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Indexed by:期刊论文

Date of Publication:2010-06-01

Journal:CHINA OCEAN ENGINEERING

Included Journals:SCIE、EI、ISTIC、Scopus

Volume:24

Issue:2

Page Number:305-320

ISSN No.:0890-5487

Key Words:free spanning submarine pipelines; model tests; hydrodynamic force models; dynamic response analysis; earthquake

Abstract:A test rig is built to model the dynamic response of submarine pipelines with an underwater shaking table in the State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, China. Model tests are carried out to consider the effects of exciting wave directions and types. Based on the experimental results, two hydrodynamic force models derived from Morison equation and Wake model are presented respectively. By use of hydrodynamic force models suitable for free spanning submarine pipelines under earthquakes, discretized equations of motion are obtained and finite element models are established to analyze dynamic response of free spanning submarine pipeline subjected to multi-support seismic excitations. The comparison of numerical results with experimental results shows that the improved Morison and Wake hydrodynamic force models could satisfactorily predict dynamic response on the free spanning submarine pipelines subjected to earthquakes.