Nonlinear Time-Dependent Analysis of Prestressed Concrete Shells
| Autor: | Jure Radnić, Domagoj Matešan |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
business.industry Tension (physics) Shell (structure) Prestressed concrete shell Numerical model Long-term load Short term load Creep Shrinkage Structural engineering Physics::Classical Physics Compression (physics) Finite element method Quantitative Biology::Cell Behavior law.invention Cracking Prestressed concrete law Composite material business |
| Zdroj: | Advanced Structured Materials ISBN: 9783642126666 |
| DOI: | 10.1007/978-3-642-12667-3_11 |
| Popis: | The model for the numerical analysis of prestressed concrete plates and shells under the short‐term and long‐term static loads was presented. The material and geometric structure nonlinearities were modelled. It is possible to simulate the dominant nonlinear effects of concrete: the creep, shrinkage, aging, the development of cracks in tension and yielding in compression, as well as the changes in the tensile and shear stiffness of cracked concrete. Reinforcing steel is modelled as a separate layer with anisotropic material properties, with a possibility to transfer the stresses in the reinforcement bars direction only. Prestressing tendon is simulated by 1‐D curved finite element embedded in the shells finite element. The numerical procedures, which describe the prestressing contributions and time‐dependent analyses, are discussed. The numerical model simulates the prestressing losses that occur during and after the prestressing. A distinction has to be made between pre‐tensioned and post‐tensioned structures, in order to take into consideration the immediate prestressing losses. The numerical model is verified by results of the experimentally tested prestressed concrete shells (see Fig.1). |
| Databáze: | OpenAIRE |
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