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国家自然科学基金(50808041): 作品数：20被引量：222H指数：9; 导出分析报告; 相关作者：丁幼亮李爱群邓扬孙君操礼林更多>>; 相关机构：东南大学江苏大学江苏省苏通大桥建设指挥部更多>>; 相关期刊：《振动与冲击》《Science China(Technological Sciences)》《东南大学学报（自然科学版）》《振动．测试与诊断》更多>>; 相关主题：悬索桥结构损伤预警小波包能量谱小波包分析SUSPENSION_BRIDGE更多>>; 相关领域：建筑科学交通运输工程理学电子电信更多>>

声发射和小波包分析在损伤状态监测中的应用被引量：13: 《振动．测试与诊断》2012年第4期591-595,688-689,共5页操礼林李爱群邓扬丁幼亮; 国家杰出青年基金资助项目(编号:50725828);国家自然科学基金资助项目(编号:50808041); 为应用声发射技术对结构的损伤状态进行监测与识别,基于小波包分析提出了一种在线损伤监测方法。采用D-S证据理论对声发射信号的小波包能量谱进行多源信息融合得到改进的小波包能量谱,计算Mahalanobis距离构建结构损伤状态判别指标,采用...; 关键词：损伤状态监测声发射小波包分析小波包能量谱信息融合

一种基于经验模式分解的结构损伤预警方法被引量：1: 《振动．测试与诊断》2012年第3期392-396,513,共5页操礼林李爱群邓扬丁幼亮; 国家杰出青年基金资助项目(编号:50725828);国家自然科学基金资助项目(编号:50808041); 提出了一种基于经验模式分解的结构损伤预警方法。首先,将结构反应信号用经验模式分解方法分解成一系列固有模态函数;然后,利用固有模态函数在结构损伤前后的能量分布变化来表征结构因损伤引起的动力特性改变;最后,计算结构的损伤预警...; 关键词：经验模式分解固有模态函数损伤预警 Benchmark结构

Fatigue reliability assessment for bridge welded details using long-term monitoring data被引量：24: 《Science China(Technological Sciences)》2011年第12期3371-3381,共11页DENG Yang DING YouLiang LI AiQun ZHOU GuangDong; supported by the National Natural Science Foundation of China (Grant Nos.50725828,50808041);Scientific Research Foundation of Graduate School of Southeast University (Grant No. YBJJ0923);Teaching and Research Foundation for Excellent Young Teacher of Southeast University; A reliability assessment method of fatigue life based on the long-term monitoring data is developed for welded details in steel box girder,and the application research is presented with examples of welded rib-to-deck ...; 关键词：steel box girder fatigue loading effects equivalent stress range stress cycle number fatigue reliability traffic growth

Prediction of extreme wind velocity at the site of the Runyang Suspension Bridge被引量：6: 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2011年第8期605-615,共11页Yang DENG You-liang DING Ai-qun LI Guang-dong ZHOU; Project supported by the National Natural Science Foundation of China (Nos. 50725828 and 50808041);Scientific Research Foundation of Graduate School of Southeast University (No. YBJJ0923);the Teaching and Research Foundation for Excellent Young Teacher of Southeast University,China; This paper presents a distribution free method for predicting the extreme wind velocity from wind monitoring data at the site of the Runyang Suspension Bridge (RSB), China using the maximum entropy theory. The maximum...; 关键词：Extreme wind velocity Maximum entropy theory Probability density function Structural health monitoring(SHM)

Assessment of bridge expansion joints using long-term displacement measurement under changing environmental conditions被引量：9: 《Frontiers of Structural and Civil Engineering》2011年第3期374-380,共7页Youliang DING Aiqun LI; the support of the National Natural Science Foundation of China(Grant Nos.50725828,50808041 and 50978056);the Ph.D.Program Foundation of the Ministry of Education of China(Grant No.200802861011);the Teaching and Research Foundation for Excellent Young Teachers of Southeast University.; This paper addresses the problem of condition assessment of bridge expansion joints using long-term measurement data under changing environmental conditions.The effects of temperature,traffic loading and wind on the e...; 关键词：structural health monitoring DISPLACEMENT expansion joint temperature effect wind effect traffic loading statistical process control suspension bridge

