采用滑移线法计算加固土坡上条形基脚的抗震承载力

IF 4.7 1区 工程技术 Q1 ENGINEERING, GEOLOGICAL
Majd Tarraf, Ehsan Seyedi Hosseininia
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引用次数: 0

摘要

本研究采用两阶段法和滑移线法对加筋土结构上条形基脚的地震垂直承载力进行了研究。调查的目的是建立滑移线场,并确定临界滑移面,而无需假设任何预定义的滑移面。所获得的结果与之前的研究结果进行了比较,结果表明两者具有良好的一致性,并验证了所建议方法的准确性。承载力系数随水平地震系数、土壤内摩擦角、按基脚宽度归一化的后退距离和斜坡倾斜角的变化。水平地震系数的增加导致承载力系数的降低,而土壤内摩擦角的增加则产生相反的影响。研究还考察了后退距离对承载力的影响,结果表明,随着后退距离的增加,承载力显著提高。此外,研究还探讨了抗拉强度比和后退距离对极限承载力系数和承载力比的影响。通过等高线图分析和展示了基脚下方加固力的分布情况,为了解加固土壤斜坡上基脚的抗震行为提供了宝贵的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Seismic bearing capacity of strip footings placed on reinforced soil slopes using slip line method

Seismic bearing capacity of strip footings placed on reinforced soil slopes using slip line method

This study investigates the seismic vertical bearing capacity of strip footings positioned on reinforced soil structures employing a two-phase approach and the slip line method. The investigation aims to establish a slip line field and determine the critical slip surface without any assumptions of predefined surfaces. The obtained results are compared with previous studies, demonstrating a good agreement and validating the accuracy of the proposed approach. The variation of the bearing capacity factor with the horizontal seismic coefficient, soil internal friction angle, setback distance normalized by footing width, and slope incline angle. An increase in the horizontal seismic coefficient leads to a decrease in bearing capacity factor, while an increase in the soil internal friction angle has the opposite effect. The influence of the setback distance on the bearing capacity is also examined, highlighting significant improvements with increased setback distances. Additionally, the study investigates the impact of the tensile strength ratio and setback distance on the ultimate bearing capacity factor and the bearing capacity ratio. The distribution of reinforcement forces beneath the footing is analyzed and presented through contour plots, providing valuable insights into the seismic behavior of footings on reinforced soil slopes.

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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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