南水北调与水利科技Issue(2)：54-58,5.DOI:10.13476/j.cnki.nsbdqk.2014.02.013
潍坊中南部平原地区粉土强度特性试验研究
Research on Silt Intensity in the Plain Area of South-central Weifang
摘要
Abstract
The silt in the plain area of south-central Weifang can be used as the bearing stratum of the foundation for high-rise buildings .Laboratory experiments were conducted to obtain the grading curve of silt ,physical properties of silt ,and the axial de-formation and deviatoric stress of silt under different moisture contents and degrees of compaction .The test results showed that the silt has a good grading to reach a relatively high degree of compaction .According to the yield stress under different water contents which were less than the optimal water content ,the critical point of strain hardening and softening was determined . Water content ,degree of compaction ,and confining pressure were the main influence factors of the shear strength .The fitting e-quation of shear limit state for the regional silt was obtained when the water content was less than the optimal water content , and M(s)(slope) and μ(s)(intercept) were all constants which were independent of water content .关键词
粉土/含水率/压实度/屈服应力/极限状态线Key words
silt/water content/degree of compaction/yield stress/line of limit state分类
建筑与水利引用本文复制引用
邢国起,肖洪天,李大勇..潍坊中南部平原地区粉土强度特性试验研究[J].南水北调与水利科技,2014,(2):54-58,5.基金项目
国家自然科学基金资助项目 （）
