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| 在役钢桁架简支梁