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Effect of Openings in Post-tensioned Shear Wall with External Energy Dissipating Reinforcements Under Cyclic Loading
One of the most recent advancements is the use of post-tensioned tendon in conventional shear walls in order to improve the lateral stiffness and lessen the damage caused by devastating earthquakes. A system of well-designed post-tensioned shear wall can significantly improve the seismic performance of a building. The behaviour of unbonded post-tensioned shear wall under lateral load exhibits a stable and large hysteresis loop, which accounts for good inelastic energy dissipation without much loss in the self-centering behaviour. The purpose of this study is to develop and analyze the performance of post-tensioned hybrid shear walls with energy dissipating reinforcements [EDR] for improving the energy dissipating and self-centering capability of shear wall. EDR in the form of simple mild steel rods is considered for the present study which is placed outside the shear wall to facilitate its easy placement and replacement after an earthquake. The system is expected to withstand earthquakes with less damage and residual drift compared to conventional systems and provides cost effective method to mitigate seismic effects. To understand the behaviour of hybrid shear wall, the structure is modelled in ANSYS software. Non-linear static analysis is carried out and the effect of openings under cyclic loading is analysed. Performance of shear wall under different opening configurations like rectangle, square, circle and diamond are carried out and results are compared with a solid shear wall. The openings are having a constant cross-sectional area and the location of openings is not varied in this present study. Results are analyzed based on the response parameters like base shear, stress and strain concentrations, energy dissipation and stiffness degradation and a suitable opening configuration is suggested based on the obtained results.
Effect of Openings in Post-tensioned Shear Wall with External Energy Dissipating Reinforcements Under Cyclic Loading
One of the most recent advancements is the use of post-tensioned tendon in conventional shear walls in order to improve the lateral stiffness and lessen the damage caused by devastating earthquakes. A system of well-designed post-tensioned shear wall can significantly improve the seismic performance of a building. The behaviour of unbonded post-tensioned shear wall under lateral load exhibits a stable and large hysteresis loop, which accounts for good inelastic energy dissipation without much loss in the self-centering behaviour. The purpose of this study is to develop and analyze the performance of post-tensioned hybrid shear walls with energy dissipating reinforcements [EDR] for improving the energy dissipating and self-centering capability of shear wall. EDR in the form of simple mild steel rods is considered for the present study which is placed outside the shear wall to facilitate its easy placement and replacement after an earthquake. The system is expected to withstand earthquakes with less damage and residual drift compared to conventional systems and provides cost effective method to mitigate seismic effects. To understand the behaviour of hybrid shear wall, the structure is modelled in ANSYS software. Non-linear static analysis is carried out and the effect of openings under cyclic loading is analysed. Performance of shear wall under different opening configurations like rectangle, square, circle and diamond are carried out and results are compared with a solid shear wall. The openings are having a constant cross-sectional area and the location of openings is not varied in this present study. Results are analyzed based on the response parameters like base shear, stress and strain concentrations, energy dissipation and stiffness degradation and a suitable opening configuration is suggested based on the obtained results.
Effect of Openings in Post-tensioned Shear Wall with External Energy Dissipating Reinforcements Under Cyclic Loading
Lecture Notes in Civil Engineering
Marano, Giuseppe Carlo (editor) / Rahul, A. V. (editor) / Antony, Jiji (editor) / Unni Kartha, G. (editor) / Kavitha, P. E. (editor) / Preethi, M. (editor) / Benoy, Sneha (author) / Joseph, Asha (author)
International Conference on Structural Engineering and Construction Management ; 2022 ; Angamaly, India
2022-10-30
14 pages
Article/Chapter (Book)
Electronic Resource
English
| Taylor & Francis Verlag | 2022
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| DOAJ | 2022