岩石節理面在反覆來回剪動環境下，其剪力行為受粗糙度之影響，隨剪位移增加粗糙度亦逐步的磨損。本研究依據Mohr-Coulomb強度理論，結合一鋸齒之損傷函數與鋸齒強度破壞機制以建立剪力行為之數學模式。本文將三角型鋸齒狀節瘤之剪力破壞機制，分為尖峰強度、峰後剪力強度衰減階段、殘餘強度階段，依正應力高低分別進行完整剪力過程之數學模式，並與反覆直剪實驗結果比對，以印證本模式之適用性。 The shear behavior of rock joints under repeated shearing could be affected by the degradation behaviors of rough asperities. This paper uses a damaged energy function and shear failure criterion that is observed from the experimental test results to develop a mathematical model. The complete shear behavior is simply divided into the peak strength, post-peak strength, and residual strength states. This model is also evaluated by the repeated cyclic shear test results.
關聯:
岩盤工程研討會論文集=Proceedings of 2000 Taiwan Rock Engineering Symposium，頁67-78
