考虑区间不确定性的钢结构疲劳寿命分析

doi:10.13229/j.cnki.jdxbgxb201603019

吉林大学学报(工学版) ›› 2016, Vol. 46 ›› Issue (3): 804-810.doi: 10.13229/j.cnki.jdxbgxb201603019

考虑区间不确定性的钢结构疲劳寿命分析

曹珊珊, 雷俊卿

北京交通大学土木建筑工程学院,北京 100044

收稿日期:2015-06-19 出版日期:2016-06-20 发布日期:2016-06-20
通讯作者: 雷俊卿(1956-),女,教授,博士生导师.研究方向:大跨度桥梁结构理论与应用.E-mail:lei_jq@126.com
作者简介:曹珊珊(1989),女,博士研究生.研究方向:大跨度桥梁结构理论与应用,桥梁钢结构疲劳性能.E-mail:oconan@163.com
基金资助:
北京交通大学研究生创新基金项目(2014YJS097/C14JB00340); 国家自然科学基金项目(51178042,51578047); 中国铁路总公司科技研究开发计划项目(2014G004-B); 中国交通建设股份有限公司科技特大研发项目(2014-ZJKJ-03).

Fatigue life prediction of steel structure considering interval uncertainty

CAO Shan-shan, LEI Jun-qing

School of Civil Engineering,Beijing Jiaotong University,Beijing 100044, China

Received:2015-06-19 Online:2016-06-20 Published:2016-06-20

摘要/Abstract

摘要： 针对传统的钢结构疲劳寿命预测误差较大的问题,判别线性累积损伤模型和裂纹扩展模型中变量不确定性和随机性,基于区间-概率理论推导区间模型和含有对数正态分布的概率模型的一致性关系,给出可同时考虑区间变量和随机变量的区间-概率可靠度分析模型和求解方法。实桥中典型疲劳细节验证表明,在模型中变量应力幅的变异系数为0.25~0.35时,本文方法比传统概率算法更为保守,可作为预测钢结构疲劳寿命的一种有效手段。

关键词: 桥梁工程, 统计力学, Miner准则, 裂纹扩展准则, 区间-概率可靠度模型, 疲劳寿命

Abstract: To reduce the fatigue life prediction error of steel structure using traditional fatigue prediction algorithm, the interval-probability reliability analysis method was presented to deal the fatigue life prediction of steel structure with the consideration of variables uncertainty. The parameters of the linear accumulative damage model and the crack propagation model were distinguished as probabilistic variables and interval variables based on previous studies. The theoretical foundation was established by the consistency relationship between the interval reliability and the probability reliability model with lognormal distributed variables in theory. The solving process was combined with definition of interval reliability index and the probabilistic algorithm. The results of typical fatigue details of actual bridge show that, when the variable coefficient of the stress amplitude is in the range from 0.25 to 0.35, the results of the interval-probability analysis are more conservative than that of traditional probability method.

Key words: bridge engineering, statistical mechanics, Miner's rule, crack propagation criterions, hybrid reliability model, fatigue life

中图分类号:

U441

曹珊珊, 雷俊卿. 考虑区间不确定性的钢结构疲劳寿命分析[J]. 吉林大学学报(工学版), 2016, 46(3): 804-810.

CAO Shan-shan, LEI Jun-qing. Fatigue life prediction of steel structure considering interval uncertainty[J]. 吉林大学学报(工学版), 2016, 46(3): 804-810.

参考文献

[1] 郭书祥,吕震宙,冯元生. 基于区间分析的结构非概率可靠性模型[J]. 计算力学学报,2001,18(1):56-60.
Guo Shu-xiang, Lü Zhen-zhou,Feng Yuan-sheng. The structure of probabilistic reliability model based on interval analysis[J]. Chinese Journal of Computational Mechanics,2001,18(1):56-60.
[2] 郭书祥,吕震宙. 结构可靠性分析的概率和非概率混合模型[J]. 机械强度,2002,24(4):524-526,530.
Guo Shu-xiang, Lü Zhen-zhou. Hybrid probabilistic and non-probabilistic model of structural reliability[J]. Journal of Mechanical Strength,2002,24(4):524-526,530.
[3] 王军,邱志平. 结构的概率-非概率混合可靠性模型[J]. 航空学报,2009,30(8):1398-1404.
Wang Jun,Qiu Zhi-ping.Probabilistic and non -probabilistic hybrid reliability model of structures[J]. Acta Aeronautica et Astronautica Sinica,2009,30(8):1398-1404.
[4] AASHTO Guidelines. AASHTO standard specification 6th edtion for highway bridges[S]. Washington:American Association of State Highway and Transportation Officials,2012.
[5] Wirsching P H. Fatigue reliability for offshore structures[J]. Journal of Structural Engineering,1984,110(10):2340-2356.
[6] Frangopol D M, Strauss A, Kim S. Bridge reliability assessment based on monitoring[J]. Journal of Bridge Engineering, 2008,13(3):258-270.
[7] Fisher J W. Fatigue and Fracture in Steel Bridges[M]. New York:John Willey and Sons, 1984.
[8] Wirsching P H, Ortiz K, Chen Y N. Fracture mechanics fatigue model in a reliability format[C]∥6th Int Syrup on OMAE, Houston, TX, 1987:331-337.
[9] 刘克格, 闫楚良. 结构疲劳试验寿命数据分布类型对其使用寿命的影响[J]. 吉林大学学报:工学版,2011,41(2):419-423.
Liu Ke-ge, Yan Chu-liang. Probability distribution of fatigue test data and fatigue life of aircraft structure[J]. Journal of Jilin University (Engineering and Technology Edition),2011,41(2):419-423.
[10] 肖斌贝,雷俊卿,张坤,等.多级变幅度劳荷载下预应力混凝土梁刚度退化[J].吉林大学学报:工学版,2013,43(3):665-670.
Xiao Yun,Lei Jun-qing,Zhang Kun,et al. Fatigue stiffness degradation of prestressed concrete beam under multilevel amplitude cycle loading[J]. Journal of Jilin University(Engineering and Technology Edition),2013,43(3):665-670.
[11] Kwon K, Frangopol D M. Bridge fatigue reliability assessment using probability density functions of equivalent stress range based on field monitoring data[J]. International Journal of Fatigue,2010,32(8):1221-1232.
[12] Chung H Y. Fatigue reliability and optimal inspection strategies for steel bridges[D]. Austin:Cockrell School of Engineering, The University of Texas at Austin,2004.
[13] Aker Offshore Partner A S. Review of probabilistic inspection analysis methods[DB/OL]. [2015-05-26].http://www.docin.com/p-368376916.html.
[14] 江涛,陈建军,张弛江. 区间模型非概率可靠性指标的仿射算法[J]. 机械强度,2007,29(2):251-255.
Jiang Tao, Chen Jian-jun, Zhang Chi-jiang. Non-probabilistic reliability index and affine arithmetic[J]. Journal of Mechanical Strength,2007,29(2):251-255.
[15] Kwon K, Frangopol D M. Bridge fatigue assessment and management using reliability-based crack growth and probability of detection models[J]. Probabilistic Engineering Mechanics,2011,26(3):471-480.
[16] Kwon K, Frangopol D M, Soliman M. Probabilistic fatigue life estimation of steel bridges by using a bilinear approach[J]. Journal of Bridge Engineering,2012,17(1):58-70.

