Numerical analysis of geocell-reinforced retaining structures

Chen, Rong‐Her; Wu, Changping; Huang, Feng-Chi; Shen, Che-Wei

doi:10.1016/j.geotexmem.2013.07.003

Cited by 46 publications

(7 citation statements)

References 15 publications

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“…At present, the geocell is widely used in many engineering projects worldwide to deal with uneven settlement, improve pavement performance, slope protection, and retaining wall reinforcement and has achieved good benefits [1]; many related scholars have conducted research on the application of geocells in different fields. Some scholars used the numerical simulation and field test to analyze the reinforcement effect of geocell; Isik and Gurbuz concluded that the pullout capacity of geocell reinforcement in cohesionless soils is limited to the seam peel strength at junctions of longitudinal and transverse of geocell strips [2]; Venkateswarlu et al found that the lateral spreading of vibrations can be significantly controlled in the presence of geocell reinforcement [3]; Tafreshi and Dawson came to a conclusion that the geocell reinforcement system behaves much stiffer and carries greater loading and settles less than does the equivalent planar reinforcement system from laboratory model tests [4]; Mehrjardi and Motarjemi studied the application of geocell in granular soil and found that geocell can effectively improve the shear strength characteristics at the interface of granular soil [5]; some researchers have analyzed the engineering application of geocell; Liu et al found that geocell can effectively improve the stability of the slope reinforced by antislide piles and proposed that, after the geocells are set up, the pile spacing can be appropriately increased to achieve the purpose of reducing the project cost [6]; Kazemian used the three-dimensional strength reduction method to analyze the stability of the geocell slope under local loads and proposed that the safety factor will improve as the length of the geocell layer increases up to a certain length and ceases to develop afterwards [7]; the performance of geogrid-reinforced retaining structures with various layouts was analyzed by FLAC, and the results show that a wall with a facing angle less than 80°will significantly reduce the lateral displacement of the wall face [8]; Tafreshi et al carried out experimental simulation on circular foundations of noncohesive soil reinforced by multilayer geocells and obtained a simplified method for predicting foundation settlement [9]; Liu and Jia conducted a sensitivity analysis on the stability of the geogrid retaining wall and concluded that the internal friction angle of the fill is the most critical factor to ensure the safety and stability of the reinforced retaining wall [10].…”

Section: Introductionmentioning

confidence: 99%

Deformation of the Geocell Flexible Reinforced Retaining Wall under Earthquake

Zhu

Tan

Yin

et al. 2021

Advances in Civil Engineering

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As a new type of reinforced material, geocells are widely used in flexible reinforced retaining wall projects, and a lot of practical experience shows that the geocell retaining wall has a great effect on earthquake resistance, but theoretical research lags behind engineering practice, and the deformation and failure mechanism under earthquake need to be further studied. In this paper, we use the FLAC3D nonlinear, finite-difference method to study the failure mechanism of geocell-reinforced retaining walls under earthquake, to analyze the advantages of the geocell retaining wall in controlling deformation compared with the unreinforced retaining wall and geogrid-reinforced retaining wall, and we try to study the deformation of the reinforced wall by changing the length of the geocell and reinforcement spacing of the geocell. Research indicates the horizontal displacement of the wall edge of the reinforced retaining wall under the earthquake is slightly smaller than that of the center of the wall and the back of the wall. The geocell can effectively reduce the horizontal displacement of the retaining wall, and the effect is better than the geogrid. Increasing the length of the geocell and reducing the spacing of the geocell can effectively reduce the horizontal displacement of the retaining wall, and the effect of displacement controlling at the top of the wall is better than in other positions.

