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通过地质勘察,查明利智公路K113+200～240段路基变形路基塌陷原因是由于地基承载力不足。文章在分析地质勘察资料的基础上提出了钢筋混凝土扩大基础挡土墙、桩基础挡土墙、锚定板挡土墙3种整治方案。经过技术、经济、维持通车等多方面比较的基础上,最后决定采用技术上可行、经济合理、施工相对简单和能维持通车的钢筋混凝土扩大基础挡土墙处理方法。
Through geological survey, it is found that the reason for subgrade collapse of K113 + 200 ~ 240 section of Lizhi Highway is due to insufficient foundation bearing capacity. Based on the analysis of geological survey data, the article proposed three kinds of remediation schemes of reinforced concrete foundation retaining wall, pile foundation retaining wall and anchoring plate retaining wall. Based on the comparison of technologies, economy and maintenance, we finally decided to adopt the reinforced concrete foundation wall treatment method which is technically feasible, economically reasonable, relatively simple to construct and able to be opened to traffic.