高速公路扩建软基及桩基处理技术比选

On comparative selection of extension of soft foundation and treatment technique of pile foundation on expressways

通过沪宁高速公路扩建过程中水泥搅拌桩、高压旋喷桩、PTC管桩、素混凝土钻孔灌注桩的应用,从施工准备到验收的施工过程,分析了各种方案加固软土地基的机理、施工工艺和相应的使用特点,以积累相关经验。

According to the extension process of Shanghai to Ningbo expressway,the paper analyzes the application of cement mixing pile,high-pressure rotary jet grouting pile,PTC pipe pile and plain concrete bored grouting pile,points out the mechanism,construction craft and relative utility characteristics of the intensification of the soft soil foundation from many schemes,so as to accumulate relative experience.