3D FEM Analysis of a Pile-Supported Riverine Platform under Environmental Loads Incorporating Soil-Pile Interaction

Kontoni, Denise‐Penelope N.; Farghaly, Ahmed Abdelraheem

doi:10.3390/computation6010008

Cited by 7 publications

(4 citation statements)

References 24 publications

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“…Figure 10 displays a detail of the spring system. e pile-soil interaction and soil-abutment interaction (see Figure 10) in this model are simulated with soil springs (including a lateral spring, vertical spring, and point spring) and backfill springs, respectively [26][27][28][29]. Assuming that the vertical deformation is relatively small, the stiffness of the vertical soil spring and point spring at the bottoms of the piles are simulated by the "m" method, which is calculated from the ratio of the ultimate frictional resistance f max and the corresponding displacement, the bottom limit force q max of piles and their corresponding displacement, respectively [30,31].…”

Section: Finite Element Modelmentioning

confidence: 99%

Investigation on Flooding‐Resistant Performance of Integral Abutment and Jointless Bridge

Easa

et al. 2020

Advances in Civil Engineering

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Bridge washouts connected to flood events are deemed one of the main reasons for structural collapse. Compared to traditional continuous jointed bridges, integral abutment and jointless bridges (IAJBs) have better lateral stability because there are no expansion devices. The mechanical performance of Shangban IAJ bridge, located in Fujian, China, is thoroughly investigated by Finite Element Analysis (FEA). The numerical model is created and validated based on experimental results obtained from static load tests performed on the bridge. A detailed parametric analysis is carried out to assess the correlation between the flood-resistant performance and a number of parameters: skew angle, water-blocking area, span number, pile section geometry, and abutment height. Except for the abutment height, other parameters significantly affect the bridge performance. Furthermore, the change in the span number has a meaningful impact only when fewer than four spans are modeled. Finally, pushover analyses estimate the maximum transverse displacement and the sequence of plastic hinge creation as well as the mechanical behaviour of the structure under lateral flood loads. The analysis results show that IAJBs have better flooding-resistant performance than conventional jointed bridges.

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Section: Finite Element Modelmentioning

confidence: 99%

Investigation on Flooding‐Resistant Performance of Integral Abutment and Jointless Bridge

Easa

et al. 2020

Advances in Civil Engineering

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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%

“…Four different diameters (D = 1.00 m, D = 1.2 m, D = 1.45 m and D = 1.8 m) were chosen to study pile geometry impact at the load (110,000 N, 440,000 N, 1,100,000 N and 1,650,000 N). The pile is supposed to be elastoplastic, and the soil is made using the behavioral relationship of Mohr-Coulomb [1], [11], [13], [15], [27], [28]. Figure 13 shows the result of pile diameter on the stress distribution on the pile shaft.…”

Section: Effect Of Reinforced Concrete Pile Diametermentioning

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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“…Numerical simulation has become quite mature and achieved very good results [29]. However, the structure of URL is generally complex and deep-buried; it is difficult to simulate the rupture process of surrounding rock by numerical modeling, and the simulation of overall structural safety is not perfect.…”

Section: Introductionmentioning

confidence: 99%

Physical Model Test on the Deformation and Fracturing Process of Underground Research Laboratory during Excavation and Overloading Test

Liu,

Sun,

Zhang

et al. 2023

Sustainability

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Understanding the excavation-induced deformation and failure behaviors of the URL (underground research laboratory) for the geological disposal of HLW (high-level radioactive waste) before its construction is essential due to its high safety requirements. To reveal the interaction between structures, the effect of supporting and the characteristics of the overloading-induced damage and safety factor, we carried out a physical model test on the deep underground chamber groups consisting of one main roadway and two parking lots (one is supported, the other is not supported), and the engineering background is the URL of HLW for the geological disposal in Beishan. This type of geomechanical model test is still the first to be carried out so far. The test results confirm that the chamber group is generally stable during the excavation process. After the excavation, the displacement of the intersection is 7–33% larger than that of the non-intersection. The displacement of the supported chamber is reduced by 14–22% compared with that without support. The tension of the bolt at the vault top is greater than that at the waist of the cave. Without support, the safety coefficient of crack initiation is 1.7; the safety coefficient of local destruction is 2.1; and the safety coefficient of general demolition is 2.3. In contrast, the safety coefficient of crack initiation is 1.9; the safety coefficient of local destruction is 2.2; and the safety coefficient of general demolition is 2.4 when the rock mass is supported. The research results provide an important basis for optimizing design schemes and evaluating the safety of the construction process for URL.

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3D FEM Analysis of a Pile-Supported Riverine Platform under Environmental Loads Incorporating Soil-Pile Interaction

Cited by 7 publications

References 24 publications

Investigation on Flooding‐Resistant Performance of Integral Abutment and Jointless Bridge

Investigation on Flooding‐Resistant Performance of Integral Abutment and Jointless Bridge

Force Performance Analysis of Pile Behavior of the Lateral Load

Physical Model Test on the Deformation and Fracturing Process of Underground Research Laboratory during Excavation and Overloading Test

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