Salvador Ivorra | University of Alicante / Universidad de Alicante (original) (raw)
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Papers by Salvador Ivorra
The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several physical, mec... more The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several physical, mechanical, chemical, and biochemical types of pathologies along its history: rock alveolization, efflorescence, biological activity, and capillary ascent of groundwater. However, during the last two decades, a new phenomenon has seriously affected the church: ground subsidence caused by aquifer overexploitation. Subsidence is a process that affects the whole Vega Baja of the Segura River basin and consists of gradual sinking in the ground surface caused by soil consolidation due to a pore pressure decrease. This phenomenon has been studied by differential synthetic aperture radar interferometry techniques, which illustrate settlements up to 100 mm for the 1993–2009 period for the whole Orihuela city. Although no differential synthetic aperture radar interferometry information is available for the church due to the loss of interferometric coherence, the spatial analysis of nearby deformation combined with fieldwork has advanced the current understanding on the mechanisms that affect the Santas Justa and Rufina church. These results show the potential interest and the limitations of using this remote sensing technique as a complementary tool for the forensic analysis of building structures.
Applied Mechanics and …, Jan 1, 2012
Structural Health Monitoring, 2012
ABSTRACT The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several phys... more ABSTRACT The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several physical, mechanical, chemical, and biochemical types of pathologies along its history: rock alveolization, efflorescence, biological activity, and capillary ascent of groundwater. However, during the last two decades, a new phenomenon has seriously affected the church: ground subsidence caused by aquifer overexploitation. Subsidence is a process that affects the whole Vega Baja of the Segura River basin and consists of gradual sinking in the ground surface caused by soil consolidation due to a pore pressure decrease. This phenomenon has been studied by differential synthetic aperture radar interferometry techniques, which illustrate settlements up to 100 mm for the 1993-2009 period for the whole Orihuela city. Although no differential synthetic aperture radar interferometry information is available for the church due to the loss of interferometric coherence, the spatial analysis of nearby deformation combined with fieldwork has advanced the current understanding on the mechanisms that affect the Santas Justa and Rufina church. These results show the potential interest and the limitations of using this remote sensing technique as a complementary tool for the forensic analysis of building structures. © The Author(s) 2012.
Engineering Structures, 2010
This paper describes a study carried out on the bell tower of the Church of Santas Justa and Rufi... more This paper describes a study carried out on the bell tower of the Church of Santas Justa and Rufina in Orihuela in the Province of Alicante, Spain. The study was made to predict the evolution of its dynamic behaviour in relation to subsidence caused by variations in the level of the water table during periods of drought. Initial calibration of the developed numerical model was based on the dynamic characteristics of the tower in free vibration. The numerical model included details of both the structure and the surrounding terrain to a depth of ten meters, as indicated by geotechnical tests. Sensitivity studies were made of the terrain’s elastic characteristics with the aim of evaluating the dynamic amplification factor of the soil–structure interaction due to dynamic forces generated by the swinging of the bells in the tower.
En este trabajo se muestran los resultados de una serie de ensayos de laboratorio realizados para... more En este trabajo se muestran los resultados de una serie de ensayos de laboratorio realizados para estudiar el efecto de las altas temperaturas en las propiedades físicas y mecánicas de una calcarenita muy usada como material de construcción en edificios y monumentos históricos de la ciudad de Alicante. El objetivo es evaluar el daño térmico producido en el material al exponerlo a diferentes temperaturas y la influencia de los diferentes procesos de enfriamiento (al aire y por inmersión en agua), así como la viabilidad del diagnóstico del daño mediante métodos no destructivos (ultrasonidos). Se han utilizado probetas cilíndricas extraídas de bloques de roca sobre las que se han realizado ensayos de caracterización del material intacto obteniendo la porosidad, velocidades de propagación de las ondas P y S, módulos dinámicos y estáticos y resistencia a compresión uniaxial. El calentamiento se ha efectuado en horno eléctrico a temperaturas de entre 105 y 600ºC, en intervalos de 100ºC. P...
