Abstract:

A kind of image capture and displacement measurement system in centrifuge modeling is developed based on the idea of store forward. The system consists of five subsystems: image capturing subsystem, data storing subsystem, communication subsystem, analysis and processing subsystem, and supporting subsystem. This system can capture high quality images during the centrifuge model test. It can obtain the displacement field at any spot at an arbitrary time of the soil. It has the advantages of high automation, high precision, less preliminary preparation and noninterference to the soil. Using this system, the centrifugal modeling tests are used to conduct the failure process of a cohesive soil slope. The results show that the failure process can be divided into three phases; the strain localizations occur at the top and toe of the slope due to loading application.

Key words: centrifuge model test, displacement, measurement, image, slope