16 results on '"Morillas, Leandro"'
Search Results
2. A semi-empirical method for shear response modelling of masonry infilled frame structures
- Author
-
Barros, José, Chiachío, Manuel, Fernández, Juan, Morillas, Leandro, and Consuegra, Joel
- Published
- 2024
- Full Text
- View/download PDF
3. Energy Dissipation Capacity of RC Columns Subjected to Dynamic Biaxial Seismic Loadings on a Shake Table
- Author
-
Benavent-Climent, Amadeo, Escolano-Margarit, David, Morillas, Leandro, di Prisco, Marco, Series Editor, Chen, Sheng-Hong, Series Editor, Vayas, Ioannis, Series Editor, Kumar Shukla, Sanjay, Series Editor, Sharma, Anuj, Series Editor, Kumar, Nagesh, Series Editor, Wang, Chien Ming, Series Editor, Benavent-Climent, Amadeo, editor, and Mollaioli, Fabrizio, editor
- Published
- 2021
- Full Text
- View/download PDF
4. Acoustic emission in I-214 poplar wood under compressive loading
- Author
-
Rescalvo, Francisco J., Morillas, Leandro, Valverde-Palacios, Ignacio, and Gallego, Antolino
- Published
- 2020
- Full Text
- View/download PDF
5. Plant biomass ashes in cement-based building materials. Feasibility as eco-efficient structural mortars and grouts
- Author
-
González-Kunz, Rocío N., Pineda, Paloma, Bras, Ana, and Morillas, Leandro
- Published
- 2017
- Full Text
- View/download PDF
6. GIS Framework for Rapid Seismic Loss Assessment: Case Study of Granada Metropolitan Area.
- Author
-
Pérez-Docampo, Manuel, Morillas, Leandro, Balmori-Roiz, José Antonio, and Escolano-Margarit, David
- Subjects
- *
METROPOLITAN areas , *GEOSPATIAL data , *INFRASTRUCTURE (Economics) , *GEOGRAPHIC information systems , *STRUCTURAL models - Abstract
Traditional vulnerability methodologies rely on collecting building data through time consuming surveys and visual screening. Geospatial infrastructure systems have rapidly evolved and today we can access massive geospatial data. Digital cadastral databases combine location, attributes, and temporal information for building stock. This paper proposes a GIS-based framework to estimate seismic vulnerability and losses from cadastral data only. The framework is rooted on well-known displacement-based procedures and uses probabilistic models of the building structural capacity. A featured application to 287,503 housing units in metropolitan area of Granada is presented to showcase outputs for decision-making: performance displacement, damage level and repair cost. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
7. GIS Framework for Rapid Seismic Loss Assessment: Case Study of Granada Metropolitan Area
- Author
-
Pérez-Docampo, Manuel, primary, Morillas, Leandro, additional, Balmori-Roiz, José Antonio, additional, and Escolano-Margarit, David, additional
- Published
- 2022
- Full Text
- View/download PDF
8. Interactive structural design of hyperbolic grid shells
- Author
-
Chahade, Tarick, primary, Schober, Kay-Uwe, additional, and Morillas, Leandro, additional
