DOI: 10.5593/SGEM2014/B11/S5.077


D. Dobre, C. S.Dragomir, E. S. Georgescu, I.S. Borcia
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-07-0 / ISSN 1314-2704, June 19-25, 2014, Book 1, Vol. 1, 589-596 pp

In Romania the rural area is about 90% of the country territory and the share of rural inhabitants, among the highest in Europe, amounts to 47.3% of total population. According to the new seismic design code of buildings, approximately 50% of Romanian territory has a ground acceleration upper than 0.12 g. In these conditions, the article presents some seismic protection measures considered by the owners in the execution of own buildings. Many things of both negative and positive, from the Vrancea 1977 earthquake have learned. Some structural shortcomings of buildings with one or two storey, which were observed at the incidence of intermediate Vrancea earthquake of March 4, 1977, will be emphasized. Also, strengthening solutions are presented as a result of lessons learned from this seismic event. Some structural types like timber structure with bracing and walls with OSB panelling, timber-frame structure filled with masonry brick and mixed structure, with rigid base from masonry and floors with timber frame structure. It is interesting how the transition is made from the rigid structure to the flexible one, knowing that the amplification of efforts appears at the top of them. It is studied how it is treated "the design" of these buildings which is the evidence of local seismic culture, where the flexible system is stiffened by bracing and the beams are arranged by the two orthogonal directions in the plane. The general idea is that in rural areas, even in those affected by earthquakes, an acceptable vulnerability of buildings with a minimum transfer of knowledge in the local community can be maintained. The public policy for seismic safety in rural areas should involve at least four stakeholders: the residents, authorities, researchers and education system.

Keywords:non-engineered buildings, masonry, timber, bracing, belt beams, code rules,Vrancea earthquake.