KR20130005341A - Auto-wedge spring fixing equipement for tension of earth anchor - Google Patents

Auto-wedge spring fixing equipement for tension of earth anchor Download PDF

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Publication number
KR20130005341A
KR20130005341A KR1020110066673A KR20110066673A KR20130005341A KR 20130005341 A KR20130005341 A KR 20130005341A KR 1020110066673 A KR1020110066673 A KR 1020110066673A KR 20110066673 A KR20110066673 A KR 20110066673A KR 20130005341 A KR20130005341 A KR 20130005341A
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KR
South Korea
Prior art keywords
wedge
tension
fixing
tension member
cylinders
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Application number
KR1020110066673A
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Korean (ko)
Inventor
도호준
도효림
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도효림
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Publication date
Application filed by 도효림 filed Critical 도효림
Priority to KR1020110066673A priority Critical patent/KR20130005341A/en
Publication of KR20130005341A publication Critical patent/KR20130005341A/en

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    • 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
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/74—Means for anchoring structural elements or bulkheads
    • E02D5/76—Anchorings for bulkheads or sections thereof in as much as specially adapted therefor
    • 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
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2200/00—Geometrical or physical properties
    • E02D2200/14—Geometrical or physical properties resilient or elastic
    • E02D2200/146—Springs

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

Abstract

PURPOSE: An automatic wedge spring fixture of an earth anchor is provided to maximize tension efficiency and construction quality by maintaining a target tensile force, and to prevent a tension member from being slid. CONSTITUTION: An automatic wedge spring fixture of an earth anchor comprises a fixing housing(100), a fixing cover(200), a wedge fixing head(300), and a compression spring. The fixing housing comprises a spare space(110), a plurality of cylinders, and a plurality of fitting holes connected to the cylinders. The fixing cover is connected to the other end, and comprises a tension member cover hole corresponding to the cylinders. The wedge fixing head comprises a tension member head hole, and is inserted into the cylinder to pressurize the upper part of a wedge member. The compression spring is connected to the cylinder, and continuously pressurizes the wedge fixing head to the wedge member.

Description

AUTO WEDGE SPRING FIXING EQUIPEMENT FOR TENSION OF EARTH ANCHOR}

The present invention relates to an auto wedge spring fixing device for tensioning the earth anchor, and more particularly, when the tensioning member is tensioned when the earth anchor is installed, the wedge member is separated from the tension member to prevent the fixing of the tension member. In order to secure the tension member by the wedge member at the tensioned position of the tension member, the force is continuously applied in the opposite direction to the tension of the wedge member so that the tensile construction quality is excellent, and the earth formed to maximize the tensile efficiency. The present invention relates to an anchoring auto wedge spring fixing device.

In general earth anchors, earth walls such as sheet piles are installed to prevent the collapse of earth and sand, and after the tension member such as steel wire is installed in the drilled hole drilled at a predetermined slope with respect to the surface, the tension member is tensioned. When it is tensioned by the machine, it is embedded by mortar or the like in the drilling hole, and the upper end of the tension member embedded in the drilling hole is exposed to the outside and is fixed by the fixing unit and the fixing plate installed in the supporting member such as the strip.

There are various forms of fixing the upper end of the tension member to the anchorage, but the wedge-type anchoring method is disclosed in the most commonly used manner. Here, the wedge member is generally composed of a three-piece piece is a widely used structure configured to form a cone shape by the assembly, which is applied to the tension member by the tensioner, the wedge member is inserted into the wedge member insertion hole of the anchorage By inserting and fixing with the tension member in, the tension force applied to the tension member serves to transmit the entire earth wall structure through the anchorage.

On the other hand, the tensioner is a commonly used hydraulic tensioner is currently used, by pulling the tension member by the hydraulic force to apply a tensile force. Here, the tension of the tension member is provided with a lower support plate on the upper surface of the anchorage, the tension member is exposed through the wedge member insertion hole of the anchorage and the tension member through hole of the lower support plate.

Here, the wedge member is inserted into the wedge member insertion hole of the anchorage, and is prevented from being separated by the lower support plate. On the lower side of the lower support plate, when the tension member is tensioned, the excessive pressure against the wedge member, that is, the pressure facing the tension direction Since the free space portion is formed to prevent the wedge member, the wedge member is pressed to fix the tension member, thereby preventing the tension member from being difficult to tension in the direction in which the tension member is tensioned during the tension force application.

