A Calculation Method of Salt Expansion of Saline Soil Foundation
A technology of saline soil and salt expansion, applied in the field of foundation soil survey, foundation structure engineering, construction, etc., can solve the problem that the foundation self-weight stress and the influence of additional loads cannot be considered, and the difference of salt expansion of soil layers at different depths is not considered, etc. problem, to achieve the effect of convenient measurement method, meet actual engineering needs, and less calculation parameters
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[0032] refer to figure 1 , a saline soil foundation D overlays the additional load of subgrade F, the filling height h of subgrade F is 1.5m, the width of the top surface of subgrade F is 13.4m, and the side-slope ratio of subgrade F is 1:1.5. The saline soil at the bottom of the subgrade F will undergo salt swelling and deformation during the cooling process in winter.
[0033] Below adopt the inventive method to determine the salt swelling amount (the position is the center of the roadbed) that saline soil foundation D produces under the additional load of roadbed F under the winter cooling period, concrete steps are as follows:
[0034] (1) Through on-site investigation, determine the salt expansion deformation calculation depth l of the saline soil foundation D 0 is 3.0m; determine the temperature T of the i-th layer of soil before cooling in winter i1 , unit °C, determine the minimum temperature T of the i-th layer of soil during the winter cooling period i2 , unit ℃, ...
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