Multidisciplinary co-operation in building design according to urbanistic zoning and seismic microzonation

Abstract

Abstract. Research and practice in seismology and urban planning interfere concerning the impact of earthquakes on urban areas. The roles of sub-area wide or typological divisions of the town were investigated with the methodology of regression, regarding their contribution to urban earthquake risk management. The inductive data set comprised recovery, preparedness, mitigation and resilience planning. All timely constituted planning types are refound today as layers, as the zoning results are used by differently backgrounded actors: local authorities, civil protection, urban planners, civil engineers. In resilience planning, the urban system is complexly theoretised, then integratedly approached. The steady restructuring process of the urban organism is evident in a dynamic analysis. Although expressed materially, the "urban-frame" is realised spiritually, space adaptation being also social. A retrospective investigation of the role of resilient individual buildings within the urban system of Bucharest, Romania, was undertaken, in order to learn systemic lessons considering the street, an educational environment. (In)formation in the study and decision making process stay in a reciprocal relationship, both being obliged in the (in)formation of the public opinion. For a complete view on resilience, both zoning types, seismic and urbanistic, must be considered and through their superposition new sub-area wide divisions of the town appear, making recommendations according to the vulnerability of the building type.

SiSeRHMap v1.0: a simulator for mapped seismic response using a hybrid model

“…Thus, in prone areas, seismic microzonation studies assume an important role in urban planning and seismic risk management (Lachet et al, 1996;Bianchi Fasani et al, 2008;Compagnoni et al, 2011;Milana et al, 2011;Grasso and Maugeri, 2012;Moscatelli et al, 2014). As a consequence, methods for high levels of seismic microzonation (mapped seismic response studies) aim at providing quantitative data for use in building design (Borcherdt, 1994;Todd and Harris, 1995;Bostenaru Dan, 2005;Kokošin and Gosar, 2013). Many building codes, such as Euro Code 8 and FEMA 356 (2000), require seismic design actions defined by simplified elastic acceleration spectra deriving from local base seismic hazard (as reference natural or virtual stiff rock site which are defined in term of horizontal acceleration probability of exceedance in specified time interval) and site amplification effects.…”

“…However, the 3-D topographic amplification seems to be the combined result of lithological and geometric factors in which the pure topographic effect is difficult to fully quantify in numerous cases (Gallipoli et al, 2013). In addition, in some cases, recorded ground motions show a directionality in the resonance, (Bouchon et al, 1996;Spudich et al, 1996) encountering amplification values greater than the results formulated by the 2-D and 3-D numerical simulation models (Lovati et al, 2011). Furthermore, most comparison studies refer to noise or weak aftershock motions, and thus do not take into account or only slightly take into account the non-linear effect of system ridge lithology (Gutierrez and Singh, 1992).…”

Earthquake impact on settlements: the role of urban and structural morphology

“…Resilience has been approached in this context by the European project RISK UE (Mouroux and Le Brun, 2006), which identified strategic elements in different disaster phases (normal, preparedness, reconstruction). The normal phase, in considering preventive planning, can be divided into mitiga-tion and resilience; hence, Bostenaru Dan (2005) approached the urban planning types which correspond to the phases of the disaster planning cycle of reconstruction, preparedness, mitigation and resilience by providing examples of how these historically defined coping approaches now build (action components) layers, ranging from the simplest (reconstruction) to the most complex (resilience). For a detailed view of the interaction between resilience and morphology, two scales are considered: the urban scale (urban morphology) and the building scale (structural morphology).…”