Three-Dimensional Nonlinear Finite Element Analysis on Reinforced Concrete Walls Enhanced by Transverse Confining Steel

Abstract eng:
In high-rise reinforced concrete buildings, the edge area of wall columns and core walls with a rectangular section is subjected to high compressive stress at flexural yielding. Reinforcing this area is considered to be effective for improving the deformation capacity of the wall columns and core walls. In shear walls, reinforcing the boundary columns and panels, which are subjected to high compressive stress, effectively improves the deformation capacity of shear walls. Previously, lateral loading tests of wall columns1), shear walls2) and core walls3) were conducted on areas of concrete confinement of high compressive stress. This paper analyzes those lateral loading tests using the three-dimensional nonlinear finite element method (FEM), and examines the ductility of wall columns, shear walls and L-shaped core walls. The results show that reinforcing the area of high compressive stress improves the deformation capacity of these components.

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