Review of Design Methods of the Ultimate Side Shear and Base Resistance for Rock-Socketed Pile

Dai, Guo Liang; Boucheloukh, Abdellatif; Gong, Wei Ming

doi:10.4028/www.scientific.net/amm.353-356.60

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…Table 4 indicates that the EBC of the pile can be increased by 82.01% to 139.12% by adopting base grouting. These observations are consistent with the conclusions from Dai, et al [20], Huang and Gong [21] and Zheng [22]. This implies that the UBC of the pile was mainly increased due to the increase in the end-bearing capacity of the piles.…”

Section: The Effect Of Base Grouting On the Ultimate Bearing Capacity...supporting

confidence: 92%

Effect of Base Grouting on the Bearing Capacity of Bored Piles

et al. 2023

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Post-grouting is a widely used technology for ground improvement and the strengthening of bored pile foundations. In situ experiments have shown that post-grouting is effective in improving the bearing capacity of bored piles. However, due to the cost and complexity of the in situ tests, the total number of test piles is limited. Therefore, it is not surprising that uncertainty is always associated with the collected data. This may significantly affect the conclusion of analyses, and most current studies have neglected this effect. In this paper, statistical analyses were carried out in order to investigate the effect of uncertainties in the data and the impact of post-grouting on the bearing behaviors of bored piles. The results show that post-grouting can significantly improve the bearing behavior of piles. This study is expected to provide technical guidance for post-grouting in foundation engineering.

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Section: The Effect Of Base Grouting On the Ultimate Bearing Capacity...supporting

confidence: 92%

Effect of Base Grouting on the Bearing Capacity of Bored Piles

et al. 2023

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“…Rock-socked piles, embedded at a certain depth within the rock mass, provide significant advantages in terms of high load-bearing capacity by efficiently utilizing the strength of both the pile and the surrounding rock 20 . This type of foundation has gained prominence among various pile foundations and is extensively employed in the construction of high-rise buildings and large bridge foundations [21][22][23] .…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Wetting-Drying Cycle Weakening of Rock Mass on the Mechanical Behavior of Rock-Socketed Piles

Cao,

He,

Wang

et al. 2023

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In order to investigate the influence of the weakening of the rock mass mechanical parameters on the mechanical behavior of the bridge rock-socketed pile on the slope under the condition of wetting and drying cycles, this study focuses on the sandy slate surrounding the rock-socketed piles at Luogu bridge in the Lianghekou reservoir area. Wetting and drying cycle tests were conducted to analyze the variations in rock mechanical parameters associated with these cycles, revealing the underlying weakening mechanisms. Employing the generalized Hoek-Brown criterion and finite-difference numerical simulation, the study systematically examines the evolution of the load-bearing behavior of rock-socketed piles after various wetting-drying cycles. The results indicate that, with an increase in the number of wetting-drying cycles, the uniaxial compressive strength, Young's modulus, cohesion, and internal friction angle of the rock progressively decrease, while Poisson's ratio steadily increases. Power and logarithmic function correlations between each mechanical parameter and the number of cycles are provided. The weakening of rock mechanical parameters due to wetting and drying cycles can be attributed to the disappearance of hydrolysis in hydration prone minerals and the aggregation of microscopic cracks. With increasing wetting and drying cycles, the axial force of the rock-socketed pile at the specified depth gradually increases, while the lateral frictional resistance decreases, and the resistance at the end of the pile tends to gradually increase. The total lateral frictional resistance of the rock-socketed pile shows an overall decreasing trend with increasing wetting-drying cycles. Deformation assessments of rock-socketed piles after different numbers of cycles reveal an inclination towards increased horizontal displacement at various depths and greater settlement at the top and bottom of the piles with more wetting-drying cycles.

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