粉喷桩桩间土强度提高的试验研究  

Experimental Study on Increasing the Strength of the Soil Around DJM Piles

作　　者：袁亦敏 柳家海 周洎锟 

机构地区：[1]常州市建设工程施工图设计审查中心,江苏常州213002 [2]常州市基础工程公司,江苏常州213017

出　　处：《常州工学院学报》2016年第3期6-9,共4页Journal of Changzhou Institute of Technology

摘　　要：根据《建筑地基处理技术规范》,粉喷桩复合地基桩间土的承载力特征值可取天然地基的承载力特征值。实践证明,对常规的粉喷桩施工工艺加以改进,其桩间土强度与天然地基相比有明显提高,且时效性增长。因此,采用处理后的桩间土强度指标进行粉喷桩复合地基承载力的计算是可行的。According to Technical Code for Ground Treatment of Buildings, for composite foundation with dry jet mixing （DJM） piles, the characteristic value of bearing capacity of soil around piles are the same with that of the natural foundation. It is proven that the strength of the soil around DJM piles increases considerably and lasts longer when the improved construction process is applied. Therefore, it is feasible to take the strength of the soil around DJM piles after treatment in calculating the bearing capacity of DJM pile composite foundation.

关 键 词：粉喷桩复合地基 桩间土强度 时效性增长 

分 类 号：TU472[建筑科学—结构工程]