- Published
- 2022
- Full Text
- View/download PDF
9. Estimation of Cyclic Demand in Metallic Yielding Dampers Installed on Frame Structures
- Author
-
Morillas, Leandro, primary and Escolano-Margarit, David, additional
- Published
- 2020
- Full Text
- View/download PDF
10. Effect of the Importance Factor on the Seismic Performance of Health Facilities in Medium Seismicity Regions
- Author
-
Pérez Jiménez, Francisco Javier, primary and Morillas, Leandro, additional
- Published
- 2019
- Full Text
- View/download PDF
11. Effect of the Importance Factor on the Seismic Performance of Health Facilities in Medium Seismicity Regions.
- Author
-
Pérez Jiménez, Francisco Javier and Morillas, Leandro
- Subjects
- *
HEALTH facilities , *REINFORCED concrete buildings , *AUTHENTIC assessment , *STRUCTURAL frames , *BUILDING repair - Abstract
This paper addresses the effect of the importance factor on seismic performance by comparing four prototype health facilities located in a medium seismicity region in Europe. The buildings have Reinforced Concrete (RC) frame structures designed with importance factors 1.0, 1.2, 1.4, and 1.5. Performance assessment is based on the FEMA P-58-1 methodology. This study comprises nonlinear time history analyses of the building structure, the identification of structural and nonstructural performance groups, the probabilistic expression of structural response, and the quantification of damage and repair costs by means of fragility relations. The evaluation of the prototype buildings is the basis to discuss the impact of the importance factor on the performance under occasional and rare ground motions. This works reveals that seismic performance of the analyzed prototypes is not appropriate in terms of damage, loss of functionality and repair costs. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
12. Empleo de morteros estructurales eco-eficientes. Revisión crítica desde un análisis DAFO
- Author
-
González Kunz, Rocío Nieves, Pineda Palomo, Paloma, Brás, Ana, Morillas, Leandro, Mercader-Moyano, Pilar (Coordinador), Mercader-Moyano, Pilar, Universidad de Sevilla. Departamento de Estructuras de Edificación e Ingeniería del terreno, and Universidad de Sevilla. HUM965: Transhumancias : Arquitectura, Tecnología, Ciencia y Arte
- Subjects
Refurbishment ,Mortar ,Eco-Eficiente ,Rehabilitación ,Refuerzo estructural ,Eco-Efficient ,Structural Retrofitting ,Mortero - Abstract
One of the main climate trigger are CO2 emissions. In the field of architecture and construction, one of the most harmful materials is the cement due to its employment and its polluting power (about 5 and 8% of the worldwide CO2 emissions). Thus, the search of an alternative material is essential. This paper shows the possibility of using eco-efficient mortars as structural materials, in order to guarantee both safety and environment preservation in the strengthening/refurbishment/retrofitting of structures. In those mortars, the binder can be substituted by organic or inorganic materials (e.g. fly ash, ground granulated blast furnace slag, rice husk ash, palm oil fuel ash). From this strategy, the waste reduction is promoted, as wastes are immobilised without polluting the environment essential. Thus, it is encouraged the re-use of architecture which is an essential factor to get a more sustainable habitat. The obtained results allow setting a guide that makes easier the selection of eco-efficient mortars (guaranteeing both structural safety and environment preservation) to the agents involved in processes of structural works. Uno de los principales detonantes del cambio climático son las emisiones de CO2. En el ámbito de la arquitectura y la construcción, uno de los materiales más perjudiciales en relación a su uso y su poder contaminante es el cemento (entre el 5 y 8% de las emisiones de CO2 en el mundo son generadas por éste). Por tanto, es fundamental buscar alternativas a su uso. Esta investigación muestra la posibilidad del uso de morteros eco-eficientes como materiales estructurales que garanticen tanto la seguridad de la construcción como la preservación del medioambiente en intervenciones de refuerzo/ rehabilitación/consolidación estructural. En estos morteros, el conglomerante o bien es un material distinto al cemento o se realiza la sustitución de parte de éste por materiales orgánicos o inorgánicos como cenizas volantes, residuos de altos hornos, cáscaras de arroz, cenizas de aceite de palma, entre otros, con lo que también se propiciaría la reducción de residuos que pasarían a inmovilizarse sin contaminar la naturaleza. Así, se fomenta el reciclaje de la arquitectura, siendo éste un factor clave para un hábitat sostenible. Los resultados obtenidos permiten establecer una guía que facilite a los agentes implicados en las actuaciones de intervención estructural la selección de morteros eco-eficientes óptimos, tanto para garantizar la seguridad como para preservar el medioambiente.
- Published
- 2017
13. Research on eco-efficient structural mortars
- Author
-
Gonzalez-Kunz, Rocío N., Pineda Palomo, Paloma, Morillas, Leandro, Brás, Ana, Tejedor Cabrera, Antonio (Coordinador), Molina Huelva, Marta (Coordinador), Tejedor Cabrera, Antonio, Molina Huelva, Marta, Universidad de Sevilla. Departamento de Mecánica de Medios Contínuos y Teoría de Estructuras, and Universidad de Sevilla: HUM965: Transhumancias : Arquitectura, Tecnología, Ciencia y Arte
- Subjects
cenizas de biomasa ,eco-eficiente ,eco-efficient ,Structural mortar ,biomass ashes ,Mortero estructural - Abstract
The main research goal is proving the possibility of using eco-efficient mortars as structural materials, to guarantee both safety and environment preservation in the strengthening/refurbishment/retrofitting of structures. After a comprehensive review on ecoefficient mortars, mechanical properties, rheological behaviour, setting times, durability, and environmental impact (GWP and EE) were analysed. Thus, a qualitative comparison between result obtained and OPC reference cement mortar was possible. Research is completed with an experimental characterisation of ashes, and mechanical test of mortar/concrete samples with plant biomass ashes. The research aims to demonstrate the feasibility and potential of plant biomass ashes in cement-based building materials. The performance from those mortars must be studied with static and dynamic loads as well as the resulting CO2 emission reduction. Finally, this research will propose a protocol selection of eco-efficient mortars based on an analytical hierarchy process (AHP)-based assessment method. Resumen: capacidades mecánicas suficientes para ser usados en refuerzos estructurales y que den resultados aceptables desde un punto de vista mecánico, económico y medioambiental. Tras realizar una exhaustiva revisión bibliográfica , se analizan las propiedades mecánicas, el comportamiento reológico, tiempo de fraguado, durabilidad e impacto medioambiental (GWP y EE), lo que permite realizar una comparativa cualitativa entre los resultados obtenidos y el mortero de cemento Portland de referencia. La investigación se completa con ensayos mecánicos realizados a morteros de cemento con sustitutivos de cenizas de biomasa vegetal obtenidas de plantas de producción de energía, las cuales han sido previamente caracterizadas. Con el desarrollo de la investigación se espera demostrar la viabilidad del uso de cenizas de biomasa vegetal como sustitutivo parcial del cemento con valores de resistencias suficientes, analizando el desempeño de estos morteros eco-eficientes desde la seguridad estructural, bajo cargas estáticas y dinámicas, acompañado del análisis de beneficios medioambientales para la reducción de las emisiones de CO2. Como objetivo final, se espera concluir con la elaboración de un protocolo de selección de dichos morteros eco-eficientes empleando el método de jerarquías analíticas (AHP).
