Seismic Design of Steel Moment Frames: Connections and Panel Zones, Slides of Construction

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Typical Test Subassemblages Exterior Subassemblage Interior Subassemblage

Typical Exterior Subassemblage Δ L beam

Interstory Drift Angle  =

L

beam

H

column

Typical Interior Subassemblage

Interstory Drift Angle  =

Hcolumn

Typical Interior Subassemblage

Appendix S Testing Requirements - Loading History Apply the following loading history: 6 cycles at  =  0.00375 rad. 6 cycles at  =  0.005 rad. 6 cycles at  =  0.0075 rad. 4 cycles at  =  0.01 rad. 2 cycles at  =  0.015 rad. 2 cycles at  =  0.02 rad. 2 cycles at  =  0.03 rad. 2 cycles at  =  0.04 rad. continue at increments of 0.01 rad, with two cycles of loading at each step

**Appendix S Testing Requirements - Loading History -0. -0. -0. -0. -0. 0

0.** Interstory Drift Angle  Acceptance Criteria for SMF Beam-to-Column Connections: After completing at least one loading cycle at  0.04 radian, the measured flexural resistance of the connection, measured at the face of the column, must be at least 0.80 Mp of the connected beam

A Prequalified connection is one that has undergone sufficient testing (per Appendix S) analysis evaluation and review so that a high level of confidence exists that the connection can fulfill the performance requirements specified in Section 9.2a for Special Moment Frame Connections 9.2b Conformance Demonstration ........by use of Prequalified Connection

Requirements for Prequalification of Connections: Appendix P - Prequalification of Beam-to-Column and Link-to-Column Connections 9.2b Conformance Demonstration ..... by use of Prequalified Connection Authority to Prequalify of Connections: AISC Connection Prequalification Review Panel (CPRP) Information on Prequalified Connections: Standard ANSI/AISC 358 - " Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications "

ANSI/AISC 358 - " Prequalified Connections for Special and Intermediate Steel Moment Frames for Seismic Applications " Connections Prequalified in ANSI/AISC 358 (1st Ed - 2005)

• (^) Reduced Beam Section (RBS) Connection
• (^) Bolted Unstiffened and Stiffened Extended End- Plate Connection

RBS Concept:

• Trim Beam Flanges Near

Connection

• Reduce Moment at

Connection

• Force Plastic Hinge Away

from Connection

Reduced Beam Section (RBS) Moment Connection

Whitewashed connection prior to testing:

Whitewashed connection prior to testing:

Connection at   0.02 radian......

Connection at   0.03 radian......