Since the reform and opening up, with the continuous development of socialist market economy in China, the construction quality of highway engineering has been highly valued by all sectors of society. However, due to the soft foundation in the construction, the expected construction target cannot be achieved. Therefore, the effective treatment of soft soil subgrade has an important impact on the construction efficiency of the whole project. In view of this, this paper mainly takes the reconstruction project of highway (secondary highway) from Laoguan to Tiehekou of S333 (original S313) as an example, expounds the basic content of soft soil foundation in road engineering, and makes an in-depth exploration of its specific application technology.%改革开放以来, 随着我国社会主义市场经济的不断发展, 公路工程的施工质量受到了社会各界的高度重视, 但由于施工中的软土地基问题, 无法达到预期的施工目标, 因此, 对软土路基进行有效的处理对整个工程的施工效益有重要的影响.鉴于此, 论文主要以S333 (原S313) 老关至铁河口 (醴陵) 段公路 (二级公路) 改建工程为例, 阐述了道路工程中软土路基的基本内容, 并对其具体应用技术进行深入探索.
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