Post-cracking Behabiour of a Wind Turbine Concrete Tower

Rodríguez, Javier and Marti Rodriguez, Joaquin and Martinez Cutillas, Francisco J. (2010). Post-cracking Behabiour of a Wind Turbine Concrete Tower. In: "SCC SIMULIA Customer Conference 2010", 25/05/2010 - 27/05/2010, Rhode Island, EEUU.

Description

Title: Post-cracking Behabiour of a Wind Turbine Concrete Tower
Author/s:
  • Rodríguez, Javier
  • Marti Rodriguez, Joaquin
  • Martinez Cutillas, Francisco J.
Item Type: Presentation at Congress or Conference (Article)
Event Title: SCC SIMULIA Customer Conference 2010
Event Dates: 25/05/2010 - 27/05/2010
Event Location: Rhode Island, EEUU
Title of Book: Proceedings of SCC SIMULIA Customer Conference 2010
Date: 2010
Subjects:
Freetext Keywords: wind turbine, concrete, cracking, natural frequency
Faculty: E.T.S.I. Minas (UPM)
Department: Ingeniería de Materiales [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The paper deals with the dynamic performance of a simply reinforced concrete tower built using prefabricated elements. The main uncertainty of this strategy stems from the possible cracking of the concrete and its implications on the stiffness, natural frequency and dynamic amplification of the tower. In 2006 an 80 m high prototype was built, supporting a 1.5 MW wind generator, carefully instrumented and test loaded to 80% of its design capacity. The prototype and installed instrumentation remained in operation for 3 years. Detailed calculations were carried out of the cracking induced in the concrete and its effects on the natural frequency of the tower, as a function of wind speed and orientation; the results were compared with the monitoring data. It is concluded that numerical modelling with Abaqus allowed good predictions and interpretations of the observed response of the tower. Also, simply reinforced concrete is shown to be a good option for high towers; if the structure is well designed, the natural frequency will not migrate to a point where its proximity to the forcing frequency will lead to unacceptable levels of the dynamic amplification.

More information

Item ID: 8961
DC Identifier: http://oa.upm.es/8961/
OAI Identifier: oai:oa.upm.es:8961
Deposited by: Memoria Investigacion
Deposited on: 06 Oct 2011 11:14
Last Modified: 20 Apr 2016 17:34
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