Three-dimensional numerical analysis of large-scale horizontal square anchors in geogrid-reinforced sand

IF 4.7 1区 工程技术 Q1 ENGINEERING, GEOLOGICAL
Sougata Mukherjee, G.L. Sivakumar Babu
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Abstract

This paper presents a comprehensive three-dimensional numerical investigation of horizontal square anchors embedded in geogrid-reinforced sand. Prior experimental studies have demonstrated notable enhancements in anchor uplift capacity when placed below geogrid reinforcement in soil. However, these results are limited to small anchor plates tested in laboratory conditions with over-reinforced sand. In contrast, this study focuses on large field-scale anchors and explores the influence of anchor width, embedment depth, reinforcement size, stiffness, and tensile strength on uplift capacity. The findings reveal that the optimal size for geogrid reinforcement is three times the anchor width. A diminishing improvement in uplift capacity with increasing anchor width was observed. Additionally, deeper anchor embedment reduces the uplift capacity improvement in geogrid-reinforced sand. The geogrid reinforcement is found to be more efficient in the case of shallow anchors placed in loose sand. The major contribution of this paper lies in the response analysis of large anchors and providing a better understanding of the uplift mechanism in geogrid-reinforced sand.

土工格栅加固砂中大型水平方锚的三维数值分析
本文对嵌入土工格栅加固砂中的水平方锚进行了全面的三维数值研究。之前的实验研究表明,当锚杆置于土壤中的土工格栅加固层下方时,其抗拔能力会显著增强。然而,这些结果仅限于在实验室条件下用过度加固的砂土测试的小型锚固板。相比之下,本研究侧重于大型现场锚杆,并探讨了锚杆宽度、嵌入深度、加固尺寸、刚度和抗拉强度对抗拔能力的影响。研究结果表明,土工格栅加固的最佳尺寸是锚杆宽度的三倍。随着锚固宽度的增加,隆升能力的提高幅度也在减小。此外,较深的锚嵌入也会降低土工格栅加固砂土的隆升能力。土工格栅加固在松散砂土中的浅埋锚固中更为有效。本文的主要贡献在于对大型锚杆进行了响应分析,并提供了对土工格栅加固砂土隆升机制的更好理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Geotextiles and Geomembranes
Geotextiles and Geomembranes 地学-地球科学综合
CiteScore
9.50
自引率
21.20%
发文量
111
审稿时长
59 days
期刊介绍: The range of products and their applications has expanded rapidly over the last decade with geotextiles and geomembranes being specified world wide. This rapid growth is paralleled by a virtual explosion of technology. Current reference books and even manufacturers' sponsored publications tend to date very quickly and the need for a vehicle to bring together and discuss the growing body of technology now available has become evident. Geotextiles and Geomembranes fills this need and provides a forum for the dissemination of information amongst research workers, designers, users and manufacturers. By providing a growing fund of information the journal increases general awareness, prompts further research and assists in the establishment of international codes and regulations.
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