Experimental tests were performed to study the seismic behavior and performance of modified steel chevron braced frame systems, which incorporate a vertical slotted connection (VSC) detail between the top of the braces and the floor beam above. The VSC detail is intended to prevent vertical load transfer to the beam and limit brace forces to the compressive resistance of the members. Full-scale quasi-static cyclic tests were performed on two specimens with hollow tube braces, with one specimen having the braces filled with concrete. Both frames exhibited stable, predictable behavior under cyclic loading. The VSC detail provided free vertical movement of the brace assembly during both tests. However, its flexibility created a moderate reduction in the overall lateral stiffness of the frame. The concrete-filled tube specimen sustained higher peak loads, demonstrated greater residual strength and dissipated more energy than the hollow tube specimen due to the partial inhibition of local buckling by the concrete core. It was found that the VSC chevron braced frame system is a suitable concept for use in buildings in high-risk seismic zones.
[1]
H Krawinkler.
SCALE EFFECTS IN STATIC AND DYNAMIC MODEL TESTING OF STRUCTURES
,
1988
.
[2]
Theodore V. Galambos,et al.
Guide to stability design criteria for metal structures
,
1998
.
[3]
Standard Test Methods for Tension Testing of Metallic Materials 1
,
2022
.
[4]
N. S. Trahair,et al.
Guide to stability design criteria for metal structures (4th edition): Theodore V. Galambos (ed) John Wiley and Sons, New York, 1988, £65.00 ISBN 0 471 09737 3
,
1989
.
[5]
Subhash C. Goel,et al.
Cyclic Load Behavior of Concrete‐Filled Tubular Braces
,
1988
.
[7]
Robert Tremblay,et al.
Seismic design of low- and medium-rise chevron braced steel frames
,
2000
.
[8]
Alexander Remennikov,et al.
Seismic Behavior and Deterministic Design Procedures for Steel V-Braced Frames
,
1998
.