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本文采用罚函数与边界元混合法,根据隧洞的现场量测(相对)位移直接反算出围岩的弹性模量、泊松比和各原始应力分量的绝对值。文中引入了“预估约束”的概念,并采用了等量级反分析的技巧。通过两个算例的分析。其结果是令人满意的。
In this paper, the penalty function and boundary element method are used to calculate the elastic modulus, Poisson’s ratio and the absolute value of each original stress component directly from the measured (relative) displacement of the tunnel. The concept of “prediction constraint” was introduced in this paper and the technique of counter-analysis at equal level was used. Through the analysis of two studies. The result is satisfactory.