Nonlinear Analysis of Single Model Piles Subjected to Lateral Load in Sloping Ground

Jebur, Ameer A.; Atherton, William; Alkhadar, Rafid M.; Loffill, Edward

doi:10.1016/j.proeng.2017.07.172

Cited by 9 publications

(3 citation statements)

References 12 publications

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“…For the traffic load on the slope top, when the car wheel passes through a certain point on the road surface at a certain speed, the change of the wheel load at that point is a process of first increasing and then decreasing, and its stress curve is a half-wave sine curve. e pressure effect of vehicle driving on the rock and soil mass under the road can be approximately simulated by repeated discontinuous half sine curve [28][29][30][31]. e sine load oscillogram is shown in Figure 5.…”

Section: Time-domain Analysis Of Traffic Load Slopementioning

confidence: 99%

The Anti sliding Mechanism of Adjacent Pile‐Anchor Structure considering Traffic Load on Slope Top

Zhang

2021

Advances in Civil Engineering

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In view of the fact that the anti sliding effect analysis of the current anchor cable and anti slide pile structure is not yet complete, research on the synergy mechanism of adjacent pile-anchor composite structures under traffic load is carried out. Firstly, a free vibration analysis for the slope dynamic model is carried out by using a three-dimensional finite element numerical simulation method. By improving the slope boundary conditions of time-domain analysis, the time-domain equation of the dynamic model of traffic load acting on the top of the slope is solved accurately, and the response law of the internal force of the pile anchor composite structure is also described. The mechanism by which the pile anchor composite structure resists against the slope sliding through the internal force increment is proposed: this internal force increment is estimated to be 73.4%, while that of anchor cable is 26.6%. The composite structure presents the coordinated sharing for sliding force. The internal force of the lower row of anchor cables is 89.48 kN larger than that of the upper row, and the internal force increment is four times larger, indicating that the lower anchor cable is more effective in slope reinforcement. As the deformation at the top of the slope is greater, the prestress of the upper anchor cable should be increased to avoid the “chain failure” caused by excessive deformation. As a result, the coordination law of internal force of pile anchor is revealed, and the anti sliding sharing mechanism is clarified. A design idea of the adjacent pile-anchor composite structure is proposed, which takes 0.2‐0.3 times the remaining sliding force as the design value of prestressed anchor cable. The idea fully considers the anti sliding effect of prestressed anchor cables and reduces the design size of anti slide pile section, providing a theoretical support for optimization design of combined anti slide structure and saving project investment.

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Section: Time-domain Analysis Of Traffic Load Slopementioning

confidence: 99%

The Anti sliding Mechanism of Adjacent Pile‐Anchor Structure considering Traffic Load on Slope Top

Zhang

2021

Advances in Civil Engineering

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“…For a long time, the theoretical research on the design of anti-sliding piles has seriously lagged behind the engineering practice, and there is a lack of accurate and reasonable standards. As a result, the design and calculation of anti-sliding piles are mostly based on engineering experience, which may result in a great waste of landslide control engineering investment or potential security risks [2][3]. The main reasons for the failure of anti-sliding piles are the position of the sliding surface, the sliding range, the thrust of the landslide, etc., or the design parameters are not set accurately (such as foundation resistance coefficient, etc.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Numerical Study on the Anti-Slide Mechanism of Slope with Different Anti-Slide Pile Parameters

Wenmei

Jin

Liu

et al. 2022

Advances in Transdisciplinary Engineering

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The damage of rock slopes is often very sudden, and a series of reinforced concrete anti-slide piles are set on the slope, which can effectively control the landslide and ensure the safety of people’s lives. In this paper, through numerical simulation and theoretical analysis, the parameter sensitivity analysis of anti-sliding piles with different cross-sectional shapes and different pile spacings, the displacement and stress laws of anti-sliding piles under different parameter changes are obtained. At the same time, through theoretical analysis of the anti-sliding mechanism of anti-sliding piles under different parameters, it provides some theoretical guidance for the parameter selection of anti-sliding piles in actual engineering construction. The result shows: the distribution law of stress and displacement under different parameters is analyzed, and it is found that the anti-sliding ability of circular anti-sliding piles is weaker when the pile spacing is larger. When the pile spacing of the rectangular anti-sliding pile is large, the load it can bear is large. When the pile spacing is too wide, the soil arch effect gradually weakens, and the effect of anti-slide piles is weakened.

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“…The stress-strain relationship of soil is non-linear and settlement can be driven by an increase in relative vertical stress (Loria et al, 2015;Jebur et al, 2017a). In conventional procedures, pile settlement can be determined by dividing the sub-soil layers into sections.…”

Section: Introductionmentioning

confidence: 99%

Settlement Prediction of Model Piles Embedded in Sandy Soil Using the Levenberg–Marquardt (LM) Training Algorithm

et al. 2018

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This investigation aimed to examine the load carrying capacity of model piles embedded in sand soil and to develop a predictive model to simulate pile settlement using a new artificial neural network (ANN) approach. A series of experimental pile load tests were carried out on model concrete piles, comprised of three piles with slenderness ratios of 12, 17 and 25. This was to provide an initial dataset to establish the ANN model, in attempt at making current, in situ pile-load test methods unnecessary. Evolutionary Levenberg-Marquardt (LM) MATLAB algorithms, enhanced by T-tests and F-tests, were developed and applied in this process. The model piles were embedded in a calibration chamber in three densities of sand; loose, medium and dense. According to the statistical analysis and the relative importance study, pile lengths, applied load, pile flexural rigidity, pile aspects ratio, and sand-pile friction angle were found to play a key role in pile settlement at different contribution levels, following the order: P > δ > lc/d > lc > EA. The results revealed that the optimum model of the LM training algorithm can be used to characterize pile settlement with good degree of accuracy. There was also close agreement between the experimental and predicted data with a root mean square error, (RMSE) and correlation coefficient (R) of 0.0025192 and 0.988, respectively.

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Nonlinear Analysis of Single Model Piles Subjected to Lateral Load in Sloping Ground

Cited by 9 publications

References 12 publications

The Anti sliding Mechanism of Adjacent Pile‐Anchor Structure considering Traffic Load on Slope Top

The Anti sliding Mechanism of Adjacent Pile‐Anchor Structure considering Traffic Load on Slope Top

Theoretical and Numerical Study on the Anti-Slide Mechanism of Slope with Different Anti-Slide Pile Parameters

Settlement Prediction of Model Piles Embedded in Sandy Soil Using the Levenberg–Marquardt (LM) Training Algorithm

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