EP1520938A2 - Verfahren und Prüfanordnung zum Bestimmen des Tragverhaltens von Verdrängungspfählen - Google Patents
Verfahren und Prüfanordnung zum Bestimmen des Tragverhaltens von Verdrängungspfählen Download PDFInfo
- Publication number
- EP1520938A2 EP1520938A2 EP04019985A EP04019985A EP1520938A2 EP 1520938 A2 EP1520938 A2 EP 1520938A2 EP 04019985 A EP04019985 A EP 04019985A EP 04019985 A EP04019985 A EP 04019985A EP 1520938 A2 EP1520938 A2 EP 1520938A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pile
- test
- strand
- head
- ground
- 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.)
- Withdrawn
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- 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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/36—Concrete or concrete-like piles cast in position ; Apparatus for making same making without use of mouldpipes or other moulds
Definitions
- the invention relates to a method for determining the carrying behavior of displacement piles, which by introducing a borehole by means of a displacer head and then Fill the borehole with a hardenable suspension made while leaving the displacer head downhole be created, with a test pile and by means of a Loading device subjected to a test load is measured and by means of a measuring device, the bearing behavior becomes.
- the invention further relates to a test arrangement for determining the carrying behavior of displacement piles.
- test piles can then be subjected to a predetermined test load become, whereby then the appropriate carrying behavior, in particular a settlement of the pile, can measure.
- the test pile by means of a load device applied, which a predetermined pressure on the test pile exercises.
- a load device applied, which a predetermined pressure on the test pile exercises.
- the invention has for its object to provide a method and a test arrangement for determining the carrying behavior of displacement piles made of concrete with a displacer, with which the bearing behavior of these displacement piles can be determined particularly quickly and economically.
- the method according to the invention is characterized that the displacer head into the ground by means of a metallic Stakes is introduced, which together with the Displacer forms the test pile.
- the invention is based on the finding that positive displacement piles with a so-called lost displacer the Trag decisively determined by the displacer becomes.
- the displacer head becomes instantaneous introduced through a pile strand in the ground, which together forms the test pile with the displacer head.
- the pile strand is so in its diameter and in its length to the actually provided displacement pile from the hardened Suspension, in particular concrete, adjusted.
- the displacer head Can be made of metal, concrete or another suitable Material exist.
- test load immediately after the Inserting the pile strand with the displacer head into the ground respectively. This saves time and money.
- a particularly accurate determination of the Trag s be achieved by that of the measuring equipment determined values for the metallic test pile by means of a correction factor according to the properties the displacement piles converted from the hardened suspension become.
- a Lastverteilkopf is arranged, which the Test load transfers to the pile string.
- the pile string At its top End of the pile strand may have a connecting device, with which the load head or a press device can be easily attached.
- a preferred development for this is that at least two anchor elements around the test pile around in the ground are introduced and that the Lastverteilkopf with the anchor elements connected to the power dissipation.
- the anchor elements can be in particular screw anchors, which in the necessary Number at a certain angle to the test pile in be screwed in the floor. The load distribution head will then clamped with the screw anchors, giving a compressive force the test stake can be exercised.
- a press device is arranged, through which the test load is produced.
- the press can in particular be a hydraulic pressure cylinder which, when moving apart between the Lastverteilkopf and the test pile the desired Compressive force generated.
- the displacer head remains in the ground and when removing the pile strand, the hardenable suspension is initiated.
- the pile strand is detachable with the Displacer coupled, such as by a thread.
- the test stake can in the test in a simple manner in be converted to a building carrying displacement.
- the test pile can be placed directly at the location of a carrying pile.
- the test pole with the metallic Pile string immediately remains in the ground and together with the other to be created displacement piles of concrete the Building carries.
- the pile strand is a cylindrical element, in particular a pipe is the outer surface for increasing a Friction factor is changed with the soil.
- a Friction factor can be roughened or with the outer surface of the pile strand Profile elements, be provided about helical.
- the friction factor can be an empirical friction factor between be adapted to a concrete pile and the ground.
- the invention further relates to a test arrangement for Determining the bearing behavior of a displacement pile with a Displacement head, comprising a loading device for Apply a test load.
