桥式起重机钢结构可靠性分析

Reliability analysis of steel structure of OTC

桥式起重机钢结构从定值许用应力法发展到概率可靠性设计法是设计理论的重大发展。本文论述了国内外采用这种设计理论的概况,初步介绍了桥式焊接钢结构的起重机载荷效应和结构抗力的随机分布规律和参数。评述了表征结构可靠度的标准,推荐了允许的可靠指标及实用设计表达式。

The development of OTC steel structure design from definite allowable stress method into probability-reliability method is considered as a significant step forward in design theory. This paper introduces the application of probability-reliability design theoly in our eountry as well as abroad, briefly presents stochastic distribution function and its parameters for load effect and structure resistance in case of welded crane structure, evaluates standards concerning structure reliability and recommends allowable value and applicable formulas for structure reliability.