WO2015127488A1 - Bodenfundament und verfahren zur ausbildung eines bodenfundaments - Google Patents
Bodenfundament und verfahren zur ausbildung eines bodenfundaments Download PDFInfo
- Publication number
- WO2015127488A1 WO2015127488A1 PCT/AT2015/050051 AT2015050051W WO2015127488A1 WO 2015127488 A1 WO2015127488 A1 WO 2015127488A1 AT 2015050051 W AT2015050051 W AT 2015050051W WO 2015127488 A1 WO2015127488 A1 WO 2015127488A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sleeve
- vibration
- axial feed
- cutting edge
- anchor
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/56—Screw piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
- E02D5/80—Ground anchors
- E02D5/801—Ground anchors driven by screwing
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/22—Placing by screwing down
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/22—Sockets or holders for poles or posts
- E04H12/2207—Sockets or holders for poles or posts not used
- E04H12/2215—Sockets or holders for poles or posts not used driven into the ground
- E04H12/2223—Sockets or holders for poles or posts not used driven into the ground by screwing
Definitions
- the invention relates to a ground foundation and a method for forming a base foundation, in which an anchor is screwed into the ground and anchored in the ground at least via an external element that generates an axial feed during insertion, in particular via an outside spiral, wherein a vibration parallel to Axial feed direction of the armature is generated.
- a base foundation sleeves are known with cylindrical body, which are screwed into a soil, for example, into the ground or into the rock.
- DE102004059632 shows a sleeve which is open on the front end face and on the outer sleeve side of which an outside spiral is attached in order to generate an axial feed during insertion and also to anchor the sleeve in the bottom.
- a hammer drill is also performed by the sleeve, which loosen up the soil before the sleeve or rock should break.
- the invention is therefore based on the object, starting from the above-described prior art, to improve a method of forming a foundation so that even in hard and / or stony soils a soil foundation with maximum stability can be created quickly and reliably.
- the invention achieves the stated object with regard to the method in that the armature is screwed into the ground with an actively generated vibration in the axial feed direction.
- this anchor can be securely screwed even in a hard and / or rocky soil or rock and are anchored particularly firmly.
- hard clods of earth can be smashed in front of the anchor and on the other hand stones can be shaken or pushed away from the axial path by a combination of vibration and rotational movement.
- the anchor can not only be pushed into the ground in the axial feed direction by the actively generated vibration, but also pulled out again for a short distance.
- the vibration can be transmitted to the armature by a positive or positive connection, such as a press fit.
- a positive or positive connection such as a press fit.
- different force transmission points or surfaces are used for the transmission of the force required for the vibration in the axial direction and axial feed.
- an active vibration a movement around a rest position (e.g., vibration) or a movement from a rest position to a different vibration position and back into this rest position may be considered.
- any screwable means can be used as an anchor. These can be sleeves, ground nails, ground anchors or the like.
- the armature designed as a sleeve which is open at least on the front end side is screwed into the ground while absorbing soil material, the displacement of hard material components by means of the vibration according to the invention can take place against the center of the sleeve without jeopardizing anchoring of the sleeve.
- anchoring the sleeve can also take place in soils that do not allow the insertion of a front closed anchor.
- the sleeve absorbs soil material when screwing in the sleeve via its elliptical opening orifice, which is inclined towards the longitudinal axis of the sleeve, the bottom material must not only be displaced outward and accordingly compressed, but can be forced into the interior of the sleeve during the axial advance. So deep anchors of the sleeve can be carried out in the ground, since hardly any soil material must be compacted.
- due to the inclined opening mouth when screwing in only the foremost portion of the end face in contact with not yet separated soil or the load surface of the sleeve can be kept small. Vibrations can thus be transferred particularly effectively to the not yet separated part of the soil material, which can make a successful introduction of the sleeve in hard and / or stony soils only possible.
- the method may be particularly advantageous if the elliptical opening orifice merging into a front cutting edge separates soil material when the sleeve is screwed in.
