Experimental Validation of Minimum Vertical Reinforcement Requirements for Ductile Concrete Walls
Source abstract
Abstract
During the 2010/2011 Canterbury earthquakes, several lightly reinforced concrete (RC) wall in multi-storey buildings formed a limited number of cracks at the wall base as opposed to distributed cracking. Recent research suggests that the current minimum vertical reinforcement limits in NZS 3101:2006 may be insufficient to ensure well distributed cracking in ductile plastic hinge regions. A comprehensive experimental program has been conducted to investigate the seismic behaviour of RC walls with minimum vertical reinforcement in accordance with NZS 3101:2006. A total of six test walls were planned to examine the effect of axial load, M/VLw ratio, and stirrups in the end region on RC walls with distributed minimum vertical reinforcement. The observed lateral load response, extent of crack distribution, hysteretic behaviour, failure mode, and drift capacity of three of the tested walls are discussed. The experimental results confirmed that current minimum vertical reinforcing limits in NZS 3101:2006 are insufficient to form a large number of secondary cracks. The failure mode for all walls was controlled by bar buckling and subsequent fracture. The lateral drift capacity of all three tested walls was 2.5% and both the M/VLw ratio and the end region stirrups had no significant influence the drift capacity.
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Research context
OpenAlex topics: Structural Behavior of Reinforced Concrete · Structural Load-Bearing Analysis · Structural Response to Dynamic Loads
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (29)
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