岩土力学2009，Vol.30Issue(7)：2043-2048,6.
颗粒破碎及剪胀对钙质砂抗剪强度影响研究
Research on influences of particle breakage and dilatancy on shear strength of calcareous sands
摘要
Abstract
Calcareous sediments generally consist of the remains of marine organism,which tend to crush relatively easily under load, compared to terrigenous materials. Based on the data of triaxial shear tests carried out on calcareous sand taken from the South China Sea, the influences of the particle breakage and dilatancy on shear strength of calcareous sands are discussed and analyzed. The results indicate that the particle breakage and dilantacy have significant effect on the shear strength of calcareous sands. The effect of the dilatancy on the shear strength is more serious than that of the particle breakage under low confining pressure, while with the confining pressure increasing, the effect of the particle breakage increase and that of dilatancy decrease. When the confining pressure attained to some extent, the particle breakage and its effect on shear strength will diminish.关键词
钙质砂/颗粒破碎/剪胀/抗剪强度Key words
calcareous sand/ particle breakage/ dilatancy/ shear strength分类
建筑与水利引用本文复制引用
张家铭,蒋国盛,汪稔..颗粒破碎及剪胀对钙质砂抗剪强度影响研究[J].岩土力学,2009,30(7):2043-2048,6.基金项目
国家自然科学基金资助项目(No. 40272121) （No. 40272121）
科技部批准"十五"南沙群岛及其邻近海区综合调查项目2001年度中央级科研院所社会公益研究专项资金项目(No. 2001DIA50041). （No. 2001DIA50041）