- the test arrangement according to the invention is characterized in that a metallic drill string is provided, at the lower end of a displacer and at the upper end of the loading device releasably secured is. With this test arrangement, in particular the before described method and the associated Benefits are achieved.
- the measuring device can in the Pile strand or integrated into the load device. Alternatively, a mobile measuring device can be connected separately become.
- the invention is based on a preferred embodiment further described, which is schematically in the drawing is shown.
- the only figure shows one schematic side view of a test arrangement for determining the structural behavior of displacement piles.
- a test pile was made 30 in the area shown with a ground area Displacer 32 driven, which the soil in the displaced surrounding soil area.
- the test pile 30 points beside the displacer 32, a metallic pile strand 34th on, which via a connecting device 36 releasably with the displacer 32 is connected.
- the test pile 30 corresponds in terms of its length and its diameter actual displacement piles made of concrete become.
- a load device 12 is placed on the test pile 30 with a load distribution head 14 and a hydraulic press device 18 arranged.
- the Lastverteilkopf with screwed laterally at a predetermined angle Anchor elements 16 coupled.
- the press device 18 is a predetermined test load on the test pile 30 exercised.
- the Trag in particular the setting of the test pile 30, measured.
- the settlement behavior of the test pile 30 with the metallic pile strand with surprisingly high accuracy the settlement behavior of a Concrete displacement pile.
- the friction value of the metallic pile string 34 to a concrete column can, for example, formed as helical profile elements 38 may be formed along the pile string 34.
- the tubular pile strand 34 from the displacer head 32 approximately by opposite rotation be released and withdrawn from the Bohr.
- the resulting cavity with a hardenable suspension, in particular concrete are filled.
- the metallic test pile can be easily inserted into a concrete pile to be reworked, which then to the building foundation can be used.
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Piles And Underground Anchors (AREA)
Abstract
Description
Claims (9)
- Verfahren zum Bestimmen des Tragverhaltens von Verdrängungspfählen, welche durch Einbringen eines Bohrloches mittels eines Verdrängerkopfes (32) und anschließendes Verfüllen des Bohrloches mit einer aushärtbaren Suspension unter Belassung des Verdrängerkopfes (32) im Bohrloch hergestellt werden, wobei ein Testpfahl (30) erstellt und mittels einer Belastungseinrichtung (12) mit einer Prüfbelastung beaufschlagt wird und mittels einer Messeinrichtung das Tragverhalten gemessen wird,
dadurch gekennzeichnet, dass der Verdrängerkopf (32) in den Boden mittels eines metallischen Pfahlstranges (34) eingebracht wird, welcher zusammen mit dem Verdrängerkopf (32) den Testpfahl (30) bildet. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die von der Messeinrichtung ermittelten Werte zu dem Testpfahl (30) mit dem metallischen Pfahlstrang (34) mittels eines Korrekturfaktors entsprechend den Eigenschaften der Verdrängungspfähle aus der erhärteten Suspension umgerechnet werden. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass am oberen Ende des metallischen Pfahlstranges (34) ein Lastverteilkopf (14) angeordnet wird, welcher die Prüfbelastung auf den Pfahlstrang (34) überträgt. - Verfahren nach Anspruch 3,
