Large scale triaxial shear test on dynamic properties of rockfill materials

DONG Wei-xin; SUN Shu-wei; YU Yu-zhen; SUN Xun

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Large scale triaxial shear test on dynamic properties of rockfill materials

更新时间：2026-06-25

- Large scale triaxial shear test on dynamic properties of rockfill materials
- Vol. 32, Issue S2, (2011)
- 作者机构：
  
  1. 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
  2. 中铁西北科学研究院有限公司,甘肃,兰州,730000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TV641.4
- Online First：26 August 2011，
  
  Published：2011
- 稿件说明：
移动端阅览
DONG Wei-xin, SUN Shu-wei, YU Yu-zhen, et al. Large scale triaxial shear test on dynamic properties of rockfill materials[J]. 2011, 32(S2).
DOI：

DONG Wei-xin, SUN Shu-wei, YU Yu-zhen, et al. Large scale triaxial shear test on dynamic properties of rockfill materials[J]. 2011, 32(S2). DOI：

摘要

采用大型高压多功能静动三轴试验机，对某面板堆石坝闪长岩类堆石料进行了动弹性模量与阻尼比试验和动残余变形试验，研究了主堆石料、过渡料和垫层料3种坝料在循环荷载下的动应力-应变特性和动残余变形特性及其主要影响因素。试验结果表明，材料的动应力-应变关系受剪应变水平的影响较大，各种材料的动弹性模量随剪应变的增加发生衰减，而阻尼比则相应增大；围压的增加引起材料的最大动弹性模量的增加，但围压力对材料动弹模增长的影响是有限的；固结主应力比的增大，会引起有效球应力的增加，从而使材料的最大动弹性模量增大。此外，从试验结果和模型参数来看，各种材料的动应力-动应变变化规律以及动变形随振次的发展规律均可以用修正等价黏弹性模型和沈珠江残余变形经验公式进行描述

Abstract

Large scale triaxial shear tests on rockfill materials were performed to study the characteristics of dynamic moduli

damping ratios and residual deformations of rockfill materials by the large-scale multifunction triaxial apparatus. The dynamic stress-strain relationship and residual deformation of main rockfill

cushion layer and transitional rockfill under cyclic loading are the focuses of this study. The experimental results show that the dynamic stress-strain relationship is sensitive to shear strain level. The dynamic moduli of rockfill material decreases with the shear strain increasing. Confining pressure and consolidation stress ratio are both proportional to the dynamic moduli. From the results of test and model parameters

the dynamic stress-strain relationships and residual deformation can be described reasonably by the modified nonlinear viscoelastic dynamic constitutive models and empirical formula by Shen Zhujiang

respectively

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