摘要
引入土层剖面随机场模型 ,把土性参数的点变异性和空间变异性联系起来。利用上海地区 1 7个典型场地的直固快剪试验资料的统计结果 ,提出土层抗剪强度指标点变异系数的置信区间 ,建议在可靠度分析中使用置信上限估计值并考虑空间平均后的折减效应。
Point variability and spatial variability of soil property parameters are associated by means of stochastic field model of soil profile. Confidence intervals of point variability factors of shear strength indices in soil layers are proposed based on the statistical results of direct shear tests in 17 typical sites in Shanghai district. The upper bounds of confidence intervals are suggested to be used for reliability analysis and reduction after spatial average should be considered.
出处
《工程勘察》
CSCD
北大核心
2000年第5期1-3,8,共4页
Geotechnical Investigation & Surveying
关键词
软土
抗剪强度
相关距离
空间变异性
soft soil
shear strength
relevant space
spatial variability
