【摘要】 通过室内直剪试验,系统地研究了粗糙度、正应力对混凝土与基岩胶结面抗剪强度的影响,从而提出微风化花岗岩 混凝土胶结面剪切强度的JRC JCS模型,并给出了该模型的粗糙度适用范围.该模型考虑了粗糙度和正应力对胶结面剪切强度的影响,解释了剪切试验结果.此外,讨论了胶结面剪切强度的尺寸效应,给出粗糙度系数JRC与胶结面尺寸的关系式,为工程设计提供参考依据.更多还原

【Abstract】 Based on a systematical study of the effects of roughness and normal stress on the shear strength of bedrockconcrete cement planes through laboratory direct shear tests, a JRCJCS model is developed for slightly weathered graniteconcrete cement planes, and the scope of roughness in which the model can be used is given. With the model, the results of shear tests can be explained. Besides, the size effect of the shear strength of cement planes is discussed, and the relationship between the coefficient of roughness and size of cement planes is also derived, providing a basis for reference for engineering design.更多还原