Experimental research on strain properties of buried pipelines at strike-slip fault crossings
CHEN Yanhua
LIU Xiao
WANG Le
GE Nan
CHEN Haibin
LIU Linlin
Abstract：Buried pipelines at strike-slip fault crossing would be buckling,rupture and engender other damages under the action of external forces such as earthquake.It is very important for the design and protection of pipe engineering to study strain properties of buried pipelines subjected to strike-slip faults.Stresses of buried pipelines crossing strike-slip faults are simulated by the aid of the early designed experimental apparatus for combined ground deformation,and strain distribution and change of soil pressure around pipeline are measured.Also,effects of diameters of pipeline on axial strain and soil pressure around pipelines are analyzed,and the deformation region of pipelines are obtained.The test results indicate that pipelines near fault plane are subjected to axial tension or compression during faults slipping along the fault plane,and their deformations are approximately centrally symmetrical along intersection point of the fault planes and pipelines.The pipelines far from fault move with soil so that they are not deformed,thus,the deformations of pipelines occur in a certain region near the fault.The larger diameter of a pipeline is,the smaller deformation region affected by fault is.Soil pressure around the pipelines and the axial strain of pipelines near the fault increase with the increase of the displacement of fault slipping.Furthermore,axial strain of pipelines and soil pressure around pipelines decrease with the increase of the pipeline diameter.
Keywords：pipeline engineeringstrike-slip faultburied pipelinestrainsoil pressuredistance of fault dislocationtest
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 55-61 )