Safety
Analysis of Steel Building Frames under dynamic wind
loading
Summary:
Absolute safety of a structure cannot be achieved
because of uncertainties in loading and resistance. Conventional
safety factors only qualitatively account for
these uncertainties. Thus, the actual risk of failure
of a structure designed in accordance with building code
provisions remains unknown. Conversely, the probability
of attaining a suitably specified limit state is recognized
as a quantitative measure of safety. Since such information
is needed in determining acceptable risk levels and in
decision-making for structural improvements, a method
for the evaluation of risk of failure is needed. Traditionally,
wind-excited structures have been designed based on equivalent
static forces in place of actual dynamic loads.
For flexible buildings this may not always provide a reasonable
approximation in the response analysis. The objective
of this study is to evaluate the lifetime risk of failure
of steel building frames subjected to dynamic wind loading.
Risk is evaluated in terms of probability of excessive
interfloor deflection.
Format:
Pages : 188
Size: 5.3 mb
Author : NIRMAL K. DAS, B.C.E., M.S. in C.E.
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