摘要
直剪试验因受仪器结构的限制 ,只能以剪切速率的快慢来控制试样的排水条件。通过宁波大榭 34组软土原状土样的室内试验分析 ,剪切速率 0 8mm min和 2 4mm min所得的直剪固结快剪强度 ,前者比后者内摩擦角平均大近一倍。对照三轴固结不排水试验成果的分析 ,认为 2 4mm min速率对本软土较适宜。
Owing to the limitation of the equipment structure in consolidated quick direct shear test, the drainage conditions can only be contro lled with the change of the shear rate. Through the laboratory testing analysis on the thirty-four groups undisturbed samples of soft clay from Daxie in Ningbo city, compar ing the shear strength at the shear rate 0 8mm/min and that at the rate 2 4mm/ min, the internal friction angle of the former is nearly the two times of the la tter's.Compared the results from the triaxial consolidated undrained tests, it i s pointed out that the rate 2 4mm/min is more favorable to the soft clay.
出处
《工程勘察》
CSCD
北大核心
2005年第2期37-39,共3页
Geotechnical Investigation & Surveying
关键词
剪切速率
固结快剪
抗剪强度
软土
shear rate
consolidated quick shear
shear strength
soft clay
