Analytical model of three-dimensional concentric ellipsoidal soil arching in geosynthetic-reinforced pile-supported embankments

IF 4.7 1区 工程技术 Q1 ENGINEERING, GEOLOGICAL Geotextiles and Geomembranes Pub Date : 2024-08-27 DOI:10.1016/j.geotexmem.2024.08.005
Rong Sun , Xin Jiang , Lei Zhang , Canyang Cui , Zhengxian Li , Yanjun Qiu
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Abstract

The geosynthetic-reinforced pile-supported (GRPS) embankment is an effective method for improving soft ground, widely adopted in engineering applications. In this paper, a concentric ellipsoidal soil arching model was proposed to describe the stress distribution within the GRPS embankment. An analytical solution for soil arching efficacy was derived by solving the loads acting on the pile caps and geosynthetics under piles arranged in a squared pattern. Subsequently, finite difference models were established to verify the accuracy of the derived analytical solution. Meanwhile, four field tests were introduced to validate the analytical model. Finally, parametric studies were conducted on the concentric ellipsoidal soil arching model, considering parameters such as the embankment height, the pile spacing, the pile cap width, the unit weight, and the friction angle of fill soil.

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土工合成材料加固桩支撑路堤中三维同心椭圆土拱起的分析模型
土工合成材料加固桩支撑路堤(GRPS)是改善软土地基的一种有效方法,在工程应用中被广泛采用。本文提出了一种同心椭圆土拱模型来描述土工合成材料桩支撑路堤内的应力分布。通过求解方形排列的桩下桩帽和土工合成材料上的荷载,得出了土拱效应的解析解。随后,建立了有限差分模型来验证推导出的分析解决方案的准确性。同时,还引入了四个现场试验来验证分析模型。最后,考虑到路堤高度、桩间距、桩帽宽度、单位重量和填土摩擦角等参数,对同心椭圆土拱模型进行了参数研究。
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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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