Estudio y análisis de la vulnerabilidad sísmica de la ciudad de Riobamba: cálculo de los Índices de vulnerabilidad de las diferentes tipologías estructurales determinadas en la Zona 1 de estudio Identificada en la ciudad de Riobamba.

Abstract

The research carried out sought to determine the seismic vulnerability of a specific sector or area of the city of Riobamba, using the methodology proposed by Giovinazzi and Lagomarsino. For this purpose, in the first place, the different structural typologies present in the study area were identified. Afterwards, we proceeded to collect the information and prepare a photographic file where all the construction characteristics of the structures are available, by conducting surveys in the software or application known as IDCT (Inventory Data Capture Tools). Then, the vulnerability indexes for each structure were calculated applying the provisions of the methodology, which specifies that a typological, regional vulnerability index and seismic behavior modifiers should be obtained. Once the vulnerability indices were obtained for each analyzed structure, they were associated into classes ranging from class A, this being the most critical, to class F, as provided by the methodology and the European Macroseismic Scale. A vulnerability index that oscillates between values of 0.80 and 1.00 was obtained, so most of the buildings or structures studied belong to vulnerability class A, which indicates that it is highly dangerous. Therefore, it was concluded that the city of Riobamba presents a great seismic danger, since it has structures that do not comply with the current construction regulations in the country, in addition to the presence of structural irregularities and mostly informal construction, which, at the time of a seismic event of great intensity, they will be seriously affected.