Analytical Prediction of Strip Foundation Building Response to Shallow Tunneling Considering the Tunneling Process
Round 1
Reviewer 1 Report
The paper topic is very interesting. The below issues should be considered
1- more detailed information on the models available in literature must be discussed,
2-limitation of the study must be provided
3-parameters used should be stated işn table as well for ease of flow
4-validity of the model results should be provided
5- recommendation must be added
Author Response
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Reviewer 2 Report
The work is clear in the objectives, uses the scientific methodology well and presents the conclusions limited to the proposed objectives. So it can be published as is.
Author Response
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Reviewer 3 Report
This study aims to propose an analytical method to predict the responses of the strip foundation building to shallow tunneling based on the two-stage method. The proposed method is applied to the condition that the angle between the building axis and the tunnel axis is arbitrary. The building responses obtained from the proposed method are verified by comparing it with the results of the finite element method and finite difference method. I carefully read this manuscript and the content is interesting for publication. however, few points need to be carefully revised before it can be accepted. The following comments may help to adapt the work of the authors.
General comments:
In this study, authors used finite element analysis to simulate the tunnel performance, however, no effective information related to how the authors simulated the progress of tunnel? How the authors simulated the dynamic behavior during tunneling? What are the step procedures that performed to simulate this tunneling process?
Authors need to give a clear information related to the building stiffness and the related foundation type, stiffness, depth, and steel properties.
Based on the presented analysis, authors assumed the soil to be simple isotropic elastic material and the plastic behavior of the soil is neglected. It is known that the plastic behavior of the soil has a critical influence on the prediction results, if it is applicable can the authors simulate this plastic behavior as a part for these analyses.
Authors proposed an analytical method to predict the responses of the strip foundation building to shallow tunneling, but it is still vague how the authors simulated the driven forces through this analytical model? how the authors simulated the tunnel behavior in this model?
Authors need to illustrate how the extracted results from the analytical prediction of strip foundation building responses to shallow tunneling can be benefit to the reader.
Specific comments:
Line 32-33: in introduction, Authors need to present the key factors that affects the ground surface settlement around tunneling.
In introduction, to understand the building responses to shallow tunneling, Authors need to present the recent numerical (Computers and Geotechnics, 122(2020):103549. DOI: 10.1016/j.compgeo.2020.103549), analytical and soft computing (Real-time prediction of shield moving trajectory during tunnelling using GRU deep neural network, Acta Geotechnica, 2021, doi: 10.1007/s11440-021-01319-1.) models that analyzed the problem of tunnel performance and settlement behavior.
Line 67: why the authors specifically used the two-stage method based on the Pasternak model?
What are the advantages and limitations of the two-stage method based on the Pasternak model?
All symbols in the presented equations should be defined.
Line 108: authors need to give a clear information related to the masonry building.
Line 204: Figure 6 shows a comparison with building settlements of finite element method or 4 story’s and 8 story’s, but why there is a difference between this study and PLAXIS 3D (Maleki et al., 2011)?
Line 207-208: the three-dimensional finite difference analysis is conducted to reproduce the building settlements caused by tunneling process using FLAC 3D, how was the three-dimensional finite difference analysis applied to simulate this behavior?
Line 223-224: The step-by-step method is utilized to simulate the tunneling process of shallow tunneling method with each excavation step of 1.0 m. This stage needs to be highlighted.
Line 242-245: To get understanding of the building responses associated with tunnel excavation, the effects of the alignment angle, distance from tunnel face, elastic modulus and Poisson’s ratio of the soil, bending stiffness as well as gap parameter are studied, but why the authors specifically selected these parameters?
Line 296: Figure 10 shows building responses with different distances from tunnel face, however, authors should observe how can this figure be benefit to the reader?
Author Response
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Round 2
Reviewer 1 Report
recommendations for further study are missing and must be added to the end of the conclusion
Author Response
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