- Title
- The performance of brick masonry subjected to in-plane loading
- Creator
- Dhanasekar, M.
- Relation
- University of Newcastle Research Higher Degree Thesis
- Resource Type
- thesis
- Date
- 1985
- Description
- Research Doctorate - Doctor of Philosophy (PhD)
- Description
- This thesis presents a comprehensive, macroscopic material model for the in-plane behaviour of brick masonry and describes its incorporation into an incremental, non-linear finite element computer model capable of simulating the behaviour of masonry at all levels of applied load. The material model is derived from a large number of biaxial tests on half scale brick masonry panels and consists of elastic and in-elastic deformation characteristics and a failure criterion. In the elastic range, the brick masonry behaves, on average, isotropically. However, its in-elastic stress-strain relations and failure criterion are significantly influenced by the presence of mortar joints acting as planes of weakness. The material model allows the brick masonry to be modelled as a continuum. Despite the fact that the influence of individual bricks and joints is averaged , depending on the state of stress , the failure can occur in the joints alone, in a combined mechanism involving both brick and joint or by crushing and s palling of the masonry. The results of the finite element model have been verified by comparing the results of racking and vertical load tests on steel frames with brick masonry infill. Infilled frames of varying height/length ratio and frame/wall stiffness and infill panels of differing curing history (and hence differing strength) have been considered. Sensitivity analyses of the parameters of the material model have been carried out with reference to racking tests on infilled frames. The modulus of elasticity and the strength parameters were found to be the most significant properties of masonry. The model has also been used to carry out a study of infilled frame and shear wall behaviour. In both cases various geometries and relative strength parameters have been used and their significance on the strength of walls investigated. These studies illustrate the potential of the model as both a research tool and as an aid to design.
- Subject
- brick masonry; in-plane loading; in-plane behaviour; masonry
- Identifier
- http://hdl.handle.net/1959.13/1312458
- Identifier
- uon:22397
- Rights
- Copyright 1985 M. Dhanasekar
- Language
- eng
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