WO2010134765A2 - 인장재 제거가 가능한 인장분산형 복합앵커체 및 그의 시공방법 - Google Patents
인장재 제거가 가능한 인장분산형 복합앵커체 및 그의 시공방법 Download PDFInfo
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- WO2010134765A2 WO2010134765A2 PCT/KR2010/003192 KR2010003192W WO2010134765A2 WO 2010134765 A2 WO2010134765 A2 WO 2010134765A2 KR 2010003192 W KR2010003192 W KR 2010003192W WO 2010134765 A2 WO2010134765 A2 WO 2010134765A2
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- anchor
- tension
- tension member
- fixing
- permanent
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- 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
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- 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
Definitions
- the present invention relates to a composite ground anchor body and a construction method thereof, and more particularly, to a permanent anchor anchor and a removable tension-distributing anchor by separable combination to secure a permanent anchoring force in the anchorage section,
- the present invention relates to a tensile-dispersion type composite anchor body capable of easily removing a tension member located therein and a construction method thereof.
- ground anchors are used to stabilize structures from excessive stresses, deformations, and displacements in the ground by fixing high-strength tension members, such as PC strands, on both sides of the structure and the ground and applying prestress in civil works. It is a construction material.
- the ground anchor body may be classified into a tension anchor, a compression anchor, and a load distribution anchor that distributes loads in the tension anchor and the compression anchor according to the supporting method of the mounting ground.
- the tensile anchoring method is a method of supporting the ground by the friction force between the ground and the grout by providing a tension to the tension member after inserting the tension member in the perforated ground and filling the grout, as shown in Figs.
- the crack is generated by the tension applied to the tension member 104 in the grout 102, and the load decreases because the progressive fracture occurs due to the creep caused by the load concentration.
- the load transfer distribution is shown as curve 1 (initial loading), but as time passes, curve 3 ( ultimate loading) and the load decreases.
- the compression type anchoring method is a method of generating a compressive force in the grout by confining a polyethylene strand (PE) -coated PC strand to a separate fixture.
- PE polyethylene strand
- the fixture 106 compresses the grout 102, so it is more likely to creep than the tension anchor method.
- the above method has a disadvantage in that a predetermined anchor force cannot be secured in a relatively soft ground because a high strength grout should be used.
- the compressive force acting on the grout 102 as shown in the load change diagram of FIG. 3, load concentration occurs at the tip portion, and such load concentration can destroy the grout.
- the compression type anchor may generate a load reduction (load change degree in FIG. 3), and further, a sudden load reduction may occur due to compression failure.
- load change degree in FIG. 3 load change degree in FIG. 3
- a sudden load reduction may occur due to compression failure.
- the load transfer distribution is changed from the load curve 1 to the load curve 3 to decrease the load.
- the load-distributing anchor method complements the shortcomings of the tension-type anchor method and the load-focused anchor method as shown in FIGS. 5 and 6, and is a method loaded by dispersing the tension-type anchor in various parts.
- this load-distributing anchoring method extreme load concentration should not occur in the anchoring ground and grout 102, and PE coated PC strands without restraint of free portion should be used. It should be easy to apply.
- the load-distributing tensile anchor the load is distributed and loaded on the various tension members 104, so that the anchor force is secured even in a relatively soft ground having less influence on the grout strength. As a result, it can exert high loads in general soils as in rock.
- the load distribution anchor is applied to the ground by distributing the load so that the load reduction is extremely small and the initial load distribution is maintained regardless of time.
- the anchor support of the above-mentioned load-distributing concept is presented in the "friction and tensile force distributed composite ground anchor" of Korean Utility Model Registration No. 0375568, filed and registered by the present applicant. That is, in the composite ground anchoring method, as shown in FIG. 7, the anchoring anchors a, b, and c located in the anchorage section are arranged to form a stepped step, and each tension member 221a and 221b positioned in the free ledger after completion of construction. , 221c is removed from the fixing block 220.
- the method can secure a large anchoring force compared to the tension-type anchor or compression-type anchor constructed by arranging the existing in one line.
- the cap 225 is screwed to the fixing block 220, and the fixing anchor a fixed to the crimping sleeve 231 secures the cap 225. It consists of a structure connected through.
- the cap 225 when the tensioning force is applied to the anchoring anchor a, the cap 225 may be separated from the anchoring block 220 by the tensioning force, and thus the tensioning force may not be imparted to the anchoring anchor a.
