EP1273713A2 - Verfahren zum Herstellen von Stopfsäulen zur Baugrundverbesserung - Google Patents
Verfahren zum Herstellen von Stopfsäulen zur Baugrundverbesserung Download PDFInfo
- Publication number
- EP1273713A2 EP1273713A2 EP02014508A EP02014508A EP1273713A2 EP 1273713 A2 EP1273713 A2 EP 1273713A2 EP 02014508 A EP02014508 A EP 02014508A EP 02014508 A EP02014508 A EP 02014508A EP 1273713 A2 EP1273713 A2 EP 1273713A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- stopfsäule
- soil
- layers
- addition material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
Definitions
- the invention relates to a method for producing so-called Darning columns from unbound addition materials in less load-bearing soil for the purpose of subsoil improvement or stabilization.
- base layer a load transfer in one deeper-lying viable soil layer (base layer) take place;
- base layer a soil compaction between the pillars respectively.
- the production of stuffing columns can no longer in the presence of soft layers, i. fewer sustainable soil layers are used, the no sufficient radial support forces can build up to the Column body under load by loading in the required To support dimension.
- the present invention seeks to propose a method for the production of Stopfchulen, which leads to satisfactory results even in the presence of less viable soil layers (soft layers).
- the solution to this is that a deep vibrator is shaken from the ground surface into the ground, that the Stopfchule is built from bottom to top in Rüttelstopfclar and that at least in soil layers with low supportability (soft layers) Stopfchule is made of fiber-displaced rolligem addition material.
- the fibers used here can be steel fibers, glass fibers or synthetic fibers. Multifilament textile fibers, spliced fibers, fiber bundles or small fiber nets are known which lead to an increase in the shear strength due to the so-called fiber cohesion within the tamping column.
- a favorable length of the individual fibers is on the order of 50 mm.
- Polypropylene fibers have a density of around 0.9 kg / dm 3 .
- the aggregate amount can be in plastic fibers in the order of 2-3 kg fibers per m 3 column material.
- the cohesion value of the fiber-reinforced addition material should be between 5 and 50 kN / m 2 , in particular between 10 and 30 kN / m 2 .
- the column diameter may be in the preferred range of 0.6 to 1.0 m.
- the pitch, after which the individual Stopfkladen are arranged, can be between 1.2 and 3 m.
- As a feedstock binder-free material especially sand is used, but also gravel and gravel are suitable.
- the stuffing column in supportive intermediate layers and / or the base layer made of fiber-free addition material.
- the fiber surcharges represent a cost factor and therefore expediently added only in soft layers, is Hereby an extremely economical use possible without the to impair sufficient load capacity of the stuffing columns.
- Stopf yarn can into a viable soil layer (Base layer).
- the stuffing columns can also end in a less sustainable Bodon für, wherein Floating stuffing columns arise.
- the essential feature of the method is that the Stability of the column body by using a fiber reinforcement is improved wherever the Stopf yarn soft layers interspersed or reaches into soft layers.
- the present stratification of the soil is by preceding Digestion drilling or other ground detection methods too determine.
- the tamping columns according to the invention are not considered the use of z.
- the fiber reinforcement designed in unstable soil layers soft layers
- sand columns are in relation to gravel or gravel columns in relation on the material price particularly favorable to produce.
- Figure 1 is in a vertical section through the bottom of a Stopf yarn 11 which extends from the bottom surface 12 and its pedestal 13 on a load-bearing soil layer 14 (base layer) gets up or extends slightly into this. Above the load-bearing bottom layer 14 is one less sustainable soil layer 15 (soft layer) is shown, which reaches to the surface 12. The border between the two layers is indicated by a dashed line 16.
- the Stopfstedle has on its entire length a fiber reinforcement 17 for increasing the shear strength due to so-called Fiber cohesion.
- stuffer column 11 is shown extending from the ground surface 12 goes out and the pillar base 13 relatively far into one moderately stable soil layer 14 (base layer) extends.
- base layer 14 Above the base layer 14 'is a less supportive Soil layer 15 (soft layer), where the boundary between the two layers with a dashed line 16 is shown.
- a supportive top layer 17 With sufficient Support for unreinforced stuffing columns.
- Exclusively in Area of the soft layer 15 is the column with a fiber reinforcement 17 provided while the column section 18 below and the pillar portion 19 above of unreinforced feed material consist.
