WO2003083316A1 - Verbundanker - Google Patents
Verbundanker Download PDFInfo
- Publication number
- WO2003083316A1 WO2003083316A1 PCT/EP2003/001819 EP0301819W WO03083316A1 WO 2003083316 A1 WO2003083316 A1 WO 2003083316A1 EP 0301819 W EP0301819 W EP 0301819W WO 03083316 A1 WO03083316 A1 WO 03083316A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mortar
- anchor
- expansion
- borehole
- anchor rod
- Prior art date
Links
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 61
- 238000004873 anchoring Methods 0.000 claims abstract description 28
- 239000002131 composite material Substances 0.000 claims description 41
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 1
- 239000003708 ampul Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002313 adhesive film Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 210000002105 tongue Anatomy 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
- F16B13/14—Non-metallic plugs or sleeves; Use of liquid, loose solid or kneadable material therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
Definitions
- the invention relates to a composite anchor for anchoring in a borehole by means of mortar with the features of the preamble of claim 1.
- Such a composite anchor is known from DE 197 12425 A1.
- the known composite anchor has an anchor rod with an anchoring section in which the anchor rod widens several times in the shape of a truncated cone in the direction of a front end of the anchor rod.
- the anchor rod is provided with an external thread, which forms a device for fastening an object.
- Other devices for attaching an object are also conceivable.
- the known composite anchor is introduced with its anchoring section first into a borehole into which a quantity of mortar has previously been introduced.
- the anchoring section first pushes the mortar to the bottom of the borehole and then displaces the mortar, so that the mortar is distributed in a casing space surrounding the anchor rod in the borehole and anchors the composite anchor in the borehole.
- an object to be fastened is placed on the rear end of the anchor rod protruding from the borehole and tightened with a screwed-on nut.
- By tightening the nut exerts a tensile force on the anchor rod, which causes an expansion pressure on the mortar due to the cross-sectional widening of the anchor rod. Anchoring force of the composite anchor in the borehole is thereby improved.
- the cross-sectional widenings of the anchor rod expand the mortar when a tensile force is exerted on the anchor rod (so-called spreading), as a result of which the composite anchor remains anchored in the borehole.
- spreading a tensile force is exerted on the anchor rod
- the known composite anchor can only be loaded after the mortar has hardened. The invention is therefore based on the object of developing a composite anchor of the type explained above in such a way that it enables immediate attachment of an object.
- the anchor rod of the composite anchor according to the invention has an expansion body »at its front end, on which an expansion sleeve is located. Behind it, the anchor rod has an anchoring section with at least one frustoconical cross-sectional widening in the direction of the front end.
- the composite anchor according to the invention is anchored in the borehole before the mortar has hardened and can therefore be loaded immediately after setting.
- the composite anchor according to the invention has a mortar channel which penetrates the expansion area in the longitudinal direction.
- mortar which was introduced into the borehole before the connection of the connection anchor and which is displaced through the introduction of the connection anchor into the borehole, passes backwards in the direction of the hole opening through the expansion area.
- the mortar is distributed in the borehole and fills the mantle space surrounding the anchor rod in the borehole. It is also possible to introduce so much mortar into the borehole that the mortar also fills a shell space surrounding the anchor rod in a through hole of an object to be fastened.
- the object to be fastened is placed on an anchoring base in which the borehole is located, with the through hole of the object being congruent with the borehole.
- the mortar channel penetrating the expansion area has the advantage that the mortar can be introduced into the borehole before the composite anchor is introduced. This allows the mortar to be introduced simply, for example, using an injection gun or by introducing an ampoule containing a measured amount of mortar, which is destroyed by introducing the composite anchor.
- the complete filling of the jacket space surrounding the anchor rod in the borehole up to its mouth and in the push-through hole of an object to be fastened, which is possible with the composite anchor according to the invention, has the further advantage of a play-free transverse support. The transverse and dynamic resilience of the composite anchor according to the invention is thereby improved.
- Both the expansion body with the expansion sleeve and the at least one cross-sectional widening in the anchoring section of the anchor rod have a post-expansion behavior, so that the composite anchor according to the invention remains firmly anchored in the borehole even when the borehole is widened.
- Another advantage of the expansion sleeve arranged at the front end of the anchor rod is its distance from a surface of the anchoring base. This prevents spalling or the like from spreading pressure exerted by the spreading sleeve.
- the mortar channel can be formed, for example, by one or more grooves running in the longitudinal direction in the anchor rod.
- the grooves do not necessarily have to run straight, for example they can also be helical.
