Experimental Investigation on the Behavior of Gravelly Sand Reinforced with Geogrid under Cyclic Loading

Wang, Jiaquan; Chang, Zhenchao; Xue, Jianfeng; Lin, Zhengzhong; Tang, Yi

doi:10.3390/app112412152

Cited by 4 publications

(3 citation statements)

References 46 publications

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“…The literature indicates that the majority of experimental studies on reinforced soils were carried out using small-scale laboratory tests [25][26][27]. Modeling the full-scale behavior of reinforced soil using small-scale laboratory tests can be challenging due to the scale effect [22,28].…”

Section: Objectives and Scopementioning

confidence: 99%

Evaluation of Rockfill Stabilized-Geosynthetics Reinforced Road Base with Repeated Plate Loading Tests

Demir,

Ok,

Sarici

2024

Applied Sciences

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In this study, the performance of unpaved road sections over soft clay soil geosynthetic-reinforced and stabilized with rock fill layer was evaluated using repeated plate loading tests. A total of 10 field tests were carried out using a circular model rigid plate with a diameter of 0.30 m. The parameters investigated included the location and type of geosynthetics and loading conditions (number of loading cycle and traffic loading condition). Based on the test results, the least deformation was observed in the rockfill section. The geocell placed at a depth of one-third thickness of the granular fill layer from the top showed improved performance and was more effective as compared with other geosynthetic reinforcements. However, for granular fill geosynthetic-reinforced or stabilized with rock fill layer, the results demonstrate an improvement in the rutting performance of the pavement and the definite trend of increasing reloading elastic modulus, depending on the traffic loading situation. It has been also observed that the use of geocell or geogrid reinforcement in granular fill layer or more rigid rockfill layer provides an important increase in the modulus improvement ratio (MIR) by at least 36%, 45% and 60% compared to the granular fill section, respectively.

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Section: Objectives and Scopementioning

confidence: 99%

Evaluation of Rockfill Stabilized-Geosynthetics Reinforced Road Base with Repeated Plate Loading Tests

Demir,

Ok,

Sarici

2024

Applied Sciences

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“…Both theoretical and experimental results show that the dynamic load caused by the train is a one-way pulse mode rather than a two-way sinusoidal mode. Many scholars adopted one-way pulse load, half-sine wave load [38] and sine wave load [39] to reflect the dynamic train load. When the train passes through, the dynamic load of the train on the reinforced soil wall can be regarded as a form of sine wave.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Behavior of Geogrid Flexible Reinforced Soil Wall Subjected to Dynamic Load

Lin,

Liu,

et al. 2024

Buildings

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The geogrid flexible reinforced soil wall is widely used in engineering practice. However, a more comprehensive understanding of the dynamic behavior of reinforced soil wall is still required for a more reasonable application. In order to explore the mechanical behavior of a geogrid flexible reinforced soil wall, the model test was carried out to investigate the dynamic deformation of geogrid reinforced soil wall subjected to a repeated load. The numerical simulation was also conducted for comparison and extension with regards to the earth pressure and the reinforcement strain. The change rules for the deformation of the wall face, the vertical earth pressure and the reinforcement strain subjected to dynamic load with four frequencies (4, 6, 8 and 10 Hz) and four amplitudes (30–60, 40–80, 50–100 and 60–120 kPa) were obtained. The factors that affect the mechanical behavior of geogrid flexible reinforced soil wall were analyzed. The results show that the dynamic deformation characteristics of reinforced soil wall are affected by the number of vibrations, the amplitude of dynamic load and the frequency of vibration. The maximum lateral displacement of the reinforced soil wall occurs on the third to the fifth layer. With an increase in dynamic load amplitude, the development of dynamic deformation gradually increases, and after a cumulative vibration of 200 × 104 times, the cumulative lateral deformation ratio and the cumulative vertical deformation ratio of the wall face is less than 1%. The vertical earth pressure of geogrid flexible reinforced soil wall increases partially along the length of the reinforcement, and the vertical earth pressure of the third layer is basically unchanged when subjected to a dynamic load. With an increase in vibration number, the change in the reinforcement strain of the third layer is more complex, and the change rules of the reinforcement strain of each layer are different. The reinforcement strain is small, with a maximum value of 0.1%.

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“…In a wide range of studies, traffic loads could be approximately equivalent to triangular waves and sine waves, and wave loads could be equivalent to rectangular waves [1]. With the increase in dynamic cyclic load amplitude, the dynamic strain, porosity and pore pressure of soil increase, the internal structure of soil is reshaped as well, which induces the stiffness degradation of soil [2][3][4]. Under the cyclic load, the cumulative deformation of soil varies with vibration cycles [5,6], and due to the nonlinearity of soil, the stiffness acts in a complicated manner [7,8].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Stiffness Degradation of Organic Matter-Disseminated Sand under Cyclic Loading

et al. 2022

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Degradation of stiffness will occur in sand under cyclic loading. Organic matter-disseminated sand (OMDS) is a special sand in the northeast and western coastal region of Hainan Island. Through the stress-controlled dynamic triaxial test, the natural moisture content, vibration amplitude and consolidation ratio of OMDS under three types of cyclic loads (sine wave, triangular wave and rectangular wave) were studied. The results showed that the soil stiffness decreases with the increase in vibration times. The increase in natural moisture content and vibration amplitude, and the reduction in the consolidation ratio accelerate the softening of soil stiffness. Furthermore, based on the test results, an empirical formula was derived to reflect the rule of soil stiffness softening.

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Experimental Investigation on the Behavior of Gravelly Sand Reinforced with Geogrid under Cyclic Loading

Cited by 4 publications

References 46 publications

Evaluation of Rockfill Stabilized-Geosynthetics Reinforced Road Base with Repeated Plate Loading Tests

Evaluation of Rockfill Stabilized-Geosynthetics Reinforced Road Base with Repeated Plate Loading Tests

Mechanical Behavior of Geogrid Flexible Reinforced Soil Wall Subjected to Dynamic Load

Experimental Study on Stiffness Degradation of Organic Matter-Disseminated Sand under Cyclic Loading

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