Extension of three-dimensional discontinuous deformation analysis to frictional-cohesive materials

Hong Zhang, Shu guang Liu, Guang qi Chen, Lu Zheng, Ying bin Zhang, Yan qiang Wu, Pei deng Jing, Wei Wang, Zheng Han, Gui hui Zhong, Sha Lou

研究成果: ジャーナルへの寄稿学術誌査読

27 被引用数 (Scopus)

抄録

This paper extends three-dimensional discontinuous deformation analysis (3-D DDA) to model the frictional-cohesive failure behavior of geotechnical materials and structures. Firstly, a new contact detection scheme was developed to successfully identify the dominant sub-contacts and areas of the joints between arbitrarily shaped polyhedral blocks. Secondly, a modified joint contact model subjected to the Mohr-Coulomb failure criteria based on distributed cohesion instead of concentrated cohesion, was proposed to ensure the accuracy of the simulation by 3-D DDA. Thirdly, the extended 3-D DDA was verified by three examples, including joint contact detection, critical stability and failure mode of a system of polyhedral blocks. Finally, the complete failure process involving large displacement and rotation of multiple interaction blocks is exhibited dynamically. Overall, these examples exhibit that the extended 3-D DDA is now capable of accurately modeling the failure behavior of frictional-cohesive materials and structures, so as to optimize the material and structure stabilization or protection design.

本文言語英語
ページ(範囲)65-79
ページ数15
ジャーナルInternational Journal of Rock Mechanics and Mining Sciences
86
DOI
出版ステータス出版済み - 7月 1 2016

!!!All Science Journal Classification (ASJC) codes

  • 地盤工学および土木地質学

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