Browsing by Author "Aguilar Alberca, Eddy Daniel"

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Caracterización física y mecánica del adobe en el cantón Cuenca
(2017) Aguilar Alberca, Eddy Daniel; Quezada Zambrano, Rosa Angelica; García Erazo, Hernán Alfredo
The raw earth is one of the oldest and most widely used construction materials worldwide, it has been popular for its easy production, workability, also for its important thermal properties, fire retardant, moisture balance inside the building, as well as being economic and reusable. Despite benefits of raw earth as construction material, it became obsolete by the appearance of new building materials (steel, concrete, etc.) more polluting and energy-demanding, but which, unlike land It can have a better seismic behavior. That is why it is important to study the behavior and physical and mechanical characteristics of adobe, one of the most widespread raw-earth construction techniques in our region. The study has physical tests (granulometry, liquid limit, plastic limit, index of plasticity and content of organic matter) and mechanical (compression, flexion and indirect traction). Important information for structural design of new buildings, conservation of existing buildings and to determine the vulnerability of this type of construction to seismic forces. Providing a tool in the structural field, allowing the designer to have data for basic calculations or software modeling and analysis of structures by means of finite elements, especially in nonlinear calculations, and thus better approximate the behavior of buildings.
Comparación de parámetros físicos y mecánicos entre el adobe y el tapial en el austro del Ecuador
(2018) Cárdenas Haro, Xavier Ricardo; Quezada Zambrano, Rosa Angelica; Aguilar Alberca, Eddy Daniel; Cardenas Alvarez, Andres Alejandro; Sarmiento Aviles, Julio Ismael
The earth is one of the oldest and most widely used building materials worldwide. The research is relevant in Ecuador since in its temperate region it possesses five predominant vernacular techniques: adobe, bahareque or quincha, stone, wood and tapial, and the possibility of being able to combine several of these techniques in a single building. The establishment of physical and mechanical parameters of materials from the Austro of Ecuador, provide a tool in the structural field, allowing the designer to have data for basic calculations or advanced modeling with software and analysis of structures with linear and nonlinear procedures, resembling reality the behavior of buildings.
Macro-modeling of adobe piers for seismic analysis of adobe dwellings in Cuenca, Ecuador
(Springer Países Bajos, 2019) Quezada Zambrano, Rosa Angélica; Aguilar Alberca, Eddy Daniel; García Erazo, Hernán Alfredo
Ecuador lies on the eastern rim of the seismically active area known as the Pacific Ring of Fire. In 1999, Cuenca’s unique architecture and historical buildings were listed in the UNESCO World Heritage Trust sites; many of these dwellings are composed of adobe walls. The aim of this papers is to present the mechanical characteristics of adobe walls representative of Cuenca’s historical buildings and a equivalent frame model to approximate the strength and vulnerability of a historical building, the behavior of masonry is represented from a macro-model approach. The properties of units and piers are obtained from experimental tests performed in the laboratories of the University of Cuenca. The numerical procedure is based on a macro-element model that is capable of reproducing flexural-rocking and shear failure modes. The macro-element is capable of representing with only one element the behavior of a whole masonry panel. The numerical results of adobe piers are compared with those of experimental tests, showing similar values for the elastic and inelastic ranges with close approximation of maximum shear strength and type of failure. This comparison allowed to estimate the mechanical properties of the macro-element model, which were used to model a historical building, Seminario San Luis. Research in this area will contribute to the conservation of historical dwellings and for future retrofitting and strengthening.