- a stuffing column 11 is shown which is from the surface 12 out to the pedestal 13 within a less sustainable soil layer 15 '(soft layer) is located. On your entire length, this column has a fiber reinforcement 17.
- the Column is thus designed as a floating column. A load transfer takes place via the skin friction. The fiber reinforcement share this column increases from the bottom up, as in the symbolic Representation recognizable.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Revetment (AREA)
Abstract
- ein Tiefenrüttler wird von der Bodenoberfläche aus in den Baugrund eingerüttelt;
- die Stopfsäule wird von unten nach oben in Rüttelstopfverfahren aufgebaut;
- zumindest in Bodenschichten (15) mit geringer Stützfähigkeit (Weichschichten) wird die Stopfsäule aus faserversetztem rolligem Zugabematerial hergestellt.
Description
- Figur 1
- zeigt eine erfindungsgemäße Stopfsäule in einer ersten Ausführung;
- Figur 2
- zeigt eine erfindungsgemäße Stopfsäule in einer zweiten Ausführung;
- Figur 3
- zeigt eine erfindungsgemäße Stopfsäule in einer dritten Ausführung.
Claims (20)
- Verfahren zum Herstellen von Stopfsäulen zum Zweck der Baugrundverbesserung bzw. -stabilisierung mit den folgenden Verfahrensschritten zur Herstellung einer der Stopfsäulen;ein Tiefenrüttler wird von der Bodenoberfläche aus in den Baugrund eingerüttelt;die Stopfsäule wird von unten nach oben in Rüttelstopfverfahren aufgebaut;zumindest in Bodenschichten mit geringer Stützfähigkeit (Weichschichten) wird die Stopfsäule aus rolligem Zugabematerial, das mit Fasern versetzt ist, hergestellt.
- Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß die Stopfsäule in stützfähigen Bodenschichten aus Zugabematerial, das nicht mit Fasern versetzt ist, hergestellt wird. - Verfahren nach einem der Ansprüche 1 oder 2,
dadurch gekennzeichnet, daß die Stopfsäule mit einem verdickten Säulenfuß hergestellt wird. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Stopfsäule in einer tragfähigen Bodenschicht (Tragschicht) endet. - Verfahren nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß die Stopfsäule insgesamt schwimmend in Bodenschichten mit geringer Stützfähigkeit (Weichschichten) eingebaut wird. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, daß der Faseranteil in der Stopfsäule von unten nach oben erhöht wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, daß Stahlfasern, Glasfasern oder Kunststoffasern verwendet werden, insbesondere mit einer Länge von ganz ungefähr 50 mm, also etwa 25-75 mm. - Verfahren nach Anspruch 7,
dadurch gekennzeichnet, daß 0,5 bis 5 kg, insbesondere 2-3 kg Fasern je m3 Zugabematerial zugegeben werden. - Verfahren nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet, daß mit Fasern versetztes Zugabematerial mit einem Kohasionswert von 5-50 kN/m2, insbesondere von 10-30 kN/m2 verwendet wird. - Verfahren nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß bindemittelfreies Zugabematerial verwendet wird. - Stopfsäule im Boden zur Baugrundverbesserung bzw. -stabilisierung,
dadurch gekennzeichnet, daß sie zumindest einen Säulenabschnitt aus Zugabematerial, das mit Fasern versetzt ist, umfaßt, der eine Zwischenschicht mit geringer Stützfähigkeit (Weichschicht) durchsetzt. - Stopfsäule nach Anspruch 11,
dadurch gekennzeichnet, daß sie in stützfähigen Zwischenschichten und/oder einer Tragschicht aus Zugabematerial, das nicht mit Fasern versetzt ist, hergestellt ist. - Stopfsäule nach einem der Ansprüche 11 bis 12,
dadurch gekennzeichnet, daß sie mit einem verdickten Säulenfuß hergestellt ist. - Stopfsäule nach einem der Ansprüche 11 bis 13,
dadurch gekennzeichnet, daß sie in einer tragfähigen Bodenschicht (Tragschicht) endet. - Stopfsäule nach einem der Ansprüche 11 bis 13,