- the fixing anchor (a) since the fixing anchor (a) is fixed to the fixing block 220, there is a problem that it is difficult to adjust the allowable anchor force that varies depending on the ground conditions of each site.
- the internal fixing structure in which the tension member 221 is mounted on the fixing block 220 is packed and shipped in the form of a circular bundle during production. Therefore, it is difficult to produce an anchor body in which the anchoring anchor a and the internal fixing body which are not substantially covered are integrated, and the transportation is difficult.
- the present invention has been proposed to solve the above problems, the permanent fixed anchor positioned in the anchorage section and the removable anchor positioned in the free chapter is composed of a complex configuration that can be separated and combined in a permanent fixed anchor It is an object of the present invention to provide a tensile dispersion type composite anchor body capable of securing a permanent anchoring force by applying necessary tensioning force, and removing a tensile material that can easily remove the anchor of a free chapter and a construction method thereof.
- the present invention can be produced by packing and removing only the removable load-distributing anchor can be separated from the permanently fixed anchor removable load-distributing anchor, it is possible to adjust the allowable anchoring force according to the ground conditions of different sites.
- Another object of the present invention is to provide a tensile-dispersion type composite anchor body capable of removing a tensile material and a construction method thereof.
- a fifth step of releasing the wedge bite force of the tension member by pushing the wedge assembly holding the tension material by the reaction force as a reaction force having a magnitude corresponding to the tension force is applied to the tension member;
- it provides a method of constructing a tension-dispersion type composite anchor body capable of removing the tension material comprising a sixth step of removing and removing the tension material from the fixing block.
- a coupler is mounted on an internal fixing body in which a tension member is mounted on a fixing block, and a complex anchor body in which a permanent anchor is screwed to the coupler is introduced into an anchor hole, and then a tensile force is applied to the internal fixing body in the free long section.
- Induced compression dispersion between the grout, and by increasing the friction force between the ground and the grout in the anchoring section can secure an excellent anchoring force than the existing tensile anchors or load-intensive anchors.
- the combination of at least two complex anchors combining the inner fixing body and the permanent anchor on both sides of the coupler, the permanent anchor of these complex anchor body is arranged stepwise in the anchorage section to effect the tensile load dispersion effect in the anchorage section Will be given. Accordingly, the creep phenomenon due to the load can be minimized, and thus, the ground stability can be reliably maximized by maximizing the bearing capacity in the soft ground as well as the general ground.
- 3 and 4 is a conceptual diagram and peripheral friction distribution graph for explaining the load change of the general compression anchor method
- 5 and 6 is a conceptual diagram and peripheral friction distribution graph for explaining the load change of the general load distribution anchor method
- FIG. 8 is a cross-sectional view showing the configuration of the anchor fixture in FIG.
- Figure 9 is a partial cross-sectional view showing the configuration of the first embodiment of the tension-dispersion type composite anchor body capable of removing the tension member according to the present invention.
- FIG. 10 is a cross-sectional view showing a state in which the anchor support and the permanent anchor assembled to the coupler in the first embodiment of the present invention
- FIG. 11 is a cross-sectional view showing a manufacturing process in which the grip sleeve is pressed to the permanent anchor in the first embodiment of the present invention
- FIG. 13 is a cross-sectional view taken along line a-a 'of FIG. 12;
- FIG. 14 is a cross-sectional view taken along line b-b 'of FIG. 12;
- Figure 16 is a partial sectional view showing the configuration of the third embodiment of the tension-dispersion type composite anchor body capable of removing the tension member according to the present invention
- FIG. 17 is a cross-sectional view illustrating a manufacturing process of compressing a grip sleeve to a tension member in a second embodiment of the present invention.
- Fig. 18 is a partial sectional view showing the structure of the fourth embodiment of a tension-dispersion type composite anchor body capable of removing a tension member according to the present invention.
- Tensile dispersion type composite anchor body that can remove the tension member according to the present invention and its construction method is composed of a composite structure capable of separating and combining the permanent anchor positioned in the anchorage section and the internal anchor located in the free chapter as well as the general ground In particular, it is implemented to reliably promote the stability of the ground by maximizing the bearing capacity in the soft ground.
- Figure 9 is a partial cross-sectional view showing the configuration of the first embodiment of the tension-dispersion compound anchor body capable of removing the tension material according to the present invention
- Figure 10 is an anchor support and a permanent anchor assembled to the coupler according to the first embodiment of the present invention
- 11 is a cross-sectional view showing a manufacturing process in which the grip sleeve is pressed to the permanent anchor according to the first embodiment of the present invention.
