水泥粉喷桩在河床地基处理中的应用

Application of Cement Dry Jet Mixing Pile in River Bed Foundation Treatment

本文根据水泥粉喷桩复合地基主固结沉降理论,得到灯塔灌区与大伙房水库单桩沉降计算Q-s图与单桩复合地基沉降计算p-s图。单桩竖向抗压静载试验与单桩复合地基静载试验表明:灯塔灌区水泥粉喷桩处理地基效果良好;而大伙房水库则由于地质复杂导致检测结果与沉降计算出现偏差。不同地质条件对不同桩基承载力计算结果差异性较大,希望本文为相关研究提供参考。

In the paper,single pile settlement calculation Q-s figure and single pile composite foundation settlement p-s figure in Dengta irrigation area and Dahuofang reservoir are obtained according to primary consolidation settlement theory of cement dry jet mixing pile composite foundation.Single pile vertical compressive static load test and single pile composite foundation static load test indicate that cement dry jet mixing pile treatment foundation has excellent effect in Dengta irrigation area and test results and settlement calculation are deviated due to geological complexity in Dahuofang Reservoir.Different geological conditions have decisive influence on pile foundation.It is expected that the paper can provide reference for related study.