TY - GEN
T1 - A simplified model to assess out-of-plane response of rubble masonry walls derived from experimental evidence
AU - Fonti, R.
AU - Barthel, R.
AU - Borri, A.
AU - Savelli, R.
AU - Candela, M.
N1 - Publisher Copyright:
© 2016 Taylor & Francis Group, London.
PY - 2016
Y1 - 2016
N2 - This paper addresses the problem of assessing the seismic resistance of rubble masonry walls subject to normal lateral forces. An improvement of the common displacement-based procedure to evaluate masonry vulnerability under seismic loads is presented with respect to isolated panels. Recommendations for the selection of an appropriate level of degradation, especially for historicalwalls, are also given. These subjects have been examined by means of experimental quasi-static pushover tests on existing walls. Three main observations, which are considered as typical for rubble masonry, were analyzed through on site experiments. These being: (i) a strong changing of stiffness associated to the motion of the pivot points, (ii) a secondary mode of damage which goes with a new fully cracked cross-section, and (iii) a comparison between the overturning and envelope curves. Additionally, reinforcement procedures were tested, focusing on the influence of cross-sectional interlocks. Therefore, predictions of the overturning forces and displacements required to cause failures of cantilever walls are compared with the results of the quasi-static experiments using the force-equilibrium formulations.
AB - This paper addresses the problem of assessing the seismic resistance of rubble masonry walls subject to normal lateral forces. An improvement of the common displacement-based procedure to evaluate masonry vulnerability under seismic loads is presented with respect to isolated panels. Recommendations for the selection of an appropriate level of degradation, especially for historicalwalls, are also given. These subjects have been examined by means of experimental quasi-static pushover tests on existing walls. Three main observations, which are considered as typical for rubble masonry, were analyzed through on site experiments. These being: (i) a strong changing of stiffness associated to the motion of the pivot points, (ii) a secondary mode of damage which goes with a new fully cracked cross-section, and (iii) a comparison between the overturning and envelope curves. Additionally, reinforcement procedures were tested, focusing on the influence of cross-sectional interlocks. Therefore, predictions of the overturning forces and displacements required to cause failures of cantilever walls are compared with the results of the quasi-static experiments using the force-equilibrium formulations.
UR - http://www.scopus.com/inward/record.url?scp=85002410901&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85002410901
SN - 9781138029514
T3 - Structural Analysis of Historical Constructions: Anamnesis, diagnosis, therapy, controls - Proceedings of the 10th International Conference on Structural Analysis of Historical Constructions, SAHC 2016
SP - 1324
EP - 1331
BT - Structural Analysis of Historical Constructions
A2 - Van Balen, Koen
A2 - Verstrynge, Els
A2 - Van Balen, Koen
PB - CRC Press/Balkema
T2 - 10th International Conference on Structural Analysis of Historical Constructions, SAHC 2016
Y2 - 13 September 2016 through 15 September 2016
ER -