基于Kriging代理模型的桥式起重机结构可靠性计算方法  

Structural Reliability Calculation Method of Bridge Crane Based on Kriging Agent Model

作　　者：赵世军 张志成 ZHAO Shi-jun;ZHANG Zhi-cheng(Shanxi Provincial Inspection and Testing Center,Taiyuan 030012,Shanxi)

机构地区：[1]山西省检验检测中心,山西太原030012

出　　处：《科技创新与生产力》2022年第11期115-116,122,共3页Sci-tech Innovation and Productivity

摘　　要：针对实际工程结构具有隐式的极限状态函数和极小失效概率导致的传统结构可靠性方法调用计算量大的问题,提出了一种基于Kriging代理模型的结构可靠性分析方法。该方法采用Kriging函数代替结构的极限状态函数,以减少实际结构极限状态函数的计算次数。Kriging函数是一种精确的插值技术,广泛应用于计算机仿真领域,其算法具有更好的预测能力。工程实例表明,该方法适用于小失效概率和隐式极限状态函数问题,应用于桥式起重机结构可靠性计算时,具有较高的精度和效率。To solve the problem that the traditional structural reliability method calls a large amount of computation due to the implicit limit state function and minimal failure probability of actual engineering structures, a structural reliability analysis method based on Kriging agent model is proposed. In this method, Kriging function is used to replace the limit state function of the structure to reduce the calculation times of the limit state function of the actual structure. Kriging function is an accurate interpolation technique, which is widely used in the field of computer simulation. Its algorithm has better prediction ability. The engineering example shows that the method is suitable for small failure probability and implicit limit state function problems, and has high accuracy and efficiency when applied to the reliability calculation of bridge crane structures.

关 键 词：桥式起重机 极限状态函数 结构可靠性 Kriging代理模型 

分 类 号：TH215[机械工程—机械制造及自动化] TH122[自动化与计算机技术—控制理论与控制工程] TP18[自动化与计算机技术—控制科学与工程]