Resumen

MOSCOSO, Edisson  y  QUIROZ, Luis. Proposal for peruvian standard considering the effect of bidirectionality and the angle of incidence of an earthquake. Tecnia [online]. 2019, vol.29, n.2, pp.99-108. ISSN 0375-7765.  http://dx.doi.org/10.21754/tecnia.v29i2.703.

Currently, it is assumed that seismic force applied to the building acts independently in two or three principal directions, orthogonal to each other, this assumption is not necessarily correct, because seismic analysis of buildings should consider the bidirectional effects of an earthquake. This consideration takes place if an angle of real incidence and the seismic force acting in each orthogonal direction is taken into account to estimate the maximum response of the building. These effects will be analyzed by using the linear time-history analysis of 11 structures with different rigidities and eccentricities in two orthogonal directions, using angles of incidence each 10 degree and 20 Peruvian seismic records for rigid, intermediate and flexible soils obtained from database of Japan-Peru Center for Earthquake Engineering Research and Disaster Mitigation (CISMID) and Geophysical Institute of Peru (IGP). Furthermore, a non-linear time-history analysis will be carried out, which will be applied to one of the 11 structures and will use angles of incidence each 10 degree and one seismic record. The maximum seismic response will be compared with the maximum modal response spectral analysis obtaining a linear equation. to obtain a propose based on amplification factors. Finally, amplification factors are proposed to obtain a relationship between modal spectral analysis and time-history analysis that consider the effects of the bidirectionality and the angle of incidence in reinforced concrete structures.

Palabras clave : Bidirectionality; Angle of incidence; Time-History Analysis.

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