Experimental Study on K<sub>0</sub> Triaxial Creep Properties of Remolded Q<sub>3</sub> Loess

FAN Tao; GU Qiankang; LIU Shaobo; YAO Zhihua; ZHU Sidi

doi:10.13961/j.cnki.stbctb.2016.03.011

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Experimental Study on K₀ Triaxial Creep Properties of Remolded Q₃ Loess

- Experimental Study on K₀ Triaxial Creep Properties of Remolded Q₃ Loess
- Bulletin of Soiland Water Conservation Vol. 36, Issue 3, Pages: 56-61(2016)
- 作者机构：
  
  空军工程大学航空航天工程学院,陕西,西安,710038
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.03.011
  CLC：
- Published：2016
- 稿件说明：
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FAN Tao, GU Qiankang, LIU Shaobo, et al. Experimental Study on K₀ Triaxial Creep Properties of Remolded Q₃ Loess[J]. Bulletin of Soiland Water Conservation, 2016, 36(3): 56-61.
DOI：

FAN Tao, GU Qiankang, LIU Shaobo, et al. Experimental Study on K₀ Triaxial Creep Properties of Remolded Q₃ Loess[J]. Bulletin of Soiland Water Conservation, 2016, 36(3): 56-61. DOI： 10.13961/j.cnki.stbctb.2016.03.011.

摘要

［目的］研究陕西省延安地区重塑Q

黄土高填方工程的后期沉降变形特性，为高填方工程的设计、施工提供一定的技术和理论支撑。［方法］通过改进K

三轴蠕变仪，对所取黄土进行了不同压实度、不同含水量、不同竖向应力下的室内土的静止侧压力系数K

三轴固结排水蠕变试验。［结果］重塑Q

黄土具有明显的蠕变特性，在低应力条件下，呈现出典型的衰减蠕变；在K

条件下，随着含水量增大、竖向应力的增大，压实度的减小，蠕变呈增强趋势，蠕变变形量增大；在低水平应力的条件下，土体所受侧向应力与竖向应力成线性关系。［结论］建立了重塑Q

黄土关于竖向应力的自定义蠕变模型，通过试验数据拟合获得了模型参数，所建模型能很好地描述延安地区重塑Q

黄土的蠕变特性。

Abstract

[Objective] To analyze the late settlement of high filled project in Yan'an District of Shaanxi Province in order to provide technological and theoretic support for the design and construction of high filled project.[Methods] A variety of laboratory consolidated drained static lateral pressure coefficient K0 triaxial creep tests were conducted under different water content

compacted degree and vertical stress by using a refitted K0 triaxial creepmeter.[Results] The remolded Q3 loess had an obvious creep properties

and it showed a typical attenuation creep under low stress level. Creep phenomenon showed an increase trend and the deformation of creep enlarged

with higher water content

higher pressure stress and smaller compacted degree. Under low stress level

there was a linear relationship between lateral stress and vertical stress.[Conclusion] Based on the tested data

a user-defined creep model of remolded Q3 loess about vertical stress was established

and characteristic parameters were obtained by fitting test data. The established model can well describe the properties of remolded Q3 loess in Yan'an District.

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Keywords

references

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Experimental Study on K0 Triaxial Creep Properties of Remolded Q3 Loess

DOI：10.13961/j.cnki.stbctb.2016.03.011

摘要

Abstract

关键词

Keywords

references

Experimental Study on K₀ Triaxial Creep Properties of Remolded Q₃ Loess