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Analysis of reinforced retaining wall failure based on reinforcement length
International Journal of Geo-Engineering Pub Date : 2021-05-02 , DOI: 10.1186/s40703-021-00143-6
Suk -Min Kong , Dong-Wook Oh , So-Yeon Lee , Hyuk-Sang Jung , Yong-Joo Lee

Reinforced retaining walls are structures constructed horizontally to resist earth pressure by leveraging the frictional force imparted by the backfill. Reinforcements are employed because they exhibit excellent safety and economic efficiency. However, insufficient reinforcement can lead to collapse, and excessive reinforcement reduces economic efficiency. Therefore, it is important to select the appropriate type, length, and spacing of reinforcements. However, in actual sites, although the stress and fracture mechanisms in the straight and curved sections of reinforced soil retaining walls differ, the same amount of reinforcements are typically installed. Such an approach can lead to wall collapse or reduce economic feasibility. Therefore, in this study, the behaviours of straight and curved sections fortified with reinforcements of various lengths (1, 3, 5, and 7 m) are predicted through a three-dimensional numerical analysis. The retaining walls are of the same height, but the reinforcement variations in the aforementioned sections influence the wall behaviour differently. Based on the results, the optimum reinforcement lengths for the straight and curved parts were selected. By installing reinforcements of different lengths in these sections, the maximum reinforcing effect with minimum reinforcement was derived. This study further found that the curved section of the wall required more reinforcements, and the reinforcement lengths for the curved and straight sections should be separately optimized.



中文翻译:

基于加筋长度的加筋挡土墙破坏分析

加强挡土墙是水平构造的结构,可通过利用回填物施加的摩擦力来抵抗土压力。使用增强材料是因为它们具有出色的安全性和经济效益。但是,加固不足会导致坍塌,而过多的加固会降低经济效率。因此,选择合适的钢筋类型,长度和间距很重要。但是,在实际场所中,尽管加筋土挡土墙的直线和弯曲部分的应力和断裂机理不同,但通常会安装相同数量的加固件。这种方法可能导致墙体倒塌或降低经济可行性。因此,在这项研究中 通过三维数值分析,预测了用各​​种长度(1、3、5和7 m)加固的直线段和弯曲段的行为。挡土墙的高度相同,但是上述部分中的钢筋变化对墙体性能的影响不同。根据结果​​,为直线和弯曲部分选择了最佳的钢筋长度。通过在这些部分中安装不同长度的钢筋,可以得到具有最小钢筋的最大钢筋效果。这项研究进一步发现,墙的弯曲部分需要更多的钢筋,弯曲和笔直部分的钢筋长度应分别优化。挡土墙的高度相同,但是上述部分中的钢筋变化对墙体性能的影响不同。根据结果​​,为直线和弯曲部分选择了最佳的钢筋长度。通过在这些部分中安装不同长度的钢筋,可以得到具有最小钢筋的最大钢筋效果。这项研究进一步发现,墙的弯曲部分需要更多的钢筋,弯曲和笔直部分的钢筋长度应分别优化。挡土墙的高度相同,但是上述部分中的钢筋变化对墙体性能的影响不同。根据结果​​,为直线和弯曲部分选择了最佳的钢筋长度。通过在这些部分中安装不同长度的钢筋,可以得到具有最小钢筋的最大钢筋效果。这项研究进一步发现,墙的弯曲部分需要更多的钢筋,弯曲和笔直部分的钢筋长度应分别优化。通过在这些部分中安装不同长度的钢筋,可以得到具有最小钢筋的最大钢筋效果。这项研究进一步发现,墙的弯曲部分需要更多的钢筋,弯曲和笔直部分的钢筋长度应分别优化。通过在这些部分中安装不同长度的钢筋,可以得到具有最小钢筋的最大钢筋效果。这项研究进一步发现,墙的弯曲部分需要更多的钢筋,弯曲和笔直部分的钢筋长度应分别优化。

更新日期:2021-05-03
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