- Another possibility for forming a mortar channel is to provide the expansion sleeve with continuous slots running in the longitudinal direction.
- This can be done, for example, by designing the expansion sleeve, in which it consists of two expansion legs that can be clipped onto the expansion body and are connected to one another at the end face by a web. The two expansion legs, each enclosing about a quarter of the circumferential surface of the expansion body, are pushed onto the expansion body from the front end of the anchor rod.
- the sheet thickness of the expansion sleeve corresponds approximately to the gap between the outer surface of the expansion body and the borehole wall.
- a mortar channel is thus created between the longitudinal edges of the expansion legs, through which the mortar can rise when it is inserted into the borehole into the rear anchoring section.
- the expansion sleeve is held immovably in the borehole when the anchor rod is pulled in, so that the expansion cone presses the expansion legs radially against the borehole wall and thus causes the anchor to be mechanically anchored.
- a further development of the invention has a perforated disk with a mortar outlet opening, which in the anchored state is penetrated by the rear end of the anchor rod and is placed on an outside of the object to be fastened, which is remote from the anchoring base. If mortar displaced from the borehole emerges from the borehole when the composite anchor is placed, the mortar outlet opening of the perforated disc must be completely filled in the jacket space surrounding the anchor rod in the borehole and in the through hole securing object guaranteed.
- the perforated disc with the mortar outlet opening thus offers a possibility of checking the complete filling of the borehole and the through hole with mortar.
- An embodiment of the invention provides a • keyhole-shaped hole present in the perforated disc, that is a center hole with a radial extension at one point of the circumference.
- a perforated disc is easy to manufacture and ensures that the mortar outlet communicates with the through hole in the object to be fastened.
- One embodiment of the invention provides a self-adhesive end face of the perforated disk, with which the perforated disk can be glued to the object to be fastened. This enables the perforated disk to be attached to the object to be attached without the anchor rod. Furthermore, the perforated disc holds on the object to be fastened without tightening the nut screwed onto the rear end of the anchor rod. This avoids that by inserting the composite anchor into the borehole of mortar displaced from the borehole, the perforated disc lifts off the object to be fastened as long as the nut on the anchor rod has not yet been tightened.
- Figures 1 and 2 a composite anchor according to the invention when setting
- FIGS. 1 and 2 shows a perforated disc of the composite anchor from FIGS. 1 and 2 in
- FIGS 4 and 5 another embodiment of the composite anchor according to the invention.
- the composite anchor 10 according to the invention shown in FIG. 1 has an anchor rod 12 which is provided with a thread 14 at its rear end. A nut 16 is loosely screwed onto the thread 14. Towards the front, the thread 14 is initially followed by a smooth-walled shaft section 18, on which one in FIG. 3 shown perforated disc 20 is arranged.
- the perforated disk 20 has a keyhole-shaped hole 22.
- the hole 22 has an extension in the radial direction at a circumferential point, which forms a mortar outlet opening 24.
- the mortar outlet opening 24 is located laterally next to the anchor rod 12.
- a double-sided adhesive film 26 is glued, which is covered with a protective film (not shown) and secured against soiling.
- the end face of the perforated disc 20 is therefore self-adhesive.
- An anchoring section 28 adjoins the smooth-walled shaft section 18 of the anchoring rod 12 at the front.
- the anchoring section 28 has five anchor cones 30 axially one behind the other and widening in the direction of a front end of the anchor rod 12.
- the anchor cones 30 form cross-sectional widenings of the anchor rod 12.
- the foremost anchor cone 30 merges with a ring step, which forms a stop shoulder 32, into a smooth-walled shaft section, not visible in the drawing, on which an expansion sleeve 34 is arranged.
- the expansion sleeve 34 is divided into expansion tongues 38 by longitudinal slots 36.
- the expansion sleeve 34 has locking and barbing elements 40 known per se.
- the anchor rod 12 has an expansion body designed as an expansion cone 42, which widens towards the front end of the anchor rod 12.
- the expansion cone 42 forms an expansion area with the expansion sleeve 34.
- the anchor rod 12 has grooves which begin at a front end of the anchor rod 12, pass through the expansion cone 42 and the subsequent smooth-walled shaft section, which is covered by the expansion sleeve 34, and the stop shoulder 32 and run out on a cone surface of the first anchor cone 30.
- the grooves form mortar channels 44 which penetrate the spreading area 34 in the longitudinal direction.
