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EP-4741576-A1 - PILE FOUNDATION ELEMENT

EP4741576A1EP 4741576 A1EP4741576 A1EP 4741576A1EP-4741576-A1

Abstract

Pile foundation element (1), comprising: - a steel frame (2) to which an object (3) to be founded can be connected - at least one pile (4) which is connected to the steel frame (2) via a screw connection (6) secured by at least one nut (5), so that forces acting on the steel frame (2) can be transferred to the ground (10) through the screw connection (6) and the at least one pile (4). pile foundation with such a pile foundation element (1), arrangement with such a pile foundation and an object to be founded (3) and method for producing such an arrangement.

Inventors

  • Venier, Manuel

Assignees

  • HTB Baugesellschaft m.b.H.

Dates

Publication Date
20260513
Application Date
20241106

Claims (15)

  1. Pile foundation element (1), comprising: - a steel frame (2) designed as a hollow body, with which an object (3) to be founded can be connected - at least one stake (4) which is arranged with one of its ends in the hollow body - a solidified filling mass connecting at least one post (4) to the steel frame (2) so that forces acting on the steel frame (2) can be dissipated via the filling material onto the at least one pile (4) and via this into the subsoil (10).
  2. Pile foundation element according to the preceding claim, wherein the filling material completely fills the hollow body.
  3. Pile foundation element according to one of the two preceding claims, wherein the filling material completely surrounds the at least one pile (4) within the hollow body.
  4. Pile foundation element according to at least one of the preceding claims, wherein the filling material consists of: - Shrinkage-compensated special mortar - High-strength epoxy resin - Binder suspension - Special concrete
  5. Pile foundation element according to at least one of the preceding claims, wherein a screw connection is provided which is located in the hollow body and surrounded by the filling material, which has at least one nut (5) and a thread (6) cooperating with it, which is arranged at least in an end region of the at least one pile (4).
  6. Pile foundation element according to the preceding claim, wherein the screw connection has two nuts (5) between which a pile plate (13) is arranged, wherein it is preferably provided that the pile plate (13) has at least one recess (14) for at least partial reception of one of the nuts (5).
  7. Pile foundation element according to at least one of the preceding claims, wherein the hollow body is covered on its upper side by a cover (8).
  8. Pile foundation element according to at least one of the preceding claims, wherein at least outside the steel frame (2) a buckling protection tube (9) enclosing the at least one pile (4) extends.
  9. Pile foundation element according to at least one of the preceding claims, wherein a cover is provided at the end of the at least one pile (4) which is adjacent to the steel frame (2), which is preferably provided with a corrosion protection compound.
  10. Pile foundation element according to at least one of the preceding claims, wherein the steel frame (2) is formed in one piece.
  11. Pile foundation element according to at least one of the preceding claims, wherein the steel frame (2) has at least one filling opening (11) for the filling material and/or at least one venting opening (12).
  12. Pile foundation with a base body (7) on which an object (3) to be founded can be placed and on which at least two pile foundation elements (1) are arranged according to at least one of the preceding claims.
  13. Pile foundation according to the preceding claim, wherein the at least two pile foundation elements (1) are either integrally formed with the base body (7) are formed or connected to the base body (7), preferably welded.
  14. Arrangement with a pile foundation according to one of the two preceding claims, wherein the base body (7) is connected to an object (3) to be founded in the form of a support, in particular a lift support, or a mast, in particular a high-voltage mast, overhead line mast for railway lines or a mobile phone mast, and the base body (7) is anchored to the subsoil (10) by the at least two pile foundation elements (1).
  15. Method for manufacturing an arrangement according to the preceding claim using at least one pile foundation according to claim 12, comprising at least the following steps: - Providing a base body (7) of at least one pile foundation according to claim 12, wherein the base body (7) comprises a number of steel frames (2) - Arrangement of the base body (7) on or in the subsoil - Drilling the piles (4) through the respective steel frames (2) into the subsoil (10) - Pouring the filler material in a flowable state into the hollow bodies of the steel frames (2) so that, in the solidified state, the filler material connects at least one pile (4) to the steel frame (2). - after the filling mass has solidified, connecting an object (3) to be founded with the at least one base body (7) to produce the arrangement according to the preceding claim.

