one end of the bolt portion are simultaneously supported on the inner surface of the formwork, which is a nut socket 300 welded to the inner surface of the formwork (M) and the bolt portion 220 screwed together. This is to indirectly check the fastening depth, and when one end of the cover part comes into contact with the mold, it can be understood that the internal bolt part and the nut socket 300 are screwed to the end. In addition, the cover part 210 of the fastening cap part 200 can be formed to protrude from one end of the bolt part 220, which is an elastically deformed shape of the cover part 210 through fastening the bolt part to form a compressed space. The purpose of this is to reliably prevent the inflow of concrete into the strong space when the concrete (C) is poured by forming a space of negative pressure inside the bolt part 220 as that is included. For the above purpose, the cover part may be manufactured in various cross-sectional shapes, and may be manufactured in the shape of a cone, a hemisphere, a corrugated pipe, etc. ), an elastic ring made of a material having a lower hardness than that can be attached. The elastic ring may be made of urethane, silicone, rubber, or the like.

[Example 4-1] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, the tip of the bolt part of the fastening cap includes forming a breaking part that breaks under a certain load or more.

[Example 4-2] The present invention relates to a concrete pre-embedded anchor anchoring device, and in Example 4-1, the breaking part of the fastening cap part includes a groove formed with a smaller diameter than the screw thread diameter of the bolt part.

[Embodiment 4-3] The present invention relates to a concrete pre-embedded anchor anchorage device, and in Example 4-1, the breaking portion of the fastening cap part includes the thinnest part of the fastening cap part.

[Example 4-4] The present invention relates to a concrete pre-embedded anchor anchorage device, and in Example 4-1, a crack inducing hole is formed in the breaking part of the fastening cap part.

Among the construction of the concrete pre-embedded anchor fixing device, the fastening cap part 200 is composed of a cover part 210, a bolt part 220, and an insert insertion part 230, and the bolt part 220 has the tip of the tip under a certain load or more. to form a breaking point to break. This is to divide the nut socket 300 attached to the form (M) and the insert part (100) embedded in the concrete (C) when the concrete (C) pre-buried anchor fixing device demolds the form through concrete curing in the future. In order to achieve a forcible separation through the breaking point in the fastening cap part 200 . To this end, the tip of the bolt part 220 should have the weakest strength among the construction of the concrete pre-embedded anchor anchoring device, and a V-shaped groove may be formed to induce breakage, or the thickness may be intentionally formed to be the thinnest. have. However, when the structure is formed and the formwork is installed, it is attached to the inner surface of the formwork (M), and the breaking point is appropriate because it must not be damaged by the falling impact of the concrete poured during concrete (C) pouring and the vibration of the vibrator for concrete agitation. Strength must be secured. In addition, a crack inducing hole for inducing a crack may be formed in the breaking part 240 at the tip of the bolt part to cleanly form the breaking surface of the bolt part 220 .

[Example 5-1] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, one or more protrusions are formed on the outer surface of the insert insertion part of the fastening cap part.

[Example 5-2] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, a polygonal groove is formed at the inner end of the recess groove of the insert insertion part of the fastening cap part.

Among the construction of the concrete pre-embedded anchor fixing device, the fastening cap part 200 is composed of a cover part 210, a bolt part 220, and an insert inserting part 230, and the insert inserting part is an insert part 100 inside. The recessed groove 231 is formed, and one or more protrusions 232 are formed on the outside, so that the bonding force according to the concrete embedding can be improved. In addition, the recessed groove 231 of the insert insertion part 230 is formed to extend to the inner surface of the bolt part 220 formed on one side of the fastening cap part 200, and the break part formed at the tip of the bolt part when the mold (M) is demolded. When 240 is broken and falls, it is divided while the bolt part 220 is fastened to the nut socket 300 , and the inner surface of the recessed groove 231 is opened. At this time, it is possible to easily separate the screwed coupling of the socket nut and the broken bolt part 220 by using a tool that fits the polygonal groove formed on the inner surface of the bolt part, that is, the end of the recessed groove 231 .

[Example 6-1] The present invention relates to a concrete pre-embedded anchor anchorage device, and in Example 1-1, the fastening cap part is made of engineering plastic.

[Example 6-2] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 6-1, the fastening cap part includes MC nylon.

Among the construction of the concrete pre-embedded anchor fixing device, the fastening cap unit 200 is composed of a cover unit, a bolt unit 220, and an insert insertion unit, and the fastening cap unit 200 can be manufactured by using a common engineering plastic (Engineering Plastic). have. In detail, the fastening cap part 200 may be made of MC nylon (Mono Cast Nylon), and UHMWPE, polyamide (PA6), polyethylene (PE), which maintains a certain strength during installation, and between members due to breakage at breakage It is selected as the material in which the dividing surface is formed most clearly, and it can be formed by a manufacturing method using a separate engineering plastic material such as injection or 3D printer molding.

