| 宋国文.豫中地区黏土物理力学性质与标贯击数分析[J].安徽建筑大学学报,2021,29(): |
| 豫中地区黏土物理力学性质与标贯击数分析 |
| Analysis of Physical and Mechanical Properties and Standard Penetration Number of Clay in Central Henan |
| 投稿时间：2021-03-15 修订日期：2021-04-27 |
| DOI： |
| 中文关键词: 标准贯入试验 室内土工试验 粉质黏土 |
| 英文关键词: standard penetration test indoor geotechnical test silty clay |
| 基金项目:国家重点研发计划（2016YFC0701500） |
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| 摘要点击次数: 2671 |
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| 中文摘要: |
| 标准贯入试验是一种原位测试方法，在岩土勘察活动中经常使用，来判断土体的物理力学指标。通过室外标准贯入试验和室内土工试验分析了豫中平原地区粉质黏土的部分物理力学指标。运用一元线性回归方程拟合了该地区粉质黏土部分物理力学指标与标准贯入击数之间的线性关系，通过F检验相关性显著。研究表明：豫中平原地区粉质黏土的孔隙比e和液性指数IL与标贯击数存在显著的负向线性相关，压缩模量Es、粘聚力c、内摩擦角φ以及塑性指标IP与标贯击数存在显著的正向线性相关。研究成果可对该地区岩土工程勘察活动与工程建设降低成本，提高工作效率以及建立的线性表达式来预测当地粉质黏土的部分物理力学指标。 |
| 英文摘要: |
| Standard penetration test is a kind of in-situ test method, which is often used in geotechnical investigation activities to judge the physical and mechanical indexes of soil. Based on the data of outdoor standard penetration test and indoor geotechnical test, some physical and mechanical indexes of silty clay in central Henan Plain are analyzed. Linear regression equation was used to fit the linear relationship between some physical and mechanical indexes of silty clay and SPT in this area, and the correlation was significant through F test. The results show that the void ratio e and liquid index IL of silty clay in the central Henan plain have significant negative linear correlation with SPT blow count, while the compressive modulus es, cohesion c, internal friction angle φ and plastic index IP have significant positive linear correlation with SPT blow count. The research results can reduce the cost of geotechnical engineering investigation and construction, improve the work efficiency, and establish a linear expression to predict some physical and mechanical indexes of local silty clay. |
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