Study of Load Calculation Models for Anti-Sliding Short Piles Using Finite Difference Method

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

The paper presents a study of load calculation models for anti-sliding short piles using finite difference method. The paper proposes a comprehensive model for calculating the internal forces of anti-sliding short piles and validates it through laboratory model tests. The paper is well-organized and clearly written.  The paper has some originality and novelty in developing a unified calculation model for anti-sliding short piles that simplifies the complex solving procedure and enhances the computational efficiency. The paper also provides valuable references for sustainable solutions in geological disaster prevention and control.

 

However, the paper also has some limitations and weaknesses that need to be addressed before publication. Some of them are:

 

·       The paper does not provide sufficient details on how the similarity conditions for model tests were derived and how the physical parameters of the landslide soil and pile materials were determined.The changing of the parameter might be produce the different of the model outcomes. It would be helpful to include some formulas or tables to show the calculation process and results.

·       The paper didnot describe the detail for calculate the uniform distribute load q(z). It might be effects to the efficentcy of the model prediction. This applied pressure might be deviate due to different type of soil as well as the geometry of slope.

·       The paper does not discuss how the foundation coefficient K was calculated or estimated for different layers of soil foundation. It would be important to clarify how this parameter affects the internal forces of anti-sliding short piles and how it can be determined in practical engineering situations.

·       The paper does not compare or contrast the proposed model with other existing methods or models for anti-sliding short piles. It would be interesting to see how the proposed model performs in terms of accuracy, efficiency, and applicability compared to other methods or models.

·       The paper does not provide any sensitivity analysis or parametric study to investigate how different factors such as pile length, pile diameter, pile wall thickness, soil properties, etc. influence the internal forces of anti-sliding short piles. It would be beneficial to explore how these factors affect the design and optimization of anti-sliding short piles.

 

·       The paper does not discuss any limitations or challenges of the proposed model or suggest any future research directions or improvements. It would be valuable to acknowledge the potential drawbacks or difficulties of applying the proposed model in real engineering scenarios and propose some possible solutions or extensions.

Comments on the Quality of English Language

This paper can be published after revision as comments.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

The manuscript (Manuscript ID: applsci-2669741) is entitled: Title: Study of Load Calculation Models for Anti-Sliding Short Piles Using Finite Difference Method.

The manuscript has presented an analytical method developed based on the Euler-Bernoulli beam theory and defining boundary conditions, this manuscript develops a set of finite difference equations for computing the structural forces of anti-sliding short piles. Based on the developed analytical method, by comparing the internal forces and deformations of these piles, the manuscript had the test validate the proposed calculation model for anti-sliding short piles. This is an interesting manuscript and this manuscript aligns perfectly with the journal's scope.

However, there are some unclear problems in the manuscript, which need revision before it can be published. Consider my comments for improvement:

1, In the analytical method presented in the article, the friction force between the pile and the surrounding soil environment is not included. This hypothesis is not accurate in reality because, in reality, it is always divided into 2 cases: The case where the pile does not slip - moving with the surrounding soil environment and the case where the pile slides completely in the surrounding soil environment;

2, There is a need for a numerical model to simulate the work of the pile with the surrounding soil environment. From the results obtained in the numerical model, comparisons are made with the analytical results in the method presented in the article as well as with the results obtained from the physical model of the pile and the surrounding land. Based on these comparison results, confirm the accuracy of the analytical method presented in the manuscript;

3, The impact force of the soil environment at the pile head also plays a huge role in the pile's performance. This is not considered when researching and calculating the pile's performance in the newly presented analytical method;

4, The working environment of the soil is elastic and does not consider the influence of water to change the properties of the soil in the analytical method presented in the manuscript. In reality, landslides of pile-soil blocks often occur when water is applied and changes the soil properties. Numerical simulation can be used to explore this phenomenon;

5, Although the reinforcing effect of piles on the soil mass is mentioned in the conclusion of the article, there is no calculation that takes into account the features and reinforcing uses of the piles on the soil mass under study;

6, There needs to be a more thorough and detailed argument and explanation about the types of materials and equivalent forces used in the physical model simulating the pile and surrounding soil environment;

7, The formula for determining the alpha coefficient (page 6) needs to be presented more clearly and according to the journal's template.

 

 

 

 

Comments for author File: Comments.pdf

Comments on the Quality of English Language

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

The title does not correspond to the current study.

There is not enough evidence to validate the results.

A more in-depth analysis should be carried out on anti-sliding short piles.

The simulated sliding soil section should be clearly illustrated in the schematic diagram.

It is essential to include images of the experimental results for each condition.

The relationship between displacement, bending moment and shear force must be reviewed.

The conclusions must be consistent with the proposal and results of this study.

Provide all details and data necessary for experimental and simulation studies.

Calculation of bending moment and shear force must also be provided.

Explain how internal forces are calculated using equation (10).

Explain if the results show the effect of anti-sliding short piles or is it just saturation and the study should be carried out with lower loads.

Maps of soil pressure cell values must be provided.

Specify which displacement meter is used for the reported results.

There should be more new references.

The same units should be used so that direct comparisons can be made.

There are many spaces missing between words.

The word reference or references should be avoided in the text. Cite the author in these cases.

 

Author Response

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Author Response File: Author Response.pdf