Evaluation of the effect of constant and non-constant Poisson’s ratio on reinforcement load of reinforced soil walls

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2023-12-21 DOI:10.1016/j.sandf.2023.101409

Mauricio Ehrlich , Seyed Hamed Mirmoradi , Gustavo Fonseca Silva , Gabriel Nascimento

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引用次数: 0

Abstract

This study analytically and numerically investigates the impact of constant and non-constant Poisson’s ratio on the mobilized maximum load in the reinforcements, T_max, of reinforced soil walls with vertical facing under working stress conditions. This assessment is carried out considering different controlling factors including reinforcement stiffness, wall height, backfill friction angle, and compaction-induced stress. The analytical procedure and the numerical model are validated against data from an instrumented, large-scale, geosynthetic-reinforced soil wall under working stress conditions. Considering the key factors evaluated in the current study, the results show that the impact of the reinforcement stiffness is dominant over the approach used to consider Poisson’s ratio. A maximum difference of about 20% was obtained between the values of T_max calculated using constant and variable Poisson’s ratios. This implies that, from a practical standpoint, it may be appropriate to adopt a simpler approach that utilizes a constant Poisson's ratio for the determination of T_max under operational conditions.

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评估恒定和非恒定泊松比对加固土墙加固荷载的影响

本研究通过分析和数值方法研究了在工作应力条件下，恒定和非恒定泊松比对竖向加筋土墙钢筋中的最大动员荷载 Tmax 的影响。该评估考虑了不同的控制因素，包括钢筋刚度、墙体高度、回填摩擦角和压实引起的应力。在工作应力条件下，分析程序和数字模型通过仪器测量的大型土工合成材料加固土墙的数据进行了验证。考虑到当前研究中评估的关键因素，结果表明加固刚度的影响比考虑泊松比的方法更重要。使用恒定泊松比和可变泊松比计算的 Tmax 值之间的最大差异约为 20%。这意味着，从实用的角度来看，采用一种更简单的方法，即利用恒定泊松比来确定工作条件下的 Tmax 可能是合适的。

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

Soils and Foundations 工程技术-地球科学综合

CiteScore

6.40

自引率

8.10%

发文量

审稿时长

5 months

期刊介绍： Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.