Experimental analysis and modeling study of the coupled elastoplastic damage model for sandy mudstone

IF 3.7 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2025-04-28 DOI:10.1007/s10064-025-04258-3

Mingtao Hu, Weiya Xu, Huanling Wang, Wei Huang, Yu Ning, Tao Zhang

引用次数: 0

Abstract

Triaxial monotonic and cyclic loading tests were conducted on typical sandy mudstone samples under different confining pressures. The samples were obtained from the Liujiacun tunnel in the Chuxiong section of the Central Yunnan Water Diversion Project. The strength and deformation characteristics of sandy mudstone were analyzed. Moreover, the damage parameters were introduced in the analysis process. Based on the mechanical behavior characteristics of sandy mudstone, a coupled elastoplastic damage model with the modified Drucker-Prager criterion was proposed. In addition, an elastoplastic damage coupling correction algorithm was also proposed to introduce the mechanical behavior of sandy mudstone. Finally, there is a good agreement between the experimental data and numerical simulation results. The coupled elastoplastic damage model with the proposed algorithm could accurately describe the mechanical behavior of sandy mudstone.

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砂质泥岩弹塑性耦合损伤模型的实验分析与建模研究

对典型砂质泥岩试样在不同围压下进行了三轴单调和循环加载试验。样品取自滇中引水工程楚雄段刘家村隧洞。分析了砂质泥岩的强度和变形特征。并在分析过程中引入了损伤参数。基于砂质泥岩的力学行为特征，提出了一种基于改进Drucker-Prager准则的砂质泥岩弹塑性耦合损伤模型。此外，还提出了一种弹塑性损伤耦合校正算法来引入砂质泥岩的力学行为。最后，实验数据与数值模拟结果吻合较好。采用该算法建立的弹塑性耦合损伤模型能较准确地描述砂质泥岩的力学行为。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.