Compressive Shear Strength of Reinforced Concrete Walls at High Ductility Levels
Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia
*
Author to whom correspondence should be addressed.
Sustainability 2020, 12(11), 4434; https://doi.org/10.3390/su12114434
Received: 28 April 2020
/
Revised: 25 May 2020
/
Accepted: 27 May 2020
/
Published: 29 May 2020
(This article belongs to the Special Issue Sustainable Structural Design for High-Performance Buildings and Infrastructures)
The amount of energy dissipated during an earthquake depends on the type of failure of the concrete element. Shear failure should be avoided because less energy is spent than that due to bending failure. Compression controlled failure is usually avoided by increasing the thickness of a wall. Considering that the current code largely decreases this strength, this becomes hard to achieve in practice. Because of that, the analysis described in this paper is made to determine the reason for a large strength reduction at high curvatures. Mechanisms contributing to compression controlled shear strength are analysed. Using Rankine’s strength theorem, section equilibrium, arch mechanism and bending moment-curvature diagrams, the influence of different parameters are observed and charted. The findings are compared to the existing procedures and a new, simple and safe analytical equation is derived. Compression controlled shear strength is mainly influenced by axial force, followed by the amount of longitudinal reinforcement and the achieved confinement. Results show that the value of strength reduces significantly with the increase of ductility and that some reduction exists even for lower levels of curvature. Current code provisions may lead to unsafe design, so designers should be careful when dealing with potentially critical walls.
View Full-Text
Keywords:
analytical model; ductile walls; shear strength; capacity reduction; Eurocode 8
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
- Supplementary File 1:
RAR-Document (RAR, 309 KiB)
MDPI and ACS Style
Kišiček, T.; Renić, T.; Lazarević, D.; Hafner, I. Compressive Shear Strength of Reinforced Concrete Walls at High Ductility Levels. Sustainability 2020, 12, 4434. https://doi.org/10.3390/su12114434
AMA Style
Kišiček T, Renić T, Lazarević D, Hafner I. Compressive Shear Strength of Reinforced Concrete Walls at High Ductility Levels. Sustainability. 2020; 12(11):4434. https://doi.org/10.3390/su12114434
Chicago/Turabian StyleKišiček, Tomislav, Tvrtko Renić, Damir Lazarević, and Ivan Hafner. 2020. "Compressive Shear Strength of Reinforced Concrete Walls at High Ductility Levels" Sustainability 12, no. 11: 4434. https://doi.org/10.3390/su12114434
Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
