FRAGILITY CURVES FOR CONFINED MASONRY IN TYPICAL CONSTRUCTION IN PERU

Heredia R.; Heredia R.; Casusol G.F.; Carbajal F.M. · World Conference on Earthquake Engineering proceedings (2021)

Resumen

The purpose of this work was elaborate the fragility curves for confined masonry buildings and estimate probabilities of leave associated with different levels of performance for typical construction in Peru. The structural typology proposed consist of a 5-level building and modeled by OpenSees computer program. The fundamental period of the structure have been calculate according to empirical models, however, the seismic weight of the structure, the stiffness and the seismic shear force are estimated. After, once the structure defined, the incremental dynamic analysis is carried out by scaling the accelerograms to measure the behavior of the structure against seismic loads. A total of 23 pairs of seismic records were used, each with 100 scaling values, making a total of 4600 nonlinear history time analysis with pseudo accelerations from 0.02g to 4.00g. With the results, the probabilities of exceedance for 3 levels of performance, as, Immediate Occupancy (OI), Life Protection (PV) and Collapse Safety (SC) were calculated. The results showed that for pseudo accelerations of 0.50g the probability of exceeding the level of performance of (OI) was 100%, for the (PV) was 30% and 2% for the (SC). The results obtained are very interesting because, though, the research has focused for a typical construction in Peru; the study to can be extended to different buildings. © The 17th World Conference on Earthquake Engineering.

Instituciones: Universidad Nacional San Luis Gonzaga; Universidad Nacional Pedro Ruiz Gallo; Universidad Nacional Federico Villarreal