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Full-Text Articles in Geotechnical Engineering
Fracturing Mechanism Of Rock-Like Specimens With Different Joint Densities Based On Dic Technology, Fei-Fei Qi, Ke Zhang, Jian-Bin Xie
Fracturing Mechanism Of Rock-Like Specimens With Different Joint Densities Based On Dic Technology, Fei-Fei Qi, Ke Zhang, Jian-Bin Xie
Rock and Soil Mechanics
In order to study the influence of joint density on the strength characteristics and failure modes of rock mass, the rock-like specimens with different joint densities were prepared by using 3D sand printing, with the quartz sand and furan resin being employed as the printing materials. The uniaxial compression test was performed on the 3D sand printed specimens, and the digital image correlation (DIC) method was used as a non-contact technique to monitor the full-field deformation. The crack initiation, propagation and coalescence behaviors were quantitatively analyzed from the micromechanics point of view. The results show that the shape of stress-strain …
Deformation And Fracturing Characteristics Of Fracture Network Model And Influence Of Filling Based On 3d Printing And Dic Technologies, Ke Zhang, Fei-Fei Qi, Yu-Long Chen
Deformation And Fracturing Characteristics Of Fracture Network Model And Influence Of Filling Based On 3d Printing And Dic Technologies, Ke Zhang, Fei-Fei Qi, Yu-Long Chen
Rock and Soil Mechanics
Due to the complexity of fracture distribution in engineering rock mass, the physical modeling of fracture network is one of the key problems in rock mechanics experiments. In this study, a 3D printing method of fracture network model based on water-soluble materials with polyactic acid materials as supporting base is proposed. Based on the water solubility of printing material, a method for preparing rock-like model specimens containing fracture network is established. Through digital image correlation (DIC) method, the deformation and fracturing characteristics of rock-like model specimens during loading process are quantitatively studied, and the influence law of filling material is …