摘要
对软土小应变三轴测试方法进行了整理,对霍尔效应局部位移传感器、LVDT位移传感器、压电陶瓷弯曲元、共振柱仪等小应变刚度测试手段进行了梳理和总结。并利用安装有霍尔效应传感器的三轴仪对上海软土进行了试验,探讨霍尔效应传感器对于测试土体小应变特性的有效性,获得霍尔效应传感器能够得到土体在0.01%~0.1%小应变范围内的弹性模量的结论,并建议今后结合运用LVDT传感器和弯曲元进一步测试土体在应变0.001%~0.01%范围内的特性。
The methods of small-strain triaxial tests on soft clay are collated and summarized, including those using Hall-effect sensors, LVDT, bender elements and resonant columns. To discuss the effectiveness of the Hall-effect sensors on getting clay property in small strain, the triaxial tests with the Hall-effect sensors are performed on Shanghai soft clay. A conclusion is drawn that the elastic modulus of clay in small strain(0.01%~0.1%) can be measured by using the Hall-effect sensors. Finally, it is advised that the LVDT and bender elements should be applied in measuring clay property in smaller strain(0.001%~ 0.01%).
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2015年第S2期37-40,共4页
Chinese Journal of Geotechnical Engineering