- an outer diameter of the expansion sleeve 34 is larger than a largest diameter of the anchor cones 30 and a diameter of the smooth-walled shaft section 18 adjoining the anchor cones 30 and the thread 14 at the rear end of the anchor rod 12.
- a borehole 48 is drilled in the anchoring base 46.
- Mortar 50 is then introduced into the borehole 48, for example injected or introduced into the borehole 48 with a destructible ampoule (not shown). It is not necessary for the mortar 50 to be introduced into a bottom of the borehole 48 as in FIG. 1.
- an object 52 to be fastened is placed on the anchoring base 46, so that a through hole 54 in the object 52 to be fastened is congruent with the borehole 48.
- the composite anchor 10 according to the invention is introduced with its front end ahead through the through hole 54 in the object 52 to be fastened into the borehole 48.
- the front end of the anchor rod 12 first pushes the mortar 50 to the bottom of the borehole (FIG. 1). Any ampoule containing the mortar 50 is destroyed.
- the perforated disc 20 is glued to the object 52 to be fastened with its self-adhesive end face.
- the anchor rod 12 When the anchor rod 12 is inserted further into the borehole 48, the anchor rod 12 displaces the mortar 50, the mortar 50 flows through the mortar channels 44 through the expansion sleeve 34 towards the rear in the direction of an opening of the borehole 48
- the anchor rod 12 is to be introduced into the borehole 48 so deep that the mortar 50 completely fills an outer space surrounding the anchor rod 12 in the borehole 48 and in the through hole 54 in the object 52 to be fastened.
- the complete filling of the jacket space surrounding the anchor rod 12 can be seen and checked at a mortar outlet 56 (FIG. 2) through the mortar outlet opening 24 of the perforated disk 20.
- the expansion cone 42 is then drawn into the expansion sleeve 34 by turning and tightening the nut 16.
- the expansion sleeve 34 is thereby spread out and anchors the composite anchor 10 in the anchoring base 46.
- the composite anchor 10 can be loaded immediately. There is no need to wait for the mortar 50 to harden. After hardening, the mortar 50 supports the anchor rod 12 in the borehole 48 up to its mouth. In addition, the mortar 50 supports the object 52 to be fastened on the anchor rod 12. The too fastening object 52 is thereby supported without play against transverse stress, a dynamic load capacity of the anchor 10 is thereby increased.
- the composite anchor 10 Due to the anchoring cones 30 and the expansion cone 42, the composite anchor 10 according to the invention has a post-expansion behavior: when the borehole 48 is widened, for example as a result of cracking, the anchor rod 12 moves when the nut 16 exerts a tensile load, as a result of which the expansion cone 42 moves deeper into the expansion sleeve 34 is drawn in and this spreads.
- the analogous same effect occurs in the region of the anchor cones 30, which expand the mortar 50 surrounding them, as a result of which the bond between the anchor rod 12 and the borehole 48 or the anchoring base 46 caused by the mortar 50 remains.
- the exemplary embodiment of the composite anchor 10 shown in FIGS. 4 and 5 has an expansion sleeve 34a which consists of two expansion legs 60 which can be clipped onto the expansion body 42.
- the two legs 60 are connected to one another at the end face via a web 62.
- On the outer surface of the expansion legs 60 are protrusion-like locking elements 64 which hold the expansion sleeve 34a immovably in the borehole when the anchor rod 12 is pulled in for mechanical anchoring of the composite anchor 10.
