Title:
Modeling of Glass Fiber-Reinforced Polymer-Reinforced Squat Walls under Lateral Loading
Author(s):
Ju-Hyung Kim, Yail J. Kim, and Hong-Gun Park
Publication:
Structural Journal
Volume:
121
Issue:
3
Appears on pages(s):
201-214
Keywords:
failure mode; glass fiber-reinforced polymer (GFRP); modeling; shear; squat wall
DOI:
10.14359/51740489
Date:
5/1/2024
Abstract:
This paper presents mechanics-based modeling approaches to
understand the shear behavior of squat walls reinforced with glass
fiber-reinforced polymer (GFRP) bars when subjected to lateral
loading. The applicability of design provisions in published specifications is examined using collated laboratory test data, resulting in the need for developing revised guidelines. Analytical studies are undertaken to evaluate the effects of reinforcement type on the response of load-bearing walls and to establish failure criteria
as a function of various stress states in constituents. Obvious
distinctions are noticed in the behavior of squat walls with steel
and GFRP reinforcing bars owing to their different reinforcing
schemes, tension-stiffening mechanisms, and material properties.
Newly proposed equations outperform existing ones in terms of
predicting the shear capacity of GFRP-reinforced squat walls.
Furthermore, based on geometric and reinforcing attributes, a
novel determinant index is derived for the classification of structural
walls into squat and slender categories, which overcomes the
limitations of prevalent methodologies based solely on aspect ratio.
A practical method is suggested to adjust the failure mode of walls
with GFRP reinforcing bars, incorporating a characteristic reinforcement ratio.
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