摘要
将剪切滞模型的基本原理应用于预应力锚索作用机理研究,并考虑预应力锚索锚固段内稳定岩体及浆体材料的损伤特性,通过定义岩体、浆体的剪切损伤变量,给出了各自的损伤本构方程及相应的损伤演化方程,并将其用于对常规剪切滞模型的修正,得到了考虑材料损伤的修正剪切滞模型。应用该模型研究了预应力锚索侧阻力分布模式及荷载-位移特性,通过对一预应力锚索工程的具体分析,显示了该模型的合理性。
Shear lag model is employed to study the mechanism of prestressed anchoring cable considering the damage of rock mass and grouting material. By defining the shear damage variables of rock mass and grouting body, the damage evolvement equations corresponding to the basic principles of damage mechanics are proposed. The modified shear lag model is given by combining the general shear lag model with shear damage of rock mass and grouting body. The model is applied to the research of resistance distribution and loading-deformation relationship of bond section of pre-stressed anchoring cable. Experimental results are in good coincidence with the theoretical prediction.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第15期2562-2567,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金重大研究计划资助项目(90202007)。
