Title:
Cyclic Behavior of Ultra-High-Performance Concrete Shear Walls with Different Axial-Load Ratios
Author(s):
Rui Hu, Zhi Fang, and Baodan Xu
Publication:
Structural Journal
Volume:
119
Issue:
2
Appears on pages(s):
233-246
Keywords:
high axial-load ratio; seismic behavior; shear wall; ultra-high-performance concrete (UHPC)
DOI:
10.14359/51734339
Date:
3/1/2022
Abstract:
This paper presents a comprehensive study on the cyclic behavior of ultra-high-performance concrete (UHPC) shear walls with different axial-load ratios. A total of four full-scale UHPC shear walls with test axial-load ratios of 0.1, 0.3, 0.35, and 0.4 were tested. The seismic behavior of UHPC shear walls was evaluated, and the influences of the axial-load ratio on the cumulative energy dissipation, strength degradation, and stiffness degradation of the UHPC shear walls were analyzed. The test results indicated that the UHPC shear walls exhibited high energy-dissipation capacity and favorable ductility. Based on the test data and code requirements, the upper limit of the design axial-load ratio of the UHPC shear walls is suggested to be taken as 0.7. The authors proposed a seismic damage model and damage-level classification standard to evaluate the damage level of the UHPC shear walls.
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