Centrifuge Modelling of Improved Ground

Abstract

Soft soil is often encountered during infrastructure construction, in which large ground settlement and stability failure can be anticipated. There are many soil improvement techniques in existence to counter these problems. The behaviour of improved ground is affected by many factors such as the physical and mechanical properties of the original ground and the improved ground, interaction of the original and improved ground, external loading conditions, etc. Many centrifuge model tests have been carried out on the topic of ground improvement, which can be classified into two categories: the investigation of soil properties’ changes and the behavior of original ground during ground improvement work or the investigation of the behavior of improved ground. The Port and Airport Research Institute carried out many centrifuge model tests on research topics related to several ground improvement techniques over many years. In this report, several examples of centrifuge modelling carried out at the Institute regarding these two categories are briefly introduced.