NL194046C - Foundation pole. - Google Patents

Description

1 194046

Foundation pole.

The invention relates to a foundation pile with an adhesive part! that is provided with transverse ribs and transverse floors. It is preferably a prestressed foundation pile.

5 Such a foundation pile is known from the article in the magazine 'Foundation Technology', entitled 'Storm surge barriers in the Nieuwe Waterweg, in the Hartel Canal and their foundations', second volume no. 2, October 1993, pages 83 to 94, (in especially page 91). This known foundation pile has an adhesive part with notches on its four sides, which produce a ribbed profile.

At the notches, however, the cross-sectional area of the foundation pile is less than its nominal cross-sectional area, which adversely affects the maximum allowable tensile or compressive stresses in the pile. For a tensioned pile this means a reduction of its maximum allowable tensile load.

The object of the invention is to provide a foundation pile of the type described above which does not have this drawback. This is achieved according to the invention in that 15 - each cross-section through the bonding part of the pile extends through at least one transverse rib and at least one transverse recess, and that - the transverse ribs and the transverse recesses are arranged such that the area of each cross-section of the foundation pile is approximately is equal.

The consequence of the constant cross section is that an essentially equal pre-tension can be realized in the entire foundation pile, which yields a high permissible tensile force.

According to a pre-selection, provision is made for the centers of gravity of all cross-sections to be on one and the same straight.

In such an embodiment, the neutral line of the pile is perfectly straight, which is favorable for an even internal stress distribution in the pile.

25

The invention will be explained in more detail below with reference to a number of exemplary embodiments shown in the figures.

Figure 1 shows a perspective view of a first embodiment of the foundation pile according to the invention.

Figure 2 shows a section according to IMI of figure 1.

Figure 3 shows a second version of the foundation pile.

Figure 4 shows a cross section according to IV-IV.

Figures 5a and 5b in a third and fourth embodiment.

Figures 6a and 6b show a fifth and sixth embodiment, respectively

Figures 7a through 7e show further embodiments.

Figures 8a through 8e also show further embodiments.

Figures 9a through 9c show hexagonal designs.

Figures 10a to 10d show partial side views of foundation pile variants in which several rows of teeth are applied on one plane. The foundation pile shown in figure 1 has four side surfaces in the usual manner, the surfaces of which 1 and 2 can be seen. In figure 2 both the side surfaces 1 and 2 and the side surfaces 3 and 4 are indicated.

Surface 1 has three in their entirety with 5 indicated, protruding ribs. Three correspondingly shaped floors 6 are provided on plane 2.

As shown in figure 2, surface 3 is also provided with such ribs 5, while surface 4 also has 45 floors 6.

When the depth of each recess 6 relative to its associated plane 2 or 4, and the height of each rib 5 relative to its associated plane 1 or 3 are chosen equal, and if they have the same shape, each cross section of the foundation pile is even big. This means that with loads on the pile the same surface is available in all cross sections for carrying the load. At 50 prestressed piles this means that the pretension in each cross section will be approximately the same size.

The second embodiment of the foundation pile according to figures 3 and 4 has three ribs 9 on two opposite surfaces 7 and 8, while three other floors 12 are provided on the other two opposite surfaces 10 and 11.

In this embodiment too, the cross-sections of the foundation pile are all equal if the height of each rib 9 is equal to the depth of each recess 12, and the shape of these recesses and recesses is the same.

Claims (8)

194046 2 As shown in figure 4, the center of gravity of all cross-sections lies exactly on the neutral line 13 of the foundation pile. This means that not only are all cross-sectional areas of the pile equal to each other, but are also very uniformly loaded, given that course of the neutral line 13. As a result, a very even voltage distribution over all surfaces is ensured. Figures 1 to 4 concern only two of the many possible different embodiments that a foundation pile according to the invention can have. In Figures 1 to 4, for example, prismatic recesses and ribs are provided. However, it is also conceivable to design the storeys and elevations in the form of storeys and elevations arranged one next to the other, as can be seen from the exemplary embodiments of Figures 5 to 10. For example, in Figs. 5a and 5b, a pole with triangular cross section is shown, each side face having a first series of recesses and elevations 14, and a second series of recesses and elevations 15 offset by half a stitch length. a cross-section of the foundation pile, a storey 16 is adjacent to an elevation 17. In the exemplary embodiment of figure 5b, three series of floors and 15 elevations 18, 19 and 20 are provided on one side surface. The exemplary embodiments of Figs. 6a and 6b show a post with a rectangular cross section, on two opposite surfaces provided with two series of floors and elevations 21 and 22. The embodiments of Figs. 7a and b show a post with square section, wherein one Two rows 23, 24 with recesses and elevations are provided in each side plane. Figures 7c through 7e show embodiments of a square section pile in which three series of floors and elevations 25, 26 and 27 are provided. Figures 8a to 8e again show a foundation pile with square threshing section, figure 8a being a variant with series of floors and elevations 28, 29 on one side surface, the dimensions of which differ. The embodiments of Figures 8b and 8c again show a foundation pile with a square cross-section, the elevations and recesses of the two series 30 and 31 having a tapering cross-section. The same is the case with the exemplary embodiments of Figures 8d and 8e, in which three series 32, 33, 34 are each provided with elevations and recesses. Even with a foundation pile with five-sided and six-sided cross-section, series of elevations and recesses 35, 36 can each be provided on one plane; see figures 9a and 9b, respectively. The embodiment of figure 9c shows a variant for a foundation pile with a hexagonal section, in which only one series of elevations and recesses 35 or 36 is provided on each side. The views of Figures 10a through 10d show that the different series of elevations and floors 37, 38 and 39 may be composed of elevations and floors the length of which decreases from top to bottom along the pole (series 37 and 39) or increases (series 38). In Figure 10b, series 40, 42 just increases in that direction, and series 41 decreases. Figures 10c and 10d show that the course according to Figures 10a and 10b can also be summarized in one side plane. 45 Foundation pile with an adhesion part provided with transverse ribs and transverse recesses, characterized in that: - each cross section through the attachment part of the post extends through at least one transverse rib and at least one transverse recess, and that 50. the transverse ribs and the transverse recesses are such provided that the area of each cross-section of the foundation pile is approximately equal. A foundation pile according to claim 1, characterized in that the centers of gravity of all cross-sections on 3 194046 are one and the same straight. UV-light-curing lacquer is applied. 5. Combination of a printing plate and a cylindrical carrier, obtained by a method according to claim 3 or 4. In this drawing 6 sheets