- This cutting edge the lowermost end of the inclined cut sleeve is during the insertion of the sleeve of the farthest reaching into the ground, protruding frontal part of the sleeve and will accordingly be in contact with the not yet separated soil. With the help of rotary motion and vibration, this front cutting edge can effectively separate or displace the soil material. A reliable method for introducing the sleeve into hard and / or stony soils is thus created.
- the separation of the soil material can be particularly advantageous.
- the cutting edge may still have a length that can prevent premature wear, such as occurs at very acute angles of inclination. Nevertheless, this inclination angle can ensure a sufficient distance between the front and rear portions of the elliptical opening mouth, so that rotational movement and vibration in the area of the cutting edge can effectively separate the soil material.
- the method can be improved again if the frequency of the vibration in the axial feed direction is greater than or equal to 100 Hz. From this frequency, rocks of different sizes can be displaced particularly effectively by the actively generated vibration according to the invention. Higher frequencies allow a faster screwing of the armature, but it can also cause a correspondingly high stress on the armature and the tool for screwing. Thus, frequencies between 100 and 200 Hz can be a good compromise, allowing fast insertion without excessive strain on the material.
- the vibration amplitude of the vibration lies between 2.5 and 10 mm, hard soil constituents can be loosened or smashed or displaced. On the other hand, the deflections caused by this vibration can still be small enough so that the anchoring of the outer element in the ground is not significantly loosened.
- the method can be particularly distinguished when the oscillation amplitude is preferably 4 mm.
- both a stable anchoring via the outer spiral in the ground can take place and screwing into hard soils can be ensured.
- the method may further be distinguished if the pitch of the outside spiral is between 30 mm and 60 mm, preferably 40 mm. These gradients are steep according to ensure a large axial feed for a quick screwing of the anchor can. Nevertheless, they are shallow enough to enable a stable anchoring in the ground.
- the vibration can not present the risk that the element which generates the axial feed during the screwing in will be overturned by the axial movement of the vibration. Rather, the said element during the short-term backward movements of the armature caused by the vibration can be bent out again, if it was previously bent by a compressive force in the axial direction.
- the invention has set itself the task, starting from the above-described prior art, to improve a sleeve as an anchor for a soil foundation going so that it can be screwed quickly and reliably even in hard and / or rocky or rocky soils.
- the invention achieves the stated object with regard to the sleeve in that the base body forms the front cutting edge at its circular-cylindrical portion, for which purpose the elliptical opening orifice inclined to the longitudinal axis of the sleeve merges into the cutting edge.
- the base body forms the front cutting edge at its circular-cylindrical section, for which purpose the elliptical opening orifice inclined to the longitudinal axis of the sleeve merges into the cutting edge, soil material can be reliably separated and pushed into the hollow space of the sleeve when the sleeve is screwed in.
- This cutting edge is namely during the screwing of the sleeve of the furthest reaching into the ground, protruding portion of the sleeve and the loosened or split soil material in the manner of a blade in the enter closing opening mouth of the sleeve.
- the sleeve can be screwed quickly and reliably even in hard and / or rocky and rocky soils.
- the sleeve may be the anchor of any one of claims 1 to 11.
- the screwing of the sleeve can be further facilitated if the sleeve element is provided on the front cutting edge forming, circular cylindrical portion at least in sections.
- the sleeve can be further improved in handling if the angle of inclination of the elliptical opening mouth to the sleeve longitudinal axis is between 45 and 85 degrees, in particular 80 degrees.
- the separation of the soil material can be particularly advantageous, since here the cutting edge is not so small in the cutting surface made so small that premature wear, as occurs at particularly acute angles of inclination, would be to be feared. Nevertheless, this inclination angle can ensure a sufficient distance between the front and rear areas of the elliptical opening mouth, so that rotational movement and vibration in the region of the cutting edge can effectively separate the soil material at the cutting edge and shovel it into the sleeve.
- the base body widens in diameter at the end in relation to its circular-cylindrical front section, this may be advantageous in the case of superficially soft soils with a hard, stony or rocky lower-lying bottom section.
