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Patent Searching and Data


Title:
COHESION PILE
Document Type and Number:
WIPO Patent Application WO/1991/004376
Kind Code:
A1
Abstract:
The present invention refers to a pile, in particular a cohesion pile comprising a driving means (11), a pile shoe (12) or the like and at least two elements, provided with force absorbing surfaces. The elements are constituted by flexible bands (13), which with one of its ends is attachable to the pile shoe (12). In the driven position of the pile the bands (13) are positioned substantially in parallel with the driving means.

Inventors:
ELLISON TOMMY (SE)
WALLIN THOMAS (SE)
Application Number:
PCT/SE1990/000598
Publication Date:
April 04, 1991
Filing Date:
September 19, 1990
Export Citation:
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Assignee:
BESAB (SE)
International Classes:
E02D5/28; E02D5/52; E02D5/54; E02D5/60; (IPC1-7): E02D5/24
Foreign References:
SE454785B1988-05-30
SE420219B1981-09-21
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Claims:
CLAIMS
1. A pile, in particular a cohesion pile comprising a dri¬ ving means, a pile shoe or the like and at least two ele ments, provided with force absorbing surfaces, c h a r a c t e r i z e d t h e r e i n, that the elements are constituted by flexible bands (13), which with one of its ends is attachable to the pile shoe (12) or the like and which bands in the driven position of the pile are positioned substantially in parallell with the driving means (11).
2. A pile according to claim 1, c h a r a c t e r i z e d t h e r e i n, that the bands are consituted by steel, plastic or fabric bands (13).
3. A pile according to claim 1 or 2, c h a r a c t e r i z e d t h e r e i n, that the driving means (11) is constituted by steel tubes, rails, steel beams, wooden piles or the like, preferable consisting of from smaller sections to a long unit joinable parts.
4. Pile according to one or some of previous claims, c h a r a c t e r i z e d t h e r e i n, that the elements (13) are connected to the pile shoe (12) orthe like by means of mechanical, welded, bolt, friktion joints or the like.
Description:
COHESION PILE

The present invention refers to a pile, in particular a cohesion pile comprising a driving means, a pile shoe or the like and at least two elements, provided with force absor¬ bing surfaces.

Background of the invention Cohesion piles of the above mentioned type are previously known and have been used in great extent with a very good result. A drawback with these cohesion piles is however that the manufacturing is relatively labour and cost demanding.

The object of the invention and most important features

The object of the present invention is to provide a pole, in particular a cohesion pile, with low manufacturing cost along with a very low weight without having an influence on the load absorbing capacity. The pile further should have a large envelope surface, give a small displaced earth volume, be joinable, easy to handle, adaptable with respect to element length and total length and corrosion-proof. Further the driving should be possible to carry out with simple light weight equipments. These objects have been accomplis¬ hed by the elements constituted by flexible bands, which one of its ends is attachable to the pile shoe or the like and which bands in the driven position of the pile are positio¬ ned substantially in parallell with the driving means.

Description of drawings

The invention will be described in closer detail with refe¬ rence to embodiments shown in accompanying drawings. Fig. 1 shows a frontal view of a pile according to the invention. Fig. 2 shows a lateral view of the pile according to fig. A

Fig. 3 shows a frontal view a pile according to a modified embodiment.

Fig. 4 shows a lateral wiew and partly in section the wedge of a pile according to a third embodiment.

Fig. 5 shows a lateral view of a device for feeding forward of the flexible bands in connetion with driving of the pile.

Fig. 6 is a view from the above corresponding to fig. 4.

Description of embodiments

The cohesion pile 10 according to the embodiments consists of a driving means, eg. a tube 11, a pile shoe 12 and a pair of flexible bands 13, which form the cohesion force absor¬ bing surfaces. The bands 13 at one of their ends are attac- hed to the pile shoe 12 by means of welded joints 14 (fig. 1), mechanical joints, eg. bolt joints 15 (fig. 3), friction joints (fig. 4) or the like while they for the rest are not connected to the tube 11 but in the driven position of the pile extend freely along the sides of the same substantially parallell to the tube 11. In fig. 4 the reference numeral 16 designates a holder-on and 17 a wedge, which clamps the band 13.

The bands can be constituted by steel, plastic or fabric bands, which during the driving of the tube is rolled off from band rolls 20, 21 (fig. 4 and 5) and are guided down into the ground in parallell with the tube 11. The bands are cut off in a suitable place and they will serve as suppor¬ ting means for the tube 11 and absorb tensile stress in this.

Instead of a tube 11 the driving means can be constituted by a rail, steel beam, concrete pile, wooden pile or the like. Preferably the driving means consists of smaller sections, which are joined together to a long unit in connection with the driving into the ground. In the figures such a joint is designated with 18.

Fig. 5 and 6 show a wagon 19 which carries a pair of band rolls 20, 21 for feeding of the bands 13, straightening rollers 22 and 23 as well as a cutting device for cutting the bands. The wagon 19 also contains holders for the dri¬ ving means, eg. the tube 11, and rollers 27 over which the bands 13 run at the driving of the pile. The bands 13 thus gradually will be roled off from the band rolls 20 and 21 when the tube sections are driven down into the ground, and are cut off when the desired driving depth has been reached. The wagon 19 is easily movable between the different the different driving locations.

The invention is of course not limited to the embodiments shown but several modifications are possible within the scope of the patent claims.