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水泥粉喷桩是深层搅拌法加固软土地基的深层,经搅拌使水泥和原土充分拌和,使混和桩体凝结硬化,既提高自身强度,又稳定了桩周围土层,从而使天然的软土地基改变成优质的复合地基,以提高地基的承载能力。泌阳县泌水湖公园第二级橡胶坝工程施工时,坝上游原土地基承载力为90kPa,设计要求地基承载力为160kPa,由于地下水位较高,为了降低造价同时又缩短工期,根据实际情况采用这种粉喷桩加固地基。下面简述该工程粉喷桩施工过程中一些质量控制要点:
Cement powder spray pile is a deep mixing method to reinforce the deep layer of soft soil foundation. The mixture of cement and original soil is fully mixed by stirring to make the mixed pile body harden and harden, which not only enhances its own strength but also stabilizes the soil around the pile so that the natural soft Land base into a high-quality composite foundation to improve the bearing capacity of the foundation. Biyangxuehu Lake Park second rubber dam construction, the upstream dam foundation upstream bearing capacity of 90kPa, the design requirements of the foundation bearing capacity of 160kPa, due to higher groundwater levels, in order to reduce costs and shorten the construction period, according to the actual The situation using this powder-sprayed pile reinforcement foundation. The following briefly describes the construction of the project DJM some of the quality control points: