Cyclic Behavior of Slender RC Structural Walls Reinforced with High Strength Steel

Abstract

There remain very few studies on the application of high-strength steel on slender structural walls Four slender structural walls with an aspect ratio of 2 75 and high shear demand were tested under combined lateral and axial loads to investigate the impact of high-strength steel and concrete materials on the seismic behavior of slender RC walls Then verified the experimental results with finite element models based on Modified Compression Field Theory (MCFT) According to experimental results high-strength steel postponed the inelastic behavior of the slender walls leading the slender walls with high shear demand to a brittle failure mode and limited the development of the plastic hinge The high-strength steel had a little impact on the lateral stiffness and the shear deformation of the slender walls but decreased the shear sliding deformation component Therefore it should be avoided to apply high-strength steel on slender structural walls with high shear demand to prevent a brittle behavior Increased the concrete strength about 46 percentage increased 11 percentage and 28 percentage of the lateral stiffness and total energy dissipation and decreased 45 percentage of shear sliding deformation component Cyclic loads had an imperceptible influence on the lateral strength stiffness and ability of energy dissipation of slender walls but increased the shear sliding deformation component Based on experiment and parameter study finite element models founded on MCFT were recommended to predict the development of lateral strength and shear sliding deformation

Date of Award	2019
Original language	English
Supervisor	Chung-Chan Hung (Supervisor)