Influence of Semi-Rigid joints and Roof Slopes on the Cyclic Behavior of Gabled Frame
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Keywords:
Steel Structures, Semi-Rigid Joints, Numerical Analysis, Cyclic Response, Gable FrameAbstract
This study investigates the impact of semi-rigid joint behavior on the cyclic response of gabled
structures with different roof slopes. A numerical analysis is conducted on gable frames featuring both rigid
and semi-rigid column-beam joints. The cyclic behavior is examined using the ANSYS V14.5 software,
with the Monforton and Wu model employed to simulate the linear response of semi-rigid joints. The
primary objective of this research is to evaluate how joint flexibility influences the overall structural
performance, particularly in terms of ductility, stiffness degradation, and energy dissipation under cyclic
loading. The results indicate that gabled structures with high-pitched roofs and rigid joints exhibit
significant flexibility and improved energy dissipation compared to similar structures with lower slopes.
However, introducing semi-rigid joints further enhances the ductility of the structure, allowing for better
absorption and dissipation of cyclic forces due to their increased rotational capacity. Moreover, the findings
reveal that semi-rigid joints contribute substantially to the overall deformation capacity of gable frames,
especially in low-slope configurations. In such cases, the structural response demonstrates pronounced
ductility, making semi-rigid joints a good option for improving seismic resilience. Conversely, in steep
slope gables, the influence of semi-rigid joints on overall behavior is less significant. These insights
contribute to optimizing structural design by adjusting joint stiffness to specific slope conditions.
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