Three-dimensional visualization true triaxial simulation test bench

Abstract

The invention discloses a three-dimensional visualization true triaxial simulation test bench. The three-dimensional visualization true triaxial simulation test bench mainly consists of three parts, namely a counterforce plate framework, a force transmission steel plate framework and a transparent force transmission plate framework, wherein a model is positioned in the transparent force transmission plate framework, the transparent force transmission plate framework is positioned in the force transmission steel plate framework, the force transmission steel plate framework is positioned in the counterforce plate framework, a counterforce plate is connected with a force transmission steel plate through a loading oil cylinder, the force transmission steel plate is fixedly connected with a transparent force transmission plate, a base and a counterforce plate at the top are respectively provided with a linear laser, image acquisition instruments are installed on counterforce plates at the front side and the rear side, each force transmission steel plate is in a hollowed structure, and tunnel excavation holes are formed in the centers of the counterforce plate at the rear side, a force transmission steel plate at the rear side and a transparent force transmission plate at the rear side. The three-dimensional visualization true triaxial simulation test bench can be used for respectively simulating three different working conditions, namely true triaxial loading, plane strain and plane stress, and has the advantages of simple and compact structure, easiness in machining and assembling, low production cost and the like.

Description

technical field [0001] The invention relates to a simulation test technology, which is especially suitable for three-dimensional visual physical simulation of underground geotechnical engineering such as tunnels. Background technique [0002] In geotechnical engineering simulation test research, in order to fully grasp the deformation mechanical properties of engineering surrounding rock, it is necessary to obtain the deformation field evolution process of one or more planes of the model in a certain period of time. For this reason, digital cameras are widely used to take image sequences of the model observation surface during the test period, and then use digital image correlation technology to analyze these images to obtain the evolution process of the displacement field of the observation surface. [0003] In order to meet the requirements of image acquisition, some of the existing simulation test benches adopt the plane stress simulation method, so that a certain surface...

AI Technical Summary

Problems solved by technology

However, at present, there is no simulation test bench that can meet the requirements of true triaxial loading and realize the full-field deformation measurement of two orthogonal planes inside the model.

Images