1 Research Assistant, Chair of Structural Design, Faculty of Architecture, Technische Universität Dresden, 01062, Dresden, Germany, Tammam.Bakeer@tu-dresden.de
2 Professor, Chair of Structural Design, Faculty of Architecture, Technische Universität Dresden, 01062, Dresden, Germany, lehrstuhl.tragwerksplanung@mailbox.tu-dresden.de
ABSTRACT
The response of unreinforced masonry structures under horizontal actions like earthquakes or wind has a unique behaviour which differs significantly from the response of other structural systems such as reinforced concrete. This unique behaviour is caused mainly by the high stiffness, brittle material behaviour, and the deformability of the slab system. While, it is common to segment the structure into components to extrapolate out component behaviour and to predict overall structure response, such an approach may neglect important global effects which can result in significant influences. The work focuses on the interaction between masonry structure elements and their influences on the global behaviour. Numerical models based on the discrete / finite element approach of different scales have been built for a typical European masonry terraced house. The numerical models were verified and calibrated with full scale tests performed within the frame of the European research project ESECMaSE. The models have been used to investigate the contribution of each shear wall to the overall capacity of the structure, and to determine the portion of vertical / horizontal loads carried by each wall. The results give an insight into the interaction between the deformation of the slab and the rocking of the shear walls, and show that the slab deformation will significantly influence the vertical load distribution on the shear walls. To neglect the influence of vertical load distributions, strip models were considered. A comparison of the results of the strip model with the results of the global model shows that the strip model results are on the safe side.
KEYWORDS: discrete-finite element method, global structure behaviour, earthquake, wind, masonry stiffening walls, strip models
433.pdf