- the extended end section in the upper, soft floor area can provide a stable anchorage even in soft soils due to the increased diameter, while the narrower circular cylindrical front section can be introduced into hard, rocky or rocky soils.
- a conical portion may be provided between the front portion and the rear portion thereof to facilitate screwing in of the sleeve.
- a floor foundation with a sleeve as an anchor of the kind presented can be particularly distinguished.
- soil in the context of this application includes any loose or hard soil with or without rock and rocky soils. Even the use of this invention for water-covered soils, also called sediments, is conceivable.
- Fig. 1 is a partially torn-open front view of an introduced into the ground sleeve according to a first embodiment
- Fig. 2 is a front view of an alternative sleeve according to a further embodiment.
- FIG. 1 a partially torn-open front view of an armature 100 embodied as a sleeve 1 when driven into the floor 2 according to a first exemplary embodiment is shown.
- the armature 100 is used to form a bottom foundation, not shown, for example, in which the armature 100 not shown supports, support, etc. are attached.
- the sleeve 1 has a circular cylindrical body 15 to ensure a straight driving the sleeve 1 in the bottom 2 and thus avoid compression problems.
- the latter advantage is supplemented by the fact that when screwing in the open at the front end 3 sleeve 1 soil material 4 receives.
- the sleeve 1 is anchored by means of a sleeve element 5 on the outside of the sleeve, namely an outer coil 6, which also translates the rotational movement 7 of the sleeve 1 into an axial advance 8 of the sleeve 1.
- the sleeve 1 is applied during the screwing with a vibration 9 in the axial direction 8.
- the sleeve 1 is reliably introduced into the bottom 2 by combination of vibration 9, rotary motion 7 and the axial feed 8 connected thereto via the outside spiral 6, even in hard and rocky soils 2.
- the method is improved or thus the screwing of the sleeve 1 is accelerated, in which in addition to the vibration 9, a force in the axial feed direction 8 of the sleeve 1 is applied.
- a method for a comparison with the prior art faster screwing the sleeve 1 to form a stable base foundation can be carried out so.
- the sleeve 1 receives soil material 4 when screwing in the manner of a rotating blade.
- the soil material 4 in front of the sleeve 1 therefore does not need to be displaced outward during insertion and accordingly compressed, but is received in the interior of the sleeve 1 during the axial advance 8.
- This allows deep anchoring of the sleeve 1 in the bottom 2, since the inclusion of the soil material 4 reduces the back pressure of the bottom 2.
- the vibration 9 transmits particularly effectively to the not yet part of the bottom part 2.
- the elliptical opening mouth 12 merges into a front cutting edge 13. This forms from the lowest end of the frontal part of the inclined cut sleeve. 1
- the cutting edge 13 effectively separates the soil material 4 during insertion of the sleeve 1 in an inner and outer bottom region, whereby the sleeve 1 are advantageously introduced into the bottom 2 can.
- the sleeve member 5 is also provided on the circular cylindrical portion 15 with the cutting edge 13 sections, which further facilitates the insertion of the sleeve 1.
- the interaction of vibration 9, rotary motion 7, axial feed 8 and cutting edge 13 allows this sleeve 1 to successfully introduce into hard and stony soils 2.
- the inclination angle 14 of the elliptical opening mouth 12 is between 45 and 85 degrees, in particular 80 degrees, the separation of the soil material 4 is particularly reliable.
- the cutting edge 13 is not so far that premature wear is to be feared. Nevertheless, there is a sufficient distance between the front and rear regions of the elliptical opening mouth 12, so that during the rotary movement 7 of the cutting edge 13, the soil material 4 is advantageously separated.
- Vibrations 9 in the axial feed direction 8 greater than or equal to 100 Hz have proven successful in the case of the sleeve 1 according to FIG. 1 for loosening the bottom 2 and for displacing rock 10 of different sizes.
- the bottom 2 is effectively separated under the front side 3 of the sleeve 1, but without the sleeve side outside sleeve member 5 is loosened in the bottom 2.
