岩土工程学报2024，Vol.46Issue(6)：1155-1165,11.DOI:10.11779/CJGE20230202
基于颗粒破碎耗能的堆石料流变模型
Creep model for rockfill materials based on particle breakage energy consumption
摘要
Abstract
Due to the complex rheological characteristics of rockfill materials,the existing empirical creep models have problems such as unclear meaning and too many parameters.Based on the remediation project of Hongshiyan landslide dam,the mechanical properties of landslide dam materials are tested.The correlation between the creep strain energy and the compression pressure and stress level in the creep process is analyzed,and the expression for the creep strain energy is obtained.Based on the ROWE stress dilatancy relationship considering the energy dissipation of particle breakage and the inference that the tangential volume ratio remains constant in the creep process,the expressions for the final volumetric strain and deviatoric strain are derived,and the established model can reflect the mechanism of creep deformation of rockfill materials.The analysis results of other rockfill materials such as granite rockfill,breccia rockfill and sand gravel show that the proposed creep model is universal.关键词
堆石料/颗粒破碎/流变模型/破碎耗能/剪胀方程Key words
rockfill/particle breakage/creep model/breakage energy consumption/dilatancy relationship分类
建筑与水利引用本文复制引用
陈子玉,李国英,米占宽,魏匡民..基于颗粒破碎耗能的堆石料流变模型[J].岩土工程学报,2024,46(6):1155-1165,11.基金项目
西藏自治区科技重大专项课题(XZ202201ZD0003G) （XZ202201ZD0003G）
国家自然科学基金项目(52350393) （52350393）
中央级公益性科研院所基本科研业务费专项资金项目(Y322003) （Y322003）
