软土路基对高速公路施工造成的影响的部分主要是软土路基成分相对较低。一般存在以下两种情况，第一，路基下沉。路基下沉是高速公路危害中最常见问题，主要由于施工技术不合理、处理技术不过关，从而引发的路基变形，造成路基不稳定。软土路基下沉很容易造成巨大隐患，会进一步的引发大面积高速公路路基下沉，影响交通运输，制约安全交通的正常发展。第二，路基滑坡。在高速公路的施工中软土路基是重要组成部分，因其特性，导致高速公路的稳定性下降，路基强度也不能保障。
The
impact of soft soil roadbed on highway construction is mainly due to
the relatively low composition of soft soil roadbed. There are generally
two situations: firstly, the roadbed sinks. Roadbed subsidence is the
most common problem among highway hazards, mainly due to unreasonable
construction techniques and inadequate treatment techniques, resulting
in roadbed deformation and instability. The sinking of soft soil roadbed
can easily cause huge hidden dangers, which can further cause
large-scale highway roadbed sinking, affect transportation, and restrict
the normal development of safe transportation. Secondly, the roadbed
landslide. In the construction of highways, soft soil roadbed is an
important component, and its characteristics lead to a decrease in the
stability of the highway, and the strength of the roadbed cannot be
guaranteed.
高速公路工程中常见的软土路基处理方法：
Common soft soil roadbed treatment methods in highway engineering:
1、换填法：换填法为高速公路软土路基施工中常用的一类软土路基施工技术。换填法，顾名思义即为通过置换软土路基土壤，回填结构稳定性高、含水量合格的土壤，进行软土路基处理，确保后续工程施工中路基质量的合格性，保障工程施工发展中的安全稳定性。其中，在换填法施工中，施工单位常用的换填土壤有粉煤灰混合土壤、矿渣混合土壤、碎石渣混合土壤。
1.
Replacement method: The replacement method is a commonly used type of
soft soil roadbed construction technology in highway soft soil roadbed
construction. The replacement method, as the name suggests, refers to
the process of replacing soft soil roadbed soil, backfilling soil with
high structural stability and qualified water content, and carrying out
soft soil roadbed treatment to ensure the qualification of roadbed
quality in subsequent engineering construction and ensure the safety and
stability of engineering construction development. Among them, in the
construction of replacement method, the commonly used replacement soil
by construction units includes fly ash mixed soil, slag mixed soil, and
gravel mixed soil.
2、强夯法：强夯法即为通过强行夯实的方式，提升施工面的强度，确保后续工程施工的结构稳定性和安全性。强夯法在高速公路软土路基施工中，也为常用的施工處理方法。
2.
Dynamic compaction method: Dynamic compaction method refers to the use
of forced compaction to enhance the strength of the construction surface
and ensure the structural stability and safety of subsequent
engineering construction. The dynamic compaction method is also a
commonly used construction treatment method in the construction of soft
soil roadbed on highways