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振动沉管灌注桩单打代替复打是一种新的施工工艺。它具有比复打桩节约时间,减少投资,质量可靠等优点,在软土地基处理上具有一定的推广价值。本文以云南省对外经贸厅多层车库振动沉管灌注桩基础工程为例予以说明,以利于在一定的适用条件下推广应用。施工场地地层自上而下依次为硬塑亚粘土、可塑粘土、流塑淤泥质粘土、稍密中密粉砂及稍密砾石。砾石层为持力层。
Vibrating immersed cast-in-place pile singles instead of doubles is a new construction process. It has the advantages of saving time, reducing investment, and reliable quality compared to piling piles, and has certain promotion value in soft soil foundation treatment. This article takes the example of the multi-story vibration-sinking cast-in-place pile foundation project of the Yunnan Foreign Economic and Trade Department as an example to facilitate the promotion and application under certain applicable conditions. From top to bottom, the construction site strata are hard plastic sub-clay, plastic clay, flow plastic mud clay, slightly dense medium dense silt and slightly dense gravel. The gravel layer is a bearing layer.