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一、判断大气影响深度的原则膨胀土吸收水份体积增大,失去水份体积减小,体积增减造成土体沿水平和垂直方向反复运动,常使建筑物遭到破坏。土层水份的增减直接受大气控制,大气控制着土层含水量沿垂直方向变化的深度和变化的幅度。研究和确定大气影响土层含水量变化的深度,对基础埋深和胀缩变形的计算都有实际的意义。
First, to determine the principle of the depth of the atmosphere Expansion of the soil to absorb water volume increases, the loss of water volume decreases, the volume increases and decreases caused by repeated horizontal and vertical movement of soil, often destroyed the building. The increase or decrease of soil moisture is directly controlled by the atmosphere. The atmosphere controls the depth and the extent of the change of the soil moisture content in the vertical direction. Studying and determining the depth of the change of soil water content influenced by the atmosphere has practical significance for the calculation of the basic depth and the deformation of expansion and contraction.