混凝土芯砂石桩复合地基技术在处理桥头深厚软基中的应用

Application of the Concrete-cored Sand-gravel Pile Composite Foundation Technology Treating Thick and Soft Foundation at Bridge Head

针对目前桥头段深厚软基处理方法的缺陷与不足,从控制工后沉降重要理念出发,介绍了混凝土芯砂石桩复合地基技术控制桥头段深厚软基工后沉降的设计思想、施工设备、施工工艺及检测与质量控制方法。该技术特别适合于高含水量、高有机质含量地区对工后沉降有严格要求的深厚软基处理。

The concrete-cored sand-gravel pile composite foundation technology applied to treat thick and soft foundation at bridge head from the idea of controlling post-construction and differential post-construction settlement is introduced in this paper. The design concepts, the construction equipment and technology, the detection and quality control method are introduced in detail. This new technology has great practical values and bright market prospects in thick and soft foundation treatment, especially in high water and high organic matter content areas.