dadurch gekennzeichnet, dass mindestens zwei Ankerelemente (16) um den Testpfahl (30) herum in den Boden eingebracht werden und
dass der Lastverteilkopf (14) mit den Ankerelementen (16) zur Kraftableitung verbunden wird. - Verfahren nach Anspruch 3 oder 4,
dadurch gekennzeichnet dass zwischen dem Pfahlstrang (34) und dem Lastverteilkopf (14) eine Presseneinrichtung (18) angeordnet wird, durch welche die Prüfbelastung erzeugt wird. - Verfahren nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet, dass nach der Messung der Pfahlstrang (34) mit oder ohne dem Verdrängerkopf (32) aus dem Boden entfernt wird. - Verfahren nach einem der Ansprüche 1 bis 6,
dadurch gekennzeichnet, dass der Verdrängerkopf (32) im Boden verbleibt und beim Entfernen des Pfahlstranges (34) die aushärtbare Suspension eingeleitet wird. - Verfahren nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet, dass der Pfahlsträng (34) ein zylindrisches Element, insbesondere ein Rohr ist, dessen Außenfläche zur Erhöhung eines Reibungsfaktors mit dem Boden verändert wird. - Prüfanordnung zum Bestimmen des Tragverhaltens von Verdrängungspfählen mit Verdrängerkopf (32), insbesondere zum Durchführen eines Verfahrens nach einem der Ansprüche 1 bis 8, mit einer Belastungseinrichtung (12) zum Aufbringen einer Prüflast,
dadurch gekennzeichnet, dass ein metallischer Pfahlstrang (34) vorgesehen ist, an dessen unterem Ende der Verdrängerkopf (34) und an dessen oberem Ende die Belastungseinrichtung (12) lösbar befestigt ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10346040 | 2003-10-02 | ||
DE10346040A DE10346040A1 (de) | 2003-10-02 | 2003-10-02 | Verfahren und Prüfanordnung zum Bestimmen des Tragverhaltens von Verdrängungspfählen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1520938A2 true EP1520938A2 (de) | 2005-04-06 |
EP1520938A3 EP1520938A3 (de) | 2006-03-08 |
Family
ID=34306243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04019985A Withdrawn EP1520938A3 (de) | 2003-10-02 | 2004-08-23 | Verfahren und Prüfanordnung zum Bestimmen des Tragverhaltens von Verdrängungspfählen |
Country Status (4)
Country | Link |
---|---|
US (1) | US7175368B2 (de) |
EP (1) | EP1520938A3 (de) |
CN (1) | CN1303290C (de) |
DE (1) | DE10346040A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2000160C2 (nl) * | 2006-07-25 | 2008-01-28 | Geodynamic | Werkwijze voor het controleren van de draagkracht van een paal. |
EP3569770A3 (de) * | 2018-04-25 | 2020-02-26 | Krinner Innovation GmbH | Verfahren zur belastungsprüfung von schraubfundamenten |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101311284A (zh) * | 2007-05-24 | 2008-11-26 | 鸿富锦精密工业(深圳)有限公司 | 镁合金及镁合金薄材 |
US20170073919A1 (en) * | 2008-11-21 | 2017-03-16 | Uretek Usa, Inc. | Measuring underground pressure |
CN102561410A (zh) * | 2010-12-17 | 2012-07-11 | 上海市电力公司 | 深层开挖条件下抗拔桩力学性能的测试方法 |
CN102134861B (zh) * | 2011-02-17 | 2012-05-30 | 苏州市建筑设计研究院有限责任公司 | 土体内预制桩试桩方法 |
US8402837B1 (en) | 2011-11-29 | 2013-03-26 | International Marketing & Research, Inc. | System for field testing helical piles |
US9645062B2 (en) * | 2014-04-11 | 2017-05-09 | Duro-Last, Inc. | Roofing pull-test frame assembly |
CN104060637B (zh) * | 2014-04-14 | 2015-12-02 | 中国矿业大学 | 一种碎石桩加固软土路基的土工离心模拟试验方法 |
US9360397B1 (en) * | 2014-07-02 | 2016-06-07 | William H Melton | Anchor inspection device |
CN105862941A (zh) * | 2016-05-24 | 2016-08-17 | 武汉科技大学 | 一种现场测定桩基承载力时间效应的模型装置及方法 |
CN105971033B (zh) * | 2016-06-17 | 2017-12-05 | 侯伯贵 | 地基基础管桩试压检测配重的组合水箱和试压检测方法 |
