碎石注浆桩在公铁并行条件下公路工程软基施工的应用

Application of Gravel Grouting Pile in Soft Foundation Construction of Highway Engineering under Condition of Parallel Highway and Railway

摘要:

结合公铁并行条件下某一级公路软基施工的案例，针对场地范围内软土分布广且深厚的情况，保证公路施工及运营期间对城轨的影响降至最低，软基处理采用碎石注浆桩加固处理，充分发挥其对既有建筑及基础的影响较小及施工安全可靠的优势，阐述碎石注浆桩的施工方法和监测。其成果对碎石注浆桩在公铁并行条件下公路工程的施工具有参考应用价值。

Abstract:

Combined with a case of soft foundation construction of a Class I highway under the condition of parallel highway and railway, aiming at the wide and deep distribution of soft soil within the scope of site, and to ensure the impact of highway construction and operation period on urban rail to a minimum, the use of gravel grouting pile for reinforcement treatment of soft foundation can fully play its advantages of less influence on the existing buildings and foundation, and the construction safety and reliability. The construction method and monitoring of gravel grouting pile are expounded. Its results are of reference value to construct the gravel grouting pile in the highway engineering under the condition of parallel highway and railway.