- the present invention is a fixing block (7) equipped with a tension member (2) introduced into a free long section to provide a tension force, and a wedge assembly (6) for gripping the distal end of the tension member (2).
- An internal fixing body 4 configured; A coupler 8 for mounting the fixing block 7 on one side; A grip sleeve 10 coupled to the other side of the coupler 8; A permanent anchor 12 having a twisted shape of several strands of PC strands and fitted into the grip sleeve 10 to exert an allowable anchoring force in the anchorage section; A block spacer 14 fitted to the outer circumferential surface of the coupler 8 and having a plurality of grooves 14a formed therein for holding the tension member 2 at the periphery thereof; And an anchor body 16 installed at one end of the fixing block 7 to prevent reinforcement of the tension member 2, waterproofing, and detachment of the steel wire.
- the present invention is inserted into the outer circumferential surface of the permanent anchor 12, the strand grip 18 for increasing the binding with the grout put in the anchorage to secure the allowable tensile force according to the increase in friction force; It further includes a support cone 20 fitted to the tip of the permanent anchor 12 in order to prevent the PC strand strand forming the permanent anchor 12 is dismantled.
- the tension member 2 has a structure in which the PC strand 2a made by twisting several strands is covered with a PE tube 2b.
- the internal fixing body 4 having a structure in which the tension member 2 is mounted on the wedge assembly 6 of the fixing block 7 is Korean Patent No. 0418466 filed by the present applicant.
- Korean Patent No. 435070, Korean Utility Model Registration No. 0242474 and Korean Patent No. 0411567 and Swing No. 0435069 of the swing type can be employed. Detailed description will be omitted.
- the fixing block 7 of the inner fixing body 4 has a structure in which a female thread groove 7a for fastening with the coupler 8 is formed at its distal end, which is different from the prior patent structure.
- the strand grip 18 is cylindrical in shape with a concave rounded center.
- the strand grip 18 is not limited to the above shape, and any shape that can increase the binding force with the grout is possible.
- the strand grip 18 can take the form of a polygonal block such as a trapezoidal shape, a square, or a circular disk plate.
- the coupler 8 is formed of a cylindrical block in which a blocking film 8a is formed at an inner central portion, and a stepped groove 8b having female threads is formed in the center of both side ends.
- the coupler (8) is formed with a male screw on one side of the outer surface is fastened to the female screw formed on the fixing block (7).
- the grip sleeve 10 is a male thread processing on the outer circumferential surface to be fastened to the step groove 8b of the coupler 8 without the reduction of the cross-section so that the clamping force can sufficiently bear the tensile force applied to the permanent anchor 12 only by this fastening force. It was. Due to the separation structure of the inner fixing body 4 and the permanent anchor 12, the inner fixing body 4 can be produced together with the tension member 2 in a packing-packed state at the factory, and also easy to be transported. , By anchoring the internal fixing body 4 and the permanent anchor 12 via the coupler 8 in the field, it is possible to simplify the construction of the anchor in the field.
- the permanent anchor 12 fitted to the grip sleeve 10 is crimped and fixed by a drawing process as shown in FIG.
- the insert plate 22 for increasing the fixing force of the permanent anchor 12 is attached to the inner surface of the grip sleeve 10 is drawn through a die (not shown) as shown in the right figure of FIG.
- the insert plate 22 and the permanent anchor 12 are compressed and integrated.
- the composite anchor body 30 constructed and assembled as described above is inserted into the anchor hole to exert a tensile force together with the grout body.
- FIG. 12 is a view illustrating a construction example of a tension-dispersive composite anchor body capable of removing a tension member according to the present invention
- FIG. 13 is a cross-sectional view taken along line a-a 'of FIG. 12
- FIG. 14 is a cross-sectional view taken along line b-b' of FIG.
- the anchor fixing agent 4 is an example of adopting the "internal fixing body for pulling material removal type ground anchor" of the Republic of Korea Patent No. 0435069 of the swing type (swing type).
- the composite anchor body of the present invention is mainly applied to soft ground as well as general ground, and is performed for slope stability or earth wall stability.
- the tip of the portion from which the coating material is removed from the tension member 2 is gripped by the wedge assembly 6 of the inner fixing body 4, and the grip sleeve 10 that compresses the permanent anchor 12 is pressed.
- the compound anchors 30a, 30b, 30c are screwed into the stepped grooves 8b of the coupler 8.
