Measures of slope stability in bonded soils governed by linear failure criterion with tensile strength cut-off

Park, Dowon

doi:10.1016/j.compgeo.2023.105610

Cited by 8 publications

(3 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, using improvement or replacement methods can cause significant cost increases and environmental pollution [ 4 , 5 , 6 ]. Therefore, roadbed construction in red clay areas can easily lead to roadbed settlement, shoulder collapse, slope instability, and other engineering defects [ 7 , 8 , 9 ]. Therefore, how to efficiently handle and apply this type of soil is an urgent engineering problem that needs to be solved.…”

Section: Introductionmentioning

confidence: 99%

Influence Mechanism of Water Content and Compaction Degree on Shear Strength of Red Clay with High Liquid Limit

Feng,

Teng,

Wang

2023

Materials

View full text Add to dashboard Cite

To investigate the influencing factors and mechanisms of shear strength of red clay with a high liquid limit, which was selected at different milepost locations based on the Nanning Bobai Nabu Section Project of the Nanning Zhanjiang Expressway, the basic physical properties of red clay were determined using a liquid plastic limit test, compaction test, inductively coupled plasma optical emission spectrometer (ICP-OES), and X-ray fully automatic diffractometer (XRD). Red clay with a high liquid limit was selected. Furthermore, the direct shear test was used to study the effect of different water contents and compaction degrees on the shear strength. The experimental results demonstrate that under the same compaction degree, the shear stress of the soil sample increases significantly with an increase in normal stress, and the greater the water content, the smaller the shear stress of the soil sample. At 200 kPa, the shear strength of soil samples with 24% water content is 57%, 46%, and 35% of the shear strength of soil samples with 15% water content under different compaction degrees(K) of 86%, 90%, and 93%, respectively. Under the same moisture content, the shear stress of the soil sample shows an increasing trend with an increase in the degree of compaction, and the greater the compaction degrees, the greater the shear stress of the soil sample. The cohesion c and internal friction angle φ of soil samples increase with an increase in the compaction degree, but the increase in cohesion c is also affected by the water content. Under the condition of low water content, the cohesion c of soil samples can be increased by 1.06 times when the water content is 15% and by 0.47 times when the water content is 18%. Under the condition of high water content, the cohesion c of soil samples with 21% water content only increases by 0.3 times, and that with 24% water content only increases by 0.35 times.

show abstract

Section: Introductionmentioning

confidence: 99%

Influence Mechanism of Water Content and Compaction Degree on Shear Strength of Red Clay with High Liquid Limit

Feng,

Teng,

Wang

2023

Materials

View full text Add to dashboard Cite

show abstract

“…Tensile strength is one of the soil's basic material properties; it is too small and sensitive to measure. Although it is often ignored in strength tests of soil [1], the tensile strength of soil plays an important role in soil failure, for example, in tensile cracks associated with collapses and landslides in the processes of slope instability, in the tensile failure caused by the toppling of ground buildings or other appendages, and in the ground cracks caused by internal stress in soil [2][3][4][5][6]. The wetting and drying cycle of soil caused by rainfall is a common phenomenon in nature, which has a great influence on the tensile strength of the soil.…”

Section: Introductionmentioning

confidence: 99%

Effects of Drying and Wetting Process on the Tensile Strength of Granite Residual Soil

Tang

Cheng

Wang

et al. 2023

Water

View full text Add to dashboard Cite

The tensile strength of granite residual soil has different changing laws during the wetting and drying process which often appears after rainfall. The microscopic relationship between tensile strength, bond force, and absorbed suction was studied using a self-developed soil tensile strength tester. The results show the following. (1) The change in tensile strength with saturation is a convex curve with a peak; according to the drying and wetting path, there are differences in peak value and amplitude of variation. (2) The sample with a higher fine particle content has a structure that is denser and has fewer pores, while an increase in gravel content will significantly reduce the tensile strength of the soil. (3) Absorbed suction and bond forces are important factors that control tensile strength in the drying process. The bond force contributes more than 70%, the tensile strength is in invariable constant saturation, and the wetting process is mainly controlled by absorbed suction.

show abstract

“…Li et al [13,14] conducted (seismic) stability analysis of slope in both homogeneous and inhomogeneous disturbed rock masses, where a set of stability charts was proposed to estimate the FoS of slopes in disturbed rock masses. More recently, a series of failure mechanisms was proposed by Park and Michalowski [15][16][17] to introduce nonlinear strength criteria directly to stability analysis of rock slopes. Thereafter, a seismic stability analysis in rock slopes was conducted by Xu and Du [18] to propose a series of seismic stability charts.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rock Mass Disturbance on Stability of 3D Hoek–Brown Slope and Charts

Xu,

Wang,

Xie

et al. 2023

Buildings

View full text Add to dashboard Cite

The present study performs a stability analysis of a three-dimensional (3D) rock slope in disturbed rock masses following the Generalized Hoek–Brown (GHB) failure criterion. The factor of safety (FoS) of the slope is derived and the optimal solution is captured combining the limit analysis method and the strength reduction technique. It is indicated by the parametric analysis that the 3D geometric characteristics have a significant impact on slope stability such that FoS decreases sharply with the increase in the width-to-height ratio B/H within 0<B/H≤2.0 and thereafter reaches a constant value asymptotically. The FoS decreases more than 60% linearly when the disturbance factor D increases from 0 to 1.0. Stability charts and slope angle weight factor fβ_3D for 3D slopes are proposed to provide a convenient and straightforward approach to obtain the FoS solutions of 3D slopes. A case study was carried out to apply the stability charts on practical engineering cases, which showed that slope stability under two-dimensional (2D) plane strain will lead to conservative results, and a 3D stability analysis of slope is more appropriate, especially for a slope with a limited width.

show abstract

Measures of slope stability in bonded soils governed by linear failure criterion with tensile strength cut-off

Cited by 8 publications

References 31 publications

Influence Mechanism of Water Content and Compaction Degree on Shear Strength of Red Clay with High Liquid Limit

Influence Mechanism of Water Content and Compaction Degree on Shear Strength of Red Clay with High Liquid Limit

Effects of Drying and Wetting Process on the Tensile Strength of Granite Residual Soil

Effect of Rock Mass Disturbance on Stability of 3D Hoek–Brown Slope and Charts

Contact Info

Product

Resources

About