- Published
- 2017
14. Research on eco-efficient structural mortars
- Author
-
Tejedor Cabrera, Antonio, Molina Huelva, Marta, Universidad de Sevilla. Departamento de Mecánica de Medios Contínuos y Teoría de Estructuras, Universidad de Sevilla: HUM965: Transhumancias : Arquitectura, Tecnología, Ciencia y Arte, Gonzalez-Kunz, Rocío N., Pineda Palomo, Paloma, Morillas, Leandro, Brás, Ana, Tejedor Cabrera, Antonio, Molina Huelva, Marta, Universidad de Sevilla. Departamento de Mecánica de Medios Contínuos y Teoría de Estructuras, Universidad de Sevilla: HUM965: Transhumancias : Arquitectura, Tecnología, Ciencia y Arte, Gonzalez-Kunz, Rocío N., Pineda Palomo, Paloma, Morillas, Leandro, and Brás, Ana
- Abstract
The main research goal is proving the possibility of using eco-efficient mortars as structural materials, to guarantee both safety and environment preservation in the strengthening/refurbishment/retrofitting of structures. After a comprehensive review on ecoefficient mortars, mechanical properties, rheological behaviour, setting times, durability, and environmental impact (GWP and EE) were analysed. Thus, a qualitative comparison between result obtained and OPC reference cement mortar was possible. Research is completed with an experimental characterisation of ashes, and mechanical test of mortar/concrete samples with plant biomass ashes. The research aims to demonstrate the feasibility and potential of plant biomass ashes in cement-based building materials. The performance from those mortars must be studied with static and dynamic loads as well as the resulting CO2 emission reduction. Finally, this research will propose a protocol selection of eco-efficient mortars based on an analytical hierarchy process (AHP)-based assessment method., Resumen: capacidades mecánicas suficientes para ser usados en refuerzos estructurales y que den resultados aceptables desde un punto de vista mecánico, económico y medioambiental. Tras realizar una exhaustiva revisión bibliográfica , se analizan las propiedades mecánicas, el comportamiento reológico, tiempo de fraguado, durabilidad e impacto medioambiental (GWP y EE), lo que permite realizar una comparativa cualitativa entre los resultados obtenidos y el mortero de cemento Portland de referencia. La investigación se completa con ensayos mecánicos realizados a morteros de cemento con sustitutivos de cenizas de biomasa vegetal obtenidas de plantas de producción de energía, las cuales han sido previamente caracterizadas. Con el desarrollo de la investigación se espera demostrar la viabilidad del uso de cenizas de biomasa vegetal como sustitutivo parcial del cemento con valores de resistencias suficientes, analizando el desempeño de estos morteros eco-eficientes desde la seguridad estructural, bajo cargas estáticas y dinámicas, acompañado del análisis de beneficios medioambientales para la reducción de las emisiones de CO2. Como objetivo final, se espera concluir con la elaboración de un protocolo de selección de dichos morteros eco-eficientes empleando el método de jerarquías analíticas (AHP).
