复杂地质条件下CFG桩质量控制探讨

Discussion on the Quality Control of CFG Pile Under Complicated Geological Conditions

在复杂场地条件下,不均匀地质现象十分常见。因此,GB/T 50783—2012《复合地基技术规范》[1]规定,对淤泥、淤泥质土或地基应按地区经验或现场试验确定CFG桩的适用性。论文提供了一个工程实例,通过现场试桩发现岩土工程地质条件与原勘察报告之间的差异,并由此调整设计方案,通过提高复合地基的置换率来确保工程安全,对类似工程具有较好的参考价值。

Under complicated site conditions,uneven geological phenomenon is very common.Therefore,GB/T 50783—2012"Technical Code for Composite Foundation"[1]stipulates that the applicability of CFG pile should be determined according to regional experience or field test for silt,silty soil or foundation.This paper provides a project example.The project found the difference between the geotechnical project geological conditions and the original survey report through field pile test,and adjusted the design plan accordingly,and ensured the safety of the project by increasing the replacement rate of the composite foundation,which has good reference value for similar projects.