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On Earthquake Resistant Design Methods of Submarine Pipelines

Publication year Port and Airport Research Institute Technical Note 0307 1978.12
Author(s) Osamu Kiyomiya
Department
/Divison
Structures Division Senior Research Engineer
Executive Summary

Earthquake resistant design methods of submarine pipelines can be classified three methods; (1) dynamic response analysis by using multiple mass-spring model; (2) seismic deformation method notified in Ordinance of Technical Code for Petroleum Pipeline; (3) another seismic deformation method used in earthquake resistant design for BART Tube, Kinuura Undersea Tunnel and so on (BART-Kinuura method).
 These three design methods are applied to Ise Bay Submarine Pipeline, Kawasaki Port Submarine Pipeline (imaginary model) and Kinuura Port Submarine Pipeline (imaginary model).
 The ground is idealized into a lumped mass model or two lumped masses model and the submarine pipelines into beams in dynamic response analysis. Dynamic response analysis are carried out for straight pipe, riser and bend.
 The results obtained from calculation by a lumped mass model are fairly fitted the results by two lumped masses model.
 The maximum section forces at the submarine pipelines calculated by the seismic deformation method notified in the ordinance are bigger than those calculated by BART-Kinuura method and dynamic response analysis. However the maximum section forces calculated by BARTK-Kinuura method roughly agree with these calculated by dynamic response analysis.

PDF File /en/2023/04/04/pdf/en/no0307.pdf