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Indexed by:会议论文

Date of Publication:2008-07-06

Included Journals:EI、CPCI-S、Scopus

Page Number:269-276

Key Words:Free spanning submarine pipeline; nonlinear seismic analysis; spatially varying earthquake

Abstract:A study of the nonlinear seismic response of free spanning submarine pipelines subject to a spatially varying earthquake ground motion is carried out. Firstly, an improved method for simulating multiple-station ground motions is proposed. Secondly, the motion equations of the pipeline under multiple-station excitation are derived. The hydrodynamic force applied on the pipeline is simplified as added masses. Thirdly, a nonlinear three-dimensional (3D) finite element model of free spanning submarine pipeline is established. The effects of different material constitutional relationships of steel pipe and soil as well as large displacement are discussed.