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在粉喷桩复合地基设计时,粉喷桩承载力一般按《建筑地基处理技术规范》(JGJ7991) 中的经验公式计算,在邯郸市区应用时误差较大。本文通过7 个工程的静力触探试验指标一比贯入阻力Ps 与粉喷桩单桩载荷试验进行对比分析,得到了用Ps 确定粉喷桩单桩承载力Rdk 的经验公式,经在多个工程应用,并经载荷试验验证,证明该方法具有较高的精度和实用性。
In the design of DJM composite foundation, the bearing capacity of DJM pile is generally calculated according to the empirical formula in Technical Code for Construction of Foundation of Foundation (JGJ7991), and the error in application is large in Handan urban area. In this paper, through the comparison of the penetration penetration resistance Ps and the single-pile load test of DJM pile by seven projects, the empirical formula of determining the bearing capacity Rdk of single pile by DJM is obtained. A project application, and the load test to verify that the method has high accuracy and practicality.