环境条件影响下悬索桥模态频率变异性的定量评价被引量：12: 《振动与冲击》2011年第8期230-236,共7页邓扬丁幼亮李爱群; 国家杰出青年基金资助项目(50725828);国家自然科学基金资助项目(50808041);教育部博士点基金(新教师基金)项目(200802861011);江苏省自然科学基金资助项目(BK2008312);东南大学优秀博士学位论文基金(YBJJ0923); 基于长期监测数据,研究了由环境温度、风、交通荷载和识别算法所引起的悬索桥模态频率识别的变异性。首先,采用多样本平均方法建立了温度-频率的季节相关性,减小了频率由识别算法导致的随机误差。其次,将模态频率归一化至某一参考温度...; 关键词：结构健康监测模态频率环境影响变异性悬索桥

Damage warning of suspension bridges based on neural networks under changing temperature conditions被引量：2: 《Journal of Southeast University(English Edition)》2010年第4期586-590,共5页丁幼亮李爱群耿方方; The National Natural Science Foundation of China(No.50725828,50808041);the Natural Science Foundation of Jiangsu Province(No.BK2008312);the Ph.D.Programs Foundation of Ministry of Education of China(No.200802861011); This paper aims at successive structural damage detection of long-span bridges under changing temperature conditions.First,the frequency-temperature correlation models of bridges are formulated by means of artificial ...; 关键词：structural damage detection modal frequency temperature neural network suspension bridge

Study on correlations of modal frequencies and environmental factors for a suspension bridge based on improved neural networks被引量：9: 《Science China(Technological Sciences)》2010年第9期2501-2509,共9页DING YouLiang,DENG Yang & LI AiQun Key Laboratory of Concrete and Prestressed Concrete Structure of Ministry of Education,Southeast University,Nanjing 210096,China; supported by the National Natural Science Foundation of China (Grant Nos. 50725828, 50808041);Ph.D. Programs Foundation of Ministry of Education of China (Grant No. 200802861011);Scientific Research Foundation of Graduate School of Southeast University (Grant No. YBJJ0923); By using of long-term monitoring data of Runyang Suspension Bridge,the improved back-propagation neural networks (BPNNs) are formulated for modeling the correlations between modal frequencies and environmental conditi...; 关键词：MODAL frequency environmental condition correlation artificial neural networks HYPOTHESIS test SUSPENSION bridge

小波包分析和信息融合在结构损伤预警中的联合应用被引量：4: 《工程力学》2010年第8期72-76,共5页丁幼亮李爱群邓扬; 国家杰出青年基金项目(50725828);国家自然科学基金项目(50808041);教育部博士点基金新教师项目(200802861011); 为提高环境激励下结构损伤预警的准确性,将信息融合技术引入到基于小波包分析的结构损伤预警方法中。采用D-S证据理论对环境激励下识别的小波包能量谱进行多源信息融合得到改进的小波包能量谱,并进而计算结构的损伤预警指标。ASCE Bench...; 关键词：结构损伤预警小波包分析小波包能量谱信息融合结构健康监测

苏通大桥结构健康状态评估技术研究与应用(2):主梁损伤预警被引量：3: 《防灾减灾工程学报》2010年第3期330-335,共6页李爱群丁幼亮邓扬姚蓓杨军周建华; 国家杰出青年科学基金项目(50725828);国家"十一五"科技支撑计划项目(2006BAJ03B05);国家自然科学基金项目(50808041)资助; 为了建立"环境因素归一化"的苏通大桥主梁损伤预警方法,本文对苏通大桥主梁240天的小波包能量谱与温度实测数据进行了季节相关性研究。分析结果表明,苏通大桥主梁的小波包能量谱与温度具有明显的季节相关性,其特征频带能量比的日平均值...; 关键词：结构损伤预警小波包能量谱季节相关性斜拉桥主梁

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