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结合板壳单元 ,在载荷随机的情况下 ,给出了利用随机有限元计算大型、复杂结构可靠度的方法 ,推导了相应的计算公式 ,计算了 QTJS1 60铁路救援起重机伸缩式吊臂的可靠度。结果表明此方法是结构可靠度分析的一种有效方法 ,可以推广应用于其它大型工程结构的可靠度分析。
Combined with the plate and shell unit, under the condition of random load, the method of calculating the reliability of large and complex structures by using the stochastic finite element method is deduced, and the corresponding calculation formula is deduced. The reliability of the telescopic boom of QTJS1 60 railway crane is calculated . The results show that this method is an effective method for structural reliability analysis and can be applied to the reliability analysis of other large-scale engineering structures.