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采用三维模型试验,考虑路堤高度、桩帽宽度、桩净间距、工后固结沉降、桩间土压缩模量、水平加筋体等影响因素,对桩网结构加固路堤的沉降变形和荷载传递规律进行系统的研究,得到一些有益的结论,并且将试验的部分结果与理论解析解进行比较,结果发现:对于三维空间土拱,BS 8006法、改进的太沙基法、Hewlett和Randolph法所计算的结果与试验结果较为吻合,并且随着桩帽尺寸的增加,它们之间的吻合程度越来越好。而改进的Guido法和Carlsson法计算的结果与试验结果差异较大。该研究成果可为桩网结构加固路堤设计提供有益的参考。
Taking three-dimensional model test, considering the influence factors of embankment height, pile cap width, net spacing of pile, post-construction consolidation settlement, compressive modulus of soil between piles and horizontal reinforcement, the settlement deformation and load transfer The results show that for soil arching in three-dimensional space, the BS 8006 method, the modified Terzaghi method, the Hewlett and Randolph methods The calculated results are in good agreement with the experimental results, and as the size of the pile cap increases, the anastomosis between them is getting better and better. However, the results calculated by the improved Guido method and the Carlsson method are quite different from the experimental results. The research results can provide a useful reference for the design of embankment reinforced by pile-net structure.