[1]郑蕊,李兆霞.基于结构健康监测系统的桥梁疲劳寿命可靠性评估[J].东南大学学报(自然科学版),2001,31(6):71-73.[doi:10.3969/j.issn.1001-0505.2001.06.017]
　Zheng Rui,Li Zhaoxia.Reliable Evaluation of Bridge Fatigue Life Based on Structural Health Monitoring System[J].Journal of Southeast University (Natural Science Edition),2001,31(6):71-73.[doi:10.3969/j.issn.1001-0505.2001.06.017]
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基于结构健康监测系统的桥梁疲劳寿命可靠性评估()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
31
期数:
2001年第6期
页码:
71-73
栏目:
数学、物理学、力学
出版日期:
2001-11-20

文章信息/Info

Title:
Reliable Evaluation of Bridge Fatigue Life Based on Structural Health Monitoring System
作者:
郑蕊;  李兆霞
东南大学土木工程学院,南京 210096
Author(s):
Zheng Rui;  Li Zhaoxia
College of Civil Engineering, Southeast University, Nanjing 210096, China)
关键词:
结构健康监测系统;  疲劳寿命;  可靠性;  概率模型
Keywords:
structural health monitoring system;  fatigue life;  reliability;  probability mode
分类号:
O346.5
DOI:
10.3969/j.issn.1001-0505.2001.06.017
摘要:
为探讨如何利用结构健康监测系统所记录的应变-时程曲线进行桥梁结构疲劳寿命的可靠性评估.选取若干天的应变-时程曲线,通过统计分析得到其标准样本,认为该桥上所有的应变循环都是这个标准样本的重复; 利用雨流计数法,得到标准样本的应力幅谱.在对桥面结构细节的疲劳寿命进行可靠性评估时,利用BS5400关于桥梁构件细节的标准分类结果对已有的概率模型进行修正,得到适合于桥梁疲劳寿命可靠性评估的概率模型.
Abstract:
In order to use strain-time curve recorded by the structural health monitoring system to reliably evaluate the fatigue life of bridge structure. Strain-time curves of several days are selected, a representative block of cycles is obtained by statistical analysis, and it is believed all strain cycles in the bridge are repeats of the representative block of cycles. The stress spectrum of the representative block of cycles is obtained by rain-flow counting method. When the fatigue life of bridge-deck section details is reliably evaluated, a modified probability mode suitable for bridge fatigue evaluation is obtained through using the standard classification results about bridge component details from the British Standard BS5400.

参考文献/References:

[1] Li Z X,Chan T H T,Ko J M.Fatigue analysis and life prediction of bridges with structural health monitoring data—part I:methodology and strategy.Int J Fat,2001,23(1):45～53
[2] 吕澎民,严隽耄.焊接转向架结构可靠性疲劳寿命预估方法研究.兰州铁道学院学报,1995,14(3):80～86
[3] 赵永翔,张质文.以可靠度观点确定起重机金属结构许用应力.机械强度,1994,16(1):61～64

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备注/Memo

备注/Memo:
作者简介:郑蕊,女,1975年生,硕士研究生.
基金项目:国家自然科学基金资助项目(50178019).
更新日期/Last Update: 2001-11-20