Author(s): Juhani Hoikkanen
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Keywords: No Keywords
Abstract: During springs 1978-1981, ice force measurements have been performed at the Kemi I lighthouse in the Gulf of Bothnia. The concrete lighthouse is equipped with transducers for measuring local ice pressures at different levels, the total ice load, and the vibrations of the structure. The equipment was installed for obtaining the pressure distribution and the total load of first-year ice ridges. The signals of the transducers were recorded by using a portable data logger. The analysis of the data includes the integration of the total ice load from local pressures, and the spectral analysis of the measured signals and the ice force. The computation of the total ice force was performed by using the Monte-Carlo simulation. Maximum local ice pressures yielded 7,5 MPa. The total ice loads for the structure of width 5,8 m were 7 MN for level ice of thickness 70-80 cm, and about 10 MN in case of small pressure ridges.
Year: 1984