Constitutive and Geometric Nonlinear Models for the Seismic Analysis of RC Structures with Energy Dissipators

Abstract

Nowadays, the use of energy dissipating devices to improve the seismic response of RC structures constitutes a mature branch of the innovative procedures in earthquake engineering. However, even though the benefits derived from this technique are well known and widely accepted, the numerical methods for the simulation of the nonlinear seismic response of RC structures with passive control devices is a field in which new developments are continuously preformed both in computational mechanics and earthquake engineering. In this work, a state of the art of the advanced models for the numerical simulation of the nonlinear dynamic response of RC structures with passive energy dissipating devices subjected to seismic loading is made. The most commonly used passive energy dissipating devices are described, together with their dissipative mechanisms as well as with the numerical procedures used in modeling RC structures provided with such devices. The most important approaches for the formulation of beam models for RC structures are reviewed, with emphasis on the theory and numerics of formulations that consider both geometric and constitutive sources on nonlinearity. In the same manner, a more complete treatment is given to the constitutive nonlinearity in the context of fiber-like approaches including the corresponding cross sectional analysis. Special attention is paid to the use of damage indices able of estimating the remaining load carrying capacity of structures after a seismic action. Finally, nonlinear constitutive and geometric formulations for RC beam elements are examined, together with energy dissipating devices formulated as simpler beams with adequate constitutive laws. Numerical examples allow to illustrate the capacities of the presented formulations.

Uncertainty modelling of critical column buckling for reinforced concrete buildings

“…A reasonably comprehensive documentary of buckling studies is given by Ozmen & Girgin (2005). The other relevant researches were carried out by Mata et al (2008), Battini & Pacoste (2002) and Bratina et al (2004).…”

Computer simulation of yielding supports under static and short-term dynamic load

“…Yielding supports can be applied as one of the active means of prevention or localization of dynamic impact or reducing the intensity of dynamic loading [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18].…”

“…Research in [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] focuses on the elaboration of working models of tubes, and provide comparison of the obtained results with analytical and experimental studies. The works consider the cases of static and dynamic axial and transverse straining of samples made from different materials, including the combined ones (sandwich-tubes).…”

Deformability of oblique sections of RC beams on yielding supports under dynamic impact

“…Yielding supports are considered to be one of the active means of protection of structures used for prevention or localization of dynamic impact or reduction of dynamic load intensity [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Application of yielding supports and their effect on stress-train state of structures subjected to dynamic loads still require investigation.…”