STUDY ON THE VIBROFLOTATION MECHANISM OF LOOSE SILTY FINE SANDS WITHOUT ADDITIONAL BACKFILL

Yao Zhixiong

doi:10.13204/j.gyjz201202021

Volume 42 Issue 2

Dec. 2014

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2012 > 42(2): 92-96,146

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Yao Zhixiong. STUDY ON THE VIBROFLOTATION MECHANISM OF LOOSE SILTY FINE SANDS WITHOUT ADDITIONAL BACKFILL[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(2): 92-96,146. doi: 10.13204/j.gyjz201202021

Citation:

Yao Zhixiong. STUDY ON THE VIBROFLOTATION MECHANISM OF LOOSE SILTY FINE SANDS WITHOUT ADDITIONAL BACKFILL[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(2): 92-96,146. doi: 10.13204/j.gyjz201202021

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STUDY ON THE VIBROFLOTATION MECHANISM OF LOOSE SILTY FINE SANDS WITHOUT ADDITIONAL BACKFILL

doi: 10.13204/j.gyjz201202021

Yao Zhixiong^1,2,3

1.
1. Fujian Research Institute of Communications Science and Technology,Fuzhou 350004,China;
2.
2. Key Laboratory of Highway and Waterway Engineering in Fujian Province,Fuzhou 350004,China;
3.
3. Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China

Received Date: 2011-11-18
Publish Date: 2012-02-20

Abstract

Abstract

The application of vibroflotation without additional backfill treatment in silty fine sands is not so common．Combined with one key project in Shanghai，the engineering properties of saturated loose silty fine sands wereinvestigated through in-situ vibroflotation test． The effect of initial underground water level，dissipation regularity ofpore water pressure， effects of cone penetration test ( CPT) and standard penetration test ( SPT) were explored．Research shows that the treatment effect is not so good if the underground water level is too low，and the pore waterpressure generated during vibroflotation is related closely with the vibroflotation points and frequency，and foundationcapability is greatly improved after treatment． Summarizing the rest results，some rational construction techniques and parameters were suggested． Research testified the applicability of vibroflotation without additional backfill treatment in saturated silty fine sands．
- silty fine sand,
- vibroflotation,
- pore water pressure,
- cone penetration test,
- construction techniques

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References(10)

References

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