Evaluation of Grain Shape Parameters of Fujian Standard Sand

Li, Shuai; Zhou, Wan-Huan; Jing, Xue‐Ying; Zhu, Huaxiang

doi:10.1007/978-3-319-97112-4_42

Cited by 4 publications

(4 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1. These particles have well-rounded corners and edges, determining the mean roundness parameter at about 0.88 by the particle projection and the image processing procedures [the roundness herein is defined as (2 ) / AP  by Hentschel and Page (2003):  is the circular constant, A is the particle image projection area, P is the particle image projection perimeter; with the roundness value closer to 1, the particle shape is closer to a completely round one; see more details about the determination of the roundness of this sand in Li et al (2018)]. Then, the sieved soils with different grain sizes and mass fractions were mixed to obtain soil samples with different grain size distribution curves, as shown in Fig.…”

Section: Testing Materialsmentioning

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.

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Testing Materialsmentioning

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.

Self Cite

View full text Add to dashboard Cite

show abstract

“…A similar sand has been often used to simulate the liquefiable soil in model tests (e.g. [18,23,29]). The maximum dry density of the soil was measured at 1.67 Mg/m 3 with the optimum water content of 10.8% as per ASTM D698 [1] for standard Proctor test.…”

Section: Model Soilmentioning

confidence: 99%

Seismic response of end-bearing fibre-reinforced polymer (FRP) piles in cohesionless soils

Hosseini

Rayhani

2021

Innov. Infrastruct. Solut.

View full text Add to dashboard Cite

This study focuses on investigating seismic performance of hollow fibre-reinforced polymer (FRP) piles in liquefiable sand deposits using shaking table tests. A series of soil-foundation models were prepared in a laminar shear box with a dimension of 1.0 m × 1.0 m and a depth of 1.0 m following scaling relationships that recognize the dynamic and nonlinear nature of soil-pile systems. Four glass fibre-reinforced polymer (GFRP) piles and four carbon fibre-reinforced polymer (CFRP) piles were manufactured and embedded as end-bearing piles within the soil and tested under different seismic input motions. A group of four aluminium piles were also employed and tested under similar conditions to compare their response with FRP piles. The model soil was prepared following pluviation technique inside the laminar shear container while a thin flexible latex membrane was stretched inside the container to contain the soil and water. The cycles of shaking tests were carried out using ground motions from the 1995 Kobe Earthquake and the 2010 Central Canada Earthquake. Results of strong excitation (K20) indicated lower deviation of foundation to free field motions in the frequency range of 10-20 Hz and, hence, lower amplification of input motions for FRP piles (i.e. response spectra ratio of 1.45 to 2.20 times) due to higher flexibility of hollow FRP piles compared to conventional piles. Among the FRP piles, the glass FRP showed better performance than the carbon FRP piles in terms of soil-pile interaction and foundation input motions. Pile caps have also experienced smaller amplification for GFRP piles as a result of their higher flexibility along the pile shaft with peak acceleration of 0.3 g. Results indicated that hollow FRP pile can be a suitable alternative in liquefiable soils because of their favourable material characteristics in seismic prone area.

show abstract

“…Iai (1989) derived a comprehensive set of scaling relations for a soil-pile-structure system under the dynamic loading by defining scaling conditions for density, acceleration, displacement, length, moment curvature of pile (EI) scale factors can all be expressed in terms of the geometric scaling factor (λ), and a complete set of dimensionally correct scaling relations (ratio of prototype to model) can be derived for all variables being studied. The scaling relations for the variables contributing to the primary modes of system response are shown in Table 2.3 (e.g., Iai, 1989;Meymand, 1998;Turan and El Naggar, 2008;Moss et al, 2010;Sulaeman, 2010;Lee et al, 2012;Hokmabadi, 2014;Ling et al, 2014;Li et al, 2018).…”

Section: Scaling Factors For Shaking Table Testsmentioning

confidence: 99%

“…Scaled laboratory tests are used to comprehend the response of various foundations during liquefaction in controlled environment. Poorly graded sand was often used to simulate the liquefiable sand in model tests (e.g., Lie andChen, 1991;Nasr, 2014;Mashhouda et al 2018;Li et al 2018).…”

mentioning

confidence: 99%

Evaluation of Seismic Behaviour of Hollow Fibre-Reinforced Polymer (FRP) Piles using Shake Table Testing

Hosseini¹

View full text Add to dashboard Cite

This study aimed at investigating the seismic performance of hollow FRP piles compared to traditional piles in fine sand and soft clay deposits using shaking table tests. A laminar shear box with a dimension of 1.0 m × 1.0 m and a depth of 1.0 m was employed to contain the soil medium and allow the soil to respond in the same fashion as the free field. Two types of composite group piles (2×2) made of Carbon Fibre-Reinforced Polymer (CFRP) and Glass Fibre-Reinforced Polymer (GFRP) along with a series of Aluminium piles were manufactured and embedded as frictional and end-bearing piles within the soil. Several monitoring instruments were used to observe the soil-pile response under variety of ground motions adopted from the 2010 Val-des-Bois Earthquake in Canada and the 1995 Kobe Earthquake.Seismic response of the foundation was strongly dependent on the stiffness provided by the soil, which was a function of the degree of softening and intensity of shaking. In both soil Dedicated to my dear parents and my brothers…….v AcknowledgementsFirst and foremost, I would like to express my respect and gratitude to my supervisor, Professor Mohammad Rayhani, who has been a tremendous teacher, and mentor throughout my graduate studies at Carleton University. I will be forever grateful for his constant support, guidance, motivation, and patience throughout this work. I would like to thank my thesis examination committee Professor Charles-

show abstract

Evaluation of Grain Shape Parameters of Fujian Standard Sand

Cited by 4 publications

References 5 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

Seismic response of end-bearing fibre-reinforced polymer (FRP) piles in cohesionless soils

Evaluation of Seismic Behaviour of Hollow Fibre-Reinforced Polymer (FRP) Piles using Shake Table Testing

Contact Info

Product

Resources

About