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Beam and pile anchor foundation for towers

A base and tower technology, applied in the field of improved base, can solve problems such as being susceptible to weather conditions and other site conditions, thermal cracking of concrete, adverse effects, etc., to eliminate the risk of thermal cracking, reduce waste, reduce The effect of erection time

Inactive Publication Date: 2018-04-17
RUTE FOUND SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rebar often exceeds 40 feet in length and therefore requires special oversized shipments which are expensive and often require special permits
The installation of rebar is a labor-intensive and time-consuming task that requires a large number of highly trained workers
[0005] Another obstacle to conventional foundations includes the fact that the construction process consists of on-site work that can be susceptible to weather conditions and other site conditions, and thus weather can adversely affect such mass-poured foundations of concrete
[0006] Another problem is thermal cracking of concrete due to overheating of concrete blocks during curing

Method used

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  • Beam and pile anchor foundation for towers
  • Beam and pile anchor foundation for towers
  • Beam and pile anchor foundation for towers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0078] Embodiment 1: A foundation system for a wind turbine, the foundation system comprising:

[0079] center hub assembly;

[0080] a plurality of prestressed inverted spherical tee concrete beams arranged in offset pairs, wherein each pair includes at least one post-tensioning cable inserted from the distal end of the first beam to the proximal end of the offset beam, and the cables pass through the central hub assembly; and

[0081] At least one anchor configured below leveled ground and mechanically coupled to at least one inverted ball-end T-beam.

Embodiment approach 2

[0082] Embodiment 2: The foundation system of Embodiment 1, wherein each inverted spherical tee concrete beam includes a top flange forming an upper surface and a bottom flange forming a bottom surface, and the bottom flange is larger than The top flange is wide, wherein, in use, the foundation system is arranged such that the bottom surface of the ball-joint T-beam bears on soil.

Embodiment approach 3

[0083] Embodiment 3: The foundation system of Embodiment 1, wherein each inverted ball-end concrete T-beam includes a plurality of post-tensioning cables, and the post-tensioning cables extend through the top projection rim and the bottom flange.

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PUM

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Abstract

A foundation system for a tower, such as a wind turbine, includes a central hub assembly, a plurality of post-tensioned concrete beams, and an anchoring system associated with each beam. In use, the foundation system is arranged so that the bottom surfaces of the concrete beams bear on soil and the anchoring system is disposed within the soil. The beams can be inverted bulb-T beams having post-tensioning cables inserted there-through and cooperating with an oppositely disposed related beam. The central hub assembly can include a plurality of stacked disk elements or steel frame elements that are post-tensioned together to form a single hub structure.

Description

technical field [0001] This technical disclosure relates to foundations for supporting columns and structures under heavy cyclic loading. More specifically, the present technical disclosure relates to improved foundations for supporting wind turbines. Background technique [0002] Conventional teaching of foundations and associated support structures for large wind turbines on land dictates cast-in-place large, thick, horizontal, high-strength poured concrete bases and vertical cast pedestals mounted above the bases. Such structures are known as gravity bases or extension bases. [0003] The amount of cast concrete used in conventional wind turbine erection is staggering. In the United States alone, the wind industry buries more than 8 billion pounds of concrete each year as the foundation structures (extended foundations) of approximately 4,000 wind turbines. That's equivalent to pouring about 2 million pounds of concrete for each wind turbine. Plus, once placed, this m...

Claims

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Application Information

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IPC IPC(8): E02D27/42E04H12/22
CPCY02E10/728E02D27/42E04H12/2238E04H12/2269F03D13/22Y02B10/30E02D27/425Y02E10/72E04B1/24E04B1/22E04B1/215E04H12/16E04B2001/2463
Inventor D·E·克劳斯B·威尔曼
Owner RUTE FOUND SYST INC
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