基于 α 空间移动平面的考虑横向各向同性的新三维强度准则

IF 5.3 1区 工程技术 Q1 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Kun Wang, Daofei Tang, Tian Fang, Changhong Wang
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引用次数: 0

摘要

天然岩土材料受沉积作用影响,表现出明显的各向异性。要研究土的横向各向异性特征,必须考虑中间主应力和加载方向的影响。目前,有关横向各向异性的研究主要集中在修正应力空间,而修正应力空间在多屈服面构成模型中的应用比较麻烦。为了在真实应力空间中描述土工材料的三维力学性能,引入了 α 空间移动平面强度准则。然后,结合结构张量,横向各向同性三维强度准则可以考虑加载角度的影响。最后,预测了深草粘土、非饱和 SP-SC 土、未加固蒙特雷砂、山口大理石、旧金山湾泥、丰浦砂和圣莫尼卡海滩砂在π平面上的三维强度。结果表明,在横向各向同性的情况下,αmn-SMP 准则能够合理地描述三维力学性能,并能为岩土工程实践提供准确的强度准则。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A new three-dimensional strength criterion considering the transverse isotropy based on the α-Spatial Mobilized Plane
Natural geotechnical materials are affected by sedimentation and exhibit significant anisotropy. To study the transverse isotropy characteristics of soil, the influence of intermediate principal stress and loading direction must be considered. Currently, research on transverse isotropy primarily focuses on the modified stress space, which is cumbersome to apply in multi-yield surface constitutive models. To describe the three-dimensional mechanical properties of geomaterials in real stress space, the α-Spatial Mobilized Plane strength criterion is introduced. Then, combined with the structure tensor, the transverse isotropic three-dimensional strength criterion can account for the effect of the loading angle. Finally, the three-dimensional strengths of Fukakusa clay, unsaturated SP-SC soils, uncemented Monterey sands, Yamaguchi marble, San Francisco Bay mud, Toyoura sand, and Santa Monica Beach sand are predicted on the π-plane. The results show that the αmn-SMP criterion, in the context of transverse isotropy, can describe the three-dimensional mechanical properties reasonably, and it can provide an accurate strength criterion for geotechnical engineering practice.
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来源期刊
Computers and Geotechnics
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.
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