The Diversities and Unities of Thermodynamic Function Expressions for Simple Systems

Zhao, Shihua

doi:10.4028/www.scientific.net/amr.468-471.2728

Cited by 2 publications

(3 citation statements)

References 5 publications

(5 reference statements)

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“…The formation of the embankment and the site geological conditions as well as the numerical model shown in Fig. 1 were selected nearly the same as that described by Zhao [8] and detailed here again. The existing embankment consists of a 0.3 m thick concrete-asphalt layer, followed by a 3.2 m thick gravel-clay mixture and a layer of crushed stone base with a thickness of 0.5 m. The existing embankment has a height of 4.0 m, a top width of 13 m and a bottom width of 25 m. The widening embankment has a same height and configuration as the existing embankment which was widened an additional lane of 4.5 m on both sides and the original side slope geometry maintained unchanged.…”

Section: Numerical Modelmentioning

confidence: 99%

“…Recently, PHC piles are increasing widely used to support the embankment on soft soils. Although many research works have been done on the mechanism of these methods in improving the soft soils [1,2] as well as the mechanism of widening of the existing embankment [3][4][5][6][7][8], little documentation exists regarding the effect of different soil treatment methods used in highway widening projects. This paper conducted a numerical analysis to explore which method, the PVDs, the stone columns or the rigid piles, is the most efficient way in reducing the differential settlements between the existing and widened embankments on thick soft soils.…”

Section: Introductionmentioning

confidence: 99%

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Comparison of the Effect of Soil Treatment Methods Used in Highway Widening Projects

Zhao

Cao

Shi

2013

AMR

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The rapid development of China’s economics makes it urgent to widen the existing highways especially those located in the south-eastern coastal areas over thick soft soils. Adding a new embankment adjacent to the existing highway embankment is a cost effective choice compared with the traditional methods to build another new one and can reduce the heavy traffic pressure. However, it may also cause some engineering problems including the excessive settlements settlements, road cracks, excessive tensile stresses on the pavement even local or global instability of embankments. So some proper measures should be taken to solve the problems caused by widening is of great importance in engineering practice. A numerical analysis was performed to investigate the effect of different kinds of soft soil treatments including rigid piles, stone columns and prefabricated vertical drains (PVDs) usually used in highway widening projects located in the thick soft soils. It was found that the rigid piles can effectively reduce the additional settlements of the existing embankment induced by widening as well as the settlements of the widened embankment. While the stone columns and PVDs play little role in controlling the additional settlements caused by widening.

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Section: Numerical Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparison of the Effect of Soil Treatment Methods Used in Highway Widening Projects

Zhao

Cao

Shi

2013

AMR

View full text Add to dashboard Cite

show abstract

“…The formation of the embankment and the site geological conditions as well as the numerical model shown in Fig. 1 were selected the same as that described by Zhao [8] and detailed here again. The existing embankment consists of a 0.3 m thick concrete-asphalt layer, followed by a 3.2 m thick gravel-clay mixture and a layer of crushed stone base with a thickness of 0.5 m. The existing embankment has a height of 4.0 m, a top width of 26 m and a bottom width of 38 m. The widening embankment has a same height and configuration as the existing embankment which was widened an additional lane of 4.5 m on both sides and the original side slope geometry maintained unchanged.…”

Section: Numerical Modelmentioning

confidence: 99%

Influence of Widened Embankment on the Slope of Existing Pavement on Soft Soils

Cao

Shi

2012

AMM

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Adding a new embankment adjacent to the existing highway embankment is a cost effective choice compared with building another new one and can mitigate the heavy traffic pressure. However, it may also cause some engineering problems including the change of slope of existing pavement or even local or global instability of embankments especially those on soft soils. How to prevent excessive change of the slope of the existing pavement induced by widening the existing embankments is of great importance in engineering practice. A numerical analysis by using a commercial FEM program was performed to explore the influence of the thickness of soft foundation soils, the widening width and the embankment height as well as the starting time of widening construction on the slope of the existing pavement. The results indicate that the bigger the thickness of the foundation soils as well as the bigger the widening width will result in bigger values of the slope of the existing pavement, especially at the early period of reconsolidation. Adverse slope will be induced by widening of the existing embankment.

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The Diversities and Unities of Thermodynamic Function Expressions for Simple Systems

Cited by 2 publications

References 5 publications

Comparison of the Effect of Soil Treatment Methods Used in Highway Widening Projects

Comparison of the Effect of Soil Treatment Methods Used in Highway Widening Projects

Influence of Widened Embankment on the Slope of Existing Pavement on Soft Soils

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