双向搅拌粉喷桩在深厚海相软土地基加固中的应用

Application of Technology of Two-way Mixing Spouting Pile During Strengthening Roadbed in Deep Marine Soft Soil

软土在我国分布广泛,而粉喷桩技术是一种有效的软土地基加固方法。其中深厚海相软土地基具有工程性质差,地基加固时成桩难度大等特点,本文依托衢州至宁德铁路工程,通过海相软土路基进行粉喷桩加固地基试桩试验,探讨了双向搅拌粉喷桩的施工工艺,并分析了粉喷桩不同桩长在深厚海相软土地基加固过程中,成桩质量较好时的施工参数,以及施工技术要点和质量控制措施等,为粉喷桩技术更好的应用于工程实践提供参考和依据。

Soft soil is widely distributed in our country,and one of the most effective methods to the technology of Mixing Spouting Pile.Marine soft soil has poor engineering properties,such as difficulty of the taking shape of pile during construction.Relying on the Quzhou to Ningde railway engineering,the experiment was conducted in Marine soft soil.The construction technology of Two-way Mixing Spouting Pile and the construction parameters for better quality of shaping piles with different length in deep marine soft soil were discussed.Also the key steps during construction process and quality control measures were recommended.It provides he reference and basis for better application during the similar engineering.