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The Reinforcement Methods Research Of Wind Turbine Generator System (WTGS) In Tianjin

Posted on:2016-11-28Degree:MasterType:Thesis
Country:ChinaCandidate:N Y SunFull Text:PDF
GTID:2272330467498747Subject:Geological Engineering
Abstract/Summary:PDF Full Text Request
According to the uncertainty of the direction about the wind load, the fan canwithstand repeated loads360odirection characteristics. The device dimensions are solarge that only the hub height reached80m. In accordance with the provisions of thenormal operation conditions, the base does not allow the existence of zero-stress areasof extreme conditions to allow zero-stress areas occupied area no larger than25%.Meanwhile, due to the special structural features fan, fan base is mainly exposed tocyclical dynamic loads, and therefore specification also proposed strict settlement andtilt of the allowed values. For the wind turbine tower are towering structures, it islarge about the bottom bending moment and the horizontal load. The naturalfoundation where the proposed construction site in can not meet the requirement ofthe foundation bearing capacity and settlement. In accordance with the requirementsof technical specification for pile foundation, we using the slab pile foundation ofcast-in-place reinforced concrete, to provides a basis for the design of pile foundationfor the similar geological conditions.In our country, the fan base are a variety of problems in the design andconstruction, and how to reliably predict in design and construction and effectivelyinhibit soil loose soft plastic soil or settlement, to ensure the construction safety, hasbecome a fan base in the construction of an important subject that must be addressed.For the natural foundation soil where the proposed construction site at is mainlyfor soft ground, it can not meet the requirements of foundation bearing capacity andsettlement, in accordance with the technical specifications pile, we using a large-situreinforced concrete slab foundation piles, we hope it can provide the basis for the design for pile foundation about similar geological conditions.In this paper, we defined the type of pile construction through the static loadtesting, the high and low strain dynamic testing, and internal forces testing. At thesame time, we make clear that it can be the supporting layer and the pile tip bearinglayers because of the deformation resistance, such as the fifth silt soil and the siltyclay layer.
Keywords/Search Tags:Wind power base, Pile foundation, Static load test, High and low strain dynamictest, Pile detection, Bearing capacity of foundation, Site, Geotechnical parameter
PDF Full Text Request
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