相关文章 15

[1]	惠迎新,毛明杰,刘海峰,张尚荣. 跨断层桥梁结构地震响应影响[J]. 吉林大学学报(工学版), 2018, 48(6): 1725-1734.
[2]	毛宇泽, 王黎钦. 鼠笼支撑一体化结构对薄壁球轴承承载性能的影响[J]. 吉林大学学报(工学版), 2018, 48(5): 1508-1514.
[3]	郑一峰, 赵群, 暴伟, 李壮, 于笑非. 大跨径刚构连续梁桥悬臂施工阶段抗风性能[J]. 吉林大学学报(工学版), 2018, 48(2): 466-472.
[4]	魏志刚, 刘寒冰, 时成林, 宫亚峰. 考虑桥面铺装作用的简支梁桥横向分布系数计算[J]. 吉林大学学报(工学版), 2018, 48(1): 105-112.
[5]	宫亚峰, 何钰龙, 谭国金, 申杨凡. 三跨独柱连续曲线梁桥抗倾覆稳定性分析[J]. 吉林大学学报(工学版), 2018, 48(1): 133-140.
[6]	魏志刚, 时成林, 刘寒冰, 张云龙. 车辆作用下钢-混凝土组合简支梁动力特性[J]. 吉林大学学报(工学版), 2017, 47(6): 1744-1752.
[7]	王春生, 邹丽, 杨鑫华. 基于邻域粗糙集的铝合金焊接接头疲劳寿命影响因素分析[J]. 吉林大学学报(工学版), 2017, 47(6): 1848-1853.
[8]	张云龙, 刘占莹, 吴春利, 王静. 钢-混凝土组合梁静动力响应[J]. 吉林大学学报(工学版), 2017, 47(3): 789-795.
[9]	王国林, 孙砚田, 梁晨, 杨建, 周海超. 应用满应力理论的轮胎轮廓设计[J]. 吉林大学学报(工学版), 2017, 47(2): 365-372.
[10]	刘寒冰, 时成林, 谭国金. 考虑剪切滑移效应的叠合梁有限元解[J]. 吉林大学学报(工学版), 2016, 46(3): 792-797.
[11]	谭国金, 刘子煜, 魏海斌, 王龙林. 偏心直线预应力筋简支梁自振频率计算方法[J]. 吉林大学学报(工学版), 2016, 46(3): 798-803.
[12]	蒋荣超, 王登峰, 秦民, 蒋永峰. 基于疲劳寿命的轿车后悬架扭转梁轻量化设计[J]. 吉林大学学报(工学版), 2016, 46(1): 35-42.
[13]	邢保英, 何晓聪, 王玉奇, 邓成江. 多铆钉自冲铆接头力学性能机理[J]. 吉林大学学报(工学版), 2015, 45(5): 1488-1494.
[14]	邓成江，何晓聪，邢保英，王玉奇，曾凯，丁燕芳. 铝与铜异质板材自冲铆搭接接头的力学性能[J]. 吉林大学学报(工学版), 2015, 45(2): 473-480.
[15]	闫楚良, 郝云霄, 刘克格. 基于遗传算法优化的BP神经网络的材料疲劳寿命预测[J]. 吉林大学学报(工学版), 2014, 44(6): 1710-1715.

Metrics

Viewed

Full text

Abstract

Cited

Shared

Discussed

考虑区间不确定性的钢结构疲劳寿命分析

Fatigue life prediction of steel structure considering interval uncertainty

RICH HTML

PDF (PC)

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

Metrics

本文评价

推荐阅读 10