Rapid estimation of resilient modulus of subgrade soils using performance-related soil properties
Rapid estimation of resilient modulus of subgrade soils using performance-related soil properties
复制标题
利用与性能相关的土壤特性快速估算路基土壤的回弹模量
DOI：
10.1080/10298436.2019.1643022
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发表时间：
2019-07
影响因子：
3.8
通讯作者：
Feng Li
中科院分区：
文献类型：
--
作者：
Junhui Zhang;Junhui Peng;Ling Zeng;Jue Li;Feng Li
摘要本研究旨在发展一种有效且准确的方法来估算路基土的回弹模量。首先，提出了一个新的回弹模量模型，该模型考虑了应力和湿度的相关性。其次，为了方便、准确地确定土水特征曲线模型参数和回弹模量模型参数，建立了相应的预测模型。为了更好地反映路基土的含水量特性，在模型中加入了基质吸力。通过压力板试验测定基质吸力，并利用土-水特征曲线（SWCC）确定任意含水率下的基质吸力值。为了建立土的水特征曲线和回弹模量模型参数的预测模型，对22个土样进行了室内试验和多元回归分析。一系列性能相关的土壤特性进行了测量，并用于开发的系数预测模型。利用与性能相关的土壤性质开发的系数预测模型具有较高的R平方值，并通过比较弹性模量的测量值和预测值进行了验证。因此，在获得土的基本物理性质的基础上，可以预测路基土在任意基质吸力和应力状态下的回弹模量。
ABSTRACT This study aims at developing an efficient and accurate methodology to estimate the resilient modulus of subgrade soils. First, a new resilient modulus model incorporating stress dependence and moisture dependence was proposed. Second, prediction models were developed to conveniently and accurately determine model parameters of SWCC and resilient modulus model. In order to characterise the moisture dependence of subgrade soils, the matric suction was added into the proposed model. The matric suction was measured by the pressure plate test and the soil-water characteristic curve (SWCC) was used to determine the matric suction value at any given moisture contents. In order to develop prediction models for model parameters of SWCC and resilient modulus model, the laboratory experiments and multiple regression analysis were conducted on 22 soil samples. A series of performance-related soil properties were measured and used to develop the coefficients prediction models. The developed coefficients prediction models using the performance-related soil properties have high R-squared values and were validated by comparing the measured and predicted values of resilient modulus. Therefore, when the basic physical properties of soils were obtained, the resilient modulus can be predicted for the subgrade soils at any given matric suctions and stress states.
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DOI：
10.1007/s10064-014-0664-y
发表时间：
2015-08
影响因子：
4.2
作者：
B. Dolinar
通讯作者：
B. Dolinar
公路路堤中与建筑相关的建筑和拆除废物的利用：实验室和现场评估
影响因子：
11.1
作者：
Junhui Zhang;Fan Gu;Yuqing Zhang
通讯作者：
Yuqing Zhang
DOI：
10.1061/(asce)0733-947x(2008)134:1(34
发表时间：
2008-01-01
影响因子：
--
作者：
Liang, Robert Y.;Rabab'ah, Samer;Khasawneh, Mohammad
通讯作者：
Khasawneh, Mohammad
DOI：
10.1061/(asce)mt.1943-5533.0001147
发表时间：
2015-06-01
影响因子：
3.2
作者：
Gu, Fan;Sahin, Hakan;Lytton, Robert L.
通讯作者：
Lytton, Robert L.
影响因子：
3.2
作者：
Sajib Saha;Fan Gu;Xue Luo;R. Lytton
通讯作者：
Sajib Saha;Fan Gu;Xue Luo;R. Lytton