IIIT Hyderabad Publications |
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Out of plane behavior of reinforced concrete wall under blast loadingAuthor: Anchal Pandey Date: 2020-02-18 Report no: IIIT/TH/2020/10 Advisor:Pradeep Kumar Ramancharla AbstractIn the past decades, there have been multiple terrorist threats in the world and there is a lack of understanding of the effect of such dynamic loading on buildings. In order to understand the effect of blast loading, study of the dynamic behavior of structures is important. Current country codes do not provide proper guidelines to build a structure to mitigate the effects of such terrorist threats. Therefore, making it essential to study the behavior of structures subjected to impulsive loading. Reinforced walls are one of the first structural elements which are exposed to the loading in case of such events. Thus they become crucial to mitigate the effects of explosions. As part of this research, out of plane behavior of a vertical reinforced wall was studied when subjected to dynamic blast loading. Single degree of freedom system and finite element method were used to carry out numerical modeling of the reinforced wall with appropriate loading and structural approximations. As a part of this study, a tool was developed to implement the finite element method for a reinforced wall in MATLAB. 3D modeling of reinforced wall is done using 20-noded or 8-noded hexahedral elements. Rayleigh damping is used to calculate Damping matrix. The dynamic equilibrium equations are solved using Gaussian quadrature and Newmark’s direct integration scheme. The tool was used to analyze the behavior of reinforced walls under varying percentage steel, damping ratio, standoff distance, reinforcement diameter, charge weight, etc. Full thesis: pdf Centre for Earthquake Engineering |
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