SE501607C2 - Procedure for casting piles - Google Patents
Procedure for casting pilesInfo
- Publication number
- SE501607C2 SE501607C2 SE9301035A SE9301035A SE501607C2 SE 501607 C2 SE501607 C2 SE 501607C2 SE 9301035 A SE9301035 A SE 9301035A SE 9301035 A SE9301035 A SE 9301035A SE 501607 C2 SE501607 C2 SE 501607C2
- Authority
- SE
- Sweden
- Prior art keywords
- concrete
- expansion
- expanded
- expander body
- hole
- 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
- E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
-
- 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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
- E02D5/44—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds with enlarged footing or enlargements at the bottom of the pile
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)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
Description
501 eo? 2 När expanderkroppen lö och armeringskorgen 21 kommit pa plats lämnas palen orörd till dess att betongen stelnat, men inte hunnit fa alltför hög hàllfasthet. Man lämnar den exempelvis någon eller nâgra timmar och upp till 1 dygn..Därefter expanderar man expanderkroppen lö genom att injektera den med cementbruk som kan vara gjort pà ren cement eller cement med en tillsats av fin sand. Man använder en injekteringspump som kan ge ett tryck av 100 bar (10 megapascal). Lämpligen bör betongen i hålet 17 inte ha härdat mer än att den intill expanderkroppen 18 äter blir plastisk under kroppens expansion. Den maste dock vara så härd att betongpelaren inte påverkas annat än intill kroppen och inte trycks upp ur hålet 17. Lämlig härdningstid finner man lätt empiriskt och den kan styras genom tillsatser till betongen. 501 eo? 2 When the expander body has settled and the reinforcement basket 21 has arrived in place, the pile is left untouched until the concrete has solidified, but has not had time to obtain too high a strength. You leave it, for example, for a few hours and up to 1 day. Then you expand the expander body loose by injecting it with cement mortar that can be made of pure cement or cement with the addition of fine sand. An injection pump is used which can give a pressure of 100 bar (10 megapascals). Suitably, the concrete in the hole 17 should not have hardened more than that which it eats next to the expander body 18 becomes plastic during the expansion of the body. However, it must be so hardened that the concrete pillar is not affected other than next to the body and is not pushed up out of the hole 17. Suitable hardening time is easily found empirically and it can be controlled by additions to the concrete.
Expanderkroppen 18 drar ihop sig axiellt såsom framgår av Figurerna 4-6 när den expanderar radiellt. En expanderkropp som får slutdiametern 80 cm har ursprungligen ett kvadratiskt tvärsnitt ed sidan 12 cm och den drar ihop sig ungefär 30 cm. Totalt ger denna sammandragning upphov till en volymminskning pà 5 liter och om kroppens övre ände är fixerad kommer hela denna volymminskning pà 5 liter att lokaliseras till expanderkroppens botten. Denna volymminskning pa 5 liter ska emellertid sättas i relation till kroppens totala expansion som, om expanderkroppens ursprungslängd är 2,6 m, är i storleksordningen 1000 liter. Jorden kring expanderkroppen 18 utsätts för expansionstrycket och expanderkroppen expanderar i direkt anslutning till det teoretiska halrummet pä 5 liter och trycket medför en omfördelning av betongen sa att det i stället för ett tomrum uppstår ett tryck under expansionskroppen som motsvarar ett vanligt injektionstryck.The expander body 18 contracts axially as shown in Figures 4-6 as it expands radially. An expander body having a final diameter of 80 cm originally has a square cross section on the side 12 cm and it contracts approximately 30 cm. In total, this contraction gives rise to a volume reduction of 5 liters and if the upper end of the body is fixed, this entire volume reduction of 5 liters will be located at the bottom of the expander body. However, this volume reduction of 5 liters must be set in relation to the total expansion of the body, which, if the original length of the expander body is 2.6 m, is in the order of 1000 liters. The soil around the expander body 18 is subjected to the expansion pressure and the expander body expands in direct connection with the theoretical cavity of 5 liters and the pressure causes a redistribution of the concrete so that instead of a void there is a pressure below the expansion body corresponding to a normal injection pressure.
