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海相软土地质复杂,特别是珠三角地区沿海岸线人工造地较多,随着大规模基础设施建设,常规工艺钻孔灌注桩成桩质量不理想,混凝土超方严重,本文对该地区钻孔灌注桩施工中存在的质量问题进行了深入分析,跟踪多个桥梁、房屋及设备基础钻孔灌注桩施工过程,采用不同施工工艺进行研究。对桩基围岩软土分别采用固结、插打钢护筒和原状钻孔等不同工艺,通过数据分析,得出较为可行的海相软土地基钻孔桩施工新工艺。
Marine soft soil complex, especially in the Pearl River Delta coast more artificial land along the coast, with large-scale infrastructure, the conventional pile quality of cast-in-situ pile is not ideal, serious over-serious concrete, the paper on the area The quality problems in the construction of cast-in-place bored pile are analyzed in depth, and the construction process of many bored cast-in-place piles of bridges, houses and equipment is tracked and different construction techniques are used for the research. For the soft surrounding rock of the pile foundation, the different techniques such as consolidation, inserting the steel casing and the original drilling are respectively adopted. Through the data analysis, the feasible new construction technology of drilling pile for the marine soft soil foundation is obtained.