6 April 2007 Dynamic assessment of undersea pipeline bedding condition
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Abstract
In this paper, a dynamic method will be developed to identify the surrounding bedding conditions of an undersea pipeline. The pipeline on the seabed is modeled as a simply supported beam on an elastic foundation. Two parameters are used to describe the scour or free span of the pipeline: they are the central location of the scour or span and the width of the scour or span. The study takes into account the dynamic interaction between the pipeline and the elastic foundation. The parameters are determined from natural frequencies of the pipeline. The effect of the number of natural frequencies and the measurement noise levels on the accuracy of the identification results of the pipeline bedding conditions is studied. Numerical simulation shows that the method is effective and reliable to assess the bedding conditions of the undersea pipeline.
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X. Q. Zhu, H. Hao, "Dynamic assessment of undersea pipeline bedding condition", Proc. SPIE 6532, Health Monitoring of Structural and Biological Systems 2007, 65321D (6 April 2007); doi: 10.1117/12.714003; https://doi.org/10.1117/12.714003
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