Masonry vaulted structures are diffused all over the world, in many cases inhistorical and monumental buildings, often characterized by high seismic risk. For this reasontheir conservation should be investigated. Composite materials are usually used to retrofitdifferent types of masonry and concrete buildings. The behaviour of masonry arches retrofittedat their intrados and/or extrados surfaces by means of externally bonded composite materials(FRP or FRCM) has been investigated. The load capacity estimate due to compositestrengthening could be performed through finite element analyses. The numerical simulationsprovide important information about the mechanical behaviour of the masonry structures and onthe composite-masonry interaction. However, such numerical analyses present often somedrawbacks. For this reason it is useful to have simplified calculation methods to estimatecapacity increase of masonry vaulted structures due to composite retrofit. Such simplifiedmethods are the goal of this work and they consider linear and nonlinear behaviour of masonry.Validation of the proposed method is carried out by comparing predictions of the load capacityand failure mode with those obtained from shaking table experimental tests.
A simplified approach to evaluate retrofit effects on curved masonry structures
RAMAGLIA, GIANCARLO;
2015-01-01
Abstract
Masonry vaulted structures are diffused all over the world, in many cases inhistorical and monumental buildings, often characterized by high seismic risk. For this reasontheir conservation should be investigated. Composite materials are usually used to retrofitdifferent types of masonry and concrete buildings. The behaviour of masonry arches retrofittedat their intrados and/or extrados surfaces by means of externally bonded composite materials(FRP or FRCM) has been investigated. The load capacity estimate due to compositestrengthening could be performed through finite element analyses. The numerical simulationsprovide important information about the mechanical behaviour of the masonry structures and onthe composite-masonry interaction. However, such numerical analyses present often somedrawbacks. For this reason it is useful to have simplified calculation methods to estimatecapacity increase of masonry vaulted structures due to composite retrofit. Such simplifiedmethods are the goal of this work and they consider linear and nonlinear behaviour of masonry.Validation of the proposed method is carried out by comparing predictions of the load capacityand failure mode with those obtained from shaking table experimental tests.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
