新旧道路结合处差异性沉降问题分析

Analysis on Differential Settlement of the Junction of Old and New Roads

为解决某公路改扩建工程中遇到的新旧道路结合处差异性沉降问题,论文结合工程实际,对软土地基上新旧道路结合处的差异性沉降原因进行了分析研究,主要由场地类别、附加应力及施工技术不同等原因导致。提出了对软土地基进行处理、在结合部位铺筑土工合成材料及选用填筑材料的方法,为后续设计及施工提供依据。

In order to solve the problem of the difference settlement of the junction between old and new roads encountered in the reconstruction and expansion of a highway reconstruction project, this paper analyzes and studies the causes of the difference settlement of the junction between old and new roads on the soft soil foundation, combining with the project practice. It is mainly caused by different types of site, additional stress and construction technology. This paper puts forward the methods of treating soft soil foundation, paving geotechnical synthetic materials in the junction and selecting reasonable filling materials, to provide the basis for the subsequent design and construction.