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Showing 1 to 10 of 10 for “"Special Moment Frames"”.
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Performance Prediction and Evaluation of Steel Special Moment Frames for Seismic Loads
… panel zone deformation and interior gravity frames. The 1973 UBC, 1985 UBC and 1994 UBC provisions were selected for the pre-Northridge 3-, 9- and 20-story buildings in Los Angeles and Seattle and designed for wind and seismic loads. A total of 15 pre-Northridge buildings, which are …
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Experimental Design and Preliminary Testing for Skewed Special Moment Frame Prequalification
<p>Special moment frames having specially detailed connections are common in high seismic regions, providing architectural flexibility for passageways and views without brace obstructions. In situations where the building framing layout requires deviation from typical rectangular framing, skew in …
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Response of Cyclically Loaded Extended End-Plate Moment Connections When Used With Welded Built-Up Sections
… to study the behavior of extended end-plate moment connections subjected to cyclic loading. Eleven specimens were tested, representing typical connection configurations used in the metal building manufacturing industry. Four of the beams were shallow (30 in. or less), and seven were deep (60 …
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Analytical Development of A Plastic Hinge Detail for Steel SMFs
A modular plastic hinge seismic special detail has been developed for use in steel special moment frames (SMFs). The aim of the special detail design is to dissipate seismic energy through stable yielding of a beam "link" in plastic hinge region. Reliable and repeatable energy dissipation at high …
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Performance-Based Analysis of a Reinforced Concrete Shear Wall Building
… Richard Hagen</p> <p>In this thesis, a special reinforced concrete shear wall building was designed per ASCE 7-05, and then the performance was investigated using the four analysis procedures outlined in ASCE 41-06. The proposed building was planned as a 6-story office building in San …
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Development and Validation of a Twelve Bolt Extended Stiffened End-Plate Moment Connection
Three end-plate moment connection configurations are prequalified for special moment frames for seismic applications in AISC 358-10. The eight bolt extended stiffened connection is the strongest of the three configurations, but it can only develop approximately 30 percent of currently available …
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On the Seismic Performance of Skewed Special Moment Frame Reduced Beam Section Connections
<p>Special Moment Frames (SMFs) are frequently used in high seismic areas for architecturally constrained designs, as they provide lateral system stiffness without the use of braces which often obstruct views and architectural features. Reduced beam section (RBS) connections are popular SMF …
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Evaluating the Fracture Potential of Steel Moment Connections with Defects and Repairs
Steel moment frames are a popular seismic-force resisting system, but it is believed that they are susceptible to early fracture if there is a stress concentration in the plastic hinge region, also known as the protected zone. If a defect is present in this area, it may be repaired by grinding …
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Influence of the Gravity System on the Seismic Performance of Special Steel Moment Frames
… resisting system on the collapse performance of Special Steel Moment Frames (SMFs). The influence was quantified using the FEMA P-695 methodology. The buildings used for this study were a 2-, 4- and 8-story SMFs taken from the ATC76-1 project where their collapse performance was already evaluated …
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ANCHORAGE OF HEADED REINFORCING BARS IN CONCRETE
… 3db between headed bars permitted in joints in special moment frames in accordance with Section 18.8.5.2 of ACI 318-14 to be reduced to 1db, allowing for the use of more closely spaced headed bars. The anchorage strength of the headed bars calculated using anchorage provisions of Chapter 17 of …