沉积角对岛礁珊瑚砂力学特性影响的真三轴试验及本构模型研究

邬文浩; 吴杨; 彭伟锋; 黄云龙; 张小燕; 陈碧

doi:10.12052/gdutxb.250026

欢迎来到能源电力期刊网！

English Version 期刊登录

您当前的位置：

首页 >

文章列表页 >

沉积角对岛礁珊瑚砂力学特性影响的真三轴试验及本构模型研究

绿色岩土工程 | 更新时间：2026-05-27

- 沉积角对岛礁珊瑚砂力学特性影响的真三轴试验及本构模型研究
- True Triaxial Shear Test and Constitutive Model Study of the Effect of Depositional Angle on the Mechanical Characteristics of Coral Sand
- 广东工业大学学报 2025年42卷第2期页码：121-128
- 作者机构：
  
  1. 广州大学土木与交通学院,广东,广州,510006
  2. 中国矿业大学(北京) 力学与建筑工程学院,北京,100083
- 作者简介：
  
  邬文浩(1998–)，男，硕士研究生，主要研究方向为珊瑚砂的本构模型研究，E-mail：Wuwenhao@e.gzhu.edu.cn
  吴杨(1985–)，男，教授，博士，主要研究方向为珊瑚砂力学性质和本构模型研究，E-mail：yangwu@gzhu.edu.cn
- 基金信息：
  
  国家自然科学基金资助项目(52311540020);广东省自然科学基金资助项目(2024A1515010170);广州市科技计划项目(2024A04J4771);广州市教育局项目(202235224);广州大学校内科研项目(YJ2023025);大学生创新创业项目(202311078056);大学生创新创业项目(XJ202311078103)
- DOI：10.12052/gdutxb.250026
  中图分类号： TU411
- 纸质出版：2025
- 稿件说明：
移动端阅览
邬文浩, 吴杨, 彭伟锋, 等. 沉积角对岛礁珊瑚砂力学特性影响的真三轴试验及本构模型研究[J]. 广东工业大学学报, 2025, 42(2): 121–128.

Wu Wenhao, Wu Yang, Peng Weifeng, et al. True Triaxial Shear Test and Constitutive Model Study of the Effect of Depositional Angle on the Mechanical Characteristics of Coral Sand[J]. 2025, 42(2): 121-128.
邬文浩, 吴杨, 彭伟锋, 等. 沉积角对岛礁珊瑚砂力学特性影响的真三轴试验及本构模型研究[J]. 广东工业大学学报, 2025, 42(2): 121–128. DOI： 10.12052/gdutxb.250026

Wu Wenhao, Wu Yang, Peng Weifeng, et al. True Triaxial Shear Test and Constitutive Model Study of the Effect of Depositional Angle on the Mechanical Characteristics of Coral Sand[J]. 2025, 42(2): 121-128. DOI： 10.12052/gdutxb.250026.

摘要

珊瑚砂是岛礁工程中吹填地基的首选材料，是一种颗粒形状复杂、孔隙富集的颗粒材料。受重力沉积和颗粒特性影响，珊瑚砂吹填地基土的力学性质表现出明显各向异性。本文通过对取自南海岛礁的珊瑚砂开展真三轴排水剪切试验，研究中主应力系数和沉积角对其强度和变形特性的影响。试验结果表明：随着中主应力系数的增加，珊瑚砂的峰值强度显著提高，体变剪胀性减弱。另外，珊瑚砂的峰值强度会随着初始沉积角的增加而减小。基于边界面模型理论

构建了能够考虑各向异性的砂土本构模型。通过与真三轴试验结果的对比，验证了该模型的有效性。研究成果将为合理评估三维应力状态下南海岛礁地基承载性能提供理论参考。

Abstract

Coral sand is the preferred backfill material for reef foundation engineering due to its complex particle morphology and highly porous structure. The mechanical properties of coral sand deposits exhibit significant anisotropy resulting from gravitational sedimentation processes and inherent particle characteristics. This investigation conducted true triaxial drained shear tests on South China Sea coral sands to systematically evaluate the influence of intermediate principal stress coefficient and initial deposition angle on mechanical responses. Experimental findings reveal two critical trends: (1) Peak shear strength demonstrates marked enhancement with increasing intermediate principal stress coefficient

accompanied by reduced dilatancy effects; (2) Progressive attenuation of peak strength occurs with elevation of initial deposition angle. A novel three-dimensional anisotropic constitutive model was developed within the theoretical framework of bounding surface plasticity. Model validation through comparative analysis with true triaxial test data confirms its predictive capability. These research outcomes establish a theoretical basis for evaluating three-dimensional bearing capacity characteristics of coral sand foundations in South China Sea reef engineering applications.

关键词

Keywords

references

ZHANG K Y, YIN Z Z, MEI G X. Development of soil’s anisotropy study[J]. Rock and Soil Mechanics, 2004(9): 1503-1509.

ZHANG K Y, YIN Z Z, MEI G X. Difference and connection of two kinds of anisotropy of soils[J]. Chinese Journal of Rock Mechanics and Engineering, 2005(9): 1599-1604.

YAO Y P, TANG K S. Isotropically transformed stress method for the anisotropy of soils[J]. Chinese Journal of Theoretical and Applied Mechanics, 2022, 54(6): 1651-1659.

WANG Y Q, HONG Y, GUO Z, et al . Micro-and macro-mechanical behavior of crushable calcareous sand in South China Sea[J ] . Rock and Soil Mechanics, 2018, 39(1): 199-206.

WU Y, RONG H J, WANG J L, et al . A true triaxial experimental study on the coupled effect of particle shape and intermediate principal stress on the mechanical properties of sand[J ] . Chinese Journal of Rock Mechanics and Engineering, 2023, 42(2): 497-507.

