Abstract
According to the existing practical engineering data, the settlement curve of shield tunnel with small curvature radius is obviously different from that of straight tunnel, so using Peck formula to forecast the surface settlement is not applicable. This paper describes results from a series of the laboratory test carried out in sandy soil, which based on similarity theory. According to the test results, the characteristics of surface settlement caused by small radius tunnel excavation are summarized, and the effects of turning radius and buried depth on the surface settlement are demonstrated. Based on Gaussian formula, a method of forecasting the surface settlement caused by construction of shield tunnel with small curvature radius is developed.
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The data supporting the results of this study can be obtained from the corresponding author upon reasonable request.
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Funding
The research is funded by National Natural Science Foundation of China (No. 51278467) and Henan Provincial Science and Technology Research Project (No. 162102210019 ).
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PX: Investigation—editing, supervision and checking. DX: Writing, editing—data analysis and original drafts.
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Xu, P., **, D. Investigation on the Surface Settlement of Curved Shield Construction in Sandy Stratum with Laboratory Model Test. Geotech Geol Eng 39, 5493–5504 (2021). https://doi.org/10.1007/s10706-021-01840-w
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DOI: https://doi.org/10.1007/s10706-021-01840-w