An in-depth structural engineering and structural reliability analysis of concrete masonry beams was conducted. Investigators studied the ductile response of masonry beams in detail. A limit-state design methodology for reinforced-concrete masonry beams is presented based on the principles of structural reliability. The authors developed capacity-reduction values that explicitly account for the design safety of the limit states. Reinforcing bars are distributed uniformly throughout the beam section. Three different ductility definitions are derived and presented. A structural reliability analysis method to establish limitations on the quantity of steel in masonry beams is formulated. Equations are derived for the expected capacity at yield and ultimate limit states. An important part of this study was to quantify the uncertainty in the design capacity of concrete masonry beams of different limit states resulting from the variation of design variables. To incorporate the uncertainties in material properties, structural engineering equations, and construction quality control, a Monte Carlo analysis was performed.


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  • Accession Number: 00712784
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 28 1995 12:00AM