Permanent deformation prediction model of sandy soil under repeated load

Zhang Hong-liang; Guo Zhong-yin; Gao Qi-ju; Cong Lin

Volume 8 Issue 3

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Zhang Hong-liang, Guo Zhong-yin, Gao Qi-ju, Cong Lin. Permanent deformation prediction model of sandy soil under repeated load[J]. Journal of Traffic and Transportation Engineering, 2008, 8(3): 58-62.

Citation:

Zhang Hong-liang, Guo Zhong-yin, Gao Qi-ju, Cong Lin. Permanent deformation prediction model of sandy soil under repeated load[J]. Journal of Traffic and Transportation Engineering, 2008, 8(3): 58-62.

Citation:

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Permanent deformation prediction model of sandy soil under repeated load

1.
Key Laboratory for Road and Traffic Engineering of Ministry of Education, Shanghai 200092, China
2.
Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China

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Author Bio:
Zhang Hong-liang(1974-), male, PhD, associate professor, +86-29-82334453, l29@gl.chd.edu.cn

Guo Zhong-yin(1962-), male, professor, +86-21-65981430, zhongyin@mail.tongji.edu.cn
Received Date: 2008-01-27
Publish Date: 2008-06-25

Abstract

Abstract

In order to predict the permanent deformation of subgrade, a dynamic triaxial test of sandy soil under repeated load was made by using universal testing machine(UTM), the development curves of the deformation were got, the relationship formula between plastic strain and load acting time was found, the regression formulas among the coefficients of the relationship formula, water content and resilient modulus were fitted by using least square method, and their reliability was analyzed. Analysis result shows that when load acting time reaches 10 000, the minimum and maximum relative errors between permanent deformation prediction result and measured result are 52% and 376% respectively; the minimum and average correlative coefficients of the regression formulas are 0.31 and 0.41 respectively, which are greater than the critical value of 0.28, and the correlative coefficient between theoretical curve and measured one is more than 0.99. So the reliability of the proposed prediction formulas of permanent deformation for sandy soil is higher, but existing prediction model is not suitable for sandy soil.
- subgrade engineering,
- sandy soil,
- permanent deformation,
- repeated load test,
- prediction model

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References(16)

References

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