Seismic Assessment of Peruvian Confined Masonry Dwellings Using Fragility Functions


Abstract eng:
The evaluation of the seismic performance of buildings in seismic-prone regions is very important because the structures with inadequate seismic performance are the main causes of economic and human losses. Structural seismic performance can be evaluated using fragility functions, which allow the estimation of the probable damage due to a seismic event. In Lima, Peru, many dwellings are constructed with confined masonry (CM) walls. The low cost of this typology makes it the most representative and most extended construction system in the city for low-rise dwellings. In this study, an analytical approach was adopted to construct fragility functions for low-rise dwellings whose vertical and lateral resistance systems are CM walls. This structural system has been typically used since 1940. Numerical models based on the samples of one-, two-, and three-story dwellings were analyzed, and the properties of their main structural elements were defined based on the experimental results. A series of nonlinear dynamic analyses was performed using strong-motion records of seismic events around the world. Simulated ground motion records in Lima assuming the occurrence of an earthquake scenario were also employed. The fragility functions for the dwellings were constructed assuming that the damage ratios follow a lognormal distribution. The results show that one-story CM dwellings will perform in accordance with the Peruvian seismic design standard whereas two- and three-story dwellings will suffer irreparable damage.

Contributors:
Conference Title:
Conference Title:
16th World Conference on Earthquake Engineering
Conference Venue:
Santiago (CL)
Conference Dates:
2017-01-09 / 2017-01-13
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Text je chráněný podle autorského zákona č. 121/2000 Sb.



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 Record created 2017-01-18, last modified 2017-01-18


Original version of the author's contribution as presented on USB, paper 645.:
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