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Ultimate bearing capacity of plate on Winkler foundation subjected to a circular uniform load
The present study investigated the problem of a large slab on a Winkler-type foundation subjected to a circular load. The slab is modeled as a ductile Kirchhoff plate and obeys Rankine’s yield criterion with associative flow rule. A circular uniform load is applied onto the top of the plate. As the load increases, the radial cracks occur and spread out at the bottom of the slab. The slab’s load-carrying capacity is defined by the onset of a negative yield line, namely a circumferential crack at the upper side of the slab. Depending on whether the circumferential bending curvature of the plate reaches its elastic limit, the slab was divided into two regions: the inner rigid-plastic region and the outer elastic region. A closed-form solution of the governing equations for each region is found. The influence of the material and geometrical parameters, size of the loaded area, and temperature gradient on the plate’s load-carrying capacity is then investigated. The load-carrying capacities found in previous investigations are compared with the predictions of the present analysis. Based on the analytical results, a regression formula for calculating the plate’s ultimate bearing capacity resting on a Winkler foundation is proposed.
Ultimate bearing capacity of plate on Winkler foundation subjected to a circular uniform load
The present study investigated the problem of a large slab on a Winkler-type foundation subjected to a circular load. The slab is modeled as a ductile Kirchhoff plate and obeys Rankine’s yield criterion with associative flow rule. A circular uniform load is applied onto the top of the plate. As the load increases, the radial cracks occur and spread out at the bottom of the slab. The slab’s load-carrying capacity is defined by the onset of a negative yield line, namely a circumferential crack at the upper side of the slab. Depending on whether the circumferential bending curvature of the plate reaches its elastic limit, the slab was divided into two regions: the inner rigid-plastic region and the outer elastic region. A closed-form solution of the governing equations for each region is found. The influence of the material and geometrical parameters, size of the loaded area, and temperature gradient on the plate’s load-carrying capacity is then investigated. The load-carrying capacities found in previous investigations are compared with the predictions of the present analysis. Based on the analytical results, a regression formula for calculating the plate’s ultimate bearing capacity resting on a Winkler foundation is proposed.
Ultimate bearing capacity of plate on Winkler foundation subjected to a circular uniform load
Int. J. Pavement Res. Technol.
Cong, Zhimin (author) / Tan, Zhiming (author) / Zhu, Tangliang (author)
International Journal of Pavement Research and Technology ; 14 ; 668-675
2021-11-01
8 pages
Article (Journal)
Electronic Resource
English
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