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阐述了桩端后压浆可提高桩基承载力的机理。介绍了苏通大桥一期试桩桩端后压浆施工工艺。通过压浆前后试验测试结果对比 ,分析了大直径桩端后压浆桩的承载特性 ,说明桩端后压浆技术的有效性 ,得出了一些有益的结论 ,为钻孔灌注桩桩端后压浆的设计、施工提供参考
The mechanism of post pile grouting can improve the bearing capacity of pile foundation. The construction technology of post grouting in the first test section of Sutong Bridge was introduced. Through the comparison of the test results before and after grouting, the bearing characteristics of large diameter post-grouting pile are analyzed, the effectiveness of post-grouting technology is demonstrated, and some useful conclusions are obtained. Grouting design, construction provide a reference