Effect of inclined and eccentric loading on the bearing capacity of strip footing placed on the reinforced slope

Halder, Koushik; Chakraborty, Debraj

doi:10.1016/j.sandf.2020.04.006

Cited by 23 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results are generally shown that employing skirts improved the load-carrying capacity and decreased settlement for all loading cases because the skirts work to confine the soil below the footing and lead to making the foundation acts as a single part to transfer loads to great depths. In addition, the load-carrying capacity of unimproved and improved foundation with skirt is reduced with increasing eccentricity and loading angle for all cases which agrees with [5,8,[28][29][30][31]. Analysis of experimental results showed that the effect of positive eccentric-inclined loading on the reduction of soil-bearing capacity is more than negative eccentric-inclined loading for all cases due to the fact that the applied loading affects away from the center of the foundation and this agrees with the result of [29,32].…”

Section: Load Settlement Behaviorsupporting

confidence: 76%

Enhancing the ability of the square footing to resist positive and negative eccentric-inclined loading using an inclined skirt

Salah Alhalbusi,

Al-Saidi

2023

E3S Web Conf.

View full text Add to dashboard Cite

Laboratory model tests were performed to investigate the behavior of shallow and inclined skirted foundations placed on sandy soil with R.D%=30 and the extent of the impact of the positive and negative eccentric-inclined loading effect on them. To achieve the experimental tests, it was used a box of (600×600) mm cross-sectional and 600mm in height and a square footing of (50*50) mm and 10 mm in thickness attached to the skirt with Ds=0.5B and various an angle of (10°, 20°, 30°). The results showed that using skirts leads to a significant improvement in load-carrying capacity and decreased settlement. In addition, when the skirt angle increased, the ultimate load improved. Load-carrying capacity decreased with increasing eccentricity and load inclination. For load inclination (Beta) 15° when the eccentricity changed from e=0.15B to e=0.05B, the load improvement percentages were (323.2 to 263%) and (214 to 220%). The settlement reduction factor was (83 to 78%) and (62 to 58%) for positive and negative eccentric-inclined loading, respectively. Also, the result showed that the positive effect on reducing soil-bearing capacity is more than the negative. Increasing eccentricity increases the improvement percentage for positive eccentric-inclined load and decreases for the case of negative eccentric-inclined load. Increased skirt angle will increase the Improvement factor (IR). When the skirt angle increased from 10° to 30° for an improved foundation with load angles of 5°, 10°, and 15°, the improvement factor (IR) increased from (2.53, 2.51, 2.4) to (3.45, 3.65, 3.97) and (2.43, 2.58, 2.54) to (4, 4.63, 5.3) for both negative and positive eccentric-inclined load respectively and settlement reduction factor for load angle 15° and skirt angle increase from 10° to 30° were 34% and 27% for positive and negative eccentric-inclined load respectively. The (IR) for the positive eccentric-inclined load is more than the negative eccentric-inclined load for all cases. In addition, the skirt angle of 30° significantly improved the improvement factor (IR).

show abstract

Section: Load Settlement Behaviorsupporting

confidence: 76%

Enhancing the ability of the square footing to resist positive and negative eccentric-inclined loading using an inclined skirt

Salah Alhalbusi,

Al-Saidi

2023

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…Therefore, the welds are set as a rigid connection in the numerical models. The geometric dimension of the numerical DC joints inevitably bear eccentric load [23,24], due to the incomplete vertical of the embedded steel plate at the connection, in addition to other quality problems. Local buckling, or even overall instability of the support system, is easily caused by eccentric load [25].…”

Section: Finite Element Modelmentioning

confidence: 99%

Mechanical Properties of Disconnectable Coupling Joints for Steel Bracing under Eccentric Load

Xie

Niu

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

Disconnectable coupling (DC) joints of steel bracing in foundation pit engineering are inevitably subjected to eccentric load, but their mechanical properties under eccentric load have not been thoroughly investigated. Based on full-scale test results of DC joints under axial compression, a validated finite element model was established. The bearing capacity and flexural performance of DC joints under eccentric load were studied systematically through a series of numerical simulations. These parameters included the length, width and height of the steel wedge; eccentricity; steel tube wall thickness; channel steel thickness and middle-rib plate height. Based on the numerical results, a modified moment–rotation model was established. The results obtained show that the numerical models accurately reflect the failure mode and the load-displacement curves revealed by the full-scale test. The bearing capacity and flexural performance of DC joints decreases with eccentricity, middle-rib plate height, and steel wedge height. The effect of eccentricity is the most significant. By contrast, the bearing capacity and flexural performance of DC joints increases with steel wedge length, steel wedge width, channel steel thickness and steel tube wall thickness. The modified moment–rotation model can describe the flexural performance of DC joints accurately under eccentric load.

show abstract

“…In the last few decades, stability-related applications of reinforced soil structures were proposed by various authors by means of experimental full-scale structure models [1][2][3], centrifuge, and other reduced-scale models [4][5][6][7][8][9][10][11][12][13][14][15], analytical procedures, and numerical models [16][17][18][19][20][21][22][23]. More recently, the use of artificial intelligence (AI)-based modeling techniques to solve complex engineering problems has gained the interest of various scientists and researchers.…”

Section: Introductionmentioning

confidence: 99%

On the Potential of Using Random Forest Models to Estimate the Seismic Bearing Capacity of Strip Footings Positioned on the Crest of Geosynthetic-Reinforced Soil Structures

Ausilio,

Durante,

Zimmaro

2023

Geosciences

View full text Add to dashboard Cite

Geosynthetic-reinforced soil structures are often used to support shallow foundations of various infrastructure systems including bridges, railways, and highways. When such infrastructures are located in seismic areas, their performance is linked to the seismic bearing capacity of the foundation. Various approaches can be used to calculate this quantity such as analytical solutions and advanced numerical models. Building upon a robust upper bound limit analysis, we created a database comprising 732 samples. The database was then used to train and test a model based on a random forest machine learning algorithm. The trained random forest model was used to develop a publicly available web application that can be readily used by researchers and practitioners. The model considers the following input factors: (1) the ratio of the distance of the foundation from the edge and the width of the foundation (D/B), (2) the slope angle (β), (3) the horizontal seismic intensity coefficient (kh), and (4) the dimensionless geosynthetic factor, which accounts for the tensile strength of the geosynthetic. Leveraging the model developed in this study, we show that the most important features to predict the seismic bearing capacity of strip footings positioned on the crest of geosynthetic-reinforced soil structures are D/B and kh.

show abstract

Effect of inclined and eccentric loading on the bearing capacity of strip footing placed on the reinforced slope

Cited by 23 publications

References 12 publications

Enhancing the ability of the square footing to resist positive and negative eccentric-inclined loading using an inclined skirt

Enhancing the ability of the square footing to resist positive and negative eccentric-inclined loading using an inclined skirt

Mechanical Properties of Disconnectable Coupling Joints for Steel Bracing under Eccentric Load

On the Potential of Using Random Forest Models to Estimate the Seismic Bearing Capacity of Strip Footings Positioned on the Crest of Geosynthetic-Reinforced Soil Structures

Contact Info

Product

Resources

About