微小应变下堆石料的变形特性

微小应变下堆石料的变形特性 English Version

基金项目: 国家自然科学基金重点资助项目 (596392 50 );;国家教育部跨世纪人才基金资助项目! (教技厅 [1 997] 2 )

State Key Laboratory of Coastal and Offshore Engineering Dalian University of Technology Dalian 116024 China

摘要: 在土工三轴试验中应用一种微小应变测试装置———局部位移计 ,不仅使试验精度提高了一个量级 ,即达到 0 .0 0 1% (10 -5) ,而且能够在一次试验中的同一个试样上准确而连续地量测 10 -6～ 10 -1应变范围内的变形特性。应用这种测试新技术 ,着重研究了堆石料在微小应变下各种变形模量与应变水平或应力水平之间的相关性 ,得出了一些有益的结论
- 局部位移计 /
- 堆石料 /
- 微小应变 /
- 变形模量
Abstract: The local displacement transducer(LDT) represents a latest measurement technique in triaxial test.The LDT can be used to increase the precision of strain to 0.001%(10 -5 ) and to measure the deformation characteristics accurately and continuously in a strain range from less than 0.001% to 1% in a single test.This paper studies the relationships between modulus and strain level or stress level in a small strain range.Some beneficial conclusions are obtained.
- local deformation transducer /
- rockfill /
- small strain /
- deformation modulus