Thesis
Estudio y optimización del acero de refuerzo en la unión trabecolumna en estructuras de concreto reforzado, sujeta a solicitaciones sísmicas, por medio de simulaciones numéricas
Autor
PÉREZ MOTA, JESÚS
Institución
Resumen
The construction of a large number of the existing buildings are based largely on
the use of reinforced concrete, which must be able to dissipate the energy of the
structural system as this one is subjected to different solicitations, being of vital
importance in this type of situation the beam-column connection. This one is the
point of transmission of forces between horizontal elements (beams) and vertical
elements (columns). Thus, the beam-column connection is one of the most risky
points of failure due to the elevated stress concentration.
This work focuses in modeling and predicting of the structural response of the
reinforced concrete beam-column connection subjected to seismic loads, taking
account of their different nonlinear behaviors by using numerical simulations based
on the Finite Element Method. Basically, a strategy of three phases was proposed
here:
1. Global Modeling, where a building of nineteen levels subjected to seismic loads
is three-dimensionally analyzed, taking account of live loads and dead loads;
2. Local Modeling and Nonlinear Analysis of the most requested beam-column
union, based on the results of the previous three-dimensional analysis. In this
phase a calibration of the local model parameters was done in accordance to
previous experimental data (Alamedinne, F. and Ehsani, M. R., 1991);
3. A comparison between local model results and the design rules recommended
by the Reglamento de Construcciones del Distrito Federal 2004 (RCDF-2004).