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Experimental study on the seismic behavior of steel-reinforced ultra-high-strength concrete frame joints with cyclic loads

Experimental study on the seismic behavior of steel-reinforced ultra-high-strength concrete frame... A research program on the seismic behavior of steel-reinforced ultra-high-strength concrete exterior joints is conducted herein by testing 11 specimens under a reversed cyclic loading profile. This study analyzes the testing results in terms of the load–displacement relationship, ductility, energy dissipation capacity, strength and stiffness degradations, steel panel strain, and confinement in the specimen joints. The axial compression and stirrup volumetric ratios are two significant parameters dominating the shear behavior of the steel-reinforced ultra-high-strength concrete frame exterior joints. The effect of the axial compression ratio on the shear capacity of the steel-reinforced ultra-high-strength concrete frame exterior joints characterized by a dividing point is also proposed. Furthermore, a design formula for the shear strength of the joint core area is derived using the strain analysis method with the shear model that considers the inner concrete compression strut, outer concrete compression strut, steel web panel shear mechanisms, and stirrup confinement mechanisms. The formula is verified by the experiment results. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Advances in Structural Engineering SAGE

Experimental study on the seismic behavior of steel-reinforced ultra-high-strength concrete frame joints with cyclic loads

Advances in Structural Engineering , Volume 21 (2): 17 – Jan 1, 2018

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References (50)

Publisher
SAGE
Copyright
© The Author(s) 2017
ISSN
1369-4332
eISSN
2048-4011
DOI
10.1177/1369433217717116
Publisher site
See Article on Publisher Site

Abstract

A research program on the seismic behavior of steel-reinforced ultra-high-strength concrete exterior joints is conducted herein by testing 11 specimens under a reversed cyclic loading profile. This study analyzes the testing results in terms of the load–displacement relationship, ductility, energy dissipation capacity, strength and stiffness degradations, steel panel strain, and confinement in the specimen joints. The axial compression and stirrup volumetric ratios are two significant parameters dominating the shear behavior of the steel-reinforced ultra-high-strength concrete frame exterior joints. The effect of the axial compression ratio on the shear capacity of the steel-reinforced ultra-high-strength concrete frame exterior joints characterized by a dividing point is also proposed. Furthermore, a design formula for the shear strength of the joint core area is derived using the strain analysis method with the shear model that considers the inner concrete compression strut, outer concrete compression strut, steel web panel shear mechanisms, and stirrup confinement mechanisms. The formula is verified by the experiment results.

Journal

Advances in Structural EngineeringSAGE

Published: Jan 1, 2018

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