摘要
围岩与衬砌交界面的性能直接影响着隧道的稳定性和安全性。为了研究交界面粗糙度(JRC)对岩石-混凝土组合试样破坏过程的影响,本次研究利用PFC3D分析程序进行了三维数值模拟研究,模拟结果表明随JRC增大,组合试样的力学性能、裂纹分布以及破坏模式均明显变化。通过数值模拟可以更准确地分析交界面粗糙度对岩石-混凝土组合体试样的力学性能和破裂机理,对地下工程的设计和施工具有重要参考价值。
The performance of the interface between the surrounding rock and the lining directly affects the stability and safety of the tunnel,in order to study the influence of interface roughness(JRC)on the damage process of rock-concrete composite specimens,three-dimensional numerical simulation was carried out in this study using the PFC3D analysis programme,and the simulation results show that the mechanical properties,crack distribution and damage pattern of composite specimens change significantly with the increase of JRC.Through numerical simulation,the mechanical properties and fracture mechanism of rock-concrete composite specimens can be analysed more accurately by the interface roughness,which can provide an important significance for the design and construction of underground projects.
作者
梅凤清
刘嘉伟
MEI Feng-qing;LIU Jia-wei(School of Mechanics and Civil Engineering,China University of Mining and Technology,Xuzhou 221116,China)
出处
《价值工程》
2024年第3期107-109,共3页
Value Engineering
