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Performance of circular opening in beam web connections

Momenzadeh, S. B ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. Fragile behavior in the area around the connections which is tangent on beam to column and also incidence of brittle cracks and failures in this area, in the event of severe ground shaking, are the main problems and disadvantages that have negative effect on the performance of steel bending frames and would have restrictions effect on the of the frame's plasticity behavior. To solve the problem of bending the frame, two methods have been proposed. In the first method, the connection will be strengthened so that has enough resistance and sufficient strength to prevent cracks and failures to non-elastic deformation of the frame in the inner part of beams be answered. In the second method, instead of strengthen the connection area; the middle part of beam in a certain distance from the terminal connection would weaken intently. So, this weakened section act as a fuse and cause attracting and transmitting place of occurrence of the most transmission of frame shape request to a new far area and also would prevent cracking of the connection and its associated elements. In this paper, we investigated the transformations of frames against lateral force by weakening of the circular hole in a far away area
  4. Keywords:
  5. Circular opening ; Perforated beams ; Plastic hinge ; Post northridge connections ; Reduced web section
  6. Source: Life Science Journal ; Volume 9, Issue 3 , 2012 , Pages 1377-1383 ; 10978135 (ISSN)
  7. URL: http://www.lifesciencesite.com/lsj/life0903/200_10290life0903_1377_1383.pdf