Development of visualization test system for pipe-soil deformation in transparent soil
XU Ping
ZHANG Minxia
CUI Wenjie
Abstract：In order to realize visualization for the internal deformation of pipeline surrounding soil during the process of subsidence,a visualization test system was designed and tested based on the transparent soil.Transparent soil was composed by glass sand,twelve alkane and No.15 white mineral oil mixture (1∶3.5).The model box was composed by transparent soil,sand box and the base of test box.The sand leakage method was adopted to complete the soil subsidence.Speckle field of sections were formed by the laser irradiation in the test.CCD camera was used to capture a sequence of images,and then PIV was used to analyze these images of speckle field.The displacement field was acquired during the soil subsidence process.The system realized the visualization of pipeline-soil deformation and got the displacement field.The soil-arching phenomena occured 2 ～3 times diameter of the pipe on the top of pipeline and soil on the top of pipe flowed around the pipe.The deformation of soil under the pipeline was increased and soil support was lost under the pipeline.The flexure deformation and additional stress increased rapidly.The visualization test system provides a new research method and idea to study the mechanization for pipeline-soil interaction induced by subsidence and experimental study for underground structure-soil interaction.
Keywords：transparent soilsubsidencelaser speckle fieldvisualization
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 125-130 )