dadurch gekennzeichnet, daß sie insgesamt schwimmend in Bodenschichten (Weichschichten) mit geringer Stützfähigkeit eingebaut ist. - Stopfsäule nach einem der Ansprüche 11 bis 15,
dadurch gekennzeichnet, daß der Faseranteil im Zugabematerial jeweils von unten nach oben zunimmt. - Stopfsäule nach einem der Ansprüche 11 bis 16,
dadurch gekennzeichnet, daß das Zugabematerial bindemittelfrei ist. - Stopfsäule nach einem der Ansprüche 11 bis 17,
dadurch gekennzeichnet, daß die Fasern Stahlfasern, Glasfasern oder Kunstoffasern sind, insbesondere solche mit einer Länge von ganz ungefähr 50 mm, also etwa 25-75 mm. - Stopfsäule nach Anspruch 18,
dadurch gekennzeichnet, daß 0,5 bis 5 kg, insbesondere 2-3 kg Fasern je m3 Zugabematerial in dem mit Fasern versetztem Zugabematerial enthalten sind. - Stopfsäule nach einem der Ansprüche 11 bis 19,
dadurch gekennzeichnet, daß sie im Bereich des mit Fasern versetzten Zugabematerials einen Kohasionswert von 5-50 kN/m2, insbesondere von 10-30 kN/m2 hat.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10133122A DE10133122A1 (de) | 2001-07-07 | 2001-07-07 | Verfahren zum Herstellen von Stopfsäulen zur Baugrundverbesserung |
| DE10133122 | 2001-07-07 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1273713A2 true EP1273713A2 (de) | 2003-01-08 |
| EP1273713A3 EP1273713A3 (de) | 2003-07-23 |
| EP1273713B1 EP1273713B1 (de) | 2006-01-11 |
Family
ID=7691055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02014508A Expired - Lifetime EP1273713B1 (de) | 2001-07-07 | 2002-07-01 | Verfahren zum Herstellen von Stopfsäulen zur Baugrundverbesserung |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1273713B1 (de) |
| AT (1) | ATE315687T1 (de) |
| DE (2) | DE10133122A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392527B (zh) * | 2008-10-21 | 2010-10-06 | 冯守中 | 土工织物散体桩处理软基的方法 |
| CN104652407A (zh) * | 2015-01-05 | 2015-05-27 | 同济大学 | 一种带箍筋折叠式土工合成材料异形散体桩及其施工方法 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10333613B4 (de) * | 2003-07-24 | 2011-06-30 | Keller Grundbau GmbH, 63067 | Verbesserung einer Weichschicht |
| CN102168420B (zh) * | 2011-03-15 | 2012-12-19 | 冯守中 | 土工布轻质活性材料桩处理软土地基的方法 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4013801C2 (de) * | 1990-04-28 | 1994-12-22 | Keller Grundbau Gmbh | Verfahren zum Herstellen eines Trag- und/oder Abdichtungskörpers |
| DE4130339C2 (de) * | 1991-09-12 | 2000-12-14 | Keller Grundbau Gmbh | Verfahren zur Verbesserung eines Baugrundes |
| DE19707687C1 (de) * | 1997-02-26 | 1998-10-15 | Wilhelm Dr Degen | Vorrichtung zum Herstellen von Materialsäulen im Boden |
| DE19814021A1 (de) * | 1998-03-30 | 1999-10-14 | Degen Wilhelm | Gerät zum Einbringen eines Fremdstoffes in Böden oder zur Verdichtung des Bodens |
| DE19822290C2 (de) * | 1998-05-18 | 2003-01-02 | Bul Sachsen Gmbh | Verfahren und Einrichtung zur Rütteldruck- und Rüttelstopfverdichtung von bindigem und nichtbindigem Verdichtungsgut |
-
2001
- 2001-07-07 DE DE10133122A patent/DE10133122A1/de not_active Withdrawn
-
2002
- 2002-07-01 AT AT02014508T patent/ATE315687T1/de not_active IP Right Cessation
- 2002-07-01 DE DE50205555T patent/DE50205555D1/de not_active Expired - Lifetime
- 2002-07-01 EP EP02014508A patent/EP1273713B1/de not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392527B (zh) * | 2008-10-21 | 2010-10-06 | 冯守中 | 土工织物散体桩处理软基的方法 |
| CN104652407A (zh) * | 2015-01-05 | 2015-05-27 | 同济大学 | 一种带箍筋折叠式土工合成材料异形散体桩及其施工方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50205555D1 (de) | 2006-04-06 |
| DE10133122A1 (de) | 2003-01-23 |
| ATE315687T1 (de) | 2006-02-15 |
| EP1273713A3 (de) | 2003-07-23 |
| EP1273713B1 (de) | 2006-01-11 |
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