![Research paper thumbnail of Low velocity vehicle impact against building structures: A review of relevant codes [Impactos de vehículos a baja velocidad sobre estructuras de edificación: Revisión de la normativa relacionada]](https://attachments.academia-assets.com/39661873/thumbnails/1.jpg)
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Se presenta un estudio de las propiedades estáticas y dinámicas de vigas de madera reforzadas con... more Se presenta un estudio de las propiedades estáticas y dinámicas de vigas de madera reforzadas con laminados de fibra de vidrio (GFRP). El objetivo es analizar el estado límite de servicio (ELS) de vibraciones, y la mejora de la ductilidad, mediante el uso de refuerzos de GFRP dentro de la rehabilitación de forjados unidireccionales. Se estudiaron diferentes vigas de dimensiones 95x150x3150mm3, de madera de pino silvestre. Como refuerzo se utilizaron tres capas, de espesor total 3mm, de material compuesto de tejido de fibra de vidrio bidireccional (0/90º) y resina epoxy, aplicadas manualmente. Se analizaron dos tipologías de refuerzo aplicadas en toda la longitud de las vigas. La primera mediante refuerzo de la cara inferior, y la segunda aumentado el refuerzo a lo largo de las caras laterales, hasta la mitad del canto de la viga. Los materiales fueron caracterizados estática y dinámicamente, obteniendo los módulos Elásticos, la tensión de rotura, y el factor de amortiguamiento para ...
Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing, 2009
ABSTRACT
Proceedings of the Fifteenth UK Conference of the Association of Computational Mechanics in Engineering, 2007
Materials and Structures, 2014
Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, 2014
Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, 2014
ABSTRACT Damping of a precast reinforced concrete box have been measured under different depths o... more ABSTRACT Damping of a precast reinforced concrete box have been measured under different depths of burial, from 0 to 2.5 m. Dynamic excitation was applied by means of a truck and a speed bump. Acceleration was registered on the middle of the ceiling of three adjacent concrete boxes and damping was obtained by determining the exponential decay of this signal. Increase of damping with depth of burial could not be proved, but the peak acceleration was clearly decreasing with depth of burial. Nevertheless, it was proved that damping increases with velocity.
The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several physical, mec... more The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several physical, mechanical, chemical, and biochemical types of pathologies along its history: rock alveolization, efflorescence, biological activity, and capillary ascent of groundwater. However, during the last two decades, a new phenomenon has seriously affected the church: ground subsidence caused by aquifer overexploitation. Subsidence is a process that affects the whole Vega Baja of the Segura River basin and consists of gradual sinking in the ground surface caused by soil consolidation due to a pore pressure decrease. This phenomenon has been studied by differential synthetic aperture radar interferometry techniques, which illustrate settlements up to 100 mm for the 1993–2009 period for the whole Orihuela city. Although no differential synthetic aperture radar interferometry information is available for the church due to the loss of interferometric coherence, the spatial analysis of nearby deformation combined with fieldwork has advanced the current understanding on the mechanisms that affect the Santas Justa and Rufina church. These results show the potential interest and the limitations of using this remote sensing technique as a complementary tool for the forensic analysis of building structures.
Applied Mechanics and …, Jan 1, 2012
Structural Health Monitoring, 2012
ABSTRACT The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several phys... more ABSTRACT The Santas Justa and Rufina Gothic church (fourteenth century) has suffered several physical, mechanical, chemical, and biochemical types of pathologies along its history: rock alveolization, efflorescence, biological activity, and capillary ascent of groundwater. However, during the last two decades, a new phenomenon has seriously affected the church: ground subsidence caused by aquifer overexploitation. Subsidence is a process that affects the whole Vega Baja of the Segura River basin and consists of gradual sinking in the ground surface caused by soil consolidation due to a pore pressure decrease. This phenomenon has been studied by differential synthetic aperture radar interferometry techniques, which illustrate settlements up to 100 mm for the 1993-2009 period for the whole Orihuela city. Although no differential synthetic aperture radar interferometry information is available for the church due to the loss of interferometric coherence, the spatial analysis of nearby deformation combined with fieldwork has advanced the current understanding on the mechanisms that affect the Santas Justa and Rufina church. These results show the potential interest and the limitations of using this remote sensing technique as a complementary tool for the forensic analysis of building structures. © The Author(s) 2012.
