摘要
通过对裂隙性黄土样的侧壁标记网格,量测、描述了不同含水量、不同裂隙空间形态的土样在不同试验围压下经过三轴压缩后的变形及其特征,总结了其变形规律。试验结果显示,裂隙性黄土的整体变形分为轴向变形、弯曲变形、旋转变形和扭转变形4种方式,其变形方式与土样的含水量、原裂隙的空间形态及性质、试验围压等因素密切相关,土样的变形方式决定了土样的破坏方式。
After triaxial compression to fissured loess samples with different moisture content and different angle and position of fissure in samples under different confining pressures, deformations are measured by means of mesh lines marked in side face of fissured loess samples. The deformation characteristics are described and deformation rules are generalized. Results of tests show that there are 4 types of deformation which are axial deformation, bending deformation, rotation deformation and torsion deformation. Deformation types are related to such actors as moisture content, angle and position of fissure in samples and confining pressures of tests. And the deformation types have direct influence on failure modes of fissured loess.
出处
《公路》
北大核心
2006年第8期1-4,共4页
Highway
基金
国家自然科学基金重点项目(40534021)
交通部西部交通建设科技项目(200431881211)
国土资源大调查项目(200411300025)
关键词
三轴压缩
裂隙性黄土
变形量测
变形特征
变形规律
triaxial compressions fissured loess
deformation rule deformation measuring
deformation characteristics
