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填方路基的稳定性问题集中表现为路基过大的沉降或不均匀沉降。而不均匀沉降产生,将导致路面结构的过度破坏,这不仅会大幅度增加公路养护和维修费用,而且影响交通运输的正常运行。本文针对这个问题,对路基不均匀沉降及其处治措施进行研究与评价,通过介绍路基不均匀沉降国内外发展概况,从以下四个方面开展工作:(1)沉降理论分析;(2)路基不均匀沉降产生模式及成因分析本文首先定量地对路基沉降的机理进行分析,从而得出了影响路基不均匀沉降几个因素。在此基础上分析了路基不均匀沉降的原因并总结出六种不同沉降模式。
The problem of the stability of fill embankment is mainly manifested as excessive subgrade settlement or uneven settlement. Uneven settlement will lead to excessive destruction of pavement structure, which will not only greatly increase the cost of road maintenance and repair, but also affect the normal operation of transportation. In this paper, we study and evaluate the uneven subsidence of subgrade and its treatment measures according to this problem. By introducing the development of uneven subsidence of subgrade at home and abroad, we work from the following four aspects: (1) Theoretical analysis of subsidence; (2) Uniform settlement pattern and its origin analysis In this paper, firstly, the mechanism of subgrade settlement is quantitatively analyzed, and several factors that affect the subgrade settlement are obtained. Based on the analysis, the reasons for uneven subgrade settlement are analyzed and six different settlement modes are summarized.