Numerical investigation of stone columns in liquefiable soils

Sarımurat, Sacit; Işık, Nihat; Taşan, H. Ercan; Fırat, Seyhan

doi:10.1007/s12517-022-09804-x

Cited by 4 publications

(4 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The findings of Sarmurat et al [25] that indicated the preventative impact of using stone columns are consistent with the results. They demonstrated that this beneficial effect was more pronounced when the area ratio and relative density were raised.…”

Section: Resultssupporting

confidence: 87%

A Numerical Study on the Behavior of Stone Columns With Different Area Ratios in Soft Clays

Baqir

2024

GEOMATE

View full text Add to dashboard Cite

The single floating stone column behavior in very soft soils with a low undrained shear strength of Cu ≤ 20 kN/m2 was studied in the finite-element method to investigate the influence of stone column's area ratio on the normalized pressure-settlement curves of circular footings of different diameters. The studied cases consist of stone columns of 1.0 m in diameter Ds and lengths Ls of (4 m, 6 m, and 7.5 m). The diameter of footings Df is (1.0 m, 1.2 m, 1.4 m, 1.6 m, 2.0 m, 2.5 m, and 3.5 m) which covers the area ratios with a range of 100 to 8.16 %. A total of 28 runs were carried out using the Ansys program to simulate the case for improved and unimproved soil. In the axisymmetric numerical model, the connection between the stone column and the adjacent contact clay soil was modeled as bonded type. The results of the analysis showed that there is a clear relationship between the bearing ratio (q/cu improved) / (q/cu unimproved) and the normalized settlement (S/Df) of the composite structure and the area ratio Ar% of the stone columns. The deformation ratio (Streated/Suntreated) and the footing diameter are related using a straightforward equation. In comparison to footings with a low area ratio, the footing displays a lower value of settling when subjected to the same pressure. By decreasing the diameter of the footing, the normalized settlement decreases for the same normalized q/cu values. The bearing ratio depends on the stone column length ratio Ls/Ds and settlement ratio. It is from 2.2 at a 100% area ratio and 1.23 at a 16% area ratio.

show abstract

Section: Resultssupporting

confidence: 87%

A Numerical Study on the Behavior of Stone Columns With Different Area Ratios in Soft Clays

Baqir

2024

GEOMATE

View full text Add to dashboard Cite

show abstract

“…26 Accurately describing soil behavior using finite element modeling requires selecting appropriate structural models that describe the various aspects of soil behavior in detail. 27,28 Therefore, selecting a model that best represents the soil properties is a significant responsibility for researchers. However, due to the complex behavior of soils, there is currently no soil model that fully describes soil behavior.…”

Section: Model and Methodsmentioning

confidence: 99%

“…The study of soil behavior is challenging due to its complex, time‐dependent, and nonlinear nature under stress 26 . Accurately describing soil behavior using finite element modeling requires selecting appropriate structural models that describe the various aspects of soil behavior in detail 27,28 . Therefore, selecting a model that best represents the soil properties is a significant responsibility for researchers.…”

Section: Model and Methodsmentioning

confidence: 99%

“…The model was extended by adding five intergranular unit deformation parameters to calculate the pore water accumulations under cyclic loading. Information about the model's 13 parameters is available from many sources, such as Niemunis and Herle, 25 Tasan, 10 and Sarımurat et al 28 Therefore, this study refrains from providing a detailed description of these parameters to avoid redundancy. In this model, in which the void ratio (

e

) is introduced as a state variable, more realistic results are obtained under cyclic loads, especially considering the change in the unit weight of the soil and the effect of the stress level on the soil behavior.…”

Section: Model and Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Investigation of the effects of cyclic lateral load characteristics on monopiles in saturated sandy soils using hypoplastic material model

Sarımurat

2023

Wind Energy

View full text Add to dashboard Cite

Offshore wind turbines play a critical role as a renewable energy source and are experiencing continuous growth in usage. Both the design and implementation phases of constructing these structures present difficulties. It is crucial to ensure these structures are built to resist such conditions, assuring their durability, as they are exposed to lateral external influences such as wind and wave loads. This study investigated how monopile foundations behave in saturated sandy soil under cyclic loading. Pore water pressure accumulations in saturated sandy soil, monopile head lateral displacements, and vertical settlements around the monopile are investigated using the hypoplastic material model and two‐phase element with the ANSYS finite element program. Analyses conducted in this study demonstrated that lateral cyclic loads could cause excessive pore water pressure accumulations around the monopile, leading to displacements in the monopile head and soil settlements around it, highlighting the importance of carefully considering loading characteristics during the design process to provide the security and longevity of offshore wind turbines.

show abstract

Multi-objective analysis of the Sand Hypoplasticity model calibration

Mendez,

Sciarra

et al. 2024

Acta Geotech.

View full text Add to dashboard Cite

Numerical investigation of stone columns in liquefiable soils

Cited by 4 publications

References 28 publications

A Numerical Study on the Behavior of Stone Columns With Different Area Ratios in Soft Clays

A Numerical Study on the Behavior of Stone Columns With Different Area Ratios in Soft Clays

Investigation of the effects of cyclic lateral load characteristics on monopiles in saturated sandy soils using hypoplastic material model

Multi-objective analysis of the Sand Hypoplasticity model calibration

Contact Info

Product

Resources

About