KR20130028489A

KR20130028489A - Tension control bracket

Info

Publication number: KR20130028489A
Application number: KR1020110092086A
Authority: KR
Inventors: 변항용; 김준성
Original assignee: 주식회사고려이엔시
Priority date: 2011-09-09
Filing date: 2011-09-09
Publication date: 2013-03-19

Abstract

PURPOSE: A tensile force controlling bracket is provided to control tensile stress to apply the tensile stress, which is suitable for fixing a structure, to a tensile member when the tensile member lengthens by moving a body in which the tensile member is installed to front and to rear from the structure. CONSTITUTION: A tensile force control bracket(10) comprises a body(20), a clamping unit(30), and a transferring member(40). The body includes a coupling unit, a screw unit and a hollow in order to insert a tensile member(11) installed in the structure. A hollow suppresses the clamping unit with the tensile stress applied to the tensile member and includes a fixing force. The clamping unit is installed on an end of the tensile member and fixes the tensile member to the body. The transferring member moves the body to the front and to the rear according to an applied direction of the tensile stress in order to control the tensile stress.

Description

Tension control bracket

The present invention relates to a tensile force adjustment bracket, and more particularly, to a tensile force adjustment bracket for fixing a structure by applying a tensile force to a tension member fixed to the structure.

In general, when the excavation hole of the steep slope is formed in the excavation work or foundation work of the civil engineering and construction site, the earth anchor method is widely used to prevent the wall from falling down, and the earth anchor method is briefly described as follows.

First, the thumb pile (H-pile) is put on the ground and excavated the designated ground, and the earth plate is inserted between each of the thumb pile to form the retaining wall. Subsequently, the perforated wall is punctured at a predetermined inclination angle, the anchor body is embedded in the perforated part, and the anchor body is fixed by performing first grouting on a fixed anchor length. In general, anchor body is divided into free anchor length and anchoring ground based on the part that meets the perforation part after setting up the virtual collapse line between the bottom edge of the excavation hole and the ground according to the design criteria according to the soil. Primary grouting is usually carried out for the anchorage.

When curing of the first grouting is completed, the anchoring body is fixed to the earth anchor bracket installed on the horizontal beam of the retaining wall by applying a tensile force to the free field La of the anchor body, and for this purpose, the free field La of the anchor body is anchored. After passing through the through-hole formed in the bracket is fixed using a cone of larger diameter than the through.

After fixing the anchor body to the earth anchor bracket, the second grouting is performed on the remaining portion of the perforated portion, through which the tensile force of the anchor body supports the retaining wall against earth pressure.

Korean Laid-Open Patent Publication No. 10-2011-0079787 discloses an 'earth anchor bracket'.

The earth anchor bracket is a base plate installed at regular intervals, and both side plates formed in the base plate are opposed to each other by a plurality of connecting members at regular intervals and an arc-shaped rotating plate support portion each of which is open at an upper inclined surface And a plate having a through hole through which the free field of the anchor body is drawn out, and a rotating plate which is fixed to the circular plate shape having one surface shorted at regular intervals from the bottom of the plate and inserted into the rotating plate support part to rotate. A pressure member is connected to the inner surface of the rotating plate, the rotating plate is formed with a release preventing piece for preventing the separation from the rotating plate support, respectively.

However, the earth anchor bracket is fixed to the end of the anchor body installed on the ground to fix the anchor body to the structure, there is no means for adjusting the tensile stress acting on the installed anchor body, when the anchor body increases by long time use, tension There is a disadvantage that the fixing force to the structure is reduced by reducing the stress.

In this regard, the present applicant filed a 'tension device capable of tension and retension' (Korea Patent Publication No. 10-2011-0095620) on February 19, 2010.

The tension and retension tension device is fixed to the outer surface of the concrete structure and the plate-shaped support portion formed with a through hole so that the tension material can penetrate, a pipe installed between the sheath disposed in the concrete structure and the inner surface of the support portion As a member of the form, one end is connected to the end of the sheath, the other end is disposed so as to communicate with the through-hole of the support, the fixing unit guide unit is installed to secure a space that can be inserted into the fixing unit located inside the outside and moved; The tension member disposed to extend through the sheath, the fixing unit guide part and the support part to extend to the outside of the concrete structure, and the tension member is formed in the form of a tubular thread formed on the outer circumferential surface of the tension member so as to penetrate through the tension member extending through the outside. Is formed on the outer peripheral surface of the bolt and the bolt portion is fixed to the outer end And a fixing part including a nut part fastened to an acid and installed on the outer side of the fixing plate so that the bolt part is supported by the support part, and the tension force of the tension member according to the rotation of the nut part only in a state where the bolt part is set not to rotate together with the nut part. Allow you to adjust your tension.

However, the tension and retension tension device is put into the sleeve at the end of the tension material and press the press using a press to be fixed to the fixing unit to the bolt portion, so that the deformation of the sleeve occurs due to the tensile stress acting on the tension material for a long time There is a disadvantage that the fixing force is reduced.

The present invention has been made to improve the above problems, an object of the present invention is to provide a tension control bracket provided with a tensile stress control means that can adjust the tensile stress acting on the tension member installed in the structure.

The tension control bracket according to the present invention for achieving the above object is a body formed with a hollow so that the tension member installed in the structure can be inserted through, the clamping so that the tension member is fixed to the body is installed at the end of the tension member And a conveying member for advancing and retracting the body with respect to the structure along the tensile stress acting direction of the tension member to adjust the tensile stress acting on the tension member.

The body is formed with a first screw thread in the longitudinal direction on the outer circumferential surface, the transfer member is formed with a fastening hole to be inserted so that the body is penetrated, the first to the inner peripheral surface of the fastening hole to be screwed to the body The second screw thread corresponding to the first screw thread is formed, and when fastened to the body, it is preferably formed to interfere with the structure.

The clamping part is inserted into the hollow of the body, the insertion hole is formed so that the tension member can be inserted through, the outer diameter is formed to be smaller toward the front based on the tensile stress action direction of the tension member, the insertion hole A collet member formed to be radially separated from the center, and a fixing ring formed to surround the collet member to closely contact the collet member to the other end of the anchor body, and the insertion member inserts the collet member into the hollow. When the collet member is in close contact with the anchor body to increase the fixing force to the anchor body, the inner diameter of the through hole is formed to decrease toward the rear with respect to the tensile stress action direction of the tension member.

The tensile force adjustment bracket according to the present invention has the advantage that can be adjusted so that the tensile stress acting on the tension member to adjust the tensile stress acting on the tension member by moving forward and backward from the structure body is installed to secure the structure.

1 is a perspective view of a tension adjusting bracket according to an embodiment of the present invention,
2 is a cross-sectional view of the tension adjusting bracket of FIG.

Hereinafter, the tensile force adjustment bracket according to a preferred embodiment of the present invention with reference to the accompanying drawings will be described in more detail.

1 and 2 illustrate a tension control bracket 10 according to an embodiment of the present invention.

Referring to the drawings, the tensile force adjustment bracket 10 is a hollow body 20 and the tension member 11 installed in the structure 12, the tension member 11 is installed at the end of the tension member 11 can be inserted through ) With respect to the structure 12 along the direction of tensile stress acting on the clamping portion 30 for clamping the clamping portion 30 to be fixed to the body 20 and the tension member 11 to adjust the tensile stress acting on the tensioning agent. 20 is provided with a transfer member 40 for advancing back and forth.

At this time, the tension member 11 is composed of a wire extending in the longitudinal direction, it is inserted through the boring hole 13 formed in the structure 12, such as the earth plate installed on both sides with the earth wall therebetween. Although not shown in the drawings, both ends of the tension member 11 are provided with a tension control bracket 10 according to the present invention is fixed to the structure 12, respectively.

In the illustrated example, the tension member 11 in which the tension control bracket 10 is installed is shown as a wire installed in the structure 12, but the tension member 11 is not limited to the illustrated example, but one end is fixed to the ground. It may be composed of a sieve.

The body 20 has a binding portion 21 extending along the longitudinal direction of the tension member 11 and a screw portion 22 extending at one end opposite to the structure 12.

The binding portion 21 is provided with a first hollow 23 so that the tension member 11 can be inserted, and is formed in a cylindrical shape having a predetermined radius. At this time, the binding portion 21 is larger than the inner diameter of the drilling hole 13 so that when the screw portion 22 is introduced into the drilling hole 13 of the structure 12, it is prevented from entering into the drilling hole 13 It is preferable to form in an outer diameter.

