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- W923956406 abstract "To study deformation properties, a three-dimensional finite element nonlinear analysis model was established for a 1/4 scale ratio test model with post-tensioned unbonded prestressed reinforced concrete hollowed slab-column structure. The vertical uniformly distributed loads were acted on surface of hollowed floor of FEM model by monotonic loading way. Comparing calculated results and test results of deflection shows that the three-dimensional finite element nonlinear analysis model can simulate the real working situations of structure better. The calculation results are consistent with the test results. FEM analysis further shows that anisotropy exists in post-tensioned unbonded prestressed concrete hollowed flat floors with parallel circular-tubes. In direction vertical to layout of tubes, deformations of cross section of slab are satisfied with the plane assumption; while in direction parallel to layout of tube, the continuity of slab is destroyed and the mechanics stiffness is weaken. The deformations of cross section of slab do not meet the plane assumption. The effects of unbonded prestressed concrete hidden flat beams in middle of slab-column structure play a role as frame beams which are supports for grid slab. The formula of structure deflection is set up by comprehensively analyzing several factors that affect the deformations." @default.
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- W923956406 date "2014-03-30" @default.
- W923956406 modified "2023-09-26" @default.
- W923956406 title "The Deflection Analysis of Post-tensioned Unbonded Prestressed Concrete Hollowed Slab- column Structures" @default.
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