I vissa jordlager är det fördelaktigt att utföra en kraftigare underinjektering än den som erhàlles på detta sätt och man kan dä lämpligen ha en ventil i kroppens botten som medger att injekteringsmassa trycks ut under expansionskroppen i direkt anslutning till att expansionen avslutas. Denna ventil kan vara anordnad sa att man kan manövrera den manuellt genom en lina som sträcker sig upp genom tryckslangen 20. Alternativt kan den vara anordnad så att den öppnar automatiskt i beroende av expanderkroppens axiella sammandragning. 3 501 607 Även om man låter betongen hardna sa mycket innan expansionen att den spricker i stället för att bli plastisk under expansionen kan det vara en fördel att underinjektera. I vissa fall kan det vara fördlaktigt att utföra efterinjekteringen en tid efter det att expanderkroppen expanderats. Efterinjekteringen görs da lämligen med en separat slang som kan ga utvändigt om expanderkroppen.In some soil layers it is advantageous to carry out a stronger sub-injection than that obtained in this way and one can then suitably have a valve in the bottom of the body which allows grouting mass to be pressed out under the expansion body in direct connection with the expansion ending. This valve can be arranged so that it can be operated manually by a line extending up through the pressure hose 20. Alternatively, it can be arranged so that it opens automatically depending on the axial contraction of the expander body. 3 501 607 Even if the concrete is allowed to harden so much before the expansion that it cracks instead of becoming plastic during the expansion, it can be an advantage to under-inject. In some cases, it may be advisable to perform the post-injection some time after the expander body has been expanded. The post-injection is then conveniently done with a separate hose that can go outside the expander body.
I Figur 7 visas övre delen av expanderkroppen 18 innan den expanderats, röret 19, slangen 20 och armeringskorgen 21. Armeringskorgen 21 visas svetsad till röret 19 och fyra armeringsjärn 22 ur armeringskorgen sträcker sig framåt och är svetsade till mittre delen av expanderkroppen 18. Röret 19 utgöres av ett teleskoprör som har ett yttre rör 23 till vilket armeringskorgen 21 är svetsad och ett inre rör 24 som är svetsat till expanderkroppen 18 och dras ut ur det yttre röret 23 när expanderkroppen drar ihop sig axiellt. Expanderkroppens mittre del rör sig inte axiellt när expanderkroppen expanderar, men expansionen pressar ut och böjer armeringsjärnen 22 sa att de dras nedåt i storleksordningen 1-2 dm varför armeringskorgen bör vara avpassad att tillåta denna neddragning I det ovan beskrivna förfarandet trycks expansionskroppen 18 ned i betongen i hàlet 17. Alternativt kan man avpassa augerborren 13 sa att man kan föra ned expansionskroppen 18 genom borrens centralrör 14 innan man fyller hålet 17 med betong. Hålet kan göras pa annat sätt än med en augerborr och när man använder augerborr kan man ta upp borren innan man fyller halet med betong om Jorden tillater det. Da kan man sätta ner expanderkropen 18 och armeringskorgen 21 i ett tomt häl.Figure 7 shows the upper part of the expander body 18 before it is expanded, the tube 19, the hose 20 and the reinforcing basket 21. The reinforcing basket 21 is shown welded to the tube 19 and four reinforcing bars 22 from the reinforcing basket extend forward and are welded to the middle part of the expander body 18. The tube 19 consists of a telescopic tube having an outer tube 23 to which the reinforcing basket 21 is welded and an inner tube 24 which is welded to the expander body 18 and is pulled out of the outer tube 23 when the expander body contracts axially. The middle part of the expander body does not move axially when the expander body expands, but the expansion pushes out and bends the reinforcing bars 22 so that they are pulled down in the order of 1-2 dm, so the reinforcement basket should be adapted to allow this pull-down. in the hole 17. Alternatively, the auger drill 13 can be adapted so that the expansion body 18 can be lowered through the drill's central pipe 14 before filling the hole 17 with concrete. The hole can be made in another way than with an auger drill and when using an auger drill you can pick up the drill before filling the tail with concrete if the Earth allows it. Then you can put the expander body 18 and the reinforcement basket 21 in an empty heel.
Man kan använda sig av en expansionskropp med en ventil i botten för att kunna underinjektera även när man sätter expanderkroppar med stàlrörsskaft pa det sätt som beskrives i de ovan angivna referenserna.An expansion body with a valve at the bottom can be used to be able to sub-inject even when inserting expander bodies with steel pipe shafts in the manner described in the above references.
