摘要
首先根据节理岩体的损伤机制 ,建立了三维弹塑性损伤本构模型反映节理岩体的损伤变形特性 ,然后考虑节理岩体的岩锚支护效应 ,建立了空间损伤锚柱单元模型模拟锚杆的支护效果 ,最后将建立的模型应用于三峡船闸高边坡 ,进行了边坡加锚节理岩体开挖卸荷三维非线性有限元计算 。
According to damage mechanism of jointed rockmass, a 3 D elastoplastic damage constitutive model is firstly established to reflect damage deformation properties of jointed rockmass. Secondly, considering rock bolt supporting effect, we establish a cylindrical damage rock bolt element model to simulate reinforcing effect of bolts in intermittent jointed rockmass. Finally, the proposed models have been applied to the stability analysis of the high slope of the Three Gorges shiplock under construction, and the 3 D non linear FEM of bolted slope rockmass gives some useful conclusions of engineering.
出处
《武汉水利电力大学学报》
EI
CSCD
2000年第2期6-10,共5页
Engineering Journal of Wuhan University
基金
国家自然科学基金资助项目 !(5949360 0 )
关键词
断续节理岩体
弹塑性损伤
岩锚支护
边坡岩体
intermittent jointed rockmass
elastoplastic damage
rock bolt reinforcement
3-D finite element method