In the conventional tension, when the tensile force is applied to the target value and the tensile force is released, the tension member causes contraction to the earth wall structure side again. At this time, the wedge member on the anchorage side is moved together to the earth wall structure side to hold the tension member that contracts. The wedge action is initiated and the tension member is secured to the anchorage to prevent its contraction, while the tension applied to the tension member is transmitted to the entire earth wall structure through the anchorage.

However, the application of the tensile force to the conventional tension member is that the wedge member is released from the tension member by the distance of the free space portion, and thus the wedge member is accurately moved back to the wedge member insertion hole after the tension force is finished to the tension member At the time of fixing the tension member, the wedge member is moved to the wedge member insertion hole at a corresponding speed with respect to the fast contracting force of the tension member, so that it is difficult to fasten the tension member quickly, resulting in sliding of the wedge member. There is a problem that the tension loss is followed, it is difficult to achieve the actual target tensile efficiency.

Therefore, the tensile strength is increased through multiple repetitions, or the standard tensile force is applied by applying a higher tensile force than the standard value, which is followed by a problem in the air and construction quality, and when the tensile force higher than the standard value is a problem that the tensile member breakage or safety falls There was this.

Therefore, the present invention was created to solve the problems described above, the wedge member is automatically compensated by the spring distance of the clearance portion to release the coupling force of the tension member by the wedge member during installation of the earth anchor It prevents sliding phenomenon with the tension member generated when moving to the wedge member insertion hole, so that tension can be maintained while maintaining the target tension force, so that the automatic wedge spring fixing device for tensioning the earth anchor can maximize high tensile construction quality and tensile efficiency. The purpose is to provide.

Auto wedge spring fixing device for tensioning of the anchor anchor according to the present invention for solving the object as described above is the anchoring anchorage 10 of the anchor anchor formed with a wedge member insertion hole 12 is coupled to the wedge member 2, tension A tension fixing device installed on the lower surface of the tensioner for tensioning the member 1 and coupled between the lower support plates 20 on which the tension member through-holes are formed, wherein the clearance is formed in a cylindrical shape and recessed inwardly in one end of the cylindrical shape. The space 110 is formed, and a plurality of cylinders 120 are formed at the other end of the free space 110 opposite to the free space 110, and the plurality of cylinders 120 are provided in the free space 110. A fixing housing (100) formed with a plurality of fitting holes (130) communicating with; The fixing cover 200 is bolted to the other end formed with a plurality of cylinders 120 of the fixing housing 100, a plurality of tension member cover through-holes 210 corresponding to the same axis and the plurality of cylinders 120 Wow; It is formed in a cylindrical shape, the engaging frame 310 is stepped to one side to be caught by the fitting hole 130, the tension member head through hole 320 through which the tension member 1 is formed in the cylindrical center is formed, The wedge fixing head is inserted through the plurality of cylinders 120 of the fixing housing 200 so as to be axially flowable to the plurality of fitting holes 130, respectively, and presses the upper end of the wedge member 2. 300); A plurality of compression springs 400 coupled to each of the plurality of cylinders 120 of the fixing housing 100 to continuously press the wedge fixing head 300 to the wedge member 2 side. It is done.

The present invention automatically compensates the separation distance of the free space portion to release the coupling force of the tension member by the wedge member by the spring during installation of the earth anchor to prevent sliding phenomenon with the tension member generated when the wedge member is moved to the wedge member insertion hole. It is possible to maximize the tensile construction quality and tensile efficiency by being able to tension while maintaining the target tensile force.

1 is an overall perspective view of an auto wedge spring fixing device for tensioning an earth anchor according to the present invention.
Figure 2 is an exploded perspective view of the tensioning auto wedge spring fixing unit of the earth anchor according to the present invention.
Figure 3 is a side cross-sectional view of the tensioning auto wedge spring fixing unit of the earth anchor according to the present invention.
4 to 6 is a partial side cross-sectional view showing a state of use of the auto wedge spring fixing device for tensioning the earth anchor according to the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the tensioning auto wedge spring fixing unit of the earth anchor.

1 is an overall perspective view of an auto wedge spring fixing device for tensioning of an earth anchor according to the present invention, Figure 2 is an exploded perspective view of an auto wedge spring fixing device for tensioning an earth anchor according to the present invention, Figure 3 is an earth according to the present invention 4 is a side cross-sectional view showing a state of use of the tensioning auto wedge spring fixing device of the anchor according to the present invention.

