Based on a certain arch culvert underground drainage project,numerical simulation was used to investigate the distribution characteristics of vertical soil pressure on the top of the arch culvert.Through theoreti-cal analysis,a calculation model for arch culvert soil pressure considering the distribution characteristics of vertical soil pressure on the top of the culvert was established.Orthogonal experiments and regression analysis were used to obtain the stress concentration factor Nf of the soil column in the plane of the culvert top,and the theoretical formula for vertical soil pressure on the top of the arch culvert was derived.The results show that the theoretical formula for the vertical soil pressure on the top of the arch culvert reflects the inverted V-shaped distribution of the vertical soil pressure on the culvert top through the stress concentration factor Nf of the soil column in the plane of the culvert top,and the calculated results are in good agreement with the numerical simulation results.
维普
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