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Sahel N. Abduljauwad Hamdan N. Al-Ghamedy

Summary: Sahel N. Abduljauwad
Hamdan N. Al-Ghamedy
e-mail: hghamdi@kfupm.edu.sa
Junaid A. Siddiqui
Ibrahim M. Asi
Naser A. Al-Shayea
Department of Civil Engineering,
King Fahd University of Petroleum and Minerals,
Dhahran 31261, Saudi Arabia
Stability of Vertically Bent
Pipelines Buried in Sand
This paper discusses the stability of underground pipelines with preformed vertical bends
buried in sandy soil. More specifically, the minimum cover height required to prevent the
pipe from bowing under the action of forces due to temperature change and internal
pressure is estimated. The variables considered include the pipe and soil materials, di-
ameter, thickness, overburden height, bend radius, bend angle, internal pressure, fluid
specific weight, and temperature variation. A comprehensive three-dimensional finite el-
ement analysis is carried out. The results are extracted from the output obtained. These
results are put in a database which is used to develop general regression models to
determine the relationships among the different variables. Different buckling modes are


Source: Al-Shayea, Naser Abdul-Rahman - Department of Civil Engineering, King Fahd University of Petroleum and Minerals


Collections: Engineering