Load Bearing Capacity of Cohesive-Frictional Soils Reinforced with Full-Wraparound Geotextiles: Experimental and Numerical Investigation

Sukmak, Gampanart; Sukmak, Patimapon; Horpibulsuk, Suksun; Hoy, Menglim; Arulrajah, Arul

doi:10.3390/app11072973

Cited by 10 publications

(3 citation statements)

References 46 publications

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“…The evaluation of the bearing capacity for footings is an essential problem in geotechnical engineering. In recent years, the bearing capacity of footings in clay or sand is often researched by many investigators using analytical or numerical methods with a linearly elastic-perfectly plastic constitutive model [9][10][11][12][13][14][15]. However, the bearing capacity of footings in strain-softening materials (e.g., soft rock) is seldom studied [16].…”

Section: Introductionmentioning

confidence: 99%

Effect of Intermediate Principal Stress on the Bearing Capacity of Footings in Soft Rock

Dang

Liao

2021

Coatings

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The bearing capacity for footings is a fundamental scientific problem in civil engineering. The evaluation of the bearing capacity of footings usually does not take into account the effect of the intermediate principal stress. In practice, the intermediate principal stress has certain influences on the strength of geomaterials (e.g., rock and soil) or concrete. In this paper, a series of numerical solutions are presented to evaluate the bearing capacity of footings in a soft rock foundation via a two-dimensional finite difference code (FLAC) with a strain hardening/softening constitutive model based on the unified strength theory (UST). The values of the bearing capacity factor Nc and Nγ for strip, circular and square footings in a soft rock foundation were evaluated using the strain hardening/softening constitutive model. The effect of the intermediate principal stress on the bearing capacity of strip, circular and square footings in a soft rock foundation was analyzed. The results of the numerical computation show that the intermediate principal stress has a significant influence on the bearing capacity and failure mechanisms of a soft rock medium. The influence of the intermediate principal stress on the peak and residual values of the bearing capacity for a strip footing is much greater than for circular and square footings. Research works for the reasonable estimation of the bearing capacity of footings in soft rock are facilitated by this study.

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Section: Introductionmentioning

confidence: 99%

Effect of Intermediate Principal Stress on the Bearing Capacity of Footings in Soft Rock

Dang

Liao

2021

Coatings

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“…Measures used to mitigate sinkhole hazards, such as soil-filling, grouting, or the use of deep foundations can be time-consuming and costly [7][8][9]. To overcome these disadvantages, geosynthetic products have been increasingly used to create reinforced soil structures [10][11][12] and have been used as reinforcement layers to treat subsidence caused by sinkholes. A geosynthetic product acts as tensioned membrane that is combined with soil aching to support the upper soil mass [13][14][15][16], which has proven to be an effective alternative measure.…”

Section: Introductionmentioning

confidence: 99%

Application of a Geotextile in the Treatment of Post-Subsidence in Karst Areas

Luo

Li³

et al. 2021

Applied Sciences

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The use of a geotextile to treat subgrade subsidence after subsidence has occurred is investigated in this paper. To optimize the anchorage length and buried depth of the geotextile and evaluate the influences of the two factors on subgrade subsidence treatment, finite element analysis is performed and validated with existing model tests. The soil pressure, displacement, tensile force and deformation of the geotextile are studied. The results showed that the geotextile prevented an upward development of subsidence and stabilized the upper soil. The increase of the anchorage length of the geotextile transferred greater soil pressure from the subsidence to a stable area, induced a greater tensile force in the geotextile, and resulted in less soil displacement. As the anchorage length of the geotextile increased from 375 mm to 1500 mm, the surface settlement was effectively reduced from 1.05% to 34.18% when comparing to the situation without a geotextile. As the buried depth of the geotextile increased from 2 m to 6 m, the percentage of surface settlement was effectively reduced from 29.14% to 65.91% when comparing with the settlement corresponding to a buried depth of 2 m. It is suggested that the anchorage length of a geotextile should be the length of the subsidence with respect to width and that the buried depth of the geotextile should be 3–4 m for subsidence treatment. This provides insight into the treatment of sinkholes using geosynthetic approaches in karst areas.

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“…In the first paper, Sukmak et al [1] study the effects of several types of cohesivefrictional soil and geotextile reinforcement configurations on the bearing capacity via laboratory tests and numerical simulation. Several factors were studied, which included embedment depth of the top reinforcement layer, width of horizontal planar form of the reinforcement, spacing between geotextile reinforcement layers, and number of reinforcement layers.…”

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confidence: 99%