Engineering Structures, 2010
This paper describes a study carried out on the bell tower of the Church of Santas Justa and Rufi... more This paper describes a study carried out on the bell tower of the Church of Santas Justa and Rufina in Orihuela in the Province of Alicante, Spain. The study was made to predict the evolution of its dynamic behaviour in relation to subsidence caused by variations in the level of the water table during periods of drought. Initial calibration of the developed numerical model was based on the dynamic characteristics of the tower in free vibration. The numerical model included details of both the structure and the surrounding terrain to a depth of ten meters, as indicated by geotechnical tests. Sensitivity studies were made of the terrain’s elastic characteristics with the aim of evaluating the dynamic amplification factor of the soil–structure interaction due to dynamic forces generated by the swinging of the bells in the tower.
En este trabajo se muestran los resultados de una serie de ensayos de laboratorio realizados para... more En este trabajo se muestran los resultados de una serie de ensayos de laboratorio realizados para estudiar el efecto de las altas temperaturas en las propiedades físicas y mecánicas de una calcarenita muy usada como material de construcción en edificios y monumentos históricos de la ciudad de Alicante. El objetivo es evaluar el daño térmico producido en el material al exponerlo a diferentes temperaturas y la influencia de los diferentes procesos de enfriamiento (al aire y por inmersión en agua), así como la viabilidad del diagnóstico del daño mediante métodos no destructivos (ultrasonidos). Se han utilizado probetas cilíndricas extraídas de bloques de roca sobre las que se han realizado ensayos de caracterización del material intacto obteniendo la porosidad, velocidades de propagación de las ondas P y S, módulos dinámicos y estáticos y resistencia a compresión uniaxial. El calentamiento se ha efectuado en horno eléctrico a temperaturas de entre 105 y 600ºC, en intervalos de 100ºC. P...
Se presenta un estudio de las propiedades estáticas y dinámicas de vigas de madera reforzadas con... more Se presenta un estudio de las propiedades estáticas y dinámicas de vigas de madera reforzadas con laminados de fibra de vidrio (GFRP). El objetivo es analizar el estado límite de servicio (ELS) de vibraciones, y la mejora de la ductilidad, mediante el uso de refuerzos de GFRP dentro de la rehabilitación de forjados unidireccionales. Se estudiaron diferentes vigas de dimensiones 95x150x3150mm3, de madera de pino silvestre. Como refuerzo se utilizaron tres capas, de espesor total 3mm, de material compuesto de tejido de fibra de vidrio bidireccional (0/90º) y resina epoxy, aplicadas manualmente. Se analizaron dos tipologías de refuerzo aplicadas en toda la longitud de las vigas. La primera mediante refuerzo de la cara inferior, y la segunda aumentado el refuerzo a lo largo de las caras laterales, hasta la mitad del canto de la viga. Los materiales fueron caracterizados estática y dinámicamente, obteniendo los módulos Elásticos, la tensión de rotura, y el factor de amortiguamiento para ...
Proceedings of the Twelfth International Conference on Civil, Structural and Environmental Engineering Computing, 2009
ABSTRACT
Proceedings of the Fifteenth UK Conference of the Association of Computational Mechanics in Engineering, 2007
Materials and Structures, 2014
Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, 2014
Rock Engineering and Rock Mechanics: Structures in and on Rock Masses, 2014
ABSTRACT Damping of a precast reinforced concrete box have been measured under different depths o... more ABSTRACT Damping of a precast reinforced concrete box have been measured under different depths of burial, from 0 to 2.5 m. Dynamic excitation was applied by means of a truck and a speed bump. Acceleration was registered on the middle of the ceiling of three adjacent concrete boxes and damping was obtained by determining the exponential decay of this signal. Increase of damping with depth of burial could not be proved, but the peak acceleration was clearly decreasing with depth of burial. Nevertheless, it was proved that damping increases with velocity.