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Performance design of reinforced concrete shear walls detailed with self-centering reinforcement
Highlights The results of a parametric study performed on 72 five-story RC shear walls. A method to provide innovative RC shear walls with sufficient levels of stiffness. A method to provide innovative RC shear walls for different levels of self-centering and ductility.
Abstract In the last decade, damage-resisting reinforced concrete (RC) shear walls, which offer improved self-centering and damage properties compared to conventional RC shear walls, have become an attractive research trend in structural engineering. Recent studies have experimentally proved that damage-resisting RC shear walls that benefit from advanced materials and details sustain reduced permanent displacements and concrete damage, cracking and spalling, than contemporary code-compliant walls. However, the evidence is still scarce as the available experimental studies have only addressed single-story shear walls with a limited selection of length, height, axial loading, and reinforcement ratio due to financial and experimental constraints. Furthermore, most of the performed studies were focused on the “as is” performance of innovative walls that have been fitted with novel details without following explicit design guidelines for such shear walls. In this case, numerical models that closely capture the response of tested innovative RC walls can be used to overcome the mentioned limitations of experimental studies, making it possible to study several shear walls with various dimensions, reinforcement ratios, and axial loads. The present paper, first, discusses developing verified analysis models using the state-of-the-art RC finite element analysis software, VecTor2, and performing a parametric study on three types of self-centering shear walls with different aspect ratios, axial load ratios, and reinforcement ratios. Then, the paper shows how the obtained results can be used to develop a set of design criteria for the studied shear walls, which were detailed with a type of self-centering reinforcement consisting of either shape memory alloy bars, glass fiber reinforced polymer bars, or post-tensioned high-strength steel strands. Specifically, this paper discusses how the ductility, self-centering, energy dissipation, and stiffness in self-centering shear walls change with the geometric, reinforcement, and loading specifications of the walls. In addition, a design method and three graphical tools are presented in this paper to aid the design of self-centering, ductility, and stiffness properties of self-centering shear walls.
Performance design of reinforced concrete shear walls detailed with self-centering reinforcement
Highlights The results of a parametric study performed on 72 five-story RC shear walls. A method to provide innovative RC shear walls with sufficient levels of stiffness. A method to provide innovative RC shear walls for different levels of self-centering and ductility.
Abstract In the last decade, damage-resisting reinforced concrete (RC) shear walls, which offer improved self-centering and damage properties compared to conventional RC shear walls, have become an attractive research trend in structural engineering. Recent studies have experimentally proved that damage-resisting RC shear walls that benefit from advanced materials and details sustain reduced permanent displacements and concrete damage, cracking and spalling, than contemporary code-compliant walls. However, the evidence is still scarce as the available experimental studies have only addressed single-story shear walls with a limited selection of length, height, axial loading, and reinforcement ratio due to financial and experimental constraints. Furthermore, most of the performed studies were focused on the “as is” performance of innovative walls that have been fitted with novel details without following explicit design guidelines for such shear walls. In this case, numerical models that closely capture the response of tested innovative RC walls can be used to overcome the mentioned limitations of experimental studies, making it possible to study several shear walls with various dimensions, reinforcement ratios, and axial loads. The present paper, first, discusses developing verified analysis models using the state-of-the-art RC finite element analysis software, VecTor2, and performing a parametric study on three types of self-centering shear walls with different aspect ratios, axial load ratios, and reinforcement ratios. Then, the paper shows how the obtained results can be used to develop a set of design criteria for the studied shear walls, which were detailed with a type of self-centering reinforcement consisting of either shape memory alloy bars, glass fiber reinforced polymer bars, or post-tensioned high-strength steel strands. Specifically, this paper discusses how the ductility, self-centering, energy dissipation, and stiffness in self-centering shear walls change with the geometric, reinforcement, and loading specifications of the walls. In addition, a design method and three graphical tools are presented in this paper to aid the design of self-centering, ductility, and stiffness properties of self-centering shear walls.
Performance design of reinforced concrete shear walls detailed with self-centering reinforcement
Tolou-Kian, Mohammad J. (author) / Cruz-Noguez, Carlos (author)
Engineering Structures ; 252
2021-10-30
Article (Journal)
Electronic Resource
English
Finite Element Analysis of Self-centering Reinforced Concrete Shear Walls
| Springer Verlag | 2023