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堆石料动力残余应变模型研究

王庭博, 傅中志, 陈生水, 韩华强

王庭博, 傅中志, 陈生水, 韩华强. 堆石料动力残余应变模型研究[J]. 岩土工程学报, 2016, 38(8): 1399-1406. DOI: 10.11779/CJGE201608006
引用本文: 王庭博, 傅中志, 陈生水, 韩华强. 堆石料动力残余应变模型研究[J]. 岩土工程学报, 2016, 38(8): 1399-1406. DOI: 10.11779/CJGE201608006
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WANG Ting-bo, FU Zhong-zhi, CHEN Sheng-shui, HAN Hua-qiang. Residual deformation model for rock-fill materials[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(8): 1399-1406. DOI: 10.11779/CJGE201608006
Citation: WANG Ting-bo, FU Zhong-zhi, CHEN Sheng-shui, HAN Hua-qiang. Residual deformation model for rock-fill materials[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(8): 1399-1406. DOI: 10.11779/CJGE201608006
shu

堆石料动力残余应变模型研究  English Version

  • 1. 同济大学地下建筑与工程系,上海 200092; 2. 南京水利科学研究院岩土工程研究所,江苏 南京 210029; 3. 水利部土石坝破坏机理与防控技术重点实验室,江苏 南京 210024

基金项目: 国家自然科学基金项目（51539006,51379130）; 水利公益性行业科研专项经费项目（201501035）; 中央级公益性科研院所基本科研业务费专项资金项目（Y314011,Y315005）
详细信息
    作者简介:

    王庭博(1987- ),男,博士研究生,主要从事高土石坝方面的研究工作。E-mail: 1310176@tongji.edu.cn。

Residual deformation model for rock-fill materials

  • 1. College of Civil Engineering, Tongji University, Shanghai 200092, China;; 2. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210029, China;; 3. Key Laboratory of Earth-Rock Dam Failure Mechanism and Safety Control Techniques, Ministry of Water Resources, Nanjing 210024, China

摘要

    摘要
  • 摘要: 采用大型静动三轴压缩试验仪,对某面板堆石坝筑坝材料进行了动残余变形试验,研究了砂砾石料和开挖料在循环荷载作用下的残余变形特性及其影响因素。试验资料表明,动荷载作用下第一次循环振动诱发的残余剪应变最大,随着振次增长,剪应变持续增加,在试验设定的振次内,未出现收敛趋势。与之不同,残余体应变在循环荷载作用下有明显的收敛趋势。基于试验结果建立了残余变形与循环振动周次和动剪应变振幅的关系,提出了计算模型。模型共8个参数,均可通过动三轴试验确定,能较好地反映残余应变发展规律。
    Abstract: Large scale triaxial shear tests on rock-fill materials are performed to study the residual deformation behaviors of rock-fill materials by using the large-scale triaxial apparatus. The characteristics of residual deformation of cushion material, excavated material and main rock-fill with two different densities are the focuses of this study. Based on enough test results, it is revealed that the generated shear strain after the application of the first cycle of loading is the main part of the residual shear strain, and its development relates to the accumulation rate of the residual shear strain as the loading cycle increases. In the set test vibration times, the convergence trend does not appear. In contrast, the rock-fill materials have asymptotic volumetric behaviors under cyclic loading. On the basis of test data, a residual deformation model with eight parameters is proposed, which can well reflect the development of the residual strain. And the parameters can be calibrated by dynamic triaxial tests.
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    • 参考文献(24)
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  • 收稿日期:  2015-07-23
  • 发布日期:  2016-08-24

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