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本文研究黄土地基的湿陷特性并提出在建筑物常压力下浸水后的变形计算方法。计算公式是藉虎克元件及开尔文体串联的三单元流变模型推导得出。方程中的粘滞系数η与土层厚度2h以及上述力学模式的土样在完成瞬时应变后饱和黄土的渗透系数k值有关,然后藉太沙基——开尔文理论的相关性计算得出。本文建议的湿陷量计算方法为黄土地区房屋地基进行浅层加固或压实处理措施即能减少或消除地基湿陷对上部结构危害的方案提供了理论依据。
This paper studies the collapsibility characteristics of loess foundations and proposes a deformation calculation method after soaking in buildings under normal pressure. The calculation formula is deduced from the three-element rheological model in which the Hooke element and the Kelvin body are connected in series. The viscous coefficient η in the equation is related to the k value of the permeability coefficient of the saturated loess after completion of the instantaneous strain in the soil sample with the thickness of 2h and the above-mentioned mechanical model, and then calculated by the correlation of the Tasha-Kelvin theory. The method for calculating the amount of collapse recommended in this paper provides a theoretical basis for the shallow reinforcement or compaction measures for the foundation of the house in the loess area, which can reduce or eliminate the damage caused by the foundation collapse.