Numerical analysis of uneven settlement of highway subgrade based on nonlinear algorithm

IF 2.4 Q2 ENGINEERING, MECHANICAL Nonlinear Engineering - Modeling and Application Pub Date : 2023-01-01 DOI:10.1515/nleng-2022-0253
Ang Gao, Mengxi Zhang, Shweta Sachdeva, Shavkatov Shavkatovich, Vishal Jagota, Shabnam Sayyad
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Abstract

Abstract In order to accurately and easily calculate the settlement of the foundation, a high-speed roadbed based on a nonlinear algorithm is proposed to broaden the uneven and uniform reduction numerical analysis. The basic loading test results of the foundation loading test results in a series of sand-bearing test results made by gear suppressive elastic Mohr–COMB were verified using general finite element procedure ABAQUS. The results show that for most original slopes of 1:1.5 highways, according to the above research results and relevant specifications, the high-wig ratio of the steps should be controlled in 1:1.2 to 1:1.5. That is, when the width is controlled in a range of about 1.2 m, the height of the step is held at 0.8–1.0 m. The larger the role of filling the top surface, the more obvious is the role of the geogrid to reduce the settlement of the road embankment. Under the conditions of the same subgraduation, the reinforced road embankment of the geotechnical grille, the settling effect that occurs in the load activity is also more obvious. This method offers a better design and construction technique for expanding the project, investigates the control of differential settlements caused by excavation step size and geogrid size, and seeks more complete, scientific programmes. It has the potential to drastically reduce the project’s investigation effort, shorten the survey cycle, and provide incalculable economic and social benefits. Therefore, the research results of this paper have improved the reliability of existing ground settlement analysis.
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基于非线性算法的公路路基不均匀沉降数值分析
摘要为了准确方便地计算路基沉降,提出了一种基于非线性算法的高速路基沉降计算方法,拓宽了非均匀折减数值分析。采用通用有限元程序ABAQUS对齿轮抑制弹性Mohr-COMB系列承载试验结果中的基础加载试验结果进行了验证。结果表明:对于大多数1:1.5公路的原始坡度,根据上述研究成果及相关规范,高阶高程比应控制在1:1.2 ~ 1:1.5之间。即当宽度控制在1.2 m左右的范围内时,台阶高度保持在0.8-1.0 m。填充顶面作用越大,土工格栅减少路堤沉降的作用就越明显。在相同分段条件下,加筋路堤的土工格栅,在荷载活动下发生的沉降效果也更为明显。该方法为扩建工程提供了更好的设计和施工技术,研究了开挖步距和土工格栅尺寸引起的差异沉降的控制,并寻求更完整、更科学的方案。它有可能大大减少项目的调查工作量,缩短调查周期,并提供不可估量的经济和社会效益。因此,本文的研究结果提高了现有地面沉降分析的可靠性。
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来源期刊
CiteScore
6.20
自引率
3.60%
发文量
49
审稿时长
44 weeks
期刊介绍: The Journal of Nonlinear Engineering aims to be a platform for sharing original research results in theoretical, experimental, practical, and applied nonlinear phenomena within engineering. It serves as a forum to exchange ideas and applications of nonlinear problems across various engineering disciplines. Articles are considered for publication if they explore nonlinearities in engineering systems, offering realistic mathematical modeling, utilizing nonlinearity for new designs, stabilizing systems, understanding system behavior through nonlinearity, optimizing systems based on nonlinear interactions, and developing algorithms to harness and leverage nonlinear elements.
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