- the composite anchor body (30a, 30b, 30c) is inserted into the anchor hole 32 in the ground.
- the tension member (2) is a compressive dispersion action on the grout body in the free field section
- the permanent anchor 12 in the anchorage site gives a tensile force to the grout body friction force between the ground and the grout body Increase the load on the ground.
- the present invention shows an example of maximizing the tensile force in the section.
- the present invention shows an example in which the permanent anchors 12 of each of the three composite anchor bodies 30a, 30b, and 30c are arranged in a staircase shape with respect to the total length of the anchorage section.
- the present invention is not limited to this example, and it is well known that the composite anchor body 30 can be installed in a range that the block spacer 14 can accommodate according to the ground conditions (depending on the soft ground or the general ground state). Is true.
- the composite anchor body 30 may have two to eight (or nine) arrangements.
- the anchor hole 32 is considerable and several strands of anchors are required, more grooves of the block spacer 14 can be made.
- the stepped arrangement of the composite anchor bodies 30a, 30b, 30c is characterized by that of the composite anchor bodies 30a, 30b, 30c adjacent to each groove of the block spacer 14 fitted in the coupler 8.
- the tension member 2 is held by being fitted. Due to the stepped arrangement of the composite anchor body, the permanent anchors 12 corresponding to the stepped surfaces disperse the ground load continuously so as to secure a predetermined anchor force in the soft ground as well as the general ground.
- the tension member 2 of the three composite anchors 30a, 30b, and 30c fixed to the external fixing body 38 is wrapped with a PP-based textile 40.
- the tension member 2 fixed by the external fixing body 38 is cut by a welding machine to release the tensile force.
- a reaction force of a magnitude corresponding to the tension force acts on the tension member 2, and pushes the wedge assembly 6 which held the tension member 2 by this reaction force.
- the wedge assembly 6 is pushed out, the wedge bite of the tension member 2b is released, so that the PC strand 2a can be easily drawn out from the PE tube 2b of the tension member 2.
- a structure in which a permanently anchored anchor and a tension-dispersion anchor can be detachably combined by adopting a screw method instead of a wedge method as a method used for removing the tension member.
- Fig. 15 is a partial sectional view showing the structure of the second embodiment of the tension-dispersion type composite anchor body capable of removing the tension member according to the present invention.
- the second embodiment of the present invention proposes a structure in which the tension member and the permanent anchor of the inner fixing body are formed of a release steel bar.
- the main feature of the second embodiment of the present invention is to increase the binding force with the grout only by the permanent anchor 50 of the release bar itself.
- a second support cone 54 is further added to the end of the permanent anchor 50. In this case, it is possible to give both the compressive force and the binding force to the grout of the anchorage.
- the fixing block 43 of the inner fixing body 44 is a joint block having a mediating function for fixing the anchor of the free book and the fixing book, and the blocking film 55 formed in the inner central part thereof.
- First and second female threaded grooves 56 and 57 are formed at both sides of the boundary, and a stepped portion 58 for fitting the waterproof coupler 46 into one outer peripheral surface thereof is formed.
- the tension member 42 has a structure in which a release steel bar is inserted into the coating material 42a, and the permanent anchor 50 is formed of a release steel bar which is not coated.
- the first and second connection means is made of a threaded structure processed to the front end of each of the tension member 42 and the permanent anchor 50 made of a release steel bar. Therefore, the tension member 42 and the permanent anchor 50 may be detachably fastened to the first and second female threaded grooves 56 and 57 of the inner fixing body 44.
- the tension member 42 and the permanent anchor 50 are all formed by a deformed steel bar, but the present invention is not limited thereto.
- the tension member 42 and the permanent anchor 50 are not limited thereto. It is well known that at least one of the stranded wire or any other member capable of exerting a tensile force may be employed.
- the permanent anchor 50 is a deformed steel bar, but an example in which the tension member 42 is composed of a stranded wire instead of the deformed steel bar is described, and a structure thereof will be described with reference to FIGS. 16 and 17. .
- the same components as those in the second embodiment are denoted by the same reference numerals.
- the tension member 62 has a structure in which a stranded strand 62a of twisted strands of PC strands is covered with a PE tube 62b.
- the tip of the strand 62a from which the PE tube 62b has been removed is fixed to the grip sleeve 66 in which the male screw 66a is processed on the outer surface so that the cross section is not reduced.
- the strand 62a is crimped and fixed to the grip sleeve 66 by a drawing process as shown in FIG.
