摘要
由反射波法检测CFG桩(桩帽)完整性,一些桩的反射波曲线为正弦波衰减、周期大、无桩底反射信号,经分析和验证,原因是施工桩时,造成了桩浅部垂向裂纹、水平断裂、桩帽与桩没有连结成一体。为确保CFG桩(桩帽)质量完整,采用CFG桩帽混凝土完全湿揭法施工,效果良好。
Through detecting CFG pile （pile cap） integrity using reflection method, it is shown that reflection curve of some piles is featured of sine wave attenuation, long period and no reflected signal from pile bottom, which are caused by pile shadow vertical crack, horizontal crack, separation between pile cap and pile body during construction through analysis and verification. In order to ensure CFG pile （pile cap ） integrity, concrete completely wet uncovering process shall be applied for CFG pile cap with good effect.
出处
《路基工程》
2011年第1期155-158,共4页
Subgrade Engineering
关键词
CFG桩
桩身(桩帽)完整性
施工措施
混凝土完全湿揭法
质量控制
cement-flyash-gravel pile （ CFG pile） completely wet uncovering process
quality control
pile （pile cap） integrity
construction measures
concrete
