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Updated: Sep 10, 2025
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A Bending Test for Determining the Atterberg Plastic Limit in Soils
Published on: June 28, 2016
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基于土壤-混凝土接口测试和平面扩展仪测试的逆转负荷转移曲线的制定
1Faculty of Civil and Environmental Engineering, Department of Geotechnical and Hydraulic Engineering, Gdańsk University of Technology (GUT), 11/12 Gabriela Narutowicza Street, 80-233 Gdańsk, Poland.
Materials (Basel, Switzerland)
|August 28, 2025
概括
这项研究提出了一种新的宽度测试 (DMT) 方法,用于评估土壤和堆的相互作用,从而改善在软土壤中逆转负荷下螺丝移位堆的预测.
科学领域:
- 地质工程
- 土壤力学
- 基础设计
背景情况:
- 目前的堆土相互作用分析通常依赖于梅纳德压力测试 (PMT) 数据.
- 基于扩展测试 (DMT) 的堆设计转移功能尚未得到充分发展.
- 在反向负载下准确预测堆行为至关重要,但经常被忽视.
研究的目的:
- 引入和验证一种新方法,仅使用扩展测试 (DMT) 结果进行堆积土壤相互作用的评估.
- 开发用于在反向负载下计算控制模块柱 (CMC) 的单元轴摩擦的转移函数.
- 为基于PMT和现有的基于CPTU的堆设计提供实用和准确的替代方法.
主要方法:
- 使用的扩展测试 (DMT) 推导土壤参数用于堆设计.
- 在波兰维斯拉沼泽地安装并进行负载测试的控制模块柱 (CMC).
- 在实验室进行直接切割试验,模拟土壤-混凝土接口的逆转负荷.
主要成果:
- 提出的基于DMT的方法显示出更好的适应当地土壤条件.
- 该模型提供了可靠的土壤堆性能预测,特别是在反向负荷下.
- 在初始装载时达到与CPT 2012相似的最终承载能力,在反向装载时达到更好的一致性.
结论:
- 基于DMT的新方法为评估土相互作用提供了坚实的框架,特别是用于逆转加载场景.
- 这种方法通过利用易于获得的DMT数据来提高软土壤的堆设计能力.
- 这项研究解决了目前地质工程实践中分析复杂负载条件的重大缺陷.
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