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对中等细粒度土壤的有效垂直产应力确定方法的比较
Bartłomiej Szczepan Olek1, Magdalena Moskal2
1Faculty of Civil Engineering, Cracow University of Technology, Cracow, Poland. bartlomiej.olek@pk.edu.pl.
Scientific reports
|January 3, 2024
概括
这项研究比较了12种方法来确定细粒度土壤中有效的垂直产力压力. 基于工作方法和卡萨格兰德的方法.
科学领域:
- 地质技术工程 地质技术工程
- 土壤力学 土壤力学
- 材料科学 是一种材料科学.
背景情况:
- 有效的垂直产量应力 (σ'xy) 对于理解微粒土壤在负荷下的行为至关重要.
- 这个参数在构成模型中为结算预测和压力历史评估提供信息.
- 土壤的行为在加载期间随着可回收和不可回收的应变而变化,受产量压力的影响.
研究的目的:
- 在统计上比较十二种不同的方法来确定有效的垂直收益应力 (σ'xy).
- 评估不同产量压力确定技术之间的一致性和关联.
- 确定可靠的方法来分析细粒度土壤的机械性能.
主要方法:
- 在25个不同的细粒度土壤样本上进行了 oedometric 压缩测试.
- 进行了两阶段的统计分析,以比较十二种方法:卡萨格兰德 (CM),帕切科·席尔瓦 (PSM),巴特菲尔德 (BTM),奥卡瓦 (OIM),奥尼图卡 (ONM),布恩 (BM),贝克 (WM),莫林 (WPUVSM),王与 (DSEM),塔维纳斯 (SEM),塞诺尔 (SLSEM) 和詹布 (JM).
- 分析了获得的有效垂直收益应力 (σ'xy) 值之间的差异和关联.
主要成果:
- 基于工作方法 (WM,WPUVSM,DSEM) 和卡萨格兰德 (CM) 的方法产生了可比的有效垂直收益应力 (σ'xy) 值.
- 与Boone (BM) 和Janbu (JM) 相比,双对数图形方法 (BTM,OIM,ONM) 产生了略高或较低的有效垂直收益应力 (σ'xy) 值.
- 其他方法表现出中高的可变性,对程序干扰的敏感性.
结论:
- 工作方法和卡萨格兰德方法在细粒度土壤中为有效的垂直产应力 (σ'xy) 提供了一致的结果.
- 双对数图表方法显示中度一致,而其他技术显示出显著的变化.
- 精心选择有效的垂直产量应力 (σ'xy) 确定方法对于准确的土壤力学分析至关重要.
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