Description

The disclosure relates to a pile foundation element, a pile foundation with at least one such pile foundation element, an arrangement with such a pile foundation, and a method for grounding an object. According to current best practices, objects requiring foundations, such as masts and supports, are usually fixed to reinforced concrete foundations, and the associated loads are transferred through the reinforced concrete foundation into the surrounding subsoil. Excavation is always necessary for the construction of these foundations. On steep terrain, and depending on the slope, excavation work requires slope stabilization, which represents a significant intervention in the natural environment. Larger supports and masts necessitate extensive foundations for load transfer, requiring vast quantities of concrete and steel reinforcement. Since slope stabilization (e.g., shotcrete nail walls) and larger excavations can only be carried out using excavators, extensive construction roads and access routes are often required. As a variation of the common heavy-weight reinforced concrete foundations, reinforced concrete foundations with underlying piles are sometimes used. The typical structure of such a steel foundation with piles is as follows: The steel structure is screwed to the foundation using threaded rods embedded in concrete. Steel plates are screwed onto the lower end of the threaded rods, which direct the forces to the reinforcement. The reinforced concrete transfers the forces to the piles at the base of the foundation. The current state of the art has a number of disadvantages: additional load input due to the weight of the reinforcement and concrete onto the substrate Significant interventions in nature and large excavations are required. Excess soil that needs to be removed and disposed of or deposited on site. On soft subsoil, it is necessary to create an additional bearing surface, e.g. with a concrete leveling layer. significant time expenditure for the construction of the slope stabilization measures, the shotcrete nail walls and the reinforced concrete foundations higher construction costs for the construction of the slope stabilization measures, the shotcrete nail walls and the massive reinforced concrete foundations Significantly lower sustainability due to the use of concrete and cement Environmental factors (freeze/thaw cycles, UV exposure, etc.) cause the concrete to weather over the years. Reduced lifespan due to concrete aging, cracking, and reinforcement corrosion. Construction is only possible with heavy equipment (excavators, drilling rigs) - resulting in extensive damage to the surrounding area. The use of heavy equipment necessitates construction roads and access routes. Rigid and massive foundations create barriers to surface water runoff, resulting in concentrated water runoff that promotes soil erosion. Adverse impact of the massive slope stabilization and heavy foundations on nature and appearance. Subsequent dismantling of such reinforced concrete foundations after the end of their service life is hardly possible or only with great effort. It is a task to provide a pile foundation element, a pile foundation with at least one such pile foundation element, an arrangement with such a pile foundation and a method for foundationing an object, in which at least some of the above disadvantages, preferably all disadvantages, are at least reduced, preferably eliminated. This problem is solved by a pile foundation element with the features of claim 1, a pile foundation with at least one such pile foundation element, an arrangement with such a pile foundation and a method for foundationing an object with the features of claim 15. The pile foundation element comprises a steel frame, at least one pile, and fill material. The steel frame can be connected (possibly via further elements) to an object to be founded and is designed as a hollow body. At least one of the posts is positioned with one of its ends inside the hollow body. The filling material is poured into the hollow body in a flowable state and surrounds at least one pile at least partially and connects it to the steel frame, so that forces acting on the steel frame can be transferred via the solidified filling material to the at least one pile and via this into the subsoil. Therefore, no concrete is required outside the pile foundation element, thus avoiding the disadvantages of the prior art. A pile foundation has a base body to which an object to be founded can be connected and on which at least two pile foundation elements are arranged according to the present disclosure. It is possible to choose the geometry of the base body, the arrangement of the at least two pile foundation elements on the base body, and the number and orientation of the piles of the respective pile foundation elements depending on the object to be founded and the properties of the terrain in which the object is to be founded. An arrangement comprises a pile f