- an insert plate 68 is attached to the inner surface of the grip sleeve 66 to increase the fixing force of the strand 62a, and is drawn through a die (not shown) as shown in the right figure of FIG.
- An external thread 66a is machined on the outer surface of the drawn grip sleeve 66 to be fastened to the first female threaded groove 70a of the fixing block 70 so as to sufficiently bear the tensile force applied to the tension member 62 only by the fastening force. do.
- Fig. 18 is a partial sectional view showing the structure of the fourth embodiment of a tension-dispersion type composite anchor body capable of removing a tension member according to the present invention.
- the same components as in the second and third embodiments are denoted by the same reference numerals.
- both the tension member 42 and the permanent anchor 50 are composed of strands.
- the grip sleeve 66 having the above-described structure is installed at the ends of the tension member 42 and the permanent anchor 50 by drawing, and detachably fastened to the internal fixing body 44.
- the permanent anchor 50 is provided with a plurality of strand grips (70) at intervals to increase the binding force with the grout, the support cone for applying a compressive force to the grout at the end of the permanent anchor (50) (54) was further installed.
- the composite anchor body shown in the second to fourth embodiments described above is constructed in the same manner as the construction of the composite anchor bodies 30a, 30b and 30c of the first embodiment.
- the present invention is to be installed in areas where the strength of the ground is degraded due to large-scale land construction, roads, railroads, tunnel construction, etc., where local slopes can be collapsed, and soft grounds. Can be.
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Description
Claims (28)
- 자유장구간에 도입되어 긴장력을 제공하는 인장재와, 상기 인장재의 선단부를 파지하기 위한 웨지조립체가 장착된 정착블록을 포함하는 내부정착체;일측에 내부정착체를 장착하기 위한 연결매개수단;상기 연결매개수단의 타측에 결합되는 그립슬리브; 및상기 그립슬리브에 끼워져 고정되며, 정착장 구간에서 허용앵커력을 발휘하는 영구 앵커를 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 1 항에 있어서,상기 연결매개수단의 외주면에 끼워지며, 주연부에 인장재를 끼워 지지하기 위한 다수의 홈이 형성되어 있는 블록스페이서를 더 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 1 항에 있어서,상기 영구 앵커의 외주면에 끼워지며, 정착장에 투입된 그라우트와의 결속을 증대시키기 위한 스트랜드 그립을 더 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 3 항에 있어서,상기 영구앵커의 선단에 끼워지는 서포트 콘을 더 포함하며,상기 스트랜드 그립은중앙부가 오목하게 라운딩되어진 원통, 사다리꼴 도형, 사각형을 포함하는 다각형 블록, 원형 디스크판중 선택된 하나로 이루어진 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 1 항에 있어서,상기 내부정착체의 일단부에 설치되어 인장재의 보강과, 그라우팅에 따른 방수와 강선의 이탈을 방지하기 위한 앵커몸체를 더 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 1 항에 있어서,상기 내부정착체의 정착블록은 선단부 내측에 암나사홈이 형성되며,상기 연결매개수단은 내부 중앙부에 형성된 차단막을 경계로 양측 중앙내부에 암나사가 형성된 단차홈이 형성되며, 일측 외면에는 정착블록의 암나사홈에 체결되기 위한 수나사가 형성된 원통형 블록의 커플러(Coupler)로 이루어진 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 6 항에 있어서,상기 그립슬리브는 커플러의 단차홈내에서 암나사와 체결되도록 외주면에 단면의 축소가 없는 수나사가 가공되어 있는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 1 항에 있어서,상기 그립슬리브 내면에 장착되어 고정력을 증대시키기 위한 인서트판이 더 포함되며, 상기 영구 앵커와 그립슬리브는 인발가공에 의해 결합되는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 내부정착체의 웨지조립체에 인장재의 선단을 물리고, 내부정착체의 정착블록과 영구 앵커를 압착시킨 그립슬리브를 커플러의 양측에 나사체결하여 구성한 복합앵커체를 적어도 2개 이상 마련하여 앵커공에 삽입하되, 커플러 외면에 끼워진 블록스페이서의 각 홈에 인접한 복합앵커체의 인장재를 끼워 각 복합앵커체의 영구 앵커들이 계단형태로 배열되도록 한 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 내부정착체의 웨지조립체에 인장재의 선단을 물리고, 내부정착체의 정착블록과 영구앵커를 압착시킨 그립슬리브를 커플러의 양측에 나사체결하여 복합앵커체를 구성하는 제1 단계;상기 적어도 2개 이상의 복합앵커체의 각 커플러 외면에 블록스페이서를 끼우되, 상기 블록 스페이서의 홈에 인접한 복합앵커체의 인장재를 끼우고, 각 복합앵커체의 영구 앵커들을 계단형태로 배열하여 앵커공에 삽입하는 제2 단계;상기 앵커공에 그라우트재를 충전하여 정착시킨 후 인장재에 인장력을 부여한 상태에서 사면에 설치된 외부정착체에 고정하는 제3 단계;앵커시공의 완료 후, 외부정착체에 의해 정착된 인장재를 용접기등으로 절단하여 인장력을 해제하는 제4 단계;인장력에 상응하는 크기의 반력이 인장재에 작용됨에 따라, 이 반력에 의해 인장재를 물고 있던 웨지조립체를 밀어 인장재의 웨지물림력을 해제하는 제5 단계; 및상기 인장재를 내부정착체로부터 인출하여 제거하는 제6 단계를 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체의 시공방법.