The lower portion is provided on the anchoring anchorage 10 of the earth anchor formed with the wedge member insertion hole 12 to which the conventional wedge member 2 is coupled, and the lower surface of the tensioner for tensioning the tension member 1, and the tension member through-hole formed. The auto wedge spring fixing device for tensioning of the earth anchor according to the present invention is coupled between the supporting plates 20 to automatically compensate for the separation distance of the free space part to release the coupling force of the tension member by the wedge member during installation of the earth anchor. By preventing the sliding phenomenon with the tension member generated when the wedge member is moved to the wedge member insertion hole by the tension can be maintained while maintaining the target tensile force, it is possible to maximize the high tensile construction quality and tensile efficiency, Figure 1 to Figure As shown in FIG. 3, the auto wedge spring fixing unit includes a fixing housing 100, a fixing cover 200, a wedge fixing head 300, and a compression spring 400.

The fixing housing 100 presses the wedge fixing head 300 to be described later by the elastic force of the compression spring 400 to be described later on the axis so that the wedge fixing head 300 is continuously pressed to the upper end of the wedge member 2. Along with the wedge fixing head 300 is provided to be spaced apart by the elastic force on the axis, it is formed in a cylindrical shape. Here, the fixing housing 100 is formed with a free space portion 110 recessed inward at one end of the cylindrical shape.

When the tension member 1 is tensioned, the wedge member 2 fixing the tension member 1 is spaced apart in the tensile direction so that the clearance is formed at a minimum distance for releasing the fixing force. 1) is formed to allow tension. In addition, a plurality of cylinders 120 corresponding to the number of the tension members 1 are formed in the other end side opposite to the free space part 110. Here, the plurality of cylinders 120 have a compression spring 400, which will be described later, is built so that the compressive elastic force is generated in the axial line.

In addition, a plurality of fitting holes 130 communicating with the plurality of cylinders 120 are formed in the free space 110 of the fixing housing 100 so that the wedge fixing head 300 to be described later is fitted.

The fixing cover 200 is forgotten that the compression spring 400 to be described later is separated from the cylinder 120, a plurality of cylinders of the fixing housing 100 so that the tension member 1 is penetrated to impart a tensile force by the tensioner 120 is bolted to the other end formed. Here, the fixing cover 200 is formed with a plurality of tension member cover through-holes 210 corresponding to the same axis and the plurality of cylinders 120.

The wedge fixing head 300 is in contact with the upper surface of the wedge member 2 is continuously pressed under the compressive elastic force of the compression spring 400 to be described later, when the tension of the tension member 1, the wedge member 2 is wedge Minimizing the distance from the member insertion hole to minimize the sliding phenomenon of the tension member 1 and the wedge member 2 is contracted after the completion of the tension of the tension member 1, is formed in a cylindrical shape the fitting hole 130 Hatch frame 310 is formed on one side to be caught). In addition, a tension member head through-hole 320 through which the tension member 1 penetrates is formed at the center of the cylindrical shape, and a plurality of fitting holes 130 are inserted through the plurality of cylinders 120 of the fixing housing 200. Respectively coupled to the axial flow.

The compression spring 400 is to generate the elastic force to continuously press the upper portion of the wedge fixing head 300, the wedge member 2, each of the plurality of cylinders 120 of the fixing housing 100 Combined. In this case, the plurality of compression springs 400 may generate elastic force spaced apart by the distance in the free space portion 110 without the entire wedge fixing head 300 leaving the fitting hole 130.

As shown in FIGS. 4 and 5, the wedge member 2 is coupled to the wedge member insertion hole 12 to fix the tension member 1 as shown in FIGS. 4 and 5. It is located between the upper surface of the fixing unit 10 and the lower support plate 20 is formed through the tension member through hole.

Then, when the tension member 1 is pulled by the tensioner and the tensile force is applied, the tension member 1 and the wedge member 2 from the wedge member insertion hole 12 of the anchorage 10 fixed by the wedge member 2. Is moved to the side of the auto wedge spring fixing unit of the present invention. Then, when the wedge member 2 is moved to the free space portion 110 side, the wedge fixing head 300 is pushed by the tension force of the tension member 1 toward the compression spring 400, the tension member applied to the target tension force ( After finishing the tensile force of 1), when the tension member 1 is placed in a stationary state, the wedge fixing head 300 is pushed toward the wedge member 2 by the elastic force of the compression spring 400.

