Dina Bakr, Tarek, El-Hashimy, and Marwan Shedid
Dina Bakr, Tarek, Teaching Assistant, Department of Structural Engineering, Faculty of Engineering, Ain Shams University, Cairo, Egypt, dina.hussienbakr@eng.asu.edu.eg
El-Hashimy, Assistant Professor, Department of Structural Engineering, Faculty of Engineering, Ain Shams University, Cairo, Egypt, t.hashimy@eng.asu.edu.eg
Marwan Shedid Associate Professor, Department of Structural Engineering, Faculty of Engineering, Ain Shams University, Cairo, Egypt, marwan.shedid@eng.asu.edu.eg
ABSTRACT
Reinforced masonry walls (RMW) are commonly designed to resist gravity loads and in plane seismic force. Recently, several studies have focused on the out of plane performance of different
types of masonry walls when subjected to blast load. Studies showed that adding boundary elements (BEs) on the edges of the walls enhances their blast resistance. The aim of this study is to investigate the influence of alternative (RMW) configurations using (BEs) on the out of plane resistance of walls under far-field blast loads. Four (RMW) with different (BEs) configurations are selected and detailed according to ASCE 59-11. Aspect ratios, reinforcement ratios, axial loads and materials are kept constant for all walls. In this respect, finite element models of the walls are developed using multi-layer shell elements. First, static push over analysis is conducted on the models to determine the influence of the different configurations on the flexure capacities. Afterwards, dynamic analysis under two different far-field blast loads is carried out to assess the response of the walls and level of damage according to ASCE 59-11. The parameters studied in
this research are the boundary conditions and blast waves of different scaled distances. The current study facilitates a better understanding of the influence of (BEs) configuration on (RMW) in an effort to optimize (RMW) design and enhance their resistance to blast loads.
KEYWORDS: blast loading, boundary elements, dynamic response, out of plane performance, reinforced masonry walls