- 제 10 항에 있어서,상기 제2 단계는 영구 앵커와 그라우트체와의 마찰력을 증대시키기 위하여 상기 영구 앵커의 외면에 다수의 스트랜드 그립을 소정 간격마다 끼우는 과정을 포함하는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체의 시공방법.
- 자유장구간에 도입되어 긴장력을 제공하는 인장재와, 상기 인장재의 강연선 선단부를 분리가능하게 결합하는 정착블록을 포함한 내부정착체;상기 내부정착체에 인장재를 결합 및 분리시키기 위한 제1 연결수단;상기 내부정착체의 타측에 선단부를 끼워 고정하며, 정착장 구간에서 허용앵커력을 발휘하는 영구 앵커; 및상기 내부정착체에 영구앵커를 결합하기 위한 제2 연결수단을 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 12 항에 있어서,상기 내부정착체의 외주면에 끼워지며, 주연부에 인장재를 끼워 지지하기 위한 다수의 홈이 형성되어 있는 블록스페이서를 더 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 12 항에 있어서,상기 내부정착체의 정착블록은 내부 중앙부에 형성된 차단막을 경계로 양측 중앙 내부에 암나사 홈이 형성된 원통형 조인트 블록으로 이루어지며,상기 제1 및 제2 연결수단은상기 정착블록의 양측 암나사홈에 각각 체결되도록 인장재와 영구앵커 각각의 선단부에 형성된 수나사로 이루어진 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 12 항 또는 제 13 항에 있어서,상기 내부정착체의 정착블록은내부 중앙부에 형성된 차단막을 경계로 양측 중앙 내부에 암나사 홈이 형성되고, 일측 외주면에 단차구간이 형성되며;상기 정착블록의 단차구간에 끼워지며, 그라우트의 수분과 외부의 이물질이 정착블록의 암나사홈으로 유입되는 것을 차단하기 위한 방수커플러; 및상기 방수커플러와 정착블록의 단차구간 사이에 설치된 수밀수단을 더 포함하며,상기 제1 및 제2 연결수단은정착블록의 양측 암나사홈에 각각 체결되도록 인장재와 영구앵커 각각의 선단부에 형성된 수나사로 이루어진 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 15 항에 있어서,상기 인장재는피복재와, 상기 피복재 내에 감싸여져 인장되는 이형강봉 또는 강연선중 선택된 하나로 이루어진 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 15 항에 있어서,상기 인장재 및 영구앵커중 적어도 하나가 이형강봉으로 이루어진 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 15 항에 있어서,상기 인장재는피복재와, 상기 피복재에 감싸여져 있는 강연선을 포함하며;상기 강연선의 선단부에 결합되며, 외주면에 수나사가 가공되어 있는 그립 슬리브; 및상기 그립슬리브 내면에 장착되어 강연선과의 고정력을 증대시키기 위한 인서트판을 포함하며,상기 강연선과 그립슬리브는 인발가공에 의해 결합되는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 15 항에 있어서,상기 인장재는피복재와, 상기 피복재에 감싸여져 있는 강연선으로 이루어지며;상기 영구앵커는 강연선으로 이루어지며;상기 강연선 각각의 선단부에 결합되며, 외주면에 수나사가 가공되어 있는 그립 슬리브; 및상기 그립슬리브 내면에 장착되어 강연선과의 고정력을 증대시키기 위한 인서트판을 포함하며,상기 강연선과 그립슬리브는 인발가공에 의해 결합되는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 12 항에 있어서,상기 영구앵커의 선단에 끼워지는 서포트 콘을 더 포함하는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 피복이 제거된 인장재의 선단을 내부정착체의 정착블록 