ZHU C Q, CHEN H Y, MENG Q S, et al . Microscopic characterization of intra-pore structures of calcareous sands[J ] . Rock and Soil Mechanics, 2014, 35(7): 1831-1836.

JIANG M J, WU D, CAO P, et al . Connected inner pore analysis of calcareous sands using SEM[J ] . Chinese Journal of Geotechnical Engineering, 2017, 39(Suppl.1): 1-5.

WU Y, CUI J, LI N, et al . Experimental study on the mechanical behavior and particle breakage characteristics of hydraulic filled coral sand on a coral reef island in the South China Sea[J ] . Rock and Soil Mechanics, 2020, 41(10): 3181-3191.

WU Y, LI N, WANG X Z, et al . Experimental investigation on mechanical behavior and particle crushing of calcareous sand retrieved from South China Sea[J ] . Engineering Geology, 2021, 280: 105932.

XU G M, WU Y, WU Y H, et al . Shear and particle breakage properties of gap-graded coral sands[J ] . Journal of Civil and Environmental Engineering, 2023, 45(4): 56-64.

ODA M. The mechanism of fabric changes during compressional deformation of sand[J]. Soils and Foundations, 1972, 12(2): 1-18.

YOSHIMINE M, ISHIHARA K, VARGAS W. Effects of principal stress direction and intermediate principal stress on undrained shear behavior of sand[J]. Soils and Foundations, 1998, 38(3): 179-188.

YANG Z X, LI X S, MING H Y. Study on anisotropy and undrained shear properties of sand[J]. Journal of Shenzhen University Science and Engineering, 2009, 26(2): 158-163.

JIANG M J, CHEN T, LIU J D, et al . Discrete elemen t analysis of effects of sedimentary angle on macro-micromechanical properties of pure sand[J ] . Rock and Soil Mechanics, 2016, 37(2): 554-562.

ODA M, KOISHIKAWA I, HIGUCHI T. Experimental study of anisotropic shear strength of sand by plane strain test[J]. Soils and Foundations, 1978, 18(1): 25-38.

LI X F, HUANG M S, QIAN J G. Failure criterion of anisotropic sand with method of macro-meso incorporation[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(9): 1885-1892.

徐志伟. 土体各向异性变形特性真三轴试验研究[D]. 南京: 河海大学, 2003.

ABELEV A V, LADE P V. Characterization of failure in cross-anisotropic soils[J]. Journal of Engineering Mechanics, 2004, 130(5): 599-606.

MA W J, QIN Y, WANG C D, et al . Experimental study on anisotropy of saturated coral sand under complex stress conditions[J ] . Chinese Journal of Geotechnical Engineering, 2022, 44(3): 576-583.

ODA M. Fabric tensor and its geometrical meaning[M]// ODA M, IWASHITA K. Introduction to Mechanics of Granular Materials. The Netherlands, Rotterdam: Balkema AA, 1999: 27-35.

LI X S, DAFALIAS Y F. Constitutive modeling of inherently anisotropic sand behavior[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2002, 128(10): 868-880.

LI X S, DAFALIAS Y F. Anisotropic critical state theory: role of fabric[J]. Journal of Engineering Mechanics, 2012, 138(3): 263-275.

GAO Z, ZHAO J, LI X S, et al . A critical state sand plasticity model accounting for fabric evolution[J ] . International Journal for Numerical and Analytical Methods in Geomechanics, 2014, 38(4): 370-390.

GAO Z, ZHAO J. A non-coaxial critical-state model for sand accounting for fabric anisotropy and fabric evolution[J]. International Journal of Solids and Structures, 2017, 106-107: 200-212.

YANG Z X, XU T T, LI X S. J2-deformation type model coupled with state dependent dilatancy[J]. Computers and Geotechnics, 2019, 105: 129-141.

中华人民共和国住房和城乡建设部, 国家市场监督管理总局. 土工试验方法标准 : GB/T 50123—2019[S]. 北京: 中国计划出版社, 2019.

POOROOSHASB H B, HOLUBEC I, SHERBOURNE A N. Yielding and flow of sand in triaxial compression: part I[J]. Canadian Geotechnical Journal, 1966, 3(4): 179-190.

LI X S, DAFALIAS Y F. Dilatancy for cohesionless soils[J]. Géotechnique, 2000, 50(4): 449-460.

YANG X Q, ZHU Z Z, HE S X. Researches on failure criteria of Lade-Duncan, Matsuoka-Nakai and Ottosen[J]. Chinese Journal of Geotechnical Engineering, 2006(3): 337-342.

沈凤娇. 潮白河地区饱和粉细砂真三轴试验及本构模型研究[D]. 北京: 北方工业大学, 2021.

RICHART F E, HALL J R, WOODS R D. Vibrations of soils and foundations [M]. Englewood Cliffs, NJ: Prentice-Hall, 1970.

SLOAN S W, ABBO A J, SHENG D. Refined explicit integration of elastoplastic models with automatic error control[J]. Engineering Computations, 2001, 18(1/2): 121-194.

POTTS D M, GENS A. A critical assessment of methods of correcting for drift from the yield surface in elasto‐plastic finite element analysis[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 1985, 9(2): 149-159.

WEI W C, TANG H X, LIU J M, et al . Nonlinear softening Cosserat continuum model and its application in finite element analysis for strain localization of soils[J ] . Chinese Journal of Geotechnical Engineering, 2024, 46(12): 2492-2502.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

基于高效时序建模的RGB-T跟踪

具守恒量波动方程的循环双子网物理信息神经网络

基于PSI技术的福州市地面形变监测与影响因素分析

多套餐共享储能模式下考虑功率互济的社区联盟优化运行策略

面向灾后救援的多无人机通感算一体化资源分配优化方法