Investigation on geogrid reinforcement and pile efficacy in geosynthetic-reinforced pile-supported track-bed

Wang, Hanlin; Chen, Ren Peng; Liu, Qi Wei; Kang, Xin

doi:10.1016/j.geotexmem.2019.103489

Cited by 33 publications

(10 citation statements)

References 38 publications

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“…In the field of geotechnical and geological engineering contents such as piled foundations, geosynthetic-reinforced structures, soil nailing projects and retaining walls, the soil-structure interaction plays a key role in the long-term performance of these constructed facilities (Abu-Farsakh et al 2007;Zhou and Yin 2008;Yin and Zhou 2009;Zhou et al 2011;Anubhav and Basudhar 2013;Chen et al 2013;Qian et al 2013;Zhou et al 2013;Arulrajah et al 2014;Divya et al 2014;Venkateswarlu et al 2018;Wang et al 2018a;Goodarzi and Shahnazari 2019;Wang and Chen 2019;Wang et al 2019aWang et al , 2019bWang et al , 2019c. Among the mechanical behaviors for the soil-structure interface, assessing the shearing behavior is of paramount importance, which thus attracts increasing attentions from researchers in the recent decades.…”

Section: Introductionmentioning

confidence: 99%

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

Wang

Zhou²,

Yin

et al. 2019

J. Mater. Civ. Eng.

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For the geotechnical construction and maintenance, assessing the shearing behavior at the soil-structure interface is significant. This study presents an experimental investigation about the effect of the grain size distribution of a sandy soil on the shearing behaviors at the soil-structure interface, using a modified direct shear apparatus. Five soil samples with different coefficients of uniformity were prepared.The normalized roughness of the structure surface (the ratio between the maximum roughness of the structure plate and the mean grain size of the soil), the relative density, the maximum, the mean and the minimum grain sizes of all samples were controlled the same. During the tests, the shear force, the shear displacement and the vertical displacement were monitored. The results show that at a given shear displacement and normal stress, the sample with lower coefficient of uniformity Cu presents higher shear stress and more pronounced dilative behavior. The increase of Cu leads to the decrease of the friction angle for the soil-structure interface (at both peak and ultimate states) and the decrease of the maximum vertical deformation of the soil sample during the shearing process. As Cu increases, the main force chain at the soil-structure interface turns from the contact between the coarser grains to that mainly formed by the finer grains, resulting in the decrease of the shearing resistance. In comparison with the previous relevant studies, the decreasing trend of the friction angle with the increase of Cu is strongly supported.

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Section: Introductionmentioning

confidence: 99%

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

Wang

Zhou²,

Yin

et al. 2019

J. Mater. Civ. Eng.

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“…Among the many current soil improvement methods, geosynthetics are commonly used in sand reinforcement in engineering and are widely used on slopes [2][3][4][5], retaining walls [6][7][8][9], dams, highways, railroad beds, and other projects. However, traditional soil reinforcement methods such as the unidirectional laying of geogrids [10][11][12][13][14][15][16], geotextiles [17][18][19][20][21][22][23], and other reinforcement materials can easily form potentially weak surfaces in the soil and increase its anisotropy. With the development 1335 (2024) 012011 IOP Publishing doi:10.1088/1755-1315/1335/1/012011 2 of the fiber industry, cost-effective chemical fiber products have been increasingly used in the engineering field; thus, fiber reinforcement as a new type of geotechnical reinforcement technology has received wide attention.…”

Section: Introductionmentioning

confidence: 99%

Analysis of basalt fiber reinforcement on static shear properties of Beibu Gulf sea sand

Wang,

He,

Tang

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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Basalt fibers are a reinforcing material with excellent mechanical properties and durability. In contrast, although Beibu Gulf sea sand is widely in engineering, it exhibits low strength and poor stability, which can be improved by adding basalt fibers. In this study, the effects of fiber content, fiber length, and effective confining pressure on the static shear strength of fiber-reinforced sea sand were investigated using a triaxial shear test. The maximum improvement on the static shear characteristics and deformation resistance of sea sand were achieved for a fiber content and length of 0.8% and 12 mm, respectively. The cohesion and internal friction angle of sea sand were improved and the secant modulus and strain before and after basalt fiber reinforcement showed a nonlinear attenuation tendency. The reinforcement effect coefficient R and the basalt fiber content under different dosages were in accordance with the law of the Gaussian function. The value of R conformed to a linear growth and exponential function law under different fiber lengths and effective confining pressures, respectively. This study provides a solid theoretical basis for the sustainable utilization of sea sand resources and fiber reinforcement for road and coastal protection engineering in the Beibu Gulf region.

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“…Regarding to the soil arching effect, significant research has been conducted in the literature [20][21][22][23][24][25][26][27][28][29][30]. As for the membrane effect, some guidelines have Sustainability 2023, 15, 619 2 of 19 been proposed to directly determine the maximum tensile force and strain of the reinforcement, which may significantly influence the serviceability behavior of the reinforced piled embankment [12,14,15,[31][32][33][34][35][36][37][38][39][40]. The research provides significant guidance regarding the design and construction of reinforced piled embankments; however, the deformation of geosynthetic reinforcements is usually assumed as an arc or catenary, without considering the subsoil support.…”

Section: Introductionmentioning

confidence: 99%

Ground Reaction of Lightly Overconsolidated Subsoil in Reinforced Piled Embankment under Cyclic Loads

2022

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Subsoil support is generally ignored in the design of reinforced piled embankments, resulting in a very conservative design for settlement control. This design philosophy may lead to an unnecessary increase in construction costs, especially for embankments constructed over subsoil of medium and high compressibility (i.e., compression index of subsoil larger than 0.2). This paper presents the ground reaction of lightly overconsolidated subsoil in a reinforced piled embankment subjected to cyclic loads for the purpose of investigating the general behavior of lightly overconsolidated subsoil, and it promotes the sustainable development of piled embankment technology. The ground reaction of subsoil under both static and cyclic loads was comprehensively analyzed in terms of settlement and incremental vertical stress, which exhibited approximately the same profile. However, the settlement of lightly overconsolidated subsoil under a cyclic load was 23% larger than that under a static load. A parametric study was then performed under cyclic loads, and the results showed that the vertical stress carried by the subsoil was the most sensitive to the pile spacing amongst all the parameters considered in this paper. The analysis demonstrated an approximately 88% increase in stress when spacing was enlarged from 2.0 to 3.0 m. Finally, a modified analytical method for the ground reaction of lightly overconsolidated subsoil under cyclic loads was presented, and it showed reasonable agreement with the numerical simulation, particularly for relatively low geogrid stiffnesses, low embankment height (<6.5 m), and small pile spacing (e.g., 2–3 m center to center).

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Investigation on geogrid reinforcement and pile efficacy in geosynthetic-reinforced pile-supported track-bed

Cited by 33 publications

References 38 publications

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

Effect of Grain Size Distribution of Sandy Soil on Shearing Behaviors at Soil–Structure Interface

Analysis of basalt fiber reinforcement on static shear properties of Beibu Gulf sea sand

Ground Reaction of Lightly Overconsolidated Subsoil in Reinforced Piled Embankment under Cyclic Loads

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