Seismic vulnerability in rural houses: the case of Santa Marianita - Manta – Ecuador
Investigation article
Keywords:
natural disasters, seismic risk, seismic vulnerability, housingAbstract
Among the factors that affect the construction of structurally vulnerable housing are the socioeconomic conditions of the rural sectors, poor planning, regulation and control to promote human settlements and the inefficient application of construction techniques with local materials. Therefore, the objective of this research is based on determining the vulnerability index of rural homes in the Santa Marianita parish of the city of Manta-Ecuador, since being located in a coastal area of high seismicity it is important to study this parameter, analyzing the technical characteristics of the houses, such as architectural, structural and construction errors. Most of these homes lack the aforementioned characteristics, with low-quality materials and made by the inhabitants of the area themselves. For the research we worked with a sample of 25 homes located in the rugged areas of the rural parish, because it is the area of greatest impact according to its morphology. The field information was collected through the FEMA-154 form, determining the vulnerability and seismic danger of the surveyed homes, the main damages are at the masonry level, followed by the foundation and structural elements such as columns and beams. The results obtained allowed to propose rehabilitation recommendations for rural homes with S indexes lower than 2 and in raising awareness of the inhabitants at the time of executing a work.
Keywords: natural disasters, seismic risk, seismic vulnerability, housing.
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Chunga, K., Quiñonez, M., Huaman, F., Besenzon, D., Mulas, M., Garcés, D., Larreta, E., Michetti., A., & Gorshkov, A. (2016). Geología de Terremotos y Tsunami. Quito, Ecuador: Sección Nacional del Ecuador del Instituto Panamericano de Geografía en Historia.
Cuenca, D., Castillo, H. L. C., Ojeda, F., Jaramillo, C., & Castillo, D. (2019). Caracterización Multifractal de la Actividad Sísmica en las provincias de Esmeraldas y Manabí. Brazilian Applied Science Review, 3(4), 1859-1871.
Flores, R (2015). Vulnerabilidad, peligro y riesgo sísmico en viviendas autoconstruidas del Distrito de Samegua, Región Moquegua. Tesis de grado. Universidad José Carlos Mariátegui. Obtenido de: https://alicia.concytec.gob.pe/vufind/Record/UJCM_ce85437a966967def7e7921c95875065/Details
GAD Manta. (2019). Actualización del plan de desarrollo y ordenamiento territorial de la parroquia rural Santa Marianita, 233. Gobierno Autónomo Descentralizado de Manta: GAD.
García-Arribas, R. (2016). Evaluación sísmica de los edificios existentes. Utilidad de los métodos aproximados. En: Actas de CONTART 2016. La Convención de la Edificación. (pp. 69-78). Granada: Colegio Oficial de Aparejadores y Arquitectos Técnicos de Granada.
Gómez-Soberón, C., Ordaz-Schroeder, M., & Tena-Colunga, A. (2005). Leyes de atenuación en desplazamiento y aceleración para el diseño sísmico de estructuras con aislamiento sísmico en la costa del Pacífico. In Proceedings, XV Congreso Nacional de Ingeniería Sísmica.
Guaicha, F. (2017). Estudio de vulnerabilidad sísmica del colegio 9 de octubre aplicando la norma ecuatoriana de construcción mediante metodología FEMA 154. Trabajo de pregrado. Unidad Académica de Ingeniería Civil, Universidad Técnica de Machala. Obtenido de: http://repositorio.utmachala.edu.ec/bitstream/48000/11080/1/TUAIC_2017_IC_CD0034.pdf
Moncayo, M. (2016). Enfoque de energía sísmica liberada: en busca de las características del comportamiento sísmico de Ecuador e identificación de las amenazas sísmicas. Alternativas, 17(3), 224-230. DOI: 10.23878/alternativas.v17i3.231
Moroni, M. O., Astroza, M., & Acevedo, C. (2004). Performance and seismic vulnerability of masonry housing types used in Chile. Journal of performance of constructed facilities, 18(3), 173-179. https://doi.org/10.1061/(ASCE)0887-3828(2004)18:3(173)
Preciado, A., Ramirez-Gaytan, A., Santos, J. C., & Rodriguez, O. (2020). Seismic vulnerability assessment and reduction at a territorial scale on masonry and adobe housing by rapid vulnerability indicators: The case of Tlajomulco, Mexico. International journal of disaster risk reduction, 44, 101425. https://doi.org/10.1016/j.ijdrr.2019.101425
Romero-Toledo, H., & Romero-Aravena, H. (2015). Ecología política de los desastres: vulnerabilidad, exclusión socio-territorial y erupciones volcánicas en la patagonia chilena. Magallania (Punta Arenas), 43(3), 7-26.
Theurer, M., Velasco, G., Mora, C., Montenegro, M., & Cordova, J. (2017). Terremotos mayores a 6.5 en escala Richter ocurridos en Ecuador desde 1900 hasta 1970. Ingeniería, 21(2), 55-64.
Valente, M., Milani, G., Grande, E., & Formisano, A. (2019). Historical masonry building aggregates: advanced numerical insight for an effective seismic assessment on two row housing compounds. Engineering Structures, 190, 360-379. https://doi.org/10.1016/j.engstruct.2019.04.025
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