- the oscillation amplitude of the vibration 9 is adapted to the depth 16 of the axial feed 8 during insertion element 5, in particular the helical depth 16. If the oscillation amplitude is smaller than the helical depth 16, the outer helix 6 can not be completely folded over in the axial movement in the feed direction caused by the vibration 9. In the subsequent backward movement, the outer coil 6 is then largely bent back. Thus, the outer coil 6 remains largely undamaged even in hard, rocky and or rocky soils 2 and causes a reliable anchoring of the sleeve 1 in the bottom of the second
- FIG. 2 shows an alternative embodiment of an armature 101.
- This armature 101 which is also designed as an open sleeve 21, has, in contrast to the armature 100 according to FIG. 1, an end body 23 which widens toward the end.
- the narrower in diameter, circular cylindrical front portion 23 of the body 22 forms the cutting edge 13 with its oval mouth opening 12 from. Due to the smaller diameter there, this front section 23 is also suitable for introduction into hard, rocky or rocky soils 2.
- the base body 22, which is widened in its diameter at the end, with its rear circular-cylindrical section 24 ensures stable anchoring in a soft, or near-surface, bottom layer.
- a conical portion 25 is provided, wherein both portions 23, 25 sleeve member 5, as these are also shown in Fig. 1.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15715661.3A EP3134582A1 (de) | 2014-02-25 | 2015-02-25 | Bodenfundament und verfahren zur ausbildung eines bodenfundaments |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50141/2014 | 2014-02-25 | ||
ATA50141/2014A AT515485A1 (de) | 2014-02-25 | 2014-02-25 | Verfahren zur Ausbildung eines Bodenfundaments |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015127488A1 true WO2015127488A1 (de) | 2015-09-03 |
Family
ID=52823958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2015/050051 WO2015127488A1 (de) | 2014-02-25 | 2015-02-25 | Bodenfundament und verfahren zur ausbildung eines bodenfundaments |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3134582A1 (de) |
AT (1) | AT515485A1 (de) |
WO (1) | WO2015127488A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1098555A (en) | 1965-03-29 | 1968-01-10 | Bekaert Pvba Leon | Improvements in or relating to posts |
DE102004059632A1 (de) | 2004-12-10 | 2006-06-14 | Krinner Innovation Gmbh | Fundamenteinrichutng für stabförmige Bauteile mit mehrfach verwendbarem Werkzeug sowie Vorrichtung zum einbringen einer derartigen Fundamenteinrichtung |
DE102008011869A1 (de) | 2008-02-29 | 2009-09-10 | Peter Kellner | Schraubfundament |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2360809B (en) * | 2000-03-28 | 2004-02-25 | Screw Fast Foundations Ltd | A screw pile and method of installation |
NL2005672C2 (nl) * | 2010-11-11 | 2012-05-14 | Hillcon Piling Equipment B V | Werkwijze en inrichting voor het brengen van een funderingselement in een ondergrond. |
-
2014
- 2014-02-25 AT ATA50141/2014A patent/AT515485A1/de not_active Application Discontinuation
-
2015
- 2015-02-25 EP EP15715661.3A patent/EP3134582A1/de not_active Withdrawn
- 2015-02-25 WO PCT/AT2015/050051 patent/WO2015127488A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1098555A (en) | 1965-03-29 | 1968-01-10 | Bekaert Pvba Leon | Improvements in or relating to posts |
DE102004059632A1 (de) | 2004-12-10 | 2006-06-14 | Krinner Innovation Gmbh | Fundamenteinrichutng für stabförmige Bauteile mit mehrfach verwendbarem Werkzeug sowie Vorrichtung zum einbringen einer derartigen Fundamenteinrichtung |
DE102008011869A1 (de) | 2008-02-29 | 2009-09-10 | Peter Kellner | Schraubfundament |
Also Published As
Publication number | Publication date |
---|---|
AT515485A1 (de) | 2015-09-15 |
EP3134582A1 (de) | 2017-03-01 |
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