- Published
- 2017
15. The use of structural eco-efficient mortars. A critical review from a SWOT analysis
- Author
-
Mercader-Moyano, Pilar, Universidad de Sevilla. Departamento de Estructuras de Edificación e Ingeniería del terreno, Universidad de Sevilla. HUM965: Transhumancias : Arquitectura, Tecnología, Ciencia y Arte, González Kunz, Rocío Nieves, Pineda Palomo, Paloma, Brás, Ana, Morillas, Leandro, Mercader-Moyano, Pilar, Universidad de Sevilla. Departamento de Estructuras de Edificación e Ingeniería del terreno, Universidad de Sevilla. HUM965: Transhumancias : Arquitectura, Tecnología, Ciencia y Arte, González Kunz, Rocío Nieves, Pineda Palomo, Paloma, Brás, Ana, and Morillas, Leandro
- Abstract
One of the main climate trigger are CO2 emissions. In the field of architecture and construction, one of the most harmful materials is the cement due to its employment and its polluting power (about 5 and 8% of the worldwide CO2 emissions). Thus, the search of an alternative material is essential. This paper shows the possibility of using eco-efficient mortars as structural materials, in order to guarantee both safety and environment preservation in the strengthening/refurbishment/retrofitting of structures. In those mortars, the binder can be substituted by organic or inorganic materials (e.g. fly ash, ground granulated blast furnace slag, rice husk ash, palm oil fuel ash). From this strategy, the waste reduction is promoted, as wastes are immobilised without polluting the environment essential. Thus, it is encouraged the re-use of architecture which is an essential factor to get a more sustainable habitat. The obtained results allow setting a guide that makes easier the selection of eco-efficient mortars (guaranteeing both structural safety and environment preservation) to the agents involved in processes of structural works., Uno de los principales detonantes del cambio climático son las emisiones de CO2. En el ámbito de la arquitectura y la construcción, uno de los materiales más perjudiciales en relación a su uso y su poder contaminante es el cemento (entre el 5 y 8% de las emisiones de CO2 en el mundo son generadas por éste). Por tanto, es fundamental buscar alternativas a su uso. Esta investigación muestra la posibilidad del uso de morteros eco-eficientes como materiales estructurales que garanticen tanto la seguridad de la construcción como la preservación del medioambiente en intervenciones de refuerzo/ rehabilitación/consolidación estructural. En estos morteros, el conglomerante o bien es un material distinto al cemento o se realiza la sustitución de parte de éste por materiales orgánicos o inorgánicos como cenizas volantes, residuos de altos hornos, cáscaras de arroz, cenizas de aceite de palma, entre otros, con lo que también se propiciaría la reducción de residuos que pasarían a inmovilizarse sin contaminar la naturaleza. Así, se fomenta el reciclaje de la arquitectura, siendo éste un factor clave para un hábitat sostenible. Los resultados obtenidos permiten establecer una guía que facilite a los agentes implicados en las actuaciones de intervención estructural la selección de morteros eco-eficientes óptimos, tanto para garantizar la seguridad como para preservar el medioambiente.
- Published
- 2017
16. Seismic performance and damage evaluation of a reinforced concrete frame with hysteretic dampers through shake-table tests.
- Author
-
Benavent‐Climent, Amadeo, Morillas, Leandro, and Escolano‐Margarit, David
- Subjects
REINFORCED concrete ,HYSTERESIS ,DAMPERS (Mechanical devices) ,SHAKING table tests ,STRAIN energy - Abstract
SUMMARY Passive energy dissipation devices are increasingly implemented in frame structures to improve their performance under seismic loading. Most guidelines for designing this type of system retain the requirements applicable to frames without dampers, and this hinders taking full advantage of the benefits of implementing dampers. Further, assessing the extent of damage suffered by the frame and by the dampers for different levels of seismic hazard is of paramount importance in the framework of performance-based design. This paper presents an experimental investigation whose objectives are to provide empirical data on the response of reinforced concrete (RC) frames equipped with hysteretic dampers (dynamic response and damage) and to evaluate the need for the frame to form a strong column-weak beam mechanism and dissipate large amounts of plastic strain energy. To this end, shake-table tests were conducted on a 2/5-scale RC frame with hysteretic dampers. The frame was designed only for gravitational loads. The dampers provided lateral strength and stiffness, respectively, three and 12 times greater than those of the frame. The test structure was subjected to a sequence of seismic simulations that represented different levels of seismic hazard. The RC frame showed a performance level of 'immediate occupancy', with maximum rotation demands below 20% of the ultimate capacity. The dampers dissipated most of the energy input by the earthquake. It is shown that combining hysteretic dampers with flexible reinforced concrete frames leads to structures with improved seismic performance and that requirements of conventional RC frames (without dampers) can be relieved. Copyright © 2014 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.