THE METHOD AND APPLICATION OF CENTRIFUGAL MODELING TO VERTICAL STRIP DRAINS IN SOFT FOUNDATION

WANG Cun; HOU Yu-jing; LIU Guo-bao; PENG Ren

2016 Vol. 22, No. 1

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Article navigation > Journal of Geomechanics > 2016 > 22(1): 125-134

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WANG Cun, HOU Yu-jing, LIU Guo-bao, PENG Ren. THE METHOD AND APPLICATION OF CENTRIFUGAL MODELING TO VERTICAL STRIP DRAINS IN SOFT FOUNDATION[J]. Journal of Geomechanics, 2016, 22(1): 125-134.

Citation:

WANG Cun, HOU Yu-jing, LIU Guo-bao, PENG Ren. THE METHOD AND APPLICATION OF CENTRIFUGAL MODELING TO VERTICAL STRIP DRAINS IN SOFT FOUNDATION[J]. Journal of Geomechanics, 2016, 22(1): 125-134.

THE METHOD AND APPLICATION OF CENTRIFUGAL MODELING TO VERTICAL STRIP DRAINS IN SOFT FOUNDATION

1.
Department of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, Beijing 100048, China
2.
CCCC Water Transportation Consultants Co., Ltd, Beijing 100007, China
3.
Department of Civil Engineering, Beihang University, Beijing 100191, China

Received Date: 26 October 2015

Publish Date: 25 March 2016

Abstract

Abstract

Centrifuge model tests were carried out to simulate the construction and operation of the dike on a soft soil foundation by using the geotechnical centrifuge in IWHR. The vertical strip drains in the foundation were simulated by a kind of model cylinder vertical drains, based on the principle of same consolidation degree in the foundation in average for both type of drains. During the model tests, the construction processes were simulated by loading dike materials layer by layer when the centrifuge stops running. Laser displacement sensors and the pore pressure transducers were installed for model measurement of settlement and pore pressure variation during tests. Based on the measured data, the final settlement of the dike was estimated by using experience hyperbolic method. And the consolidation degree of the foundation over time was also calculated, which indicates the average consolidation of the sludge and the sand under the dike. Comparing the consolidation degree of the soft foundation from the results of pore water pressure and that of the theoretical calculation, it shows that the simulation method of vertical strip drains presented in this paper is feasible and acceptable. The comparison of the model test results with that of theoretical calculation indicates that the strip drain simulation method described in this paper is acceptable.
- vertical strip drains /
- centrifugal model test /
- soft foundation /
- consolidation

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References

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