Dynamic response of rocking cracked masonry walls
- 60 Downloads
The behaviour of masonry constructions results to be very far from the one characterizing ductile structures. In masonry constructions, the seismic action activates a rocking motion rather than a dissipating mechanism. A strength resource of masonry structures, properly reinforced in order to avoid early local failures, consists in exhibiting rocking behaviour, until a failure condition is attained. Aim of the paper is to investigate the dynamic behaviour of masonry single storey walls, according to Housner’s studies and innovatively introducing the effect of diagonal cracks developing from the toes of the piers and shown by typical post-earthquake cracking patterns. The proposed procedure can be easily applied to the case of multi-storey regular masonry walls with openings representing the main resistant structural components of a masonry building. Starting from the evaluation of the incipient rocking acceleration of the system, the free and forced motions of the wall are examined. In the paper, according to the classical Housner’s approach, the energy dissipation occurring during the impact is modelled. Finally, a numerical application, considering a simple constant horizontal acceleration impulse of given duration has been carried out.
KeywordsMasonry walls No tension material Rocking Cracking Restitution factor Constant acceleration pulse
Compliance with ethical standards
Conflict of interest
The authors declare that they have no conflict of interest.
- 2.Housner GW (1963) The behaviour of inverted pendulum structures during earthquakes. Bull Seismol Soc Am 53(2):403–417Google Scholar
- 7.Liberatore D, Spera G, D’Alessandro G, Nigro D (2002) Rocking of slender blocks subjected to seismic motion of the base. In: 12th European conference on earthquake engineering, London, 9–13, September 2002Google Scholar
- 15.Coccia S, Di Carlo F, Imperatore S (2016) Strength reduction factor for out-of-plane failure mechanisms of masonry walls. In: Brick and block masonry: trends, innovations and challenges—proceedings of the 16th international brick and block masonry conference, IBMAC (pp 137–144)Google Scholar
- 17.Casapulla C, Giresini L, Lourenço PB (2017) Rocking and kinematic approaches for masonry walls as rigid blocks: state of the art and recent developments. Buildings 7(3), article number 69Google Scholar
- 20.Kalliontzis D, Schultz AE (2017) Characterizing the in-plane rocking response of masonry walls with unbonded posttensioning. J Struct Eng (United States), 143(9), article number 04017110Google Scholar
- 24.Ochserdorf JA (2002) Collapse of masonry structures. Ph.D. Dissertation, University of Cambridge, Cambridge, U.KGoogle Scholar
- 25.Coccia S, Di Carlo F, Forino G (2016) Strength of cracked masonry buttresses under horizontal loads. In: Brick and block masonry: trends, innovations and challenges—proceedings of the 16th international brick and block masonry conference, IBMAC (pp. 155–164)Google Scholar
- 27.Coccia S, Como M, Di Carlo F (2016) In-plane strength under seismic forces of multi-storey masonry walls reinforced by steel ties. In: 16th Int. Brick and Block Masonry Conference, Padova, Italy, June 26–30, 2016Google Scholar