节理岩体热应力问题的非连续变形分析方法

DDA METHOD OF THERMAL STRESS PROBLEM FOR JOINTED ROCK MASS

结合非连续变形分析方法 ,提出了一种研究节理岩体热应力问题的等效初应力方法。该方法将温度变化对岩体的力学影响转化为等效初应力的作用来求解节理岩体热应力问题 ,给出了平面应力和平面应变问题中等效初应力和等效载荷矩阵的计算公式。

Combined with DDA, the equivalent initial stress method is presented to solve the thermal stress problem of jointed rockmass. In the method, the effect of temperature change is equivalent to that of initial stress. The formulas of equivalent initial stress and equivalent loading for plane problem are given. Two examples show the method presented here is effective.