DURAND NEYRA , Percy

Hoy en día, en España, existe una gran cantidad de presas de todo tipo, de las cuales aproximadamente el 60% son de materiales sueltos. El hecho de la gran aceptación y construcción de este tipo de estructuras en la última década se debe a los bajos costes obtenidos (presa del Yeguas, Canales, etc.), caso de que se puedan utilizar los...

The seismicity of the southwestern Iberian Peninsula is moderate but large events with long return periods occur (≈ 200 years). This exceeds the life of various generations, making the population unacquainted with the seismic hazard. On the one hand, this results in a low demanding seismic code which increases the seismic vulnerability and,...

In this research, the 1531 earthquake is revisited. This was one of the major earthquakes that affected Portugal and, specifically, Lisbon. According to coeval sources, between 1000 and 30,000 casualties were caused in Lisbon by this tremor. This range shows the great uncertainty regarding the real effects of this Event. Analyzing the...

Most earthquake-related losses are enhanced by soil amplification phenomena, especially in areas where high vulnerability assets coexist. These mechanisms are frequently inferred from empirical formulas. These procedures are based on the average shear-wave velocity to 30 m depth (Vs30) as a proxy for amplification events. However, past analysis...

Dentro del lector técnico asociado a la mecánica del suelo y la geotecnia, se realizan ensayos triaxiales a muestras inalteradas del terreno para averiguar sus propiedades resistentes. En estos ensayos se aplica primero una presión de confinamiento a la m

En este trabajo, se estudia el efecto de enfriamiento pasivo por fachadas ventiladas, en edificios bajo las condiciones climáticas habituales del sur de España. En dichas condiciones climáticas, conseguir confort en el interior de las viviendas supone generalmente un fuerte consumo energético en los periodos de verano. El uso de fachadas...

Dispositivo de agarre de probetas de suelo de granulometría fina para ensayos de tracción constituido por ventosas de vacío (8) que se fijan a las caras transversales de una probeta cilíndrica (17) mediante el establecimiento del vacío entre el volumen in

Perfeccionamientos en edómetros para aplicación de cargas en células edométricas.Los perfeccionamientos consisten en unos medios de adaptación del edómetro para poder aplicar cargas en células edométricas de hasta 210 mm de diámetro con o sin control de s

Rock fracture in geo-materials is a complex phenomenon due to its intrinsic characteristics and the potential external loading conditions. As a result, these materials can experience intricate fracture patterns endowing various cracking phenomena such as: Branching, coalescence, shielding, and amplification, among many others. In this article,...

Existing RC framed buildings lack significant ductility, especially when they have been built with pre-code criteria. Improving their ductile capacity can help to prevent them from the brittle collapse mechanism and to reduce the seismic damage expected. This paper aims to investigate the enhancement of the ductile response behaviour of RC...

Existing reinforced concrete (RC) structures might not comply with current seismic codes due to their aseismic design and construction date. By seismically retrofitting them, it is possible to improve their seismic performance to resist the expected seismic loads. However, selecting the best solution is challenging since social and...