The Plastic Zone of Clay under Foundation Load: an Experimental and Numerical Analysis

• Published in: International journal of simulation modelling Vol. 22; no. 1; pp. 145 - 156
• Main Authors: Liu, X. H., Jiang, S. Q., Zeng, Y. Q., Hu, W. D., Gong, Y., Chen, J. L.
• Format: Journal Article
• Language: English
• Published: Vienna DAAAM International Vienna 01.03.2023
• Subjects: Bearing capacity; Clay; Cohesive soils; Discrete element method; Failure modes; Numerical analysis; Particle image velocimetry; Plastic zones; Shallow foundations; Soil dynamics
• ISSN: 1726-4529; 1726-4529
• DOI: 10.2507/IJSIMM22-1-CO3

In order to study the generation and distribution of plastic zone of cohesive soil foundation with the change of foundation pressure and foundation width, particle image velocimetry testing technology and discrete element method are used to study the dynamic distribution characteristics of plastic zone of cohesive soil, foundation failure mode and corresponding foundation bearing capacity values. By using particle image velocimetry testing technology, the plastic zone of clay under different foundation load is obtained, in which the ultimate foundation bearing capacity can be taken as 120 kPa. The development law of foundation plastic zone simulated by UDEC is highly consistent with that of foundation plastic zone based on PIV test. Through the parameterized numerical simulation test of the foundation plastic zone, this paper discusses the variation law of foundation plastic zone with the changes in the foundation load and the width of foundation, which can be used to study the dynamic development process of plastic zone of the shallow foundation. The research has important guiding significance for evaluating the range of foundation plastic zone in foundation design.