摘要
天然地基的含水率高达48．2％～64．2％的流塑状软土地基，选择采用粉喷桩进行加固处理，通过选择合理的加固方法和合适的施工工艺控制参数，使得加固后的粉喷桩外观整齐，桩身灰土均匀，未出现桩身倾斜和断桩等不良现象。试验结果表明：复合地基承载力特征值fspk≥150kPa，是加固前天然地基承载力的2．50倍以上；压缩模量是加固前天然地基的7倍以上，大大地减少了建筑物的沉降量和不均匀沉降量，达到了预期的效果，采用粉喷桩处理流塑状的软土地基是可行的。
Water natural foundation rate is as high as 48. 2% to 64. 2% of the flowing plastic soft soil founda- tion, selected by spray powder pile reinforcement, the reinforcement method and construction technology of suitable control parameters by choosing the reasonable, the pile reinforcement of the neat appearance, the pile soil is not uniform, the obliquity of the pile and broken pile and other undesirable phenomena. The test re- sults show that. the value of fspk is more than or equal to the bearing capacity of the 150kPa composite foun- dation, bearing capacity is strengthened the natural foundation for more than 2. 50 timesl the compression modulus is 7 times more than before the reinforcement of natural foundation, greatly reducing the ground set- tlement and uneven settlement, to achieve the desired results, the method of powder injection is feasible. Pile in soft soil foundation treatment of plastic flow of the.
出处
《安徽水利水电职业技术学院学报》
2016年第2期6-10,共5页
Journal of Anhui Technical College of Water Resources and Hydroelectric Power
关键词
软土地基
粉喷桩
承载力特征值
控制参数
效果分析
soft foundation powder jet pile
characteristic value of bearing capacity
controlling parameter
effect analysis