Claims (6)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9301035A SE501607C2 (en) | 1993-03-28 | 1993-03-28 | Procedure for casting piles |
AU64399/94A AU6439994A (en) | 1993-03-28 | 1994-03-28 | A method of making cast-in-situ piles |
PCT/SE1994/000282 WO1994023135A1 (en) | 1993-03-28 | 1994-03-28 | A method of making cast-in-situ piles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9301035A SE501607C2 (en) | 1993-03-28 | 1993-03-28 | Procedure for casting piles |
Publications (3)
Publication Number | Publication Date |
---|---|
SE9301035D0 SE9301035D0 (en) | 1993-03-28 |
SE9301035L SE9301035L (en) | 1994-09-29 |
SE501607C2 true SE501607C2 (en) | 1995-03-27 |
Family
ID=20389395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE9301035A SE501607C2 (en) | 1993-03-28 | 1993-03-28 | Procedure for casting piles |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU6439994A (en) |
SE (1) | SE501607C2 (en) |
WO (1) | WO1994023135A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996032544A1 (en) * | 1995-04-11 | 1996-10-17 | Norman Torbjoern | Method and device for performing ground anchorage |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6354768B1 (en) * | 2000-01-24 | 2002-03-12 | Geotechnical Reinforcement Company, Inc. | Soil reinforcement method and apparatus |
WO2001096669A1 (en) | 2000-06-15 | 2001-12-20 | Geotechnical Reinforcement Company, Inc. | Lateral displacement pier and method of installing the same |
US9169611B2 (en) | 2000-06-15 | 2015-10-27 | Geopier Foundation Company, Inc. | Method and apparatus for building support piers from one or more successive lifts formed in a soil matrix |
US7226246B2 (en) | 2000-06-15 | 2007-06-05 | Geotechnical Reinforcement, Inc. | Apparatus and method for building support piers from one or successive lifts formed in a soil matrix |
SE0202501L (en) * | 2002-08-23 | 2004-02-24 | Soilex Ab | Ways to make a pole and / or a tie rod |
RU2005121268A (en) | 2002-12-06 | 2006-01-20 | Джиотекникал Рейнфорсмент, Инк. (Us) | METHOD FOR CONSTRUCTION OF SUPPORTS IN SOIL AND STRUCTURE OF SUPPORT |
JP2008511772A (en) * | 2004-08-30 | 2008-04-17 | フット ファウンデーション エー/エス | How to install pile foundations for rubber balloons for structures, pile foundations and enlarged bottom panels |
US20120042605A1 (en) * | 2010-08-17 | 2012-02-23 | Turner Michael L | Removable Support Cage For Top Of Drilled Pier |
CN102747738A (en) * | 2012-07-25 | 2012-10-24 | 中国水电顾问集团西北勘测设计研究院 | Method for adopting high-pressure grouting steel pipe pile to perform covering layer side slope treatment |
RU2611099C1 (en) * | 2015-12-15 | 2017-02-21 | Михаил Анатольевич Чирва | Method for fixing walls of drilled shaft enlargement in unstable soils |
CN105714773B (en) * | 2016-03-01 | 2017-11-28 | 江苏东合南岩土科技股份有限公司 | A kind of method for processing foundation |
RU2645015C2 (en) * | 2016-07-13 | 2018-02-15 | Государственное автономное образовательное учреждение Астраханской области высшего образования Астраханский Государственный Архитектурно-Строительный Университет | Method of creating the general broadening for the pile group |
CN114482021B (en) * | 2021-09-26 | 2023-12-29 | 南水北调东线江苏水源有限责任公司 | Method for solidifying preset reverse friction combined pile foundation soil and formed cast-in-place pile |
CN114319383B (en) * | 2022-01-12 | 2023-04-14 | 宁波大学 | Umbrella-shaped anchor rod utilizing swelling characteristic of bentonite and construction method |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3375670A (en) * | 1965-11-26 | 1968-04-02 | Serota Stanley | Method of piling |
SE436781B (en) * | 1981-11-16 | 1985-01-21 | Atlas Copco Ab | SVELLKROPP |
GB2157750B (en) * | 1984-04-19 | 1988-01-27 | Juei Jse Lin | Improvements relating to cast-in-situ concrete pile construction |
-
1993
- 1993-03-28 SE SE9301035A patent/SE501607C2/en unknown
-
1994
- 1994-03-28 WO PCT/SE1994/000282 patent/WO1994023135A1/en active Application Filing
- 1994-03-28 AU AU64399/94A patent/AU6439994A/en not_active Abandoned
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996032544A1 (en) * | 1995-04-11 | 1996-10-17 | Norman Torbjoern | Method and device for performing ground anchorage |
US5992103A (en) * | 1995-04-11 | 1999-11-30 | Norman; Torbjorn | Method and device for performing ground anchorage |
Also Published As
Publication number | Publication date |
---|---|
AU6439994A (en) | 1994-10-24 |
SE9301035D0 (en) | 1993-03-28 |
SE9301035L (en) | 1994-09-29 |
WO1994023135A1 (en) | 1994-10-13 |
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