Area de Construcciones Arquitectónicas
http://hdl.handle.net/10259.4/2506
2024-03-28T21:40:47ZEarthquake Vulnerability and the State-of-the-Art of Hybrid Structural Reinforcement and Soil Improvement Methods for NonEngineered Structures
http://hdl.handle.net/10259/8626
Earthquake Vulnerability and the State-of-the-Art of Hybrid Structural Reinforcement and Soil Improvement Methods for NonEngineered Structures
Ortiz Palacio, Santiago; Ibáñez García, Sergio; López Ausín, Víctor; Porres Benito, José Ángel
In the course of the last decades many efforts have been focused on the design of effective
countermeasures to retrofit pre-existing engineered structures -including both buildings and
civil constructions- to properly resist the effects of primary and secondary seismic failure induced mechanisms. On the other hand, due to several reasons which will be here
summarized, non-engineered buildings (e.g.: unreinforced masonry structures, shack housing
in developing countries, adobe dwellings, etc.) have not been so widely studied. As these
structures are far from simple, they pose many interesting issues regarding earthquake
vulnerability and the challenging tasks of either retrofitting their design or performing soil and
foundation improvements in frequently difficult psycho-environmental settings. In this
presentation, some of the most outstanding features of non-engineered buildings will be
detailed. Also, a summary of some of the most effective approaches of hybrid structural and
soil improvements will be discussed with some guidelines for future studies.
Trabajo presentado en: 6th International Conference on Earthquake Geotechnical (6ICEGE) that was held on November 1-4, 2015, in Christchurch, New Zealand
2015-01-01T00:00:00ZGeophysical and in situ testing applied to site characterisation for nonengineered structures in developing regions
http://hdl.handle.net/10259/8620
Geophysical and in situ testing applied to site characterisation for nonengineered structures in developing regions
Ortiz Palacio, Santiago; Ibáñez García, Sergio; López Ausín, Víctor; Porres Benito, José Ángel
Residential dwellings have been estimated to represent more than three quarters of the building
stock around the globe, most of which are not believed to have been properly engineered (that is, designed by
architects or engineers and constructed by skilful workers with adequate materials). Narrowing the scope to
developing countries, over a 90 percent of the population is deemed to be living, working or studying in nonengineered buildings. In earthquake-prone regions, these weak structures can become deathtraps for their occupants, forlornly adding to the casualty lists of recent and past seismic events. Thus, improving seismic resilience for vernacular housing has increasingly become a main theme for researchers. Also, other geotechnical
issues, such as subsidences, slope instabilities, excessive settlement on soft soils, groundwater, inadequate designs, etc., are responsible for substantial risk of structural damages, ranging from small structural pathologies
to major disasters. One of the keys to develop new safe and efficient foundation designs, or to retrofit existing
ones, is to make available portable and low-budget ground probing techniques. This document will describe
some of the most feasible in situ devices available, as well as discuss how seismic and electric methods can
be used as portable and powerful tools to characterise both the strength and the stiffness of soils thanks to recent developments in stablishing the relationship between geophysical results and traditional geotechnical parameters (such as the SPT, the angle of internal friction, shear strength, etc.), with the help of statistical methods and dimensional analysis techniques.
Trabajo presentado para el congreso Geotechnical and Geophysical Site Characterisation 5 de 2016
2016-01-01T00:00:00ZLatest experiences in complex soil investigation in the Spanish Plateau of Castile
http://hdl.handle.net/10259/8618
Latest experiences in complex soil investigation in the Spanish Plateau of Castile
Ortiz Palacio, Santiago; Porres Benito, José Ángel
In recent years, many geotechnical specialists must confront the need of accomplishing difficult
designing tasks under very restricted budgets (tasks such as the design of complex foundations, avoiding
slope movements, the development of earth containing structures, evaluating and repairing settlements, etc.).
This implies that soil in-situ probing and lab testing may be quite limited on many occasions. Therefore, it
usually falls on the specialists the responsibility of optimizing the resources at hand to fully characterize the
morphological and mechanical soil qualities, gaining the best safety factors as possible in the process. In order
to illustrate this challenging duty of optimization of the problem of quality soil characterization vs. probing
budget, some of the latest and most interesting of the authors’ experiences in the Spanish Plateau of Castile
will be covered.
Trabajo presentado en: Fourth International Conference on Geotechnical and Geophysical Site Characterisation, ISC'4, held at the Porto de Galinhas (Pernanbuco), Brazil, 18-21 September 2012.
2013-01-01T00:00:00ZComparative Life Cycle Assessment (LCA) between standard gypsum ceiling tile and polyurethane gypsum ceiling tile
http://hdl.handle.net/10259/7492
Comparative Life Cycle Assessment (LCA) between standard gypsum ceiling tile and polyurethane gypsum ceiling tile
Rodrigo Bravo, Alba; Alameda Cuenca-Romero, Lourdes; Calderón Carpintero, Verónica; Rodríguez Sáiz, Ángel; Gutiérrez González, Sara
In this paper, the LCA of two gypsum ceiling tiles is compared, the first one is a traditional gypsum tile
and the second is a new eco ceiling tile in which polyurethane foam waste has been incorporated.
Both tiles were made at one of the largest gypsum tile factories in Europe. The life cycle assessment
has been considered from cradle to grave for which the corresponding production stages have been
defined. This includes the extraction and transportation of raw materials, the manufacturing process,
transportation to the client, the use of the product and the end of its useful life. The results show that
the tile with polyurethane has a better environmental performance than the standard commercial ceiling
tile. This is quantified as a 14% reduction in energy consumption, a 14% reduction in CO2 emissions and a
25% reduction in water consumption compared with the standard tile, all the while maintaining the technical performance. An analysis of the results suggests that the new eco product has a competitive advantage on the market thanks to its environmental improvements and good technical performance.
2022-03-01T00:00:00Z