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- W2292235092 abstract "This study deals with the reduction of the stiffness in precast concrete structural elements of multi-storey buildings to analyze global stability. Having reviewed the technical literature, this paper present indications of stiffness reduction in different codes, standards, and recommendations and compare these to the values found in the present study. The structural model analyzed in this study was constructed with finite elements using ANSYS® software. Physical Non-Linearity (PNL) was considered in relation to the diagrams M x N x 1/r, and Geometric Non-Linearity (GNL) was calculated following the Newton-Raphson method. Using a typical precast concrete structure with multiple floors and a semi-rigid beam-to-column connection, expressions for a stiffness reduction coefficient are presented. The main conclusions of the study are as follows: the reduction coefficients obtained from the diagram M x N x 1/r differ from standards that use a simplified consideration of PNL; the stiffness reduction coefficient for columns in the arrangements analyzed were approximately 0.5 to 0.6; and the variation of values found for stiffness reduction coefficient in concrete beams, which were subjected to the effects of creep with linear coefficients from 0 to 3, ranged from 0.45 to 0.2 for positive bending moments and 0.3 to 0.2 for negative bending moments." @default.
- W2292235092 created "2016-06-24" @default.
- W2292235092 creator A5001730822 @default.
- W2292235092 creator A5051584643 @default.
- W2292235092 date "2012-01-01" @default.
- W2292235092 modified "2023-09-27" @default.
- W2292235092 title "Contribution to assessing the stiffness reduction of structural elements in the global stability analysis of precast concrete multi-storey buildings Contribuição para a avaliação da redução da rigidez de elementos estruturais de concreto pré-moldado de edifícios de múltiplos pavimentos para análise da estabilidade global" @default.
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