大豆堆体变模量的测定与分析

Measurement and Analysis on Bulk Stain Modulus of Soybean Pile

使用TSZ-6A型应变控制式三轴仪对不同围压(20～240 kPa)、不同含水率(12.1%,14.0%,15.7%,17.1%w.b)的黑龙江省春大豆堆的体变模量进行了测定,并分析了围压与含水率对大豆堆体变模量的影响。试验结果表明:对含水率为12.1%～17.1%w.b、围压为20～240 kPa的大豆堆,其体变模量范围为223.7～813.0 kPa。相同含水率的大豆堆的体变模量随着围压(20～240 kPa)的增大而增大;同一围压下,大豆堆体变模量随着含水率(12.1%～17.1%w.b)的增大而减小。

In this paper, bulk stain modulus of soybean pile of Heilongjiang province （moisture contents are 12.1% ,14.0% ,15.7% and 17.1% w. b and confining pressures are from 20 kPa to 240 kPa. ）are measured by the strain control type three triaxial apparatus. The influences of the confining pressure and the moisture content on the bulk stain modulus of soybean pile are analyzed. The results show that the bulk stain modulus of soybean pile ranged from 223.7 kPa to 813.0 kPa in the moisture contents range of 12.1% ～ 17.1% w. b and the confining pressure range of 20 ～ 240 kPa. The results also show that as confining pressure （ 20 ～ 240 kPa） increases, the bulk strain mod- ulus of soybean pile increase in the same moisture content; and as moisture content of soybean pile（ 12.1% ～ 17.1% w. b） increases, the bulk strain modulus of soybean pile decrease under the same confining pressure.