Abstract:The American Institute of Steel Construction Proposed Load and Resistance Factor Design Specification recognizes the ability of connections that function as less than fully rigid to transmit limited moments and to provide some measure of end restraint to columns in its definition of partially restrained (PR) construction. An analytical procedure for determining the response up to collapse of subassemblages in which semirigid beam-to-column connections are present is derived. This employs a nonlinear finite ele… Show more
“…B-spline techniques were suggested by Jones et al (1981) as an alternative to polynomials as a means of avoiding possible negative slopes. Lui & Chen (1986) used an exponential representation that despite being complex could readily be incorporated in analytical computer programs (Nethercot et al, 1987). Although it is possible to closely fit virtually any shape of moment-rotation curve, purely empirical methods possess the disadvantage that they cannot be extended outside the range of the calibration data.…”
“…B-spline techniques were suggested by Jones et al (1981) as an alternative to polynomials as a means of avoiding possible negative slopes. Lui & Chen (1986) used an exponential representation that despite being complex could readily be incorporated in analytical computer programs (Nethercot et al, 1987). Although it is possible to closely fit virtually any shape of moment-rotation curve, purely empirical methods possess the disadvantage that they cannot be extended outside the range of the calibration data.…”
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