Optimized Design of Piled Embankment Using a Multi-Effect Coupling Model on a Coastal Highway

Zhang, Aobo; Liu, Zhen; Zhou, Cuiying; Zhang, Lihai

doi:10.3390/jmse10091170

Cited by 2 publications

(2 citation statements)

References 21 publications

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“…Highway However, there have been fewer studies on roadbeds in cold regions, especially regarding the mechanics and deformation mechanism of thawed soil after freeze-thaw cycles. The current research mainly focuses on the thermal insulation properties of roadbeds [19], changes in moisture content [20,21], vehicle loading [22,23], improvement treatments [24][25][26], and the effects of multi-field coupling [27].…”

Section: Railwaymentioning

confidence: 99%

Experimental Study on Mechanical Properties of Highway Subgrade in Cold Regions under Different Conditions

Wang,

Li,

Jia

et al. 2024

Applied Sciences

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In order to study the changes in the mechanical properties of road subgrade in cold areas after the freezing and thawing of highways in cold areas, indoor mechanical tests were carried out to investigate the effects of the number of freeze–thaw cycles, freezing temperature, water content, and circumferential pressure on the mechanical properties of road subgrade soil in cold areas after thawing. The mechanical properties of road subgrade soil in cold areas after thawing were measured under different conditions. The test results show that, within the study range: (1) After 7 freeze–thaw cycles, the destructive stress of the subgrade soil decreased from 321.7 kPa to 289.9 kPa, a decrease of 9.9%, and the elastic modulus decayed by 19.9%. (2) When the freezing temperature was reduced from −5 °C to −15 °C, the destructive stress of the subgrade soil decreased from 303.9 kPa to 290.1 kPa, a decrease of 13.8 kPa, approximately 4.5%, and the decrease in modulus of elasticity was about 1.6%. (3) The water content increased from 6% to 12%, and the destructive stress decreased from 405.43 kPa to 288.4 kPa, a decrease of 29.1%, and the modulus of elasticity decreased approximately linearly, with an attenuation of 50.4%. (4) The peripheral pressure increased from 50 kPa to 150 kPa, and the destructive stress increased from 194.7 kPa to 367.7 kPa, a growth of 88.8%, and its modulus of elasticity increased with the increase in peripheral pressure, an increase of 154.1%. The results of this research can provide a reference for highway and engineering construction in the western silt–soil distribution area.

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Section: Railwaymentioning

confidence: 99%

Experimental Study on Mechanical Properties of Highway Subgrade in Cold Regions under Different Conditions

Wang,

Li,

Jia

et al. 2024

Applied Sciences

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show abstract

“…However, there are few studies on highway subgrade in cold regions, especially on the mechanics and deformation mechanism of thawed soil after freeze-thaw cycles. At present, the research on d mainly focuses on the thermal insulation performance of highway subgrade ( 22,23 ), moisture change ( 24,25 ), vehicle load ( 26,27 ), modi ed treatment ( 28-30 ), multield coupling ( 31,32 ) and other elds. Therefore, in this paper, the mechanical properties of subgrade soil in cold regions after thawing under different conditions were measured by indoor mechanical tests.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on mechanical properties of subgrade soil in cold region under different conditions

Wang,

Li,

Jia

et al. 2023

Preprint

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In order to study the change of mechanical properties of subgrade under the condition of thawing after the highway in cold region is subjected to freeze-thaw action all the year round. In this paper, the effects of freeze-thaw cycles, freezing temperature, water content and confining pressure on the mechanical properties of subgrade soil in cold regions after thawing were studied by carrying out indoor mechanical tests, and the mechanical properties of subgrade soil in cold regions after thawing under different conditions were measured. The test results show that : 1 ) after 7 freeze-thaw cycles, the failure stress of subgrade soil decreases from 321.7 kPa to 289.9 kPa, with a decrease of 9.9%, and the elastic modulus decreases by 19.9%. 2 ) When the freezing temperature is reduced from − 5°C to − 15°C, the failure stress of subgrade soil is reduced from 303.9 kPa to 290.1 kPa, which is reduced by 13.8 kPa. The reduction range is about 4.5%, and the elastic modulus is about 1.6%;3 ) When the water content increased from 6–12%, the failure stress decreased from 405.43 kPa to 288.4 kPa, with a decrease of 29.1%, and the elastic modulus decreased approximately linearly, with a decrease of 50.4%. 4 ) When the confining pressure increases from 50 kPa to 150 kPa, the failure stress increases from 194.7 kPa to 367.7 kPa, and the failure stress increases by 88.8%. The elastic modulus increases by 154.1% with the increase of confining pressure. The research results can provide reference for highway and engineering construction in the western silty sand distribution area.

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Optimized Design of Piled Embankment Using a Multi-Effect Coupling Model on a Coastal Highway

Cited by 2 publications

References 21 publications

Experimental Study on Mechanical Properties of Highway Subgrade in Cold Regions under Different Conditions

Experimental Study on Mechanical Properties of Highway Subgrade in Cold Regions under Different Conditions

Experimental study on mechanical properties of subgrade soil in cold region under different conditions

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