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建筑中对于软土地基的处理方法多种多样,挤密砂石桩是在振动沉管桩机的振动作用下,把套管打入规定的设计深度,套管入土后,挤密了套管周围土体,然后投入砂石,再将砂石排入土中,振动密实成桩,多次循环后就成为砂石桩。桩与桩间土形成复合地基,从而提高地基的承载力和防止砂土振动液化。我国幅员辽阔,地质状况千变万化,目前单一的振动沉管桩机施工挤密砂石桩具有一定的局限性。
Construction methods for the treatment of soft soil varied, compacted sand pile is vibrating sink pile driver under the action of the casing into the specified design depth, casing into the soil, the crowded casing Around the soil, and then put sand, sand and then discharged into the soil, vibrating into a pile, after repeated cycles to become a sand pile. Pile and soil between the piles to form a composite foundation, thereby enhancing the bearing capacity of the foundation and prevent the sand from liquefying. China has a vast territory and ever-changing geological conditions. At present, a single vibrating pipe sink pile construction compaction sand-gravel pile has its own limitations.