The first hollow 23 presses the clamping portion 30 when the clamping portion 30 moves in a direction adjacent to the structure 12 by the tensile stress acting on the tension member 11 to thereby secure the fixing force to the tension member 11. In order to improve the inner diameter is formed to become smaller from one end to the other end.

The screw portion 22 extends in a direction parallel to the longitudinal direction of the tension member 11 at one end of the binding portion 21, and has a second hollow 24 communicating with the first hollow 23 at the center portion. do. At this time, the second hollow 24 is formed to extend in parallel with the longitudinal direction of the tension member 11, it is formed to have an inner diameter larger than the outer diameter of the tension member 11 so that the tension member 11 can be easily inserted through. desirable.

In addition, when the screw portion 22 is installed in the structure 12, it is formed with an outer diameter smaller than the inner diameter of the drilling hole 13 so that it can be inserted into the drilling hole 13 of the structure 12, the outer peripheral surface transfer member ( The first screw thread is formed along the longitudinal direction so as to be screwed with 40).

The body 20 constructed as mentioned above is inserted into the drilling hole 13 of the structure 12, and is moved forward and backward with respect to the structure 12 along the direction of tensile stress action of the tension member 11 by the transfer member 40. It is true.

The clamping part 30 is installed at the other end of the tension member 11 penetrated through the body 20 and inserted into the hollow of the body 20, and includes a collet member 31 and a fixing ring 32.

The collet member 31 has an insertion hole formed to allow the other end of the tension member 11 to be penetrated therethrough, and is formed to extend in the longitudinal direction of the tension member 11 and is radially separated from the insertion hole.

In the illustrated example, the structure in which the collet member 31 is divided into three has been described, but the collet member 31 is not limited to the illustrated example, but may be divided into two or more according to the thickness of the tension member 11.

The collet member 31 is in close contact with the tension member 11 by the inner circumferential surface of the first hollow 23 of the binding portion 21 when the collet member 31 moves in a direction adjacent to the structure 12 by the tensile stress acting on the tension member 11. It is preferable that the outer diameter becomes smaller toward the front with respect to the tensile stress acting direction of the tension member 11 so that the fixing force to the (11) can be improved.

In addition, the collet member 31 is provided with an installation groove 33 along the circumferential direction so that the fixing ring 32 can be inserted into the outer peripheral surface of the rear end based on the tensile stress acting direction of the tension member 11.

The fixing ring 32 is formed in an annular shape so as to be inserted into the installation groove 33 of the collet member 31 installed in the tension member 11, and the predetermined ring so that the collet member 31 can be brought into close contact with the tension member 11. It is preferably formed of a material having elasticity.

The body 20 is inserted into the other end of the tension member 11 inserted into the drilling hole 13 of the structure 12, and then the clamping mentioned above at the other end of the tension member 11 penetrated into the body 20. The unit 30 is installed. At this time, the tension member 11 is tensioned to allow the tensile stress to act, and then the clamping part 30 is inserted into the first hollow 23 of the binding portion 21. The clamping part 30 is moved in a direction adjacent to the structure 12 by the tensile stress acting on the tensile force, the collet member 31 is in close contact with the tension member 11 by the inner peripheral surface of the first hollow 23, the tension member The other end of (11) is clamped to the binding portion 21.

The transfer member 40 has a fastening hole 41 formed in the center portion thereof so that the screw portion 22 of the body 20 can be inserted therethrough. At this time, the fastening hole 41 is formed with a second screw thread on the inner circumferential surface to be screwed to the screw portion (22).

When the conveying member 40 is fastened to the threaded portion 22 of the body 20, it is formed in a larger cross-sectional area than the drilling hole 13 of the structure 12 so as to interfere with the structure 12, such as a hexagon wrench. It is preferably formed in a hexagonal cross section so that it can be easily rotated through the tool.

Since the transfer member 40 is fastened to the screw portion 22 and interferes with the structure 12, the body 20 is drilled in the structure 12 such that a part of the other end of the body 20 protrudes out of the structure 12. It is installed in the hole 13. At this time, the transfer member 40 adjusts the tightening position of the screw portion 22 of the body 20 to increase or decrease the tension member 11 to control the tensile stress of the tension member (11).