[Embodiment 7-1] The present invention relates to a concrete pre-embedded anchor anchorage device, and in Embodiment 1-1, the nut socket includes one or more welding grooves on the outer surface.

[Example 7-2] The present invention relates to a concrete pre-embedded anchor anchorage device, and in Example 7-1, the welding bead is formed smaller than the welding groove.

Among the construction of the concrete pre-embedded anchor anchoring device, the nut socket 300 has a thread formed therein, so that the concrete pre-embedded anchor fixing device is substantially coupled to the formwork through fastening with the bolt 220 . To this end, the nut socket 300 is made of metal, and the position with the mold M can be formed in various positions according to the convenience of the operator, which is welded when the nut socket 300 is removed after the mold is demolded. Since the location is not constant, the removal efficiency may be reduced. In order to efficiently perform this, one or more welding grooves 310 are formed on the outer surface of the nut socket 300, and the welding grooves 310 are uniformly formed by spot welding, etc. Welding is performed, and when the nut socket 300 is removed, the removal of the welding part can be conveniently performed. In addition, the welding groove 310 is formed to be larger than the size of the weld bead so that the weld bead area is not exposed to the outside of the nut socket 300, thereby reducing the amount of welding remnants due to repeated use of the form (M). This can extend the service life of the formwork.

[Example 8-1] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, the nut socket is demolded together with the formwork after concrete pouring and curing, and the bolt is attached to the nut socket during demolding. Including parts that are broken and embedded.

During the construction of the concrete pre-embedded anchor fixing device, the nut socket 300 is demolded together with the formwork (M) after the concrete is poured and cured to form the concrete (C) structure, and the bolt part 220 is in the nut socket during demolding. is broken and becomes embedded.

[Example 9-1] The present invention relates to a concrete pre-embedded anchor fixing device, and in Example 1-1, a chemical injection cap is inserted inside the cover part of the fastening cap part embedded in the concrete after the formwork is demolded. and a chemical epoxy is filled and cured between the inside of the cover part and the cap for chemical injection.

The concrete pre-buried anchor anchoring device is buried inside the cured concrete structure, and the cap 400 for chemical injection is inserted inside the cover part 210 in which the bolt part is broken. Between the inside of the cover part and the cap 400 for chemical injection, chemical epoxy is filled and hardened, and future inspection facilities pass the cap 400 for chemical injection by the fastening bolt and bolt to the embedded insert part 100. Thus, a reliable bonding structure can be formed.

C: Concrete M: Formwork
A: Concrete pre-embedded anchor anchorage
100: insert part 110: concave groove
120: side section
200: fastening cap part 210: cover part
220: bolt part 230: insert insertion part
231: recessed groove 232: stone
240: break
300: nut socket 310: welding groove
400: cap for chemical injection

Claims (10)

In the concrete pre-embedded anchor fixing device,
An insert portion having a concave groove formed with a thread on one inner surface, and having one or more side end portions on the other outer surface;
A cover part having one end in contact with the formwork; and a bolt part protruding from the inner center of the cover part to one side; and the other end of the cover part extending from the other end, forming an indentation groove on the inner surface to insert an insert into which one side of the insert part is inserted part; a fastening cap part consisting of; and
and a nut socket fastened to the bolt part of the fastening cap part and welded to the formwork;
One end of the cover portion of the fastening cap portion is formed to protrude from one end of the bolt portion, so that when the bolt portion is fastened with the nut socket, the cover portion is deformed to form a space of negative pressure,
Concrete pre-embedded anchor fixing device in which a polygonal groove is formed at the inner end of the recessed groove of the insert insertion part.
According to claim 1,
Concrete pre-embedded anchor fixing device comprising the side end face portion is formed with a cross-section that is enlarged than the outer surface of the insert portion, and the cross-section is enlarged in the concave groove direction.
delete delete According to claim 1,
Concrete pre-embedded anchor fixing apparatus comprising forming a; the tip of the bolt part of the fastening cap part is a breaking part that is broken under a certain load.
The method of claim 1,
Concrete pre-embedded anchor fixing device comprising a; at least one protrusion; on the outer surface of the insert insertion part of the fastening cap part.
According to claim 1,
Concrete pre-embedded anchor anchorage device comprising that the fastening cap part is an engineering plastic.
According to claim 1,
The nut socket is a concrete pre-embedded anchor fixing device comprising a; at least one welding groove on the outer surface.
According to claim 1,
The nut socket is demolded together with the mold after concrete pouring and curing, and the bolt part is broken and embedded in the nut socket during demolding.
According to claim 1,
A chemical injection cap is inserted inside the cover part of the fastening cap part embedded in the concrete after demolding the mold, and chemical epoxy is filled and hardened between the inside of the cover part and the chemical injection cap. Concrete pre-embedded anchor comprising: fixing device.

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