论文部分内容阅读
将复杂结构面形态转化为二进制编码信息,采用FLAC3D自动构建复杂结构面数值计算模型,通过改变结构面抗剪强度参数,探讨结构面粘结力、内摩擦角对剪切强度的影响。研究表明:随着结构面粘结力的增加,其剪切强度不断增大;结构面法向正应力越大,结构面粗糙度对于剪切强度的贡献也越大;随着粘结力的增大,拟合得到的粘结力和内摩擦角不断增大;粗糙度越大,其粘结力消耗在摩擦过程中的量值也越大,从而导致粘结力变小。随着内摩擦角的增大,内摩擦角对抗剪强度的影响逐渐增强,结构面粗糙程度对抗剪强度的效应也增强;随着内摩擦角的增大,粗糙度的影响逐渐显现,从而导致拟合的内摩擦角均大于设定的内摩擦角。
The complex structure surface morphology is converted into binary coding information. The numerical simulation model of complex structure surface is constructed automatically by FLAC3D. The influence of structural surface adhesion and internal friction angle on shear strength is discussed by changing the structural surface shear strength parameters. The results show that the shear strength increases with the increase of the bond strength of the structural plane. The greater the normal normal stress of the structural plane, the greater the contribution of the roughness of the structural plane to the shear strength. With the increase of the bond force Increases, and the fitting friction force and the internal friction angle obtained by the fitting increase. The larger the roughness, the larger the amount of the cohesion force consumption in the friction process, and the smaller the cohesion force becomes. With the increase of the internal friction angle, the influence of internal friction angle on the shear strength gradually increases and the effect of the roughness of the structural surface on the shear strength also increases. With the increase of the internal friction angle, the influence of roughness gradually appears, Resulting in fitting the internal friction angle is greater than the set internal friction angle.