THE NEW PERUVIAN MASONRY SEISMIC DESIGN CODE

Quiun D.; Torrealva D.; Silva W. · World Conference on Earthquake Engineering proceedings (2021)

Resumen

Masonry walls are widely used for housing, schools and other buildings up to five stories high all over Peru and other Latin American countries, located in the seismic regions subjected to earthquakes in the subduction zone of the Nasca and South American plates. The Peruvian Masonry Code of 2006, after more than 12 years has been updated by the Peruvian National Committee in which the authors are members. The purpose of the 2020 update is: adapt the Masonry Code to the new Peruvian Seismic Code (2018), divide the specifications regarding confined masonry and reinforced masonry, and also include new items and findings. The masonry constructions in Peru must be able to resist gravity and earthquake loads. The recent 2018 Peruvian Seismic Code has defined a new Seismic Map and Zone Factors, as well as soil factors. Also, the building irregularities in plan and elevation have different factors to be considered in the value of the shear seismic force. Main updates and new items included in the 2020 Masonry Code are: 1) properties for new materials for bricks and blocks, 2) the use of prefabricated bar arrangements in columns for confined masonry, 3) simplified analysis and design procedure for small confined masonry houses of up to three stories high, 4) guidelines for reinforcing, repairing and retrofitting of masonry walls, and 5) updated specifications for out-of-plane seismic forces on masonry walls used as non-structural elements. The new masonry code makes a separation between confined masonry and reinforced masonry specifications, keeps and makes more emphasis in the performance based criteria for design in confined masonry, and leaves the seismic resistance design for reinforced masonry walls. These modifications take into account that most of the masonry constructions on Peru are of confined masonry; while reinforced masonry is mostly used for partition walls. It is expected that the new masonry code will be easier to read and follow for engineers, constructors, teachers and officials. Also, current population should be able to understand that seismic resistant buildings with correctly built masonry walls, can withstand earthquakes, as masonry is the main material for popular constructions. © The 17th World Conference on Earthquake Engineering.

Instituciones: Pontificia Universidad Católica del Perú