Research on Lateral Bearing Behavior of Spliced Helical Piles with the SPH Method
Round 1
Reviewer 1 Report
In this paper, the finite element-SPH model of splicing spiral pile is established by the LS-DYNA software. The installation process of the spiral pile and the displacement and stress changes of the pile under horizontal load are simulated, and the relevant laws are obtained The stress distribution of soil around spiral piles under horizontal load was analyzed and the stress zoning was divided into three regions. The correctness of numerical simulation is verified by experiment. Numerical simulation has a certain innovation, the experiment has a certain practical meaning, and the workload is large. Some of the following opinions need to be addressed or considered to improve the technicality of the article.
1. There is little correlation between the references in the introduction and this paper.
2. Section 2 lacks innovation. Lack of essential description and introduction of the SPH method.
3. In section 3.2, the assembly part of the spiral pile controls the descending speed of the pile. Why is the descending time of the two piles different? How to explain?
4. Numerical simulation of pile horizontal loading position, load form description is not clear.
5. There is a great error between numerical simulation results and experimental data, whether it can be further improved or more multivariate analysis.
6. Through numerical simulation and experimental methods, the bearing difference between the splicing spiral pile and the spiral pile is obtained under horizontal load. However, there is a lack of in-depth analysis and no good conclusion is obtained, so the application value is not high.
7. In line 119, please describe in detail how kernel functions are computed.
8. In line 126, please elaborate on how to extract the displacement and velocity vectors of the soil.
9. In line 131, it says to make the screw pile to a depth of 700 mm. Please explain how this depth was determined.
10. In line 192, please elaborate on the method of adding horizontal force.
11. In the conclusion part, whether there is something worth further improvement and discussion in this paper, and whether the method in this paper has certain limitations and scope of application, can be added to explain.
Author Response
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Reviewer 2 Report
1. The figures shown in this paper must be improved.
2. It is strongly suggested that the authors should draw a 3D picture to indicate the target structures that are aimed in this paper.
3. The FEM model must be validated for its solutions.
4. In Fig. 4, dash lines for different stages of the spliced pile must be shown.
5. Fig. 6 and Fig. 8 must be improved.
6. In Fig. 7, why the variations of the curves are not consistent with the changes of the physical content?
7. The simulations shown in Fig. 9 are not compatible with the test results.
Author Response
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Author Response File: Author Response.pdf
Reviewer 3 Report
Rewrite the conclusion with some clear and specific points. Correct the figures positions. Answer this question if the inclined angle of the pile increase than 7 is the pile useful or not (answer in separate paragraph). answer this question if the splice on the body of the pile get big is it effect on the lateral bearing of the piles and for how it effect (please answer in a separate paragraph).
Author Response
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Author Response File: Author Response.pdf
Round 2
Reviewer 1 Report
The manuscript has been revised and improved. However, there are still some corrections to minor methodological errors and text editing. It is suggested that the manuscript is appropriate for publication after corrections.
Author Response
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Reviewer 2 Report
Some of the figures are still not clearly presented. Please improve them with the best strength.
Author Response
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Author Response File: Author Response.docx
