外层井壁、冻结壁、泡沫板共同作用机理研究

The study on interaction mechanism among the outer shaft lining,the frozen soil wall and the foam board

基于粘弹性理论,建立一个适用于深厚冲积层的考虑冻结壁、外层井壁、泡沫板共同作用的粘弹性计算模型,模型中同时考虑了冻结壁的蠕变变形。导出了冻结壁黏弹性流变方程;并基于冻结壁、泡沫板和外层井壁之间的作用机理以及泡沫板压缩特性,推导出考虑泡沫板影响的辅助方程并应用于冻结壁黏弹性流变方程,从而得到冻结压力与井帮位移的关系式。

Based on the viscous-elastic theory,the viscous-elastic calculation model is established.The interaction mechanism among the outer shaft lining,the frozen soil wall and the foam board is considered in the model.The creep property of frozen soil wall is also taken into account.The viscous-elastic formula of Frozen wall is derived;from The interaction mechanism among the outer shaft lining,the frozen soil wall and the foam board and the compression properties of foam board he influence of auxiliary equation are obtained;applied the equation to the viscous-elastic formula,then the relationship between freezing pressure and displacement of sidewall can be derived.