KR20160137138A - Anchor including release device of tension members - Google Patents

Anchor including release device of tension members Download PDF

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Publication number
KR20160137138A
KR20160137138A KR1020150071811A KR20150071811A KR20160137138A KR 20160137138 A KR20160137138 A KR 20160137138A KR 1020150071811 A KR1020150071811 A KR 1020150071811A KR 20150071811 A KR20150071811 A KR 20150071811A KR 20160137138 A KR20160137138 A KR 20160137138A
Authority
KR
South Korea
Prior art keywords
wedge
anchor
cover
tension member
tensile member
Prior art date
Application number
KR1020150071811A
Other languages
Korean (ko)
Inventor
남부현
Original Assignee
남부현
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 남부현 filed Critical 남부현
Priority to KR1020150071811A priority Critical patent/KR20160137138A/en
Publication of KR20160137138A publication Critical patent/KR20160137138A/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E02D17/207—Securing of slopes or inclines with means incorporating sheet piles or piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/80—Ground anchors
    • E02D5/805—Ground anchors with deformable anchoring members
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/30—Miscellaneous comprising anchoring details
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00—Miscellaneous
    • E02D2600/40—Miscellaneous comprising stabilising elements

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)

Abstract

The present invention relates to an anchor including a releasing device of a tension member. According to an aspect of the present invention, the anchor including the releasing device of the tension member includes: an anchor head (20) having a wedge installation space (21); a wedge (30) fixing the tension member (10) by being divided into multiple units and installed in the wedge installation space (21); a wedge cover (80) tap-connected to the anchor head (20); and a wedge releasing unit (50) enclosing the outer side of the wedge (30) and having a hanging unit (51) protruding from the upper end to the inner side, wherein the wedge releasing unit (50) is divided into multiple units and has a rubber ring accommodation groove (52) in which a rubber ring (55) is inserted. The wedge (40) is divided into the multiple units and has a hanging groove (33) on which the hanging unit (51) is hung. A hanging protrusion (81) is formed in the wedge cover (80) and enables a vertical movement by being in contact with the upper end of the wedge releasing unit (50).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an anchor for a tensile member,

An embodiment relates to an anchor including a disengagement device for a tension member.

The anchor method is a method mainly used in civil works such as earthworks, tunnel shaft stabilization, masonry and retaining wall reinforcement. In this method, a perforator is used to drill holes in the ground to be drilled and grout hoses and tension members And then the grout is injected through the grout hose. When the grout is cured with the inner bottom body, the anchor is fastened to the other end of the tension member. Then, the tension member is pulled by the tensioner to stretch the grout and the ground It is a method to reinforce the weak floor.

The application of such anchoring method has advantages such as effective construction management and shortening of air in downtown construction, but due to the hypothesis of the tensile member having the cross-sectional strength of about 6 times as compared with the strength of ordinary reinforcing steel at the subsequent construction, Equipment loss and air delay occurred. In order to solve these problems, an anchor which can remove the tensile member according to the construction process after the completion of the excavation has been developed and used, and this is a device for disassembling the tensile member for the anchor method.

A number of tensile member disassembling apparatuses for anchoring methods have been proposed. Among them, Korean Utility Model Registration No. 20-0242474, registered in Korean Registered Trademark No. 20-0242474, has a main body in which a wedge screw and cap screw are formed and an outer ring The wedge assembly having a membrane formed on the front side of the inner ring groove so as to sandwich a membrane therebetween, the membrane of the wedge assembly being provided with a membrane of an elastic hook, And a cap having a hook which is inserted and locked by the hook.

The method of disassembling the tensile member using the anchor disassembling apparatus configured as described above is a method of disassembling the tensile member by cutting the tensile member installed in a tense state in the ground and then cutting the end of the cut tensile member by a hammer, The wedge assembly is pushed into the tension member and all the wedges are opened to release the wedge engagement with the distal end of the tension member and once the retracted wedge assembly is caught in the engagement jaws of the cap, It did not come out.

However, in such an anchor dismantling apparatus of the above-mentioned Utility Model Publication, when a tensile member is assembled and transported to the wedge assembly or an external impact is applied due to carelessness during operation, a catch, which is fastened to the upper end of the wedge assembly, The wedge assembly can be locked with the jaw, and if the lock is locked in the cap, the wedge assembly can not be released, and therefore, all the wedges of the wedge assembly are open, which makes reusability impossible.

Particularly, when the tension member is struck, the wedge assembly is pushed into the cap so that it is caught by the jaw of the cap, so that it is required to strike with a single large force, and a safety accident may occur if it is inadvertently missed.

