Retention performance of woven geotextiles subjected to cyclic-flow conditions
Retention performance of woven geotextiles subjected to cyclic-flow conditions
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DOI：
10.1680/gein.12.00009
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发表时间：
2012-06
影响因子：
4.5
通讯作者：
M. Khachan;S. Bhatia;J. L. Smith
中科院分区：
文献类型：
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作者：
M. Khachan;S. Bhatia;J. L. Smith
摘要：机织土工布广泛应用于土工、水利和环境领域。根据应用，土工织物过滤器可以经受单向、双向或循环流动条件，随着时间的推移，循环流动在两个方向上重复发生。选择合适的土工织物过滤器至关重要，特别是在循环流动条件下。循环流动条件可迅速导致细土颗粒的过度损失和土壤-土工织物系统的失效。虽然这些条件经常遇到，有限的工作已经完成，以评估在循环流动条件下的土工织物的保留行为。在这项研究中，九种不同的编织土工织物与五种不同的土壤在循环流动条件下的保留性能进行了建模，使用双向流体动力学过滤试验（BHFT）。根据研究结果，提出了编织土工格栅的AOS/d85为1.62的保持准则。
ABSTRACT: Woven geotextiles are widely used as filters in geotechnical, hydraulic, and environmental applications. Depending on the application, geotextile filters can be subjected to uni-directional, bi-directional, or cyclic-flow conditions, with cyclic flow occurring in two directions repeatedly over time. The selection of a suitable geotextile filter is of critical importance, particularly for cyclic-flow conditions. Cyclic-flow conditions can rapidly lead to an excessive loss of fine soil particles and failure of a soil–geotextile system. Although these conditions are frequently encountered, limited work has been done to evaluate the retention behavior of geotextiles under cyclic-flow conditions. In this study, the retention performance of nine different woven geotextiles with five different soils under cyclic-flow conditions was modeled using a bi-directional hydrodynamic filtration test (BHFT). Based on the results of this research, a retention criterion of AOS/d85 of 1.62 is proposed for woven geo...