A parkable piezoprobe for measuring Cv at shallow depths for offshore design
作者： S. CHATTERJEE , M.F. RANDOLPH , D.J. WHITE
关键词: Engineering 、 Geotechnical engineering 、 Consolidation (soil) 、 Drilling 、 Pore water pressure 、 Offshore geotechnical engineering 、 Penetrometer 、 Dissipation 、 Embedment 、 Submarine pipeline
摘要: The coefficient of consolidation (cv) at shallow depth is an important parameter for the design many offshore facilities, particularly pipelines. This paper sets out concept, operation and interpretation a new simple tool measuring cv in situ depths. large cylindrical penetrometer with hemispherical tip, which embedded statically under self-weight, example from winch. After embedment, ‘parked' – not requiring support drill-string pore pressure dissipation monitored. ‘parkable' feature allows to be added conventional drilling or systems used parallel. has been simulated using large-deformation finite-element analysis Cam Clay plasticity soil model. Results form normalised undrained penetration response water dissipation–time history are presented. indicates weight requirement device. The...
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