Referring to the installation process of the tension control bracket 10 according to the invention configured as described above in detail as follows.

First, screw the transfer member 40 to the screw portion 22 of the body 20. The other end of the tension member 11 installed in the structure 12 is inserted into the hollow of the body 20 to which the transfer member 40 is fastened. At this time, one end of the tension member 11, it is preferable that the tension force adjustment bracket 10 is installed on the other structure 12 or fixed through the fixing means.

The body 20 into which the tension member 11 is inserted is moved in a direction adjacent to the structure 12 so that the end of the screw portion 22 is inserted into the drilling hole 13 of the structure 12. Elongate the tensile material to act on the tension member 11, install the collet member 31 on the outer peripheral surface of the other end of the tension member 11 penetrating the body 20, and then the installation groove 33 of the collet member 31 ) And the collet member 31 is brought into close contact with the outer peripheral surface of the tension member 11 by installing the fixing ring 32. The collet member 31 tensioned to the tension member 11 by the fixing ring 32 is inserted into the first hollow 23 of the binding portion 21 of the body 20 so that the other end of the tension member 11 is bound to the binding portion ( 21) and the collet member. At this time, since the outer circumferential surface of the collet member 31 and the inner circumferential surface of the first hollow 23 of the binding portion 21 are tapered to correspond to each other, the tension member 11 is clamped by a tensile stress acting on the tension member 11.

As mentioned above, when the tensile stress is increased on the tension member 11 installed in the body 20, the transfer member 40 is spaced apart from the structure 12 so that the binding portion 21 of the body 20 is separated from the structure 12. Rotate At this time, since the other end portion of the tension member 11 is restrained by the clamping portion 30 to the body 20, the body 20 extends when spaced apart from the structure 12, and the tension member 11 corresponds to the stretched length. The tensile stress acting on the membrane increases.

On the other hand, when reducing the tensile stress on the tension member 11, the conveying member 40 is rotated so that the binding portion 21 of the body 20 is adjacent to the structure (12). At this time, the tension member 11 is compressed, the tensile stress acting on the tension member 11 corresponding to the compressed length is reduced.

Tensile force adjustment bracket 10 according to the present invention configured as described above can adjust the tensile stress acting on the tension member 11 by moving back and forth from the structure 12, the body 20, the tension member 11 is installed in the tension member Even if (11) is stretched, there is an advantage that can be adjusted to act on the tensile stress suitable for fixing the structure (12).

Although the present invention has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent embodiments thereof are possible.

Accordingly, the true scope of protection of the present invention should be determined only by the appended claims.

10: Tensile force adjustment bracket
11: tensile material
12: Structure
20: body
21: Binding
22: screw part
23: First Hollow
24: Second Hollow
30: clamping part
31: collet member
32: retaining ring
33: mounting groove
40: transfer member
41: fastening hole

Claims

A body formed with a hollow so that the tension member installed in the structure can be inserted therethrough;
A clamping part installed at an end of the tension member to clamp the tension member to be fixed to the body;
And a conveying member for advancing and retracting the body with respect to the structure along the tensile stress acting direction of the tension member so as to adjust the tensile stress acting on the tension member.

The method of claim 1,
The body is formed with a first screw thread in the longitudinal direction on the outer peripheral surface,
The transfer member has a fastening hole is formed so that the body can be inserted through, the second screw thread corresponding to the first screw thread is formed on the inner peripheral surface of the fastening hole to be screwed to the body, fastening to the body When the tension control bracket, characterized in that formed to interfere with the structure.

The method of claim 2,
The clamping portion
Inserted into the hollow of the body, the insertion hole is formed so that the tension member can be inserted through, the outer diameter is formed to decrease toward the front based on the direction of the tensile stress action of the tension member, radially around the insertion hole A collet member formed to be separated into;
And a fixing ring formed to surround the collet member to closely contact the collet member to the other end of the anchor body.
The insertion member has an inner diameter of the through hole based on the tensile stress acting direction of the tension member so that when the collet member is inserted into the hollow, the collet member may be brought into close contact with the anchor body to increase a fixing force to the anchor body. A tension control bracket, characterized in that formed smaller toward the front.