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Steel and Composite Structures
  Volume 13, Number 1, July 2012, pages 35-46

The beneficial effects of beam web opening in seismic behavior of steel moment frames
Saeed Erfani*, Ata Babazadeh Naseri, and Vahid Akrami

    Implementation of openings in beams web has been introduced as an innovative method for improving seismic performance of steel moment frames. In this paper, several steel moment frames have been studied in order to evaluate the effect of openings in beams web. The beam sections with web opening have been modeled as a simplified super-element to be used in designing frames and to determine opening configurations. Finite element models of designed frames were generated and nonlinear static pushover analysis was conducted. The efficient location for openings along the beam length was discovered and the effects of beams with web openings on local and global behavioral characteristics of frames were discussed. Base on the results, seismic performance of steel moment frames was improved by creating openings in beams web, in terms of reduction in stress level of frame sensitive areas such as beam to column connections and panel zones.
Key Words
    beam web opening, steel moment frame, pushover analysis, finite element method, panel zone
Civil Engineering Department, Amirkabir University of Technology, Tehran, Iran

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