【摘要】 本文报导了K₀固结三轴仪加压装置的研制及试验成果。该装置用光纤维位移传感器控制双筒压力室内的水位,自动或手动对试样加压力,使试样在无侧向变形条件下发生固结,然后在保持侧压力不变或平均压力不变的情况下进行剪切试验。试验操作简便,适于配备在普通三轴仪上使用。对不同种类土样的试验表明,控制试样侧向不变形的灵敏度高,达到了K₀固结三轴剪切试验的要求。K₀固结三轴试验的有效应力强度指标与各向等压固结三轴试验的数值相同或前者比后者略大,排水剪的应力与应变关系曲线二者相差不大,但不排水剪试验相差很大。更多还原

【Abstract】 A loading dsvice for K0-consolidation triaxial apparatus and its test results are reported in this paper. In order to perform specimen consolidation under the condition of zero lateral deformation before shearing, a optical fibre displacfmen transducer is used to control water level in the inner cell by applying pressure to the specimen automatically or manually. This dsvica is convenient to operate and suitable to fit onto common triaxial appratus. The test results of different kind of soil indicate that it has high sensitivity to control lateral deformation and fulfils the requirement of K0-consolidation triaxial apparatus. The values of strength parameters in terms of effective stress obtained from tests with this device are equal to or slightly larger than that with the device of isotropic consolidation, but both of their stress-strain relationship and strength of undrained test are quite different.更多还原