CN106759552B (zh) * | 2017-01-24 | 2018-12-18 | 重庆大学 | 一种模拟钙质砂地基打桩过程颗粒破碎试验模型装置及其试验方法 |
CN114894624B (zh) * | 2022-07-14 | 2022-11-01 | 浙大城市学院 | 基于海洋管线群锚作用的拉拔力测量试验装置及测量方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1215417A (en) | 1968-04-24 | 1970-12-09 | Stichting Waterbouwkundig Lab | An apparatus for determining the bearing capacity of the soil |
GB2218722A (en) | 1988-05-19 | 1989-11-22 | Basil Green | Pile pressing |
DE4005032A1 (de) | 1990-02-19 | 1991-08-22 | Bauer Spezialtiefbau | Vorrichtung und verfahren zum aufbringen einer kraft zwischen einer bodenplatte und einem gruendungselement |
GB2346917A (en) | 1998-12-22 | 2000-08-23 | Robert Tjhing Bo Oei | Piling system with continuous load measurement |
GB2388624A (en) | 2002-05-16 | 2003-11-19 | Roxbury Ltd | Pile former with sacrificial tip |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IL42798A (en) * | 1973-07-20 | 1975-11-25 | Tech Res & Dev Found Ltd | A test rig for load testing of foundations |
US4081992A (en) * | 1976-11-22 | 1978-04-04 | Farmer Foundation Company, Inc. | Apparatus for load testing foundation shafts |
US5282701A (en) * | 1990-07-10 | 1994-02-01 | Samsung Construction Co., Ltd. | Method and apparatus for a loading test of a pile using a self-repulsive force |
US5234290A (en) * | 1991-11-04 | 1993-08-10 | Rodney B. Stewart | Prestressed caisson bearing pier and structural foundation device |
CN2119443U (zh) * | 1992-03-12 | 1992-10-21 | 刘小清 | 液体配重式静荷载试验装置 |
DE4228580C1 (de) * | 1992-09-01 | 1993-10-28 | Strabag Bau Ag | Erdbohrer zum Herstellen eines Ortbeton-Verdrängungspfahles |
US6363776B1 (en) * | 1999-11-12 | 2002-04-02 | Gary L. Reinert, Sr. | Pile testing reaction anchor apparatus and method |
GB0028645D0 (en) * | 2000-11-24 | 2001-01-10 | Univ Cranfield | A handheld measurement device for the determination of racecourse going |
JP4047604B2 (ja) * | 2002-03-15 | 2008-02-13 | 鉱研工業株式会社 | 杭耐力測定装置 |
CN1161593C (zh) * | 2002-07-19 | 2004-08-11 | 张百全 | 测试桩基轴向承载力的自锚荷载法 |
-
2003
- 2003-10-02 DE DE10346040A patent/DE10346040A1/de not_active Withdrawn
-
2004
- 2004-08-23 EP EP04019985A patent/EP1520938A3/de not_active Withdrawn
- 2004-09-23 US US10/947,198 patent/US7175368B2/en not_active Expired - Fee Related
- 2004-09-30 CN CNB2004100852173A patent/CN1303290C/zh not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1215417A (en) | 1968-04-24 | 1970-12-09 | Stichting Waterbouwkundig Lab | An apparatus for determining the bearing capacity of the soil |
GB2218722A (en) | 1988-05-19 | 1989-11-22 | Basil Green | Pile pressing |
DE4005032A1 (de) | 1990-02-19 | 1991-08-22 | Bauer Spezialtiefbau | Vorrichtung und verfahren zum aufbringen einer kraft zwischen einer bodenplatte und einem gruendungselement |
GB2346917A (en) | 1998-12-22 | 2000-08-23 | Robert Tjhing Bo Oei | Piling system with continuous load measurement |
GB2388624A (en) | 2002-05-16 | 2003-11-19 | Roxbury Ltd | Pile former with sacrificial tip |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL2000160C2 (nl) * | 2006-07-25 | 2008-01-28 | Geodynamic | Werkwijze voor het controleren van de draagkracht van een paal. |
EP3569770A3 (de) * | 2018-04-25 | 2020-02-26 | Krinner Innovation GmbH | Verfahren zur belastungsprüfung von schraubfundamenten |
Also Published As
Publication number | Publication date |
---|---|
EP1520938A3 (de) | 2006-03-08 |
DE10346040A1 (de) | 2005-05-25 |
US7175368B2 (en) | 2007-02-13 |
CN1303290C (zh) | 2007-03-07 |
CN1603527A (zh) | 2005-04-06 |
US20050074297A1 (en) | 2005-04-07 |
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