堆石流变模型及在高填方路基工程中的应用

耿之周; 徐锴; 李雄威

doi:10.11779/CJGE2016S2042

堆石流变模型及在高填方路基工程中的应用 English Version

1. 南京水利科学研究院岩土工程研究所,江苏南京 210024;
2. 常州工学院,江苏常州 213002

基金项目: 水利部公益性行业科研专项经费项目（201401006）; 水利部公益性行业科研专项经费项目（201501043）; 国家自然科学基金项目（51408381）

详细信息

作者简介:
耿之周(1988- ),男,工程师,主要从事地基处理和土工合成材料方面的研究。E-mail: zzgeng@nhri.cn。

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出版历程
- 收稿日期: 2016-05-18
- 发布日期: 2016-10-19

Creep model for rockfill and its application to road ground projects

1. Geotechnical Engineering Department, Nanjing Hydraulic Research Institute, Nanjing 210024, China;
2.Changzhou Institute of Technology, Changzhou 213002, China

摘要

摘要: 依托某堆石体填筑道基工程,对堆石体流变特性进行了研究。在三参数（b,c,d）流变模型基础上,引入了高木俊介线性加载模式,用于分析堆石体分级加载作用下的变形时变规律,同时还考虑了道基结构自重应力作用三角形分布特征。通过室内大型压缩试验结果,获取了模型所需参数,在此基础上对依托工程堆石体道基典型断面进行了流变分析,分析结果表明,道基结构自身压缩流变基本可以忽略。这一结论与压缩试验前后试样级配变化较小的试验结果相验证。
- 堆石体 /
- 流变模型 /
- 颗粒级配 /
- 分级加载
Abstract: Relying on a road ground project filled with rockfill, the creep behavior of rockfill is studied. Based on the creep model with three parameters (b, c, d), the Shunsuke Takagi multi-linear load mode is introduced to analyze the time-dependent law of deformation of rockfill under step load. The triangular distribution characteristics of self-weight stress of road ground structures are also taken into account. Through the results of indoor large compression tests, the required model parameters are obtained, based on which the creep behavior of road ground rockfill of typical cross section of the supporting project is analyzed. The results indicate that the own compressive creep of road ground structures can be ignored. The conclusion is validated by the small gradation change before and after the compression tests.
- rockfill /
- creep model /
- grain size gradation /
- step loading

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参考文献(14)

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