- the two expansion legs 60 each enclose the expansion body 42 to approximately a quarter of its circumferential surface. This leaves a gap between the longitudinal edges 66 of the two expansion legs 60 after insertion into the borehole, through which the mortar can rise to the rear anchoring section 28. If mechanical pre-fastening is not required, the clip-like design of the expansion sleeve 34a allows the expansion sleeve to be removed from the expansion body.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Dowels (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003580724A JP2006504884A (ja) | 2002-03-28 | 2003-02-22 | 複合アンカ |
KR10-2004-7015144A KR20040093191A (ko) | 2002-03-28 | 2003-02-22 | 복합 앵커 |
HU0501106A HUP0501106A2 (en) | 2002-03-28 | 2003-02-22 | Bonding anchor |
EP03706556A EP1488114A1 (de) | 2002-03-28 | 2003-02-22 | Verbundanker |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10213948 | 2002-03-28 | ||
DE10213948.2 | 2002-03-28 | ||
DE10216897.0 | 2002-04-17 | ||
DE2002116897 DE10216897A1 (de) | 2002-04-17 | 2002-04-17 | Verbundanker |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003083316A1 true WO2003083316A1 (de) | 2003-10-09 |
WO2003083316A8 WO2003083316A8 (de) | 2005-03-17 |
Family
ID=28676029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/001819 WO2003083316A1 (de) | 2002-03-28 | 2003-02-22 | Verbundanker |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1488114A1 (de) |
JP (1) | JP2006504884A (de) |
KR (1) | KR20040093191A (de) |
CN (1) | CN1643263A (de) |
HU (1) | HUP0501106A2 (de) |
PL (1) | PL371033A1 (de) |
WO (1) | WO2003083316A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808635A (zh) * | 2012-07-20 | 2012-12-05 | 中国科学院武汉岩土力学研究所 | 一种胀壳式内锚头预应力锚杆及其安装使用方法 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011085058A1 (de) * | 2011-10-24 | 2013-04-25 | Hilti Aktiengesellschaft | Verbundanker |
CN105143574B (zh) * | 2013-03-27 | 2018-06-29 | 韦森多夫系统涂料有限公司 | 用于将脚手架固定在建筑物壁上的结构系统和方法 |
EP3159554A1 (de) * | 2015-10-23 | 2017-04-26 | HILTI Aktiengesellschaft | Verfahren zum festlegen eines spreizankers an einem substrat, bei dem eine aushärtbare masse in den ringraum um den spreizanker eingebracht wird |
CN107091265A (zh) * | 2017-06-14 | 2017-08-25 | 周松桂 | 一种防传热的膨胀螺丝固件 |
CN110513373B (zh) * | 2019-07-02 | 2024-03-15 | 青岛海尔洗衣机有限公司 | 一种洗涤设备安装组件、安装方法及壁挂式洗涤设备 |
CN110594259B (zh) * | 2019-08-15 | 2024-06-07 | 中铁第四勘察设计院集团有限公司 | 一种多级锚栓及其固定方法 |
CN111894565B (zh) * | 2020-07-14 | 2024-03-22 | 中煤科工开采研究院有限公司 | 用于测试围岩中裂缝扩展的装置 |
CN114941544B (zh) * | 2022-05-30 | 2023-02-03 | 中南大学 | 一种双重吸能锚杆及支护方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3969976A (en) * | 1974-09-05 | 1976-07-20 | Peter Amico | Expansion unit |
US5184923A (en) * | 1991-11-08 | 1993-02-09 | Jennmar Corporation | Expansion shell assembly |
US5344257A (en) * | 1992-12-02 | 1994-09-06 | The Eastern Company | Mine roof expansion anchor and bail element |
US5787672A (en) * | 1995-04-28 | 1998-08-04 | Giannuzzi; Louis N. | Centering sleeve and overflow assembly |
-
2003
- 2003-02-22 EP EP03706556A patent/EP1488114A1/de not_active Withdrawn
- 2003-02-22 PL PL03371033A patent/PL371033A1/xx not_active Application Discontinuation
- 2003-02-22 HU HU0501106A patent/HUP0501106A2/hu unknown
- 2003-02-22 CN CNA038071568A patent/CN1643263A/zh active Pending
- 2003-02-22 JP JP2003580724A patent/JP2006504884A/ja active Pending
- 2003-02-22 KR KR10-2004-7015144A patent/KR20040093191A/ko not_active Application Discontinuation
- 2003-02-22 WO PCT/EP2003/001819 patent/WO2003083316A1/de not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3969976A (en) * | 1974-09-05 | 1976-07-20 | Peter Amico | Expansion unit |
US5184923A (en) * | 1991-11-08 | 1993-02-09 | Jennmar Corporation | Expansion shell assembly |
US5344257A (en) * | 1992-12-02 | 1994-09-06 | The Eastern Company | Mine roof expansion anchor and bail element |
US5787672A (en) * | 1995-04-28 | 1998-08-04 | Giannuzzi; Louis N. | Centering sleeve and overflow assembly |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102808635A (zh) * | 2012-07-20 | 2012-12-05 | 中国科学院武汉岩土力学研究所 | 一种胀壳式内锚头预应力锚杆及其安装使用方法 |
Also Published As
Publication number | Publication date |
---|---|
WO2003083316A8 (de) | 2005-03-17 |
CN1643263A (zh) | 2005-07-20 |
PL371033A1 (en) | 2005-06-13 |
KR20040093191A (ko) | 2004-11-04 |
JP2006504884A (ja) | 2006-02-09 |
HUP0501106A2 (en) | 2006-03-28 |
EP1488114A1 (de) | 2004-12-22 |
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