摘要
通过现场试验,对CFG桩桩帽在公路软土地基处理工程中的作用效应进行了研究。分别通过单桩复合地基承载力试验与路堤载板试验,测试不同直径桩帽的单桩承载力、桩帽对桩顶垫层的刺入量等。结果表明,桩帽的存在能显著的减小复合地基的沉降,且对于一定桩间距的CFG桩复合地基,存在一个最佳的桩帽尺寸。在此基础上,提出一种能考虑桩帽效应的CFG桩复合地基沉降计算方法。
The bearing capacity and penetration displacement of CFG pile with variable pile cap size was investigated in field sites. The results show that the pile cap could reduce settlement of the composite subgrade eonsiderly, and there is a optical ＂cap size＂ for the composite subgrade with a certain distance. A settlement calculating method was presented witch could consider the pile cap effect.
出处
《福建建筑》
2007年第11期60-62,共3页
Fujian Architecture & Construction
关键词
CFG桩
桩帽
现场试验
沉降计算
CFG pile pile cap in -situ test settlement calculation
