土工格栅加筋粗粒料的弹塑性本构模型

庞锐; 吴财星; 王星亮; 徐斌

doi:10.11835/j.issn.2096-6717.2024.092

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土工格栅加筋粗粒料的弹塑性本构模型

土木工程 | 更新时间：2026-03-30

- 土工格栅加筋粗粒料的弹塑性本构模型
- Elastoplastic constitutive model of geogrid-reinforced coarse-grained materials
- 土木与环境工程学报 2026年48卷第2期页码：62-69
- 作者机构：
  
  1.大连理工大学，建设工程学院，辽宁大连 116024
  2.大连理工大学，海岸与近海工程国家重点实验室，辽宁大连 116024
  3.河北工程大学水利水电学院，河北邯郸 056038
- 作者简介：
  
  庞锐（1991- ），男，博士后，副教授，主要从事岩土工程抗震风险评价研究，E-mail: pangrui@dlut.edu.cn。
- 基金信息：
  
  国家重点研发计划(2023YFC3011400);国家自然科学基金(52479094;52379117;52279096;52279125)
- DOI：10.11835/j.issn.2096-6717.2024.092
  中图分类号： TV641.1
- 收稿：2024-07-21，
  
  纸质出版：2026-04-25
- 稿件说明：
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庞锐,吴财星,王星亮等.土工格栅加筋粗粒料的弹塑性本构模型[J].土木与环境工程学报,2026,48(02):62-69.

PANG Rui,WU Caixing,WANG Xingliang,et al.Elastoplastic constitutive model of geogrid-reinforced coarse-grained materials[J].Journal of Civil and Environmental Engineering,2026,48(02):62-69.
庞锐,吴财星,王星亮等.土工格栅加筋粗粒料的弹塑性本构模型[J].土木与环境工程学报,2026,48(02):62-69. DOI： 10.11835/j.issn.2096-6717.2024.092.

PANG Rui,WU Caixing,WANG Xingliang,et al.Elastoplastic constitutive model of geogrid-reinforced coarse-grained materials[J].Journal of Civil and Environmental Engineering,2026,48(02):62-69. DOI： 10.11835/j.issn.2096-6717.2024.092.

摘要

土工格栅对粗粒料的强度、变形特性有一定影响，准确地描述土工格栅加筋粗粒料在加载过程中的宏观力学行为具有重要意义。为研究能够合理描述其强度、变形特性的本构模型，以土工格栅加筋粗粒料室内三轴试验成果为基础，根据不同类型土工格栅加筋粗粒料的剪胀特性，以剑桥模型剪胀方程为基础，提出能够合理描述土工格栅加筋粗粒料剪胀、剪缩特性的非线性剪胀方程，通过与Rowe剪胀方程、剑桥模型剪胀方程进行比较，证明该方程在预测土工格栅加筋粗粒料剪胀特性方面具有优势。在此基础上，结合广义塑性模型理论，构造能够反映土工格栅加筋粗粒料变形和强度特性的弹塑性本构模型。模型共有6个参数，每个参数物理意义明确，均可通过室内三轴试验确定。最后，通过模拟多组不同围压下土工格栅加筋粗粒料室内三轴试验，验证了模型的合理性。结果表明，建立的模型总体上能够合理地描述不同类型土工格栅加筋粗粒料的复杂软化、硬化和剪胀、剪缩行为，可为相应工程提供有效的本构工具。

Abstract

Geogrid has a certain influence on the strength and deformation characteristics of coarse-grained materials

and accurately describing the macroscopic mechanical behavior of geogrid-reinforced coarse-grained materials during loading is of great significance. In order to investigate the constitutive model which can reasonably describe its strength and deformation characteristics

based on the conventional triaxial test results of geogrid-reinforced coarse-grained materials

a nonlinear dilatancy equation is proposed in this study to reasonably describe the dilatancy and shrinkage characteristics of geogrid-reinforced coarse-grained materials. Compared with the Rowe and Cambridge model shear dilatancy equations

it is proved that this equation has advantages in predicting the shear dilatancy characteristics of geogrid-reinforced coarse-grained materials. Combined with the theory of generalized plasticity model

an elastoplastic constitutive model that can reflect the deformation and strength characteristics of geogrid-reinforced coarse-grained materials is proposed. There are totally 6 parameters in the model

all of which have clear physical meanings and can be determined by conventional triaxial tests. Finally

the accuracy of this model is fully proved by simulating the static tests under different confining pressures. The results show that the established model can reasonably describe the complex softening

hardening

and dilatancy and shrinkage behaviors of different types of geogrid-reinforced coarse-grained materials

providing an effective constitutive tool for corresponding engineering applications.

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