Shaking Table Test of Unidirectional Shear Box

Shaking Table Test of Unidirectional Shear Box

Domestic and international earthquake case studies and research have revealed that when an earthquake occurs, fault movement, ground motion, soil liquefaction, and its derivative phenomena can jeopardize life-sustaining pipelines that are either in the ground or on the surface. The domestic practical application of pipeline risk assessments often focus on leakage and deterioration management projects and seldom consider earthquake issues. Furthermore, research on pipelines affected by earthquakes is mostly limited to theoretical analyses and risk assessments. Therefore, considering that an underground pipeline has an exceedingly small diameter-axis ratio, to design for existing facilities, a one-dimensional shear box was modified to explore the effects of soil liquefaction or subsidence on the pipeline. To confirm the effectiveness of the onedimensional shear box, a frequency characteristic analysis and seismic input analysis were performed on a shaking table, and the ground response analysis was performed using the DEEPSOIL software simultaneously. The one-dimensional shear box test results were confirmed from the ground response. The results of the reaction analysis are consistent, which is sufficient to verify the reliability of the test equipment, and the behavior of the soil interaction with the pipeline structure can be discussed later.