Novel Steel Frame Connections With Damping Capability

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Novel Steel Frame Connections With Damping
Capability
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Connections

• Connection types.
• Partially restrained connections (PRC).
• Behavior
• ?Moment-rotation curve
• ? static loads
• ? cyclic loads

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M-? curve under static loading
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Moment-Rotation Hysteresis Behavior Under Cyclic
Loads
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Shortcomings of PRC

• Low initial rotational stiffness.
• Prying action.
• ?Pinching of the
• M-? curves.

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Moment-Rotation Hysteresis With Pinching
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Motivation behind the research
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Goals

• To reduce the pinching in M-? hysteresis loops.
• To increase the ductility of the connection.
• To decrease the increased bolt forces due to
  prying.

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Approach

• Use elastomeric pads at the connection.
• Conduct four full scale connection tests with
  rubber pads.
• Compare the hysteresis loops obtained with and
  without rubber pads.

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Thank you !