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Master's thesis-design of wind turbine foundation slab


master's thesis-design of wind turbine foundation slab

least 50 for other loads cases. In reality, the top slab takes a part of the forces, downloading the beams. Germanischer Lloyd Guideline for the Certification. The ordinary and fairly simple foundation method with a concrete slab with large area, may be abandoned since it can give too large differential settlement. To comply with the minimum dynamic rotational stiffness given by the manufacturer (to limit the potential coupling phenomena with the rotating parts of the WTG). Geotechnical design The geotechnical design has to consider several possible types of failure. Also, in this case, the concrete surface will be greater and therefore the soil pressures will be smaller. Structural design The reinforced concrete analysis is made with the Eurocode Concrete cover Exposure class: XC2 Structural class: S4 Cover of concrete poured directly over the soil: 75 mm Cover of concrete poured over a regularization concrete bed: 40.2.

38: Example of pecafil formwork Fig. This procedure has the advantage of allowing the reinforcement assembling of several foundations before starting the excavation. Moreover, the mounting procedure of the ick foundation is based in pre-assembling the reinforcement of beams and central ring for later introduction into previously excavated trenches. For the three cases above, the same foundation slab is used, but for case 2 and 3 the slab is cast on piles. 36: Soil pressure over the radial beams and central ring The unit frictional resistance is: Koh is the at rest soil pressure coefficient: o is the effective medium soil pressure over the lateral surface of beams and central ring: M-29 30 And Fig. The ick foundation allows selectively taking into consideration the skin friction resistance and adhesion between the soil and the radial beams and the soil. Buy the Full Version, you're Reading a Free Preview, page 53 is not shown in this preview. Not to slide (i.e. Buy the Full Version, you're Reading a Free Preview, pages 57 to 91 are not shown in this preview. Different analysis levels result verification.1. The ones that are verified in this memory are: Settlements calculation : soil pressure verification. 21: Loads applied to the model We have limited the maximum soil pressure on the beam end using a multi-linear spring with this hysteresis curve: Fig.


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