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由冻结温度场所确定的冻结壁力学性质表现为显著的非均质性。从这一力学特征出发,本文给出了非均质冻结壁弹性应力分布的解析解,并进一步探讨了非均质冻结壁的弹塑性应力状态。算例表明,在弹性条件下进行冻结壁的设计是不合理的,只要允许冻结壁一小部分进入塑性状态,冻结壁的承载能力将大大地提高。本文为合理地进行冻结壁设计提供一种理论依据。
The mechanical properties of the frozen wall determined by the freezing temperature location show significant heterogeneity. Starting from this mechanical characteristic, the analytical solution of the elastic stress distribution of the heterogeneous frozen wall is given in this paper, and the elasto-plastic stress state of the non-homogeneous frozen wall is further discussed. The example shows that the design of the frozen wall under elastic conditions is unreasonable. As long as a small part of the frozen wall is allowed to enter the plastic state, the load-bearing capacity of the frozen wall will be greatly improved. This paper provides a theoretical basis for the rational design of frozen walls.