中文摘要：

提出了一种新的H-V立体加筋（horizontal-vertical）模式,这是一种在传统水平条带式筋条上布置竖向或空间筋材形成的组合立体形式,其显著特点是所加竖向筋材能有效地限制筋材间土体的侧向位移,在竖筋侧面产生侧阻力,而且在竖筋间将形成“土体加强区”,从而有效改变加筋土的受力状况,提高土体的强度和稳定性。本文分别对水平加筋和H-V加筋两种加筋方式进行了多组的加筋地基模型试验,并将这两种加筋方式对承载力和沉降的影响进行了对比分析。试验结果表明,H-V加筋方式能明显提高地基承载力和减小地基沉降,而且其加筋效果随着竖筋高度和水平方向筋材长度的增加不断提高。在模型试验的基础上,初步分析了H-V加筋方式的作用机理。

英文摘要：

The conventional reinforcements of soils are often laid horizontally. A new concept of soil reinforced with horizontal-vertical （H-V） geosynthetics was proposed. In the proposed H-V reinforced soil, vertical reinforcing elements are placed upon the horizontal ones. The remarkable characteristic is that the vertical elements can not only restrict the lateral deformation of the soil, but also provide passive resistance on the lateral sides of the vertical elements and form ＇strengthened zones＇ , So, it can improve the stress state of the reinforced soil and increase the strength and stability greatly. In this paper, a series of model tests were conducted on foundations reinforced with H-V inclusions and horizontal elements respectively, subjected to strip loading. The bearing capacity and the settlement were compared. From the test results, it was shown that the H-V reinforcement can significantly increase the bearing capacity and reduce the settlement, as compared with the horizontal reinforcements. And the reinforcement effects were better with the increases in the height of vertical reinforcing elements and the length of horizontal reinforcements. Based on the model experiments, the interaction mechanism between soil and H-V inclusions was analyzed.