夹有泥皮粗粒土与结构接触面力学特性试验研究

进行了粗粒土与结构之间夹有泥皮和无泥皮两种状态的接触面单调和循环剪切试验，初步研究了夹有泥皮时接触面静动力学特性的规律和作用机理。试验表明，泥皮对粗粒土与结构接触面的力学特性有重要影响。当泥皮不厚时，接触面仍表现出粗粒土与结构接触面的基本力学特性。泥皮越厚，接触面的抗剪强度越低，相对法向位移会越大。当泥皮极厚时，泥皮将隔断粗粒土与结构面的接触而成为泥皮与结构接触面。泥皮对接触面力学特性的影响程度不仅与泥皮本身的特性及其厚度有关，还与构成接触面的结构面材料与粗粒土的特性有关。

Experimental study on behavior of soil-structure interface with slurry

The mechanical behavior and mechanism of the interface between structure and coarse grained soil with slurry were investigated through conducting monotonic and cyclic tests of both interfaces with and without slurry. The interface with slurry between structure and coarse grained soil can be thought as the one between structure and slurry if the slurry is thick enough. Whereas, the behavior of the interface with slurry would be similar to that of the interface between structure and coarse grained soil if the slurry is not thick enough, which is only affected quantitatively by the slurry. For example, the shear strength would be reduced and the compression would be increased if the slurry becomes thicker. The behavior and thickness of slurry as well as the behavior of structure material and soil are main factors to the behavior of the interface between structure and coarse grained soil with slurry.