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针对桩承式加筋路堤应用于高填方路堤下处理软土地基的缺陷,考虑在土工格栅铺设工艺上加以改进,研发出桩承式加筋路堤挂网技术.通过假设自由位移场,采用2阶段法对桩承式加筋路堤挂网技术与现有技术作用下单桩侧向位移进行对比分析.分析结果表明:相对于普通加筋,采用挂网加筋可以有效约束路基侧向位移和路基深层侧向位移.随着筋材模量和桩体抗弯刚度的增大,挂网加筋对路基侧向位移的约束作用逐渐增强;软土弹性模量越小,挂网加筋对路基侧向位移的约束作用越好.
Aiming at the defect that the pile-supported reinforced embankment is used to treat the soft ground under the high-filled embankment and the improvement of the geogrid laying process is considered, a pile-supported reinforced embankment hanging netting technology is developed. By assuming the free displacement field, The two-stage method was used to analyze the lateral displacement of piles under the effect of the existing technology with pile-supported reinforced embankment.The results show that: compared with common reinforcement, the use of netting reinforcement can effectively restrain lateral displacement of subgrade Displacement and deep lateral displacement of embankment.With the increase of the modulus of reinforcement and the flexural rigidity of the pile, the restraint effect of the hanging reinforcement on the lateral displacement of the subgrade gradually increases. The smaller the elastic modulus of the soft soil, The restraining effect of tendons on lateral displacement of subgrade is better.