일측에 분리가 가능하도록 결합하고, 상기 내부정착체의 타측에 영구앵커의 선단부를 결합하여 구성한 복합앵커체를 적어도 2개 이상을 앵커공에 삽입하되, 내부정착체 외면에 블록스페이서를 끼워 설치하고, 상기 블록스페이서의 각 홈에 인접한 복합앵커체의 인장재를 끼워 각 복합앵커체의 영구 앵커들이 계단형태로 배열되도록 한 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 21 항에 있어서,상기 내부정착체의 정착블록은 양측 중앙 내부에 암나사홈이 형성되고, 상기 양측 암나사홈에 체결되도록 인장재 및 영구앵커 각각의 선단부에 수나사부가 형성되며, 상기 인장재 및 영구앵커는 이형강봉으로 이루어진 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 21 항에 있어서,상기 내부정착체의 정착블록은 양측 중앙 내부에 암나사홈이 형성되고,상기 인장재는 강연선으로 이루어지고, 영구앵커는 이형강봉으로 이루어지며,상기 인장재는 그의 선단을 끼워 압착한 그립 슬리브의 포함하되, 상기 그립슬리브의 외면에 수나사부를 형성하여 정착블록의 일측 암나사홈에 체결하고, 상기 영구앵커의 선단부에 수나사부를 형성하여 정착블록의 타측 암나사홈에 체결하는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 제 21 항에 있어서,상기 내부정착체의 정착블록은 양측 중앙 내부에 암나사홈이 형성되고,상기 인장재 및 영구앵커는 강연선으로 이루어지며,상기 인장재 및 영구앵커는 그들의 선단을 끼워 압착한 그립 슬리브의 포함하되, 상기 그립슬리브의 외면에 수나사부를 형성하여 정착블록의 양측 암나사홈에 각각 체결하는 것을 특징으로 하는 인장재 제거가 가능한 인장분산형 복합앵커체.
- 상기 내부정착체의 정착블록의 양측 중앙 내부에 암나사홈을 형성하고, 상기 정착블록의 양측 암나사홈에 인장재와 영구앵커를 각각 분리가능하도록 체결한 복합앵커체를 구성하는 제1 단계;적어도 2개 이상의 복합앵커체의 내부정착체 외면에 블록스페이서를 끼우되, 상기 블록스페이서의 각 홈에 인접한 복합앵커체의 인장재를 끼워 각 복합앵커체의 영구 앵커들이 계단형태로 배열하여 앵커공에 삽입하는 제2 단계;상기 앵커공에 그라우트재를 충전하여 정착시킨 후 인장재에 인장력을 부여한 상태에서 사면에 설치된 외부정착체에 고정하는 제3 단계;앵커시공의 완료 후, 외부정착체에 의해 정착된 인장재를 용접기등으로 절단하여 인장력을 해제하는 제4 단계; 및상기 내부정착체의 정착블록에 체결되어 있는 자유장부의 인장재를 회전시켜 체결력을 해제한 후 인출하여 제거하는 제5 단계를 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체의 시공방법.
- 제 25 항에 있어서,상기 제1 단계는상기 인장재 및 영구앵커가 강연선으로 이루어진 경우, 상기 강연선의 선단에 그립 슬리브를 끼워 압착하되, 상기 그립슬리브의 외면에 수나사부를 형성하여 정착블록의 암나사홈에 체결하는 과정을 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체의 시공방법.
- 제 25 항에 있어서,상기 제1 단계는상기 인장재 및 영구앵커가 이형강봉으로 이루어진 경우, 상기 이형강봉의 선단부에 수나사부를 형성하여 정착블록의 양측 암나사홈에 체결하는 과정을 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체의 시공방법.
- 제 25 항에 있어서,상기 제1 단계는상기 인장재 및 영구앵커중 어느 하나가 강연선으로 이루어지고, 다른 하나가 이형강봉으로 이루어진 경우, 상기 강연선의 선단에 수나사를 갖는 그립 슬리브를 끼워 압착하고, 이형강봉의 선단부에는 수나사를 직접 형성하여 정착블록의 양측 암나사홈에 각각 인장재와 영구앵커를 체결하는 과정을 포함하는 인장재 제거가 가능한 인장분산형 복합앵커체의 시공방법.
