一、振动灌注桩技术的主要优点振动灌注桩不受持力层起伏的限制,以最终贯入度控制桩长。在丘陵湖区软土饱和地基的中深基础和深基础采用振动灌注桩,技术经济效益格外突出。在地下水位较高的饱和软土仍可正常施工,泥和水不会涌入桩管,从而确保混凝土质量,断桩、缩颈和吊脚等缺陷很少出现。与预制桩相比,经济指标如表1所示(株洲地区)。 1. The main advantages of vibratory cast-in-place pile technology Vibratory cast-in-place piles are not limited by the fluctuation of the bearing layer and the length of the pile is controlled by the final penetration. Vibrating cast-in-situ piles are used in deep foundations and deep foundations of soft soil saturated foundations in hilly lake areas, and the technical and economic benefits are particularly prominent. Saturated soft soil with high groundwater level can still be used normally, mud and water will not be poured into the pile pipe, so as to ensure the quality of concrete, and defects such as broken piles, necking and hanging feet are rarely found. Compared with prefabricated piles, the economic indicators are shown in Table 1 (Zhuzhou area).