| 岩溶路基稳定性分析与处治措施 |
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| 引用本文： | 张成良.岩溶路基稳定性分析与处治措施[J].路基工程,2022,0(1):221-226. |
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| 作者姓名： | 张成良 |
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| 作者单位： | 苏交科集团股份有限公司，南京 210017 |
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| 摘 要： | 以大广高速南康至龙南段扩容工程C8标段岩溶路基工程为依托,采用理论及数值模拟方法对岩溶路基稳定性进行分析,研究溶洞路基稳定性和处理后的效果.研究表明:岩溶路基下溶洞的最小顶板厚度为1.26 rn,其溶洞无需处理.从处理效果及工程造价等方面综合考虑,对溶洞采用钢筋混凝土盖板进行处理,效果较好,路基产生的附加应力都集中在混...
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| 关 键 词： | 岩溶路基 稳定性评价 变形模拟 处治措施 治理效果 |
| 收稿时间： | 2021-05-10 |
Stability Analysis and Treatment Measures of Karst Roadbed |
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| Abstract: | Taking the karst subgrade of C8 section of expansion project of Nankang—Longnan section of Daguang expressway as the research object, the stability of karst subgrade has been analyzed by using the theoretical and numerical simulation methods. The stability of karst cave subgrade and the effect after treatment are studied. The research suggests that the minimum roof thickness of karst cave without subgrade treatment is 1.26 m. In view of the treatment effect and the project cost, the reinforced concrete cover plate is treated by the karst cave, and the reinforced concrete cover plate has a good effect. The maximum settlement and settlement difference of roadbed surface are reduced by 30.4 % and 54.8 % respectively after such treatment. |
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