A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The effect of damage and creep interaction on the behaviour of masonry columns including interface debonding and cracking
Abstract Creep can produce significant effects on the structural behaviour of composite quasi-brittle systems, such as masonry, by altering the stress distribution between and within structural elements. The failure of a masonry element can be accelerated through damage incurred by weathering or degradation from creep effects. In this study, a three-dimensional finite element model of a grouted masonry column is used to evaluate the significance of the interaction of creep and damage on the structural behaviour of the column. The effects of Poisson’s ratio in producing differential out-of-plane constraint stresses can be simulated using this model. By utilizing a cracking criterion and incorporating a cohesive zone material (CZM) model for the brickwork-grout interface, the sequence and the patterns of cracking of the masonry column, debonding of the interface and local failure are examined. It is shown that debonding of the brickwork-grout interface occurs prior to cracking of the outer shell of brickwork. Case studies are presented to demonstrate the significance of the interaction of creep and damage on local failure, cracking and debonding. It is shown that cracking and debonding can result in a stability failure of a masonry column that was originally in a stable condition. Further work on local buckling and post-buckling analysis seems crucial to explain composite masonry behaviour.
The effect of damage and creep interaction on the behaviour of masonry columns including interface debonding and cracking
Abstract Creep can produce significant effects on the structural behaviour of composite quasi-brittle systems, such as masonry, by altering the stress distribution between and within structural elements. The failure of a masonry element can be accelerated through damage incurred by weathering or degradation from creep effects. In this study, a three-dimensional finite element model of a grouted masonry column is used to evaluate the significance of the interaction of creep and damage on the structural behaviour of the column. The effects of Poisson’s ratio in producing differential out-of-plane constraint stresses can be simulated using this model. By utilizing a cracking criterion and incorporating a cohesive zone material (CZM) model for the brickwork-grout interface, the sequence and the patterns of cracking of the masonry column, debonding of the interface and local failure are examined. It is shown that debonding of the brickwork-grout interface occurs prior to cracking of the outer shell of brickwork. Case studies are presented to demonstrate the significance of the interaction of creep and damage on local failure, cracking and debonding. It is shown that cracking and debonding can result in a stability failure of a masonry column that was originally in a stable condition. Further work on local buckling and post-buckling analysis seems crucial to explain composite masonry behaviour.
The effect of damage and creep interaction on the behaviour of masonry columns including interface debonding and cracking
Kim, Jung J. (author) / Fan, Tai (author) / Reda Taha, Mahmoud M. (author) / Shrive, Nigel G. (author)
2011
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2012
Simulating damage and creep interaction in masonry columns considering interface debonding
| British Library Conference Proceedings | 2010