DE817123C - Reinforcement cage for in-situ concrete piles with a thickened base - Google Patents
Reinforcement cage for in-situ concrete piles with a thickened baseInfo
- Publication number
- DE817123C DE817123C DEW1707A DEW0001707A DE817123C DE 817123 C DE817123 C DE 817123C DE W1707 A DEW1707 A DE W1707A DE W0001707 A DEW0001707 A DE W0001707A DE 817123 C DE817123 C DE 817123C
- Authority
- DE
- Germany
- Prior art keywords
- reinforcement cage
- situ concrete
- concrete piles
- borehole
- thickened base
- 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.)
- Expired
Links
- 230000002787 reinforcement Effects 0.000 title claims description 13
- 238000011065 in-situ storage Methods 0.000 title claims 2
- 239000000725 suspension Substances 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000004804 winding Methods 0.000 claims 1
- 239000002184 metal Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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
- E02D5/34—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
- E02D5/445—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 by application of pyrotechniques
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)
- Ropes Or Cables (AREA)
Description
Die Erfindung betrifft ein= Bewehrungskorb für Ortpfähle aus Beton mit verdicktem Fuß. Werden Pfähle dieser Art auf Zug beansprucht, so kann es vorkommen, daß der Beton am Fuß abreißt. Die Erfindung bezweckt, diese Möglichkeit auszuschalten. Dieser Zweck wird der Erfindung gemäß in erster Linie dadurch erreicht, daß die Längsstäbe des Bewehrungskorbs an ihren unteren Enden nicht umschnürt sind und diese freien Enden nach außen abgebogen sind, so daß sie sich nach dem Einführen des Bewehrungskorbs in das Bohrrohr in dem erweiterten Teil des Bohrlochs federnd nach außen biegen.The invention relates to a = reinforcement cage for site posts made of concrete with a thickened foot. If piles of this type are subjected to tension, it can happen that the concrete tears off at the foot. The invention aims to eliminate this possibility. This purpose is achieved according to the invention primarily in that the Longitudinal bars of the reinforcement cage are not tied at their lower ends and these free ends are bent outwards so that they are after the introduction of the reinforcement cage resiliently bend outward into the drill pipe in the enlarged portion of the borehole.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung in einem Längsschnitt veranschaulicht. Das Bohrloch i für den Betonpfahl, in das beim Bohren ein Metallrohr 3 mit eingezogen wird, ist in seinem unteren Ende 2 ausgeweitet. In das Rohr 3 werden die Längsbewehrungsstäbe 4 eingeführt, die durch einen schraubenförmig um sie herumgeführten und mit ihnen punktverschweißten Draht io zu einem korbartigen Gebilde zusammengefaßt sind. An den unteren Enden 4- sind die Längsstäbe 4 nicht umschnürt und diese freien Enden nach außen federnd abgebogen.In the drawing, an embodiment of the invention is in one Illustrated longitudinal section. The borehole i for the concrete pile into which when drilling a metal pipe 3 is drawn in with it is widened at its lower end 2. In the pipe 3, the longitudinal reinforcing bars 4 are introduced, which is screwed by a around them and spot-welded wire io to form a basket-like Formations are summarized. At the lower ends 4- the longitudinal bars 4 are not laced around and these free ends bent outwards resiliently.
Die Federung kann noch dadurch verbessert werden, daß man am Anfang des federnden Teils der Metallstäbe 4 eine spiralförmige Windung g vorsieht (s. den auf der Zeichnung links befindlichen Stab). Im allgemeinen kann man den Bewehrungskorb nach Zusammenpressen der federnden Enden ohne besondere Hilfsmittel in das Rohr 3 einbringen, da die auftretende Reibung zwischen dem Rohr 3 und den Stabenden 4a meistens nicht so groß ist, daß sie nicht überwunden werden könnte. Das Einbringen kann aber dadurch erleichtert werden, daß die Stabenden vor dem Einbringen durch einen leicht entzündbaren Strick 6, der mit einer langen Zündschnur 7 verbunden ist, so weit zusammengehalten werden, daß sie über den Umfang des Bewehrungskorbs nicht hinausragen.The suspension can be improved by getting started of the resilient part of the metal rods 4 provides a spiral turn g (see FIG. the stick on the left in the drawing). In general you can use the reinforcement cage after pressing the resilient ends together into the tube without special tools 3 bring in, since the friction occurring between the tube 3 and the rod ends 4a is usually not so great that it cannot be overcome. Bringing in but can be facilitated by the fact that the rod ends through before introduction an easily flammable cord 6 connected to a long detonating cord 7 is to be held together so far that they over the circumference of the reinforcement cage not protrude.
Nach dem Einbringen des Bewehrungskorbs in das Rohr wird die Zündschnur 7 entzündet; der Strick 6 brennt dann durch, so daß die Stabenden 4a frei werden. Sie federn infolgedessen nach außen und nehmen die in der Zeichnung gestrichelte Lage ein, so daß sie bei Beanspruchung des Pfahls auf Zug nach oben ein Abreißen vom Fuß verhindern.After inserting the reinforcement cage into the pipe, the fuse 7 ignited; the rope 6 then burns through, so that the rod ends 4a are free. As a result, they spring outward and take the one dashed in the drawing Position one so that it tears off when the post is subjected to upward tension prevent from foot.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW1707A DE817123C (en) | 1950-04-19 | 1950-04-19 | Reinforcement cage for in-situ concrete piles with a thickened base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW1707A DE817123C (en) | 1950-04-19 | 1950-04-19 | Reinforcement cage for in-situ concrete piles with a thickened base |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE817123C true DE817123C (en) | 1951-10-15 |
Family
ID=7591331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEW1707A Expired DE817123C (en) | 1950-04-19 | 1950-04-19 | Reinforcement cage for in-situ concrete piles with a thickened base |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE817123C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1097373B (en) * | 1954-06-16 | 1961-01-12 | Pierre Jean Marie Theodore All | Device and method for producing foundation stakes or the like. |
-
1950
- 1950-04-19 DE DEW1707A patent/DE817123C/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1097373B (en) * | 1954-06-16 | 1961-01-12 | Pierre Jean Marie Theodore All | Device and method for producing foundation stakes or the like. |
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