Supplementary material to "Mechanical model to assess the vulnerability of thin reinforced concrete walls to out‐of‐plane instability"
| Main Authors: | Rosso, Angelica, Almeida, João, Beyer, Katrin |
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| Format: | info software |
| Terbitan: |
, 2019
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/2592337 |
Daftar Isi:
- This repository contains the Matlab-files with the new mechanical model for predicting the critical tensile strain that leads out-of-plane failure of boundary elements of walls. Abstract of paper: The out‐of‐plane instability of reinforced concrete walls under in‐plane seismic loading is a collapse mechanism previously observed only in experimental tests that has now been seen in recent earthquakes. The wall component primarily involved in the instability is the boundary element, often approximated as an equivalent prism subjected to tensile‐compressive loading, and the maximum tensile strain experienced by this element was previously identified as the trigger for out‐of‐plane instability. A recent experimental test on 12 prisms reinforced with a single layer of rebar provided new insight into the mechanism and local phenomena that occur during the development of the instability. Additionally, by comparing thin wall tests and numerical simulations, the limits of previous assumptions and approximations of the boundary element were identified. The main findings of the experimental test and the numerical simulations are briefly recalled in this study as the basis of a new advanced mechanical model. The proposed mechanical model predicts the out-of-plane instability behaviour of thin walls with a single layer of reinforcement and fixed‐fixed supports at the ends. Its main assumptions and implementations are presented and discussed, and the response is extensively validated against experimental and numerical results. Initially developed for isolated boundary elements, the model was then slightly adapted to better reproduce wall behaviour. The model differs from existing ones in that various boundary conditions are possible, it considers different curvature and vertical displacement profiles along the buckling height and it better reproduces the behaviour of single‐layered members.