In addition, since the wedge of the wedge assembly has a short holding length at both ends of the tensile member, the wedge assembly has to be long in order to solve the disadvantage that the fixing force is weak and the fixing force is weak.

The embodiments of the present invention have been developed to solve the above-mentioned problems of the prior art. The support member on the upper part of the wedge is formed into a cap-shaped cross-section to accommodate the end portion of the tensile member by the height of the cap, And an object of the present invention is to provide an anchor including a dismantling device for a tensile member capable of stably and reliably holding the reinforcement member and capable of reinforcing the strength of the support member.

The anchor including the apparatus for disassembling a tension member according to the embodiment is provided with an anchor head 20 having a wedge installation space 21 and a plurality of support members 20 provided in the wedge installation space 21, And a wedge cover (80) that is tap-fastened to the anchor head (20). The anchor includes a wedge (30) for fixing the wedge (30) Further comprising a wedge releasing portion (50) formed with a rubber ring receiving groove (52) into which a rubber ring (55) is inserted, the wedge releasing portion (50) The wedge cover 30 is divided into a plurality of portions and an engaging groove 33 in which the engaging portion 51 is engaged is formed and the wedge cover 80 contacts the upper end of the wedge releasing portion 50, And the proposed latching jaw 81 is formed.

Here, a slope 51a may be formed at the lower end of the latching part 51. [

Here, the wedge release portion may be one of two to five divisions.

Here, the division sizes of the wedge release portions may be different from each other.

A space 82 may be formed between the outside of the wedge release portion 50 and the inside of the wedge cover 80.

According to the anchor including the apparatus for disassembling the tensile member according to the embodiment, the support member on the upper side of the wedge is formed into a cap-shaped cross-section so as to accommodate the end portion of the tensile member by the height of the cap, whereby both ends of the tensile member can be stably It is possible to reliably hold and to strengthen the strength of the support member.

According to the anchor including the apparatus for disassembling the tensile member according to the embodiment, when an external force is applied to the lower end of the tensile member in the upper direction, the wedge, the supporting member, and the compression cover are pushed upward as the tensile member is pushed , The engaging portion of the wedge releasing portion is engaged with the engaging groove of the wedge so that the pulling member can be easily pulled out. Therefore, the wedge can be expanded by applying only one external force, so that the tension member can be pulled out easily and safely.

According to the anchor including the apparatus for disassembling the tensile member according to the embodiment, when a slope is formed at the lower end of the engaging portion and the wedge is pushed in the upper direction, friction between the wedge and the wedge releasing portion can be reduced.

According to the anchor including the apparatus for disassembling the tension member according to the embodiment, when the wedge is pushed in the upper direction, a space is formed between the outer side of the wedge release portion and the inner side of the wedge cover to facilitate the expansion of the wedge and wedge release portion have.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial cut-away side view of an anchor including a disengagement apparatus for a tension member according to an embodiment. FIG.
2 is an exploded perspective view of an anchor including a tensile member disassembling apparatus according to an embodiment.
3 is a cross-sectional view of the anchor head shown in Fig.
Figs. 4A and 4B are views for explaining the wedge shown in Fig. 2. Fig.
5 is a cross-sectional view of the support member 40 shown in Fig.
6A and 6B are views for explaining the wedge release portion shown in FIG. 2. FIG.
7 is a cross-sectional view of the compression cover 60 shown in Fig.
8 is a view for explaining the elastic member 70 shown in Fig.
9 is a partial cutaway side view of the wedge cover shown in Fig.
10 shows a state where an external force is applied to the tension member at the anchor shown in Fig.

The thickness and size of each layer in the drawings are exaggerated, omitted, or schematically shown for convenience and clarity of explanation. Also, the size of each component does not entirely reflect the actual size.

In the description of the embodiments according to the present invention, in the case where an element is described as being formed on "on or under" another element, the upper (upper) or lower (lower) (On or under) all include that the two elements are in direct contact with each other or that one or more other elements are indirectly formed between the two elements. Also, when expressed as "on or under", it may include not only an upward direction but also a downward direction with respect to one element.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an anchor including a tensile member disassembling apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings.

<Embodiment>

Brief Description of the Drawings Fig. 1 is a partially cut-away side view of an anchor including a tensile member disassembling apparatus according to an embodiment, and Fig. 2 is an exploded perspective view of an anchor including a tensile member disassembling apparatus according to an embodiment.

