摘要
采用振动沉管碎石桩对2个大型原油罐的沿海软弱地基进行了处理。结果表明：碎石桩对砂质粘性土层的压缩性降低较为显著,而对粉质黏土层的压缩性降低作用不大;复合地基的桩土应力比在2-3之间变化;在碎石桩处理深度范围内,处理后桩间土的标贯击数可提高至原天然土层的1.5倍以上;处理后的复合地基承载力特征值较天然地基提高2.3倍以上。
The soft foundation of two oil tank was treated by vibration sinking gravel piles.The results show that the compression of sandy viscous soil decreased significantly but the effect was not noticeable for silt clay.In addition,the pile-soil stress ratio of composite foundation varied between the range of 2-3.The SPT blow count of soil between piles after processing rose to more than 1.5 times of natural clay and the characteristic value of composite foundation bearing capacity increased by more than 2.3 times.
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2010年第2期119-122,共4页
Journal of Hebei Agricultural University
关键词
碎石桩
软弱地基
加固效果
gravel pile
soft foundation
strengthening effect