Next, the wedge fixing head 300 is pushed to move near the wedge member insertion hole 12 in the position where the wedge member 2 fixes the tension member 1, and then complete the tension of the tension member 1 When the tension member 1 is contracted by the wedge member 2 moved back to the position where the tension member 1 is already fixed when it is contracted to the anchorage 10 again, the tension force due to the sliding phenomenon of the tension member 1. Loss is minimized.

Next, as shown in FIG. 6, even when only one of the tension members 1 is separately applied, the target tension may be imparted to the tension member 1 through the above-described order, thereby reducing tension. It is apparent that only the member 1 can be pulled separately and have excellent construction quality. In addition, the construction time is shortened by not having to perform the entire tension, thereby improving the productivity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined in the appended claims. Is within the scope of the description.

1: tension member 2: wedge member
10: anchorage hole 12: wedge member insertion hole
20: lower support plate 100: fixing housing
110: free space 120: cylinder
130: fitting hole 200: fixing cover
210: tension member cover through hole 300: wedge fixing head
310: hook frame 320: tension member head hole
400: compression spring

Claims (1)

The lower support plate is provided on the anchoring hole 10 of the earth anchor formed with the wedge member insertion hole 12 to which the wedge member 2 is coupled, and the lower surface of the tensioner for tensioning the tension member 1, and the tension member through hole formed therein ( 20) In the tensioning fuser coupled between,
It is formed in a cylindrical shape, the free space portion 110 is formed in one end of the cylindrical shape is formed, a plurality of cylinders 120 are formed in the free space portion side on the other end side opposite the free space portion 110 A fixing housing (100) having a plurality of fitting holes (130) communicating with the plurality of cylinders (120) in the free space portion (110);
The fixing cover 200 is bolted to the other end formed with a plurality of cylinders 120 of the fixing housing 100, a plurality of tension member cover through-holes 210 corresponding to the same axis and the plurality of cylinders 120 Wow;
It is formed in a cylindrical shape, the engaging frame 310 is stepped to one side to be caught by the fitting hole 130, the tension member head through hole 320 through which the tension member 1 is formed in the cylindrical center is formed, The wedge fixing head is inserted through the plurality of cylinders 120 of the fixing housing 200 so as to be axially flowable to the plurality of fitting holes 130, respectively, and presses the upper end of the wedge member 2. 300);
A plurality of compression springs 400 coupled to each of the plurality of cylinders 120 of the fixing housing 100 to continuously press the wedge fixing head 300 to the wedge member 2 side. Auto wedge spring fixing unit for earth anchors.
KR1020110066673A 2011-07-06 2011-07-06 Auto-wedge spring fixing equipement for tension of earth anchor KR20130005341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020110066673A KR20130005341A (en) 2011-07-06 2011-07-06 Auto-wedge spring fixing equipement for tension of earth anchor

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Application Number Priority Date Filing Date Title
KR1020110066673A KR20130005341A (en) 2011-07-06 2011-07-06 Auto-wedge spring fixing equipement for tension of earth anchor

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KR20130005341A true KR20130005341A (en) 2013-01-16

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KR1020110066673A KR20130005341A (en) 2011-07-06 2011-07-06 Auto-wedge spring fixing equipement for tension of earth anchor

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101327275B1 (en) * 2013-07-24 2013-11-08 김태우 Auxiliary anchoring apparatus for post-tensioning of tendon
CN112064636A (en) * 2020-09-20 2020-12-11 内蒙古福城矿业有限公司 High-anchoring-force extensible anchor cable device and implementation method thereof
CN112211349A (en) * 2020-09-10 2021-01-12 湖南联智智能科技有限公司 Steel strand anti-slip wire tool for pre-tensioning construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101327275B1 (en) * 2013-07-24 2013-11-08 김태우 Auxiliary anchoring apparatus for post-tensioning of tendon
CN112211349A (en) * 2020-09-10 2021-01-12 湖南联智智能科技有限公司 Steel strand anti-slip wire tool for pre-tensioning construction
CN112064636A (en) * 2020-09-20 2020-12-11 内蒙古福城矿业有限公司 High-anchoring-force extensible anchor cable device and implementation method thereof

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