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在校准室中使用DCP探头测试从难以紧的沙子中建模的亚,在校准室中测试

Dariusz Tymosiak¹, Maria Jolanta Sulewska¹, Wanda Kokoszka²

¹Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 45E Wiejska Street, 15-351 Bialystok, Poland.

Materials (Basel, Switzerland)

|August 14, 2025

概括

轻量级的动态圆探头 (DCP) 有效地评估了堤中的非凝聚性土壤的压缩质量. 一个新的公式将DCP结果与土壤紧缩程度联系起来,有助于施工质量控制.

科学领域:

地质技术工程地质技术工程
土壤力学土壤力学
建筑材料科学建筑材料科学

背景情况:

评估土壤紧缩对于堤的稳定性和性能至关重要.
确定压缩质量的传统方法可能是耗时和劳动密集的.
轻量级动态圆穿透 (DCP) 测试提供了一个潜在的快速现场评估工具.

研究的目的:

评估轻量级动态圆探头 (DCP) 的有效性,以评估浅堤面层 (0.100.80米) 的压缩质量.
为了确定DCP测试结果与对非凝聚性土壤紧缩度 (Is) 的直接测量之间的相关性.

主要方法:

在实验室校准室内 (高度1.10米,直径0.75米) 进行DCP探测和直接紧缩度 (Is) 测量的比较测试.
使用难以紧的沙子 (Sa),具有特定的均性 (Cu = 3.10) 和曲率 (Cc = 0.99) 系数.
使用振动板压缩器分层压缩土壤并收集数据集 (n=68) 的变量,包括深度 (z),密度 (ρ),含水量 (w),干密度 (ρd),Is,PI和DCP吹数 (N10(DCP)).

主要成果:

在压缩度 (Is) 和DCP测试参数 (z,N10(DCP)) 之间建立了统计学上显著的关系.
开发的公式,Is = f (z,N10 (DCP)),证明了DCP在评估堤防紧缩方面的潜力.
该研究证实了DCP的适用性,用于评估堤中非凝聚性土壤的紧缩.

结论:

轻量级的动态圆探头 (DCP) 是评估非凝聚性土壤堤防的压缩质量的可行工具.
建立的经验关系为土壤紧缩的现场质量控制提供了一个实用的方法.
进一步的研究可以在更广泛的土壤类型和场地条件中验证这种方法.

关键词:

在 DCP 测试中使用 DCP 测试.校准室的一个校准室.压缩的程度是 IS 的压缩度.难以紧的难以紧的沙子.

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