堆石料的动力残余应变模型

迟世春; 吕小龙; 贾宇峰

doi:10.11779/CJGE201602023

堆石料的动力残余应变模型 English Version

大连理工大学建设工程学部水利工程学院,辽宁大连 116024

基金项目: 国家自然科学基金项目（51179024,51379029,51109027）

详细信息

作者简介:
迟世春（1964- ）,男,山东高密人,教授,博士生导师,从事土石坝工程研究工作。E-mail: schchi@dlut.edu.cn。

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出版历程
- 收稿日期: 2015-03-18
- 发布日期: 2016-02-24

Model for dynamic residual strain behavior of rockfill materials

School of Hydraulic Engneering, Dalian University of Technology, Dalian 116024, China

摘要

摘要: 基于国内多座土石坝筑坝材料的动力试验成果,研究了堆石料的动力残余变形特性。分析了沈珠江及其改进模型、朱晟模型和水科院模型的差异及存在的问题。在此基础上,建立了以围压和动应力为自变量,并考虑应力水平影响的堆石料残余应变模型。分析比较发现,提出的新模型能够较好地吻合试验结果。
- 土石坝 /
- 堆石料 /
- 残余变形
Abstract: According to the collected dynamic test results of rockfill materials from many earth-rock dams in China, the dynamic residual strain characteristics of these soils are studied. The differences among the primary residual strain models by Shen Zhujiang, Zou Degao, Ling Hua, Zhu Sheng and Zhao Jianming as well as their limitations are analyzed. After that, a new model for residual strain of rockfill materials is proposed based on some collected test results. In this model, the residual shear strain and residual volumetric strain are a function of confining pressure and dynamic cyclic stress, while the residual shear strain is also affected by the static shear stress level. By analyzing the results, it is found that the simulated residual strain curves by the proposed model agree well with the test results under the same stress condition.
- earth-rock dam /
- rockfill material /
- residual strain

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参考文献(11)

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