Vacuum Preloading Combined with Electroosmotic Dewatering of Dredger Fill Using the Vertical-Layered Power Technology of a Novel Tubular Electrokinetic Geosynthetics: Test and Numerical Simulation

At present, there are many methods of the dredger fill foundation treatment, in which the most widely used application of vacuum preloading method. The dredger fill for test was taken from the Tianjin Binhai new area center fishing port area, separately carried on the self-weight consolidation and vacuum preloading consolidation. Through the indoor test of soil test physical and chemical parameters, comparing the moisture content, soluble salt amount and component, caption exchange capacity, PH value and physical and chemical index. The results show that: the clay content of soil sample in the central fishing port area is higher, degree of aggregation is high, liquid limit is less than 60%, Ip is more than 10, belongs to the low liquid limit clay. Relative self-weight consolidation, soluble salt content of soil samples after vacuum preloading drainage treatment are low, but the particle size composition change less. It is said that parts of salt in the soil samples discharge with water discharge in vacuum preloading process, vacuum preloading effect is better. Introduction All manuscripts must be in English, also the table and figure texts; otherwise we cannot publish your paper.

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Numerical solutions for consolidation of under-consolidated dredger fill under vacuum preloading

Japanese Geotechnical Society Special Publication ◽

10.3208/jgssp.chn-29 ◽

2016 ◽

Vol 2 (10) ◽

pp. 425-429

Author(s):

Liqiang Sun ◽

Shuwang Yan ◽

ChangLin Qiu ◽

Tianqiang Jia ◽

Shilun Feng

Keyword(s):

Numerical Solutions ◽

Vacuum Preloading ◽

Dredger Fill

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Laboratory test on dredger fill reinforced by hierarchical vacuum preloading

2011 International Conference on Multimedia Technology ◽

10.1109/icmt.2011.6003259 ◽

2011 ◽

Author(s):

Xiaoqing Yuan ◽

Qing Wang ◽

Huie Chen ◽

Jing Song ◽

Sen Lin ◽

...

Keyword(s):

Laboratory Test ◽

Vacuum Preloading ◽

Dredger Fill

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Numerical Simulation of Dynamic Compaction at Dredger Fill Silty

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.446-449.1813 ◽

2012 ◽

Vol 446-449 ◽

pp. 1813-1816

Author(s):

Yang Liu ◽

Duo Zhang

Keyword(s):

Numerical Simulation ◽

Numerical Model ◽

Current Practice ◽

Field Trials ◽

Past Experience ◽

Numerical Results ◽

Dynamic Compaction ◽

Empirical Equations ◽

Dredger Fill

Current practice of Dynamic compaction (D.C) depends mainly on field trials, past experience, and empirical equations based on reported records. In this paper, a numerical model is used to study the effectiveness of supplemental drains on densification of saturated dredger fill silty deposits during D.C. Typical numerical results are discussed using propose numerical model.

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A Study on Pore Diameter Distribution of Saliniferous Dredger Fill Consolidated by Vacuum Preloading

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.301-303.1511 ◽

2011 ◽

Vol 301-303 ◽

pp. 1511-1516 ◽

Cited By ~ 3

Author(s):

Xiao Qing Yuan ◽

Qing Wang ◽

Yu Bin Xia ◽

Jing Song ◽

Sen Lin

Keyword(s):

Bearing Capacity ◽

Pore Diameter ◽

Decisive Role ◽

Total Pore Volume ◽

Engineering Properties ◽

Diameter Distribution ◽

Vacuum Preloading ◽

Consolidation Effect ◽

Dredger Fill ◽

The One

The pore structure of soil plays a decisive role in its engineering properties. In order to investigate the consolidation effect and pore distribution characteristic of saliniferous dredger fill after vacuum preloading, the indoor simulation experiments of vacuum preloading were carried out in two boxes, after vacuum preloading, the dredger fill was tested for its physicochemical and mechanical properties. Simultaneously, the mercury intrusion porosimetry was performed to obtain distribution of pore characteristic parameters, and analyzed its pore diameter distribution of dredger fill after vacuum preloading and the consolidation effect in the perspective of micro and macro. The research showed that the total pore volume and porosity of the No.1 box is lower than the No.2 box, and its bearing capacity and consolidation effect are much higher. When the dredger fill locates at the same distance from drainage plate, the deeper the dredger fill is buried, the smaller the porosity is, the better the bearing capacity and consolidation effect are. The pore of dredger fill in No.1 box is based mainly on meso pore, while the one in No.2 box is based mainly on meso pore and macro pore.

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