论文部分内容阅读
分别针对纯砂地基、水平加筋地基和新型三维立体加筋(简称横-竖加筋)地基进行了多组模型试验。主要研究了单层横-竖加筋深度和横-竖加筋层数对地基的影响,并通过与水平加筋地基的比较,结合横-竖地基砂土滑移面的形状,初步分析了横-竖加筋地基的加固机制。试验结果表明,同等试验条件下,横-竖筋的加筋效果较水平筋的好,对于单层横-竖加筋地基,加筋效果随加筋深度的增加而减弱,加筋深度超过一定范围后,加筋对地基受力性能的改善不明显。对于多层横-竖加筋地基,随加筋层数的增加,承载力增加,沉降减小。
A series of model tests were conducted on the foundation of pure sand foundation, horizontal reinforced foundation and new three-dimensional reinforced (referred to as horizontal-vertical reinforcement) foundation respectively. This paper mainly studies the influence of single-story horizontal-vertical stiffened depth and horizontal-vertical stiffened layer on the foundation. Based on the comparison with horizontal reinforced foundation and the shape of the sliding surface of horizontal-vertical foundation sand, Horizontal - reinforcement of reinforced foundation. The test results show that under the same test conditions, the reinforcement effect of horizontal-vertical reinforcement is better than that of horizontal reinforcement. For single-story horizontal-vertical reinforcement foundation, the reinforcement effect decreases with the increase of reinforcement depth, and the reinforcement depth exceeds a certain level After the range, reinforced on the improvement of mechanical properties of the foundation is not obvious. For multi-storey horizontal-vertical stiffened subgrade, as the number of stiffened layers increases, the bearing capacity increases and the settlement decreases.