contributor author | Fu-Ping Gao | |
contributor author | Shuming Yan | |
contributor author | Bing Yang | |
contributor author | Yingxiang Wu | |
date accessioned | 2017-05-08T22:41:02Z | |
date available | 2017-05-08T22:41:02Z | |
date copyright | October 2007 | |
date issued | 2007 | |
identifier other | %28asce%290733-9399%282007%29133%3A10%281086%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/86338 | |
description abstract | Unlike previous mechanical actuator loading methods, in this study, a hydrodynamic loading method was employed in a flow flume for simulating ocean currents induced submarine pipeline stability on a sandy seabed. It has been observed that, in the process of pipeline losing lateral stability in currents, there usually exist three characteristic times: (1) onset of sand scour; (2) slight lateral displacement of pipeline; and (3) breakout of pipeline. An empirical linear relationship is established between the dimensionless submerged weight of pipeline and Froude number for describing pipeline lateral stability in currents, in which the current-pipe-soil coupling effects are reflected. Scale effects are examined with the method of “modeling of models,” and the sand particle size effects on pipeline stability are also discussed. Moreover, the pipeline stability in currents is compared with that in waves, which indicates that the pipeline laid directly upon the sandy seabed is more laterally stable in currents than in waves. | |
publisher | American Society of Civil Engineers | |
title | Ocean Currents-Induced Pipeline Lateral Stability on Sandy Seabed | |
type | Journal Paper | |
journal volume | 133 | |
journal issue | 10 | |
journal title | Journal of Engineering Mechanics | |
identifier doi | 10.1061/(ASCE)0733-9399(2007)133:10(1086) | |
tree | Journal of Engineering Mechanics:;2007:;Volume ( 133 ):;issue: 010 | |
contenttype | Fulltext | |