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地质结构模型在公路黄土边坡设计中的作用

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Keywords: 道路工程,地质结构模型,理论分析,黄土边坡,稳定性

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Abstract:

？为了研究黄土地区地质结构与公路边坡稳定性、排水防护措施的关系,首先介绍了地质结构模型的概念、划分依据及其主要特征,然后将黄土地区复杂的地质结构划分为8种模型;在给定坡高和坡型、有无大平台的情况下,通过有限元模拟对比了各种模型的稳定性变化特性,给出是否采用大平台设计高边坡坡型的建议,明确了各类地质结构模型稳定性的差异;推荐了地质结构模型与边坡稳定性分析相结合的公路高边坡设计思路和适用的边坡防排水方案。结果表明:地质结构模型对边坡稳定性具有明显影响;Ⅰ、Ⅱ、Ⅲ类模型必须设置大平台,其余模型可不设置。

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