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Section: Introductionmentioning

confidence: 99%

Deformation of the Geocell Flexible Reinforced Retaining Wall under Earthquake

Zhu

Tan

Yin

et al. 2021

Advances in Civil Engineering

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“…A surface-to-surface contact is employed to define the interfaces. Chen et al [37] indicated that the interface friction angle between two geocell-reinforced sand layers is equal to the friction angle of sand because the thickness of the geocell wall was small enough. erefore, the friction angle is specified as 25°.…”

Section: Finite Element Simulationmentioning

confidence: 99%

Ecological Retaining Wall for High‐Steep Slopes: A Case Study in the Ji‐Lai Expressway, Eastern China

Jiang

Zuo

et al. 2020

Advances in Civil Engineering

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Research on the retaining structures for high-steep slopes is extremely significant because of its real-world applications and far-reaching implications. A flexible geocell-reinforced ecological retaining wall as a high-steep slope protection scheme was developed and applied to the slope protection project of the Ji-Lai Expressway by analyzing the reinforcement mechanism of the geocell used. The lateral displacement and Earth pressure distribution on the flexible ecological retaining wall applied to the high-steep slope were studied using finite element numerical simulations and verified using field experiments. Results reveal that the wall maximum horizontal displacement is 2/3 H away from the wall toe because of the replacement of the upper part of soil. There is an obvious bucking effect on the active Earth pressure around the stiffened site, and the flexible deformation of the retaining wall helped effectively release some of the Earth pressure. Consequently, the measured value is lower than the theoretical value. Through this case study, it is demonstrated that the flexible ecological retaining wall as a slope protection technology can be successfully applied to steep slopes with a height of more than 15 m. Moreover, it brings significant advantages for protecting the ecological environment and improving the highway landscape.

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“…Song et al (2011) analyzed the effects of the aspect ratio, slope inclination angle and surcharges on the deformation behavior of the geocell retaining wall by the numerical analysis [21]. Chen et al (2013) assessed the stability and deformation of geocell structures with various layouts by numerical analysis [22]. Song et al (2013a) investigated the failure process of the geocell reinforced retaining wall with surcharge acting on the backfill surface by means of the centrifugal model tests [23].…”

Section: The Civil Engineering Journal 4-2016 -----------------------mentioning

confidence: 99%

“…29],Rajagopal et al (2001) [30],Latha et al (2006) [31],Latha and Rajagopal (2007) [32],Latha et al (2008) [33],Xie and Yang et al (2009) [19],Latha et al (2009) [34],Chen et al (2013) [22],Mehdipour et al (2013) …”

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confidence: 99%

Numerical Analysis of the Effect of Surcharge on the Mechanical Behavior of Geocell Reinforced Retaining Wall

Song¹,

Chai²,

Zhao³

et al. 2016

CEJ

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Geocell reinforced retaining structure has been widely used in civil engineering for the protection of slopes due to its advantages. In this paper, the effects of surcharge on the horizontal displacement of the wall back, the size of the sliding wedge and the factor of safety of geocell reinforced retaining wall are numerically analyzed by employing the geotechnical finite element method software Plaxis. The research results show that, when the distance of surcharge from the wall face is small, the maximum and the minimum deformation of the wall back takes place near the top of the wall and the wall bottom respectively. After the distance of surcharge from the wall face exceeds about 13% of the wall height, the surcharge has little effect on the horizontal deformation of the wall back, the size of the sliding wedge and the safety factor of geocell reinforced retaining wall. The horizontal deformation of the wall back gradually increases with the increase of the length of the surcharge until it reaches a certain value. The effect of the length of the surcharge on the failure surface is not significant. Besides, the factor of safety of the wall gradually decreases with the increase of length of the surcharge. However, with the increase of the distance of the surcharge from the wall face, the influence of the length of the surcharge on the safety factor gradually becomes small. The study results can supplement theoretical basis for the design of geocell reinforced retaining walls in engineering practices.

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Numerical analysis of geocell-reinforced retaining structures

Cited by 46 publications

References 15 publications

Deformation of the Geocell Flexible Reinforced Retaining Wall under Earthquake

Deformation of the Geocell Flexible Reinforced Retaining Wall under Earthquake

Ecological Retaining Wall for High‐Steep Slopes: A Case Study in the Ji‐Lai Expressway, Eastern China

Numerical Analysis of the Effect of Surcharge on the Mechanical Behavior of Geocell Reinforced Retaining Wall

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