起重机臂架结构的凸模型非概率可靠性分析  

Convex model-based non-probabilistic reliability analysis of crane structure

作　　者：杨淑伟 杨瑞刚[1] 路艺 YANG Shuwei YANG Ruigang LU Yi(School of Machinery Engineering, Taiyuan University of Science ＆ Technology, Taiyuan Shanxi 030024, Chin)

机构地区：[1]太原科技大学机械工程学院,山西太原030024

出　　处：《中国安全科学学报》2017年第8期68-72,共5页China Safety Science Journal

基　　金：国家高技术研究发展"863"计划(2013AA040203);国家"十二五"科技支撑计划(2011BAK06B05);山西省回国留学人员科研项目(2015-088);山西省留学回国人员科技活动项目择优项目([2016]97)

摘　　要：为预防大型工程中起重机安全事故,通过建立模型来衡量起重机臂架结构非概率可靠性。首先利用凸模型非概率可靠性相关理论,构建有代表性的凸模型——广义无穷范数模型,并用该模型来定义非概率可靠性指标;其次分析影响臂架结构非概率可靠性的不确定性参数;最后在凸模型的基础上,将非概率功能函数代入非概率可靠性指标中,求出臂架结构非概率可靠性。以某企业履带式起重机臂架结构为例予以分析,验证模型的有效性。研究表明:利用该模型分析臂架结构强度、刚度、稳定性等3方面,其结果与实际情况相符。For the sake of avoiding crane safety accidents in large-scale projects,a model was built to measure the non-probabilistic reliability of crane boom structures.By using the non-probabilistic reliability theory of convex model,a representative convex model is constructed and the model was called generalized infinite norm model at first.The model was used to define the non-probabilistic reliability indicators.Then,the uncertainty parameters affecting the non-probabilistic reliability of the boom structure was analyzed.Lastly,based on the convex model,the non-probabilistic function was brought into the nonprobabilistic reliability index so that the non-probabilistic reliability of the boom structure can be obtained.The model was used to analyze the boom structure of a certain crawler crane in some enterprise.The results show that evaluation of the non-probabilistic reliability of the boom structure by using the model conforms with the reality.

关 键 词：凸模型 起重机臂架 非概率 可靠性 失效功能函数 可靠性指标 

分 类 号：X913.4[环境科学与工程—安全科学]