1 and 2, an anchor including a tensile member disassembling apparatus according to an embodiment includes an anchor head 20, a wedge 30, a support member 40, a wedge release portion 50, a compression cover 60, an elastic member 70, and a wedge cover 80. Here, the tensile member 10 may be inserted and fixed to the lower portion of the anchor, and may be finished with a plastic tube (not shown) so that airtightness is maintained. Therefore, the tensile member 10 can prevent the waterproof effect and the rusting due to water penetration into the interior. For example, the tension member 10 may be formed of seven wires, and six wires may be arranged around one wire at the center and twisted at a constant pitch.

3 is a cross-sectional view of the anchor head shown in Fig.

Referring to Figs. 1 to 3, the anchor head 20 is vertically opened and has at least an inclined wedge installation space 21 at an upper inner surface thereof.

Figs. 4A and 4B are views for explaining the wedge shown in Fig. 2. Fig. Specifically, Fig. 4A is a partial cut-away side view of the wedge, and Fig. 4B is a plan view of the wedge.

Referring to Figs. 1 to 4A, the wedge 30 is installed so that at least a part of the wedge 30 is housed in the wedge installation space 21. Fig. The wedge 30 has an internal space for allowing the tension member 10 to be inserted centrally. Spiral unevenness is formed on the inner surface of the inner space of the wedge 30 to prevent the tensile member 10 from slipping or being separated from the wedge 30 when the tensioning member 10 is tensioned. The wedge 30 has a support member receiving groove 31 on the inner surface thereof, a first rubber ring receiving groove 32 into which the first rubber ring 35 is inserted on the outer surface, And an engaging groove 33 in which the portion 51 can be engaged. 4B, the wedge 30 may be divided into a plurality of segments. Here, although the wedge 30 is shown as being divided into three in Fig. 4B, the wedge 30 may be divided into two or more than four. Further, the sizes of the wedges 30 may be the same or different from each other.

5 is a cross-sectional view of the support member 40 shown in Fig.

1 to 5, the support member 40 accommodates the upper end of the tension member 10 and has a projection 41 on the lower end outer surface thereof and is fitted into the support member receiving groove 31. The support member 40 is formed as a cap-shaped cross-section so that the tensile member 10 can be pushed further, so that the support member 40 can be stably held and gripped securely.

6A and 6B are views for explaining the wedge release portion shown in FIG. 2. FIG. Specifically, Fig. 6A is a partial cutaway side view of the wedge release portion, and Fig. 6B is a plan view of the wedge release portion.

Referring to Figs. 1 to 6A, the wedge release portion 50 is disposed so as to surround the outside of the wedge 30. The wedge release part 50 is formed with a locking part 51 protruding inward at the upper end and a second rubber ring receiving groove 52 into which the second rubber ring 55 is inserted. Here, a slope 51a may be formed at the lower end of the latching portion 51. [ Here, the diameter of the second rubber ring 55 is larger than the diameter of the first rubber ring 35 described above. Referring to FIG. 6B, the wedge release portion 50 can be divided into a plurality of portions. Here, although the wedge release unit 50 is shown as being divided into three in Fig. 6B, the wedge release unit 50 may be divided into two or four or more segments. Further, the sizes of the wedge release portions 50 may be equal to each other and may be different from each other.

7 is a cross-sectional view of the compression cover 60 shown in Fig.

Referring to Figs. 1 to 7, the compression cover 60 is disposed at the upper end of the wedge 30 to ensure smooth operation of the wedge 30. Fig.

8 is a view for explaining the elastic member 70 shown in Fig.

1 to 8, the elastic member 70 imparts a force to push the wedge 30 and the compression cover 50 into the wedge installation space 21 at all times. For example, as shown in Fig. 8, the elastic member 70 may be a spring.

9 is a partial cutaway side view of the wedge cover shown in Fig.

Referring to Figs. 1 to 9, the wedge cover 80 is tap-fastened on the top of the anchor head 20 so that the elastic member 70 has elasticity. The wedge cover 80 may be formed with a locking protrusion 81 which suggests upward movement of the wedge release portion 50. Here, when the wedge release portion 50 is disposed in the wedge cover 80, a space 82 may be formed between the outside of the wedge release portion 50 and the inside of the wedge cover 80. Therefore, the wedge release portion 50 can be extended outwardly as the space 82 is formed.

Hereinafter, the release method of the tension member will be described with reference to Fig.

10 shows a state where an external force is applied to the tension member at the anchor shown in Fig.

