Three-Dimensional elastoplastic analysis of strain-softening surrounding rock based on the non-linear bond-slip relationship considering hydraulic-mechanical coupling

In this study, a three-dimensional elastoplastic analysis of strain-softened surrounding rock is performed considering the hydraulic-mechanical coupling. A numerical iterative method for the analysis of the surrounding rock is proposed, and the corresponding calculation procedure is given. The method takes into account the relative slip between the anchors and the surrounding rock. The shear stress and axial force distributions of the anchors under the corresponding working conditions are calculated by the established calculation procedure and saved in the proposed dataset.

本研究针对考虑水力-力学耦合（hydraulic-mechanical coupling）的应变软化围岩（strain-softened surrounding rock）开展了三维弹塑性分析。研究提出了一种用于围岩分析的数值迭代方法，并给出了对应的计算程序，该方法考虑了锚杆（anchors）与围岩之间的相对滑移。通过所搭建的计算程序，可计算得到对应工况下锚杆的剪应力与轴力分布，并将相关数据存储于本研究构建的数据集中。