Numerical Simulation Study on Lateral Displacement of Pile Foundation and Construction Process under Stacking Loads

Cai, Yanyan; Tu, Bingxiong; Yu, Jin; Zhu, Yuefei; Zhou, Jianfeng

doi:10.1155/2018/2128383

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…In the past, piles were unquestionably strengthened [4]. Nowadays, the designers are minimizing the length of reinforcing bars; therefore, they are scaling back the number of piles [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. This reduction needs excellent separation for the cases wherever the piles would entirely or partly require reinforcement, and in cases where the reinforcement has been eliminated.…”

Section: Basic Theory Of Reinforcement Concrete Pile On a Lateral Loadmentioning

confidence: 99%

Force Performance Analysis of Pile Behavior of the Lateral Load

Youssouf

Dembele

et al. 2019

Infrastructures

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This study was focused on the performance of the pile force at the lateral load of an arched bridge. The effect of the compression of arch bridges creates a large horizontal load. Therefore, it is one of the most important factors in the dimensioning of piles. The study aims to make a comparative study between the results obtained in the field, and those obtained by a 3D model defined as a Finite Element (FE) of a drilled pile, subjected to different lateral loads applied at exact time intervals. Moreover, the study was intended to determine the influence of the lateral load applied to a different pile diameter using the FE model. Thus, the unified FEA software Abaqus™ by Dassault systèmes®carried out various processing procedures, namely soil FE modeling, pile FE modeling, soil-pile interface, Mesh, and boundary conditions, to carry out an effective and predictive piles behavior analysis. Based on the Mohr-Coulomb criterion, the soil is considered to be stratified with elastoplastic behavior, whereas the Reinforcement Concrete Pile (RCP) was assumed to be linear isotropic elastic, integrating the concrete damage plasticity. Since the bridge is an arched bridge, the lateral load induced was applied to the head of the piles through a concentrated force to check the pile strength, for which the displacement, stress and strain were taken into account throughout, along the pile depth. The lateral displacement of the pile shows a deformation of the soil as a function of its depth, with different layers crossed with different lateral loads applied. Thus, from the study comparing the results of the FE measurements with the data measured in the field, added to the statistical analyses are as follows: Decrease of the displacement and stress according to the diameter, taking into account the different diameter. The foundations receive loads of the superstructure to be transmitted to the ground. Thus, the piles are generally used as a carrier transmitting loads on the ground. One of the important factors in the durability of the bridge depends more on the strength of these piles. This makes it necessary to study the reinforced concrete foundations because of their ability to resist loads of the structure, and the vertical and lateral loads applied to the structure. This implies an evaluation of the responses of the RCP according to the different lateral loads.

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Section: Basic Theory Of Reinforcement Concrete Pile On a Lateral Loadmentioning

confidence: 99%

Force Performance Analysis of Pile Behavior of the Lateral Load

Youssouf

Dembele

et al. 2019

Infrastructures

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“…The formula was validated through analysis of a single pile case. Cai [12] employed numerical simulation to investigate the lateral displacement of pile foundations under surcharge loading, identifying variations in the impact of different factors. Ashour [13], after modifying and improving the conventional strain wedge method, eliminated the need for a constant multiplier.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Impact of the Former Abandoned Dregs of Mountain Highways on the Construction and Safety of New Bridge Pile Foundations

Liu,

Zhang,

Tang

2024

Applied Sciences

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In highway reconstruction and expansion projects, the impact of the abandoned dreg body produced by the original highway on the new bridge project cannot be ignored. If the abandoned dregs are not handled properly, they will cause great threat to the operation of the new highway as well as to the safety of the surrounding environment and personnel. In this paper, based on a South China highway reconstruction and expansion project, a model of the abandoned dreg body, bridge pile and anti-slide pile is established with the help of finite difference software FLAC3D 5.0. The calculation results show that compared with burying the anti-slide pile, slope cutting is more effective for improving the stability of the abandoned dreg body. Under the action of vertical force intensity, the displacement of the top of the pile increases continuously, and the maximum bending moment of the pile body increases firstly and then decreases. The pile displacement and bending moment of the bridge pile increase significantly in the storm condition compared with the normal condition. In addition, the abandoned dreg body hazard prevention and control technical measures are studied. The impacts of different locations of anti-slide pile burial on bridge piles are analyzed and compared, and it is determined that the optimal location of anti-slide pile burial is the middle of the secondary slope.

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“…More researches have been applied for the underground structures safety design in earthquake resistance since then. It was found that the dynamic response characteristics were quite different between the ground and underground structures of earthquake [8][9][10][11]. Jesmani et al and Angin indicated that earthquakes can damage tunnels especially in geohazard sites such as faults, changing strata, and ground fissures [12,13].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of Metro Tunnel Closely Parallel to a Ground Fissure

Nina

Feng

et al. 2019

Complexity

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Shaking table model test and numerical simulation model were conducted on scaled tunnel model to investigate the mechanism and effect of seismic loadings on metro tunnel which is closely parallel to an active ground fissure. Key technical details of the experimental test were set up; for example, similarity relations, boundary conditions, sensors layout, and modelling methods were presented. Synthetic wave, El Centro wave, and Kobe wave were adopted as the input earthquake waves. Results measured from shaking table model and numerical model were compared and analyzed. It is found that the fissure increased the dynamic response features as accelerations and strains of the tunnel, especially in the part close to the fissure. Average incremental percentage of acceleration amplifying coefficient was 8.33% from the wall close to fissure than the symmetrical one. The short distance to fissure led to serious circumferential dynamic strain, while the distance to fissure influenced the axial dynamic strain less. The numerical analysis results have a good correspondence with those of the shaking table model test. The waves at the top of tunnel have more scattering and emission effect. The fissure increases the dynamic response of the tunnel close to it.

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Numerical Simulation Study on Lateral Displacement of Pile Foundation and Construction Process under Stacking Loads

Cited by 7 publications

References 25 publications

Force Performance Analysis of Pile Behavior of the Lateral Load

Force Performance Analysis of Pile Behavior of the Lateral Load

Analysis of the Impact of the Former Abandoned Dregs of Mountain Highways on the Construction and Safety of New Bridge Pile Foundations

Dynamic Characteristics of Metro Tunnel Closely Parallel to a Ground Fissure

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