1, the tension member 10 is fixed to one end thereof by a wedge 30 of an anchor and an inner bottom body composed of a grout hose and a tensile member is inserted through a hole in the ground drilled by a perforator, And the other end of the tensile member 10 is also engaged with the anchor, and then the tensile member 10 is pulled by the tensioner, and the grout and the ground as well as the tensile member 10 It is installed so that the maximum tensile force works.

In this state, when the tensile member 10 drawn out to the outside is cut, the tensile force applied to the tensile member 10 is maintained in the released state. At this time, the entire wire at the end of the tensile member 10 is in contact with the support member 40. [

When an external force is applied to the lower end of the cut tensile member 10 in the upper direction (for example, when the impact member 10 is hit with a hammer) in this state, the tensile member 10 is pushed toward the anchor.

Thus, as shown in Fig. 10, as the tension member 10 is pushed, the wedge 30, the support member 40, and the compression cover 60 are pushed. At this time, the engagement portion 51 of the wedge release portion 50 is caught in the engagement groove 33 of the wedge 30 to restrict further movement of the wedge 30 in the upper direction or the lower direction. In this state, the wedge 30 is expanded within the allowable range of the wedge installation space 21 of the anchor head 20, so that the tension member 10 can be easily removed.

As described above, the anchor including the dismounting device for a tensile member according to the embodiment has the support member 40 on the wedge 30 formed into a cap-shaped cross-section to accommodate the end portion of the tensile member 10 by the height of the cap , Whereby both ends of the tension member 10 can be stably and reliably held and the strength of the support member 40 can be reinforced.

When an external force is applied to the lower end of the tensile member 10 in the upper direction, the anchor including the disengagement device for the tensile member according to the embodiment is moved in the direction in which the wedge 30, The engaging portion 51 of the wedge releasing portion 50 is engaged with the engaging groove 33 of the wedge 30 so that the tensile member 10 can be easily I can take it out. Accordingly, the wedge 30 can be expanded by applying only one external force, so that the tension member 10 can be pulled out easily and safely.

The anchor including the tensile member disassembling apparatus according to the embodiment is characterized in that the inclined surface 51a is formed at the lower end of the engaging portion 51 so that when the wedge 30 is pushed in the upper direction, The friction between the portion 50 can be reduced.

When the wedge 30 is pushed in the upper direction, a space is formed between the outside of the wedge release portion 50 and the inside of the wedge cover 80, The wedge release portion 50 and the wedge release portion 30 can be easily expanded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It will be understood that various variations and applications are possible. For example, each component specifically shown in the embodiments can be modified and implemented. It is to be understood that all changes and modifications that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

1: anchor 10: tension member
20: anchor head 30: wedge
40: support member 50: wedge release part
60: compression cover 70: elastic member
80: Wedge cover

Claims (5)

A wedge (30) provided in the wedge installation space (21) and divided into a plurality of portions to fix the tension member (10), and an anchor head An anchor including a disengagement device for a tension member including a wedge cover (80)
A rubber ring receiving groove 52 is formed to surround the outer side of the wedge 30 and formed with an engaging portion 51 projecting inward from an upper end thereof and into which a rubber ring 55 is inserted, (50)
The wedge 30 is divided into a plurality of wedges 30. The wedge 30 has an engaging groove 33 for engaging the engaging portion 51,
Wherein the wedge cover (80) is provided with a locking protrusion (81) which is in contact with an upper end of the wedge release portion (50) and suggests upward movement. The method according to claim 1,
And an inclined surface (51a) formed at a lower end of the engaging portion (51). The method according to claim 1,
Wherein the wedge release part (50) is one of two to five partitions. The method according to claim 1,
Wherein the wedge release portion (50) has a split size different from that of the wedge release portion (50). The method according to claim 1,
(82) is formed between the outside of the wedge release portion (50) and the inside of the wedge cover (80).
KR1020150071811A 2015-05-22 2015-05-22 Anchor including release device of tension members KR20160137138A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150071811A KR20160137138A (en) 2015-05-22 2015-05-22 Anchor including release device of tension members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150071811A KR20160137138A (en) 2015-05-22 2015-05-22 Anchor including release device of tension members

Publications (1)

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KR20160137138A true KR20160137138A (en) 2016-11-30

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102261907B1 (en) * 2020-10-19 2021-06-07 삼호엔지니어링 주식회사 Enlarging apparatus for underground pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102261907B1 (en) * 2020-10-19 2021-06-07 삼호엔지니어링 주식회사 Enlarging apparatus for underground pipe

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