摘要
采用DDS-70微机控制电磁式振动三轴仪和TSZ-2全自动应变控制式三轴仪,对扬州饱和砂土进行了试验,研究了细粒含量为21%,25%,29%时,饱和砂土的静力不排水抗剪强度及在高振次循环下的动强度,对比分析了静强度和动强度之间的应变速率系数,指出当细粒含量为25%时,饱和砂土的强度减幅最大,应变速率系数最低,最容易发生液化。
This paper made test using DDS-70 microcomputer control electromagnetic vibration three-axis apparatus and TSZ-2 automatic strain controlled three-axis apparatus to Yangzhou saturated sand,researched the strength of saturated sand static force un-drained shear strength under this vibration loops with fine particle content were 21%,25%,29%,contrasted and analyzed the strain rate coefficient between static strength and dynamic strength,pointed out that when the fine content was 25%,the strength of saturated sand declined biggest,the strain rate coefficient minimum,the most prone to liquefaction.
出处
《山西建筑》
2016年第2期50-52,共3页
Shanxi Architecture
基金
国家自然科学基金资助项目(项目编号:51278446)
青年基金(项目编号:50908198)
关键词
饱和砂土
动强度
静强度
应变速率系数
saturated sandy soil
dynamic strength
static strength
strain rate coefficient
