Study of the behavior of an instrumented soil nail wall in Salvador-Brazil

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2022-11-15 DOI:10.28927/sr.2022.076221

André Delmondes Filho, E. Cavalcante, Carlos Cardoso Júnior, Demóstenes Cavalcanti Júnior

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Abstract

This paper aims to analyze the behavior of a soil-nailed excavation located in Salvador, Bahia, Brazil. Numerical stress-strain modeling was conducted, using finite element method. The horizontal displacement profiles obtained for the wall face in the numerical analysis presented a good correlation compared to field instrumentation monitoring with inclinometers. The results showed that the magnitude of the maximum numerical and experimental displacements was lower than the simplified models recommended by international manuals and technical literature. However, the monitoring data was compatible with other cases of instrumented nailed excavations in silt-sandy soil in the city of Salvador. Numerical models also adequately represented the distribution of tensile forces in nails. The maximum tensile forces observed numerically were smaller than those calculated using analytical methods. It was emphasized that the results of field monitoring and numerical models correspond to a stage immediately after the end of the retaining structure execution, not considering the evolution of deformations in long term.

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萨尔瓦多-巴西仪器化土钉墙的性能研究

本文旨在分析一个位于巴西巴伊亚州萨尔瓦多的土钉开挖的行为。采用有限元方法进行了应力-应变数值模拟。与使用测斜仪进行现场仪器监测相比，数值分析中获得的墙面水平位移剖面具有良好的相关性。结果表明，最大数值位移和实验位移的大小低于国际手册和技术文献推荐的简化模型。然而，监测数据与萨尔瓦多市淤泥沙质土壤中仪器钉挖的其他情况相一致。数值模型也充分地表示了钉子中张力的分布。数值观察到的最大拉力小于使用分析方法计算的最大拉力。有人强调，现场监测和数值模型的结果对应于挡土结构施工结束后的一个阶段，没有考虑变形的长期演变。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.