Structural Assessment and Seismic Performance of Traditional Stone houses in Dropulli region
Author: Nikolla Vesho
Affiliation: Polis University
The settlement of Derviçan are located next to the important urban center of Gjirokastra, a world heritage of UNESCO. Derviçan is the biggest village in the area and has served as an administrative center for many years. Due to massive emigration and migration trends in the past, there are many abandoned houses which have distinct architectural characteristics and reflect cultural and historical values. The villages that have been abandoned in the recent decades, constitute a serious problem which is all too common in many Balkan countries. As a result, many buildings are in a degraded state, both architectural and structural.
The aim of this paper is to examine the problems in Derviçan’s traditional houses and their structures, and to make a technical assessment of the damages prior to a structural repairing strategy in a second phase.
This study will focus on the analysis of old houses and their structures, built with unreinforced traditional masonry, where a lot of problems have been identified as a result of the degradation of material parameters over the years. Initially, there is a need for a detailed analysis of the typology of buildings in this area, and the construction of traditional stone walls and stone tiles without mortar.
After this identification, a matrix will be created with façade and structural damages. The typical damages are cracks in the walls, carvings between the windows, corner damage, wall displacements, and water infiltration and insects. The methodology chosen for this particular context assesses the typical collapse mechanisms. This procedure is also useful to define the seismic vulnerability for other similar regions.
Halicioglu, F. H., Cakir, F. & Demirkesen, S., 2014. Structural assessment of traditional stone-timber houses in Turkey. Gradevinar, 66(8), pp. 727-738.
Baballeku, M., 2014. Vleresimi i demtimeve strukturore ne ndertesat tip te sistemit arsimor, Strukturat prej murature, Tirana: Universiteti Politeknik i Tiranes.
Bashkia Dropull, et al., 2017. The General Local Plan, Analysis and assessment of the territory, Tirane: Polis Press.
Basirico, T. & Enea, D., 10 April 2018. Seismic and Energy Retrofit of the Historic Urban Fabric of Enna
(Italy). Palermo, Italy, MDPI & Faculty of Engineering and Architecture, University of Enna Kore, via delle
Olimpiadi 4, 94100 Enna, Italy, pp. 1-20.
Binda, L., Valluzzi, M. R., Cardani, G. & Saisi, A., 2006. Vulnerability analysis of the historical buildings in
seismic area by a multilevel approach. Asian Journal of Civil Engineering (Building ang Housing) Vol. 7,
No. 4 (2006), pp. 343-357.
CEN Eurocode 6, 2001. Eurocode 6: Design of Masonry Structures - Part 1-1: General rules for buildings - Rules for reinforced and unreinforced masonry. prEN 1996-1-1: Redraft 9A ed. Brussels: EUROPEAN COMMITTEE FOR STANDARDIZATION, TC250, Technical Committee.
CEN Eurocode 8, 2003. Eurocode 8: Design of structures for earthquake resistance Part 3: Strengthening and repair of buildings. prEN 1998- 3:200X ed. Brussels: European Committee for Standardization.
CEN Eurocode 8, 2008. Eurocode 8: Design of structures for earthquake resistance -Part 1: General rules, seismic actions and rules for buildings. FINAL DRAFT prEN 1998-1 ed. Brussels: EUROPEAN COMMITTEE FOR STANDARDIZATION, TC250 Technical Committee.
Cuberi, D., 2015. Inherited ornamental motives of Gjirokastra’s house. Monuments, 53nd ed. Tirana:
Institute of Cultural Monuments Albania.
Guidoboni, E. & Ferrari, G., 2000. The effects of earthquakes in historical cities: The peculiarity of the Italian case. Annali di Geofisica vol. 43, August, N.4(Seismology), pp. 667-686.
Gulchan, N. S., 2007. Observations on earthquake resistance of traditional timber-framed houses in
Turkey. Elsevier, www.elsevier.com, 42(Building and Environment), p. 840–851.
ISTN, 1978, 1989. Albanian technical design codes and updated versions. Tirana: s.n.
Jurina, L. & Peano, A., 2009. Characterization of Brick Masonry Stiffness by Numerical Modelling. Bergamo, Instituto Sperimentale modelli e Strutture s.p.a.
Maio, R., Vicente, R., Formisano, A. & Varum, H., 2014. Seismic Vulnerability of an old stone masonry building agregate in San Pio Delle Camere, Italy. Istanbul, s.n.
Merciu, C. et al., 2018. Mapping accessibility for earthquake hazard response in the historic urban centre of Bucharest. s.l., Copernicus Publications on behalf of the European Geosciences Union, pp. 2011-2026.
Mitrojorgji, J., 2015. Building codes in Albania. City - forming process of traditional settlements. Gjirokastra. Monuments, 53nd ed. Tirana: Institute of Cultural Monuments Albania.
Mosalam, K., Glascoe, L. & Bernier, J., October 07, 2009. Mechanical Properties of Unreinforced Brick Masonry, Section1. Lawrence Livermore National Lab. Journal, pp. 03-26.
Pitilakis, K., Crowley, H. & Kaynia, A. M., 2014. Typology Definition and Fragility Functions for Physical Elements at Seismic Risk. ISBN 978- 94-007-7871-9 ed. New York, London: Springer Science + Business Media Dordrecht.
Russo, V., 2014. Abandoned Historic Towns In The South of Italy. Conservation and Sustainability Issues. Scienza e beni culturali, Quale Sostenibilita per il Restauro, 01-04 luglio, pp. 434-444.
Tomazevic, M., 1999. Earthquake Resistant Design of Masonry Buildings, Series on Innovation in
Structures and Construction. Imperial College Press. London, Volume Volume 1.
Tomazevic, M., 2007. Damage as a Measure for Earthquake Resistant Design of Masonry Structures, Slovenian Experience. Journal of Civil Engineering (Canada), Volume 122, pp. 1040-1047. Vesho, N., Guri, M. & Marku, A., 2019. Ferrocement