Statistical Significance of Less Common Load Combinations

摘要: The purpose of this work is to provide a simple, rational basis for combining bridge loads in the extreme event limit state. Classic methods are used evaluate probabilities traffic, seismic, and storm-related occurring simultaneously various intensities. modeled using Poisson distribution, which circumvents problems encountered when normal- or log-normal distributions. hazard level evaluated directly negative exponential function time domain. An acceptable combined events subjectively based on that deemed strength state individually, as well fiscal prudence. It shown (1) application seismic structure already subjected effects degradation, local pier scour, contraction waterway not justifiable; (2) live reduced from anticipated 75-year maximum 2-week appropriate designing its 100-year “scoured-out” storm configuration; (3) vehicular likely be during event, but other issues need considered.