A simplified interpolation algorithm for the numerical simulation of the consolidation in composite foundation containing group of stone columns

IF 5.3 1区工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Computers and Geotechnics Pub Date : 2024-11-30 DOI:10.1016/j.compgeo.2024.106941

Li Yuan , Qiankun Liu , Tongchun Li , Fei Wang

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引用次数: 0

Abstract

Based on Biot consolidation theory, a simplified interpolation algorithm under the finite element method and a corresponding modeling method for group of stone columns are proposed to solve the consolidation simulation problem of composite foundation containing group of stone columns. The correctness of the modeling method and computational program is confirmed by comparing the results from the unit cell model with those from axisymmetric model and analytical solution. Subsequently, the composite foundation model is used to verify the accuracy of this method in calculating the settlement change and consolidation time under load for composite foundation containing group of stone columns. Compared to detailed modeling, this method gets satisfactory results with simpler modeling and less computation time. In comparison to homogenization method, this method offers better computational accuracy and enables the stress analysis of stone column. Additionally, discussions on mesh sensitivity, number of stone columns and the influence of the upper structure provide guidelines for the application of this method in practical engineering projects.

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含石柱群复合地基固结数值模拟的简化插值算法

基于Biot固结理论，提出了有限元法下的简化插值算法及相应的石柱群建模方法，解决了含石柱群复合地基固结模拟问题。通过将单胞模型与轴对称模型及解析解的结果进行比较，验证了建模方法和计算程序的正确性。随后，利用复合地基模型验证了该方法计算含石柱群复合地基荷载作用下沉降变化和固结时间的准确性。与精细建模相比，该方法具有建模简单、计算时间短等优点。与均质法相比，该方法具有更好的计算精度，能够对石柱进行应力分析。此外，对网格灵敏度、石柱数及上部结构的影响进行了讨论，为该方法在实际工程中的应用提供了指导。

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来源期刊

Computers and Geotechnics 地学-地球科学综合

CiteScore

9.10

自引率

15.10%

发文量

438

审稿时长

45 days

期刊介绍： The use of computers is firmly established in geotechnical engineering and continues to grow rapidly in both engineering practice and academe. The development of advanced numerical techniques and constitutive modeling, in conjunction with rapid developments in computer hardware, enables problems to be tackled that were unthinkable even a few years ago. Computers and Geotechnics provides an up-to-date reference for engineers and researchers engaged in computer aided analysis and research in geotechnical engineering. The journal is intended for an expeditious dissemination of advanced computer applications across a broad range of geotechnical topics. Contributions on advances in numerical algorithms, computer implementation of new constitutive models and probabilistic methods are especially encouraged.