Model Test on Lateral Loading Performance of Secant Pile Walls

Liao, Shaoming; Li, Wenlin; Fan, Yadong; Sun, Xun; Shi, Zhenhao

doi:10.1061/(asce)cf.1943-5509.0000374

Cited by 15 publications

(6 citation statements)

References 11 publications

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“…The presence of PCPs may be related to the varying behavior of the samples stated previously. Liao et al (2014) revealed the same conclusion.…”

Section: Testing Results and Discussionsupporting

confidence: 59%

“…According to Brown et al (2007), the recommended length and diameter for CFA secant pile walls ranged from 10 to 18 m, and 0.35 to 0.6 m, respectively. The common overlapping ratio between the piles is taken 20% of the pile diameter (Liao et al , 2014). So, the geometric characteristics of the prototype used for the modeling were popular secant pile walls with a diameter of 600 mm, an overlapping width of 120 mm and a length of 15,000 mm.…”

Section: Setup Of the Model Testmentioning

confidence: 99%

“…The secant pile walls are created by made of a line of cast-in-place overlapping piles. Liao et al (2014) reported that there are two types of cast-in-place secant pile walls, according to the design requirements. The first type, known as the reinforced-reinforced-reinforced (RRR), or hard/hard type, basically consists of reinforced concrete piles (RCPs) constructed successively as demonstrated in Figure 1(a).…”

Section: Introductionmentioning

confidence: 99%

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Structural behavior of small-scale reinforced concrete secant pile wall

El-Nimr

Basha

Abo-Raya

et al. 2022

WJE

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Purpose To predict the real behavior of the full-scale model using a scale model, optimized simulation should be achieved. In reinforced concrete (RC) models, scaling can be substantially more critical than in single-material models because of multiple reasons such as insufficient bonding strength between small-diameter steel bars and concrete, and excessive aggregate size. Overall, there is a shortfall of laboratory and field-testing studies on the behavior of secant pile walls under lateral and axial loads. Accordingly, the purpose of this study is to investigate the validity and the performance of the 1/10th scaled RC secant pile wall under the influence of different types of loading. Design/methodology/approach The structural performance of the examined models was evaluated using two types of tests: bending and axial compression. A self-compacting concrete mix was suggested, which provided the best concrete mix workability and appropriate compressive strength. Findings Under axial and bending loads, the failure modes were typical. Where the plain and reinforced concrete piles worked in tandem to support the load throughout the loading process, even when they failed. The experimental results were relatively consistent with some empirical equations for calculating the modulus of elasticity and critical buckling load. This confirmed the validity of the proposed model. Originality/value According to the analysis and verification of experimental tests, the proposed 1/10th scaled RC secant pile model can be used for future laboratory purposes, especially in the field of geotechnical engineering.

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“…The presence of PCPs may be related to the varying behavior of the samples stated previously. Liao et al (2014) revealed the same conclusion.…”

Section: Testing Results and Discussionsupporting

confidence: 59%

Section: Setup Of the Model Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Structural behavior of small-scale reinforced concrete secant pile wall

El-Nimr

Basha

Abo-Raya

et al. 2022

WJE

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“…It is critical to consider soil behavior in dynamic load presence [1,2]. Any damage to the pile foundations can lead to failure of the structure [3]. The shockwave from a surface explosion will transfer the blast energy along the ground surface and to the underlying layers.…”

Section: Introductionmentioning

confidence: 99%

Determination of Blast Impact Range and Safe Distance for a Reinforced Concrete Pile Under Blast Loading

Khodaparast

Hosseini

Moghtadaei

2023

IJE

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Piles transfer structural loads to the hard layers of the soil or rock; thus, any damage to the pile foundations could have irreparable consequences. A surface blast can create a ground shock that transmits the blast energy along the surface and at depths. Explosion research necessitates technical design to mitigate the adverse effects on nearby structures and facilities. The blast impact range and the safe distance at which the pile will avoid structural damage are two critical parameters for the design of a pile under blast loading. Therefore, this study used the coupled Eulerian-Lagrangian method to determine the blast impact range and safe distance for reinforced concrete piles (RC piles) subjected to blast loading. The results for clayey and sandy soils revealed that an increase in the explosive depth had no significant effect on the safe distance, despite a decrease in the compressive and tensile damage to the pile. Increasing the mass and depth of the blast decreased the ultimate compressive bearing capacity of the pile and increased the blast impact range. Sandy soil performed better than clayey soil against blast loading. The findings of this study can be applied to various projects, including critical structures near gas transmission lines or vulnerable to terrorist attacks.

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“…They can induce lateral and bending stresses in the piles and cause significant damage, resulting in differential settlement and tilting of the superstructure, leading to weakening of the structure [1]. A small magnitude of a blast, if it occurs in close proximity of a pile, it may cause the pile to fail which can subsequently lead to progressive failure of the whole structure [2,3]. It is therefore important when designing structures that may be subjected to the ground vibrations from rock blasting to assess the stability and vulnerability of a pile foundation system against ground-borne vibrations.…”

Section: Introductionmentioning

confidence: 99%

A field study on pile response to blast-induced ground motion

Jayasinghe

Zhao

Goh

et al. 2018

Soil Dynamics and Earthquake Engineering

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A series of field tests using controlled blasting was conducted at a location in the North Western part of Singapore to assess the behaviour of pile foundations subjected to ground excitation. The field tests involved three piles with different pile head fixity conditions. The piles were instrumented with strain gauges to evaluate the bending moments and axial force along the piles. For the fixed-head piles, the maximum bending moment occurred at the pile head level. For free-head pile exhibited higher bending moments close to the mid-height of the pile and zero bending moment at the pile head due to the absence of restraints at the top. For all cases, the axial force was maximum value at the pile head.

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Model Test on Lateral Loading Performance of Secant Pile Walls

Cited by 15 publications

References 11 publications

Structural behavior of small-scale reinforced concrete secant pile wall

Structural behavior of small-scale reinforced concrete secant pile wall

Determination of Blast Impact Range and Safe Distance for a Reinforced Concrete Pile Under Blast Loading

A field study on pile response to blast-induced ground motion

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