Stress distribution of embedded caisson foundation under lateral load based on the continuum approach

Yang, Chen; Ni, Pengpeng; Han, Jiqing; Zhao, Wen; Jia, Pengjiao; Zheng, Weifeng

doi:10.1080/1064119x.2021.1992810

Cited by 6 publications

(5 citation statements)

References 27 publications

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“…The eigenvalues λ m are the root of the eigen-Equation (35). From Equation (29), Equation (30), and Equation ( 21), the pending function of T m ðtÞ can be calculated by…”

Section: Analytical Solutionsmentioning

confidence: 99%

“…Substituting Equations ( 31)- (35) to Equation ( 29) and Equation (30), the average excess pore water pressure of this CCF reinforced with penetrated PCCSs and floating DM columns in Region A ( u 1 ) and in Region B ( u 2 ) can be derived during 0 ≤ t < t u .…”

Section: Analytical Solutionsmentioning

confidence: 99%

“…In addition, several methodologies consist of the fieldscale tests, numerical analysis as well as analytical solutions for studying the consolidation behaviors of the composite foundations reinforced by different vertical elements. Because of the accuracy and convenience for end-users, analytical solutions are more popular than field measurement and numerical methods [16,34,35]. Considerable achievements on the consolidation of the permeable column-and impermeable pile-reinforced composite foundations which adopted Biot's consolidation theory have been obtained [13,36,37].…”

Section: Introductionmentioning

confidence: 99%

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Analytical Solution for Consolidation Behaviors of Combined Composite Foundation Reinforced with Penetrated PCCSs and Floating DM Columns

Zhang

Liu

et al. 2023

Geofluids

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As the composite pile, the precast concrete piles reinforced with cement-treated soil (PCCS) is formed by driving the precast cement (PC) pile into the deep mixing (DM) column, which has been successfully and widely utilized to support buildings and embankments over soft soil. To increase the pile spacing and give full play to the economic merits of the PCCS, a reinforcement scheme, which involves the combined use of rigid piles and flexible columns, employing penetrated PCCSs and floating DM columns is proposed and utilized for soft soil ground treatment. However, there is a lack of feasible method for consolidation behaviors of this combined composite foundation (CCF) reinforced with penetrated PCCSs and floating DM columns under flexible loads. This paper developed an analytical solution to predict the average consolidation degree of this CCF based on a cylinder consolidation model and double-layer ground consolidation theory. The excess pore pressure and average consolidation degree were calculated by considering the composite pile penetration into the cushion. The analytical method agrees well with results obtained by numerical analysis. Additionally, a parametric study was conducted systematically to analyze the effect of key influence factors on the average consolidation degree of this CCF. The results indicate that the consolidation rate of this CCF can be much faster than that of the natural ground. The consolidation rate strongly depends on the compressive modulus and area replacement ratio of PCCSs. The increasing inner core-outer core modulus ratio and the inner core-subsoil modulus ratio increase the consolidation rate of this CCF. In addition, the consolidation rate increases with the gravel cushion-subsoil modulus ratio, while it decreases with the loading period.

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“…The eigenvalues λ m are the root of the eigen-Equation (35). From Equation (29), Equation (30), and Equation ( 21), the pending function of T m ðtÞ can be calculated by…”

Section: Analytical Solutionsmentioning

confidence: 99%

Section: Analytical Solutionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analytical Solution for Consolidation Behaviors of Combined Composite Foundation Reinforced with Penetrated PCCSs and Floating DM Columns

Zhang

Liu

et al. 2023

Geofluids

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“…Owing to the limitations of traditional improvement methods, microorganisms have been explored for improving the soil-bearing capacity in an eco-friendly manner [1,2]. Bacillus pasteurii is one of the commonly used in microbially induced carbonate precipitation (MICP) method.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Shear Behavior and Mechanism of MICP-Treated Loess Soil

Chen,

Zhao,

et al. 2024

Geofluids

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Microbially induced carbonate precipitation (MICP) has been utilized as a new method to improve loess soil strength. In this study, we investigated the influence of the main parameters on the shear strength of MICP-treated loess specimens. Initially, culture media with different formulas and pH values were examined to identify the most efficient medium for loess soil. To explore the shear behavior of MICP-treated loess under general stress levels, unconfined compressive strength (UCS) tests and triaxial tests relevant to the compression strength and vertical loads were performed on MICP-treated loess with different calcium sources, cementation concentrations, and curing periods. Subsequently, calcium chloride was selected as the optimal calcium source based on the ultimate strength of the MICP-treated loess. The effective cementation concentration in the loess soil was between 1.0 and 1.25 M. The ultimate strength of the MICP-treated loess was 3.6 times of the untreated loess. The stress-strain curves indicate that a higher cementing effect can be expected with an increase in the curing period. The formation process of calcium carbonate and the micromorphology of the MICP-treated loess samples were examined using scanning electron microscopy. In this study, we present an environmentally friendly technique for improving loess soil strength.

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“…Monopiles are open-ended circular steel piles with 𝐿∕𝐷 ratios typically ranging between 3 and 10 and are subject to large overturning moments from the superstructure, therefore extrapolating the API method is not appropriate (Kallehave et al, 2015;Byrne et al, 2017). Alternative methods for analysing soil-structure interaction are often required for low 𝐿∕𝐷 substructures (Ali Jawaid and Madhav, 2013;Chen et al, 2022;Gerolymos and Gazetas, 2005). https://doi.org/10.1016/j.oceaneng.2023.116642 Received 18 August 2023; Received in revised form 11 December 2023; Accepted 30 December 2023…”

Section: Introductionmentioning

confidence: 99%

A Cpt-Based Multi-Spring Model for Lateral Monopile Analysis Under Sls Conditions in Sand

Tott-Buswell,

Prendergast,

Gavin

2023

Preprint

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Stress distribution of embedded caisson foundation under lateral load based on the continuum approach

Cited by 6 publications

References 27 publications

Analytical Solution for Consolidation Behaviors of Combined Composite Foundation Reinforced with Penetrated PCCSs and Floating DM Columns

Analytical Solution for Consolidation Behaviors of Combined Composite Foundation Reinforced with Penetrated PCCSs and Floating DM Columns

Investigation on the Shear Behavior and Mechanism of MICP-Treated Loess Soil

A Cpt-Based Multi-Spring Model for Lateral Monopile Analysis Under Sls Conditions in Sand

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