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US13/321,711 US8882395B2 (en) | 2009-05-20 | 2010-05-20 | Tension dispersion-type complex anchor body with a removable tension member, and method for constructing same |
ES10777952.2T ES2609692T3 (es) | 2009-05-20 | 2010-05-20 | Cuerpo de anclaje complejo de tipo dispersión de tensión con un tensor extraible y procedimiento para construir el mismo |
CN201080022000.1A CN102428233B (zh) | 2009-05-20 | 2010-05-20 | 具有能移除的拉力构件的拉力分散型复合锚体及其构造方法 |
EP10777952.2A EP2434058B1 (en) | 2009-05-20 | 2010-05-20 | Tension dispersion-type complex anchor body with a removable tension member, and method for constructing same |
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KR1020090043796A KR101074085B1 (ko) | 2009-05-20 | 2009-05-20 | 인장재 제거가 가능한 인장분산형 복합앵커체 및 그의 시공방법 |
KR10-2009-0043796 | 2009-05-20 | ||
KR10-2009-0085561 | 2009-09-10 | ||
KR1020090085561A KR101158417B1 (ko) | 2009-09-10 | 2009-09-10 | 인장재 제거가 가능한 인장분산형 복합앵커체 및 그의 시공방법 |
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US4160615A (en) * | 1978-03-23 | 1979-07-10 | The International Nickel Company, Inc. | Cable rock anchor |
JPS5651080Y2 (ko) | 1978-12-19 | 1981-11-30 | ||
GB8321550D0 (en) * | 1983-08-10 | 1983-09-14 | Dividag Systems Ltd | Anchor |
US5253960A (en) * | 1992-08-10 | 1993-10-19 | Scott James J | Cable attachable device to monitor roof loads or provide a yieldable support or a rigid roof support fixture |
US5511909A (en) * | 1994-06-07 | 1996-04-30 | Jennmar Corporation | Cable bolt and method of use in supporting a rock formation |
US6056482A (en) * | 1996-01-11 | 2000-05-02 | Jennmar Corporation | Cable bolt head |
US5919006A (en) * | 1997-02-14 | 1999-07-06 | Jennmar Corporation | Tensionable cable bolt with mixing assembly |
KR200261932Y1 (ko) | 1998-10-01 | 2002-04-13 | 최영근 | 압축형제거용앵커 |
JP2002266347A (ja) | 2001-03-07 | 2002-09-18 | Taisei Corp | 荷重分散型アンカーの緊張方法およびその緊張用治具 |
KR100473789B1 (ko) | 2002-08-07 | 2005-03-10 | (주) 코리아에스이 | 수지 코팅된 강연선을 이용한 마찰인장형 영구앵커 |
KR200313707Y1 (ko) | 2002-11-13 | 2003-05-22 | (주) 부성산업엔지니어링 | 영구 그라운드 앵커 |
KR200375568Y1 (ko) | 2004-11-11 | 2005-03-11 | 주식회사 삼우기초기술 | 마찰력 및 인장력 분산형 복합 그라운드 앵커 |
EP2318659B1 (en) * | 2008-08-11 | 2017-12-13 | Sandvik Mining And Construction RSA (Pty) Ltd | Rock anchor cable |
-
2010
- 2010-05-20 CN CN201080022000.1A patent/CN102428233B/zh active Active
- 2010-05-20 WO PCT/KR2010/003192 patent/WO2010134765A2/ko active Application Filing
- 2010-05-20 ES ES10777952.2T patent/ES2609692T3/es active Active
- 2010-05-20 EP EP10777952.2A patent/EP2434058B1/en active Active
- 2010-05-20 MY MYPI2011005565A patent/MY158180A/en unknown
- 2010-05-20 US US13/321,711 patent/US8882395B2/en active Active
Non-Patent Citations (1)
Title |
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See references of EP2434058A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN102428233A (zh) | 2012-04-25 |
WO2010134765A3 (ko) | 2011-03-31 |
MY158180A (en) | 2016-09-15 |
EP2434058B1 (en) | 2016-10-26 |
US20120070235A1 (en) | 2012-03-22 |
US8882395B2 (en) | 2014-11-11 |
CN102428233B (zh) | 2015-11-25 |
EP2434058A2 (en) | 2012-03-28 |
ES2609692T3 (es) | 2017-04-21 |
EP2434058A4 (en) | 2015-09-09 |
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