土工格栅加筋集料的离散单元建模

IF 0.3 Q4 ENGINEERING, GEOLOGICAL
G. McDowell, O. Harireche, H. Konietzky, S. Brown, N. Thom
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引用次数: 242

摘要

建立了土工格栅加筋镇流器的离散单元模型。通过模拟大型三轴试验,并与现有数据进行比较,首先建立了一个非加固压载物模型,并对其进行了评估。通过将许多小球粘合在一起形成所需的几何形状,建立了土工格栅模型,并通过模拟标准试验进行了评估。采用离散元法(DEM)模拟拉拔试验,并与试验数据进行比较,对压舱物与土工格栅的相互作用进行了建模。DEM模拟已被证明可以很好地预测峰值动员阻力和动员峰值拔出力所需的位移。本文还研究了土工格栅孔径与压载物粒径之比对拉出阻力的影响。除了循环三轴试验外,还通过模拟大型拉拔试验对土工格栅的影响区进行了检验。这个方法很有前途,因为……
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Discrete element modelling of geogrid-reinforced aggregates
A discrete element model has been developed for geogrid-reinforced ballast. A model for unreinforced ballast has first been developed and evaluated using simulations of large-scale triaxial experiments and comparing with available data. A model for the geogrid has also been developed by bonding many small balls together to form the desired geometry and evaluated by simulating standard tests. The discrete element method (DEM) has then been used to model the interaction between ballast and geogrid by simulating pull-out tests and comparing with experimental data. The DEM simulations have been shown to predict well the peak mobilised resistance and the displacement necessary to mobilise peak pull-out force. The effect of the ratio of the geogrid aperture size to ballast particle diameter on pull-out resistance has also been investigated. The zone of influence of the geogrid has also been examined by simulating larger-scale pull-out tests in addition to cyclic triaxial tests. The method holds much promise as ...
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来源期刊
Geotechnical Engineering
Geotechnical Engineering ENGINEERING, GEOLOGICAL-
CiteScore
0.50
自引率
0.00%
发文量
0
期刊介绍: The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.
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