METHOD FOR ANALYZING FREEZING EXPANSION OF GROUND

To provide a method for analyzing freezing expansion of the ground, which makes it possible to accurately determine the expansion (stress state) of the ground when applying the freezing construction method.SOLUTION: In a method for analyzing a freezing expansion of the ground in which the state of the stress of the ground is detected when the freezing construction method is applied to the ground which is configured of a sandy soil layer with relatively small freezing expansion rate and a relatively large viscous soil layer, an analytical model is created by constructing a contact surface element with a lower deformation coefficient and shear stiffness than the sandy and viscous soil layers, in the boundary area between the sandy and viscous soil layers.SELECTED DRAWING: Figure 1 【課題】凍結工法の適用時の地盤の膨張（応力状態）を精度よく求めることを可能にする地盤の凍結膨張解析方法を提供する。【解決手段】凍結膨張率が相対的に小さい砂質土層と相対的に大きい粘性土層が存在する地盤に対して凍結工法を適用した際の地盤の応力状態を求めるための地盤の凍結膨張解析方法であって、砂質土層及び粘性土層よりも変形係数及びせん断剛性が低い接触面要素を砂質土層と粘性土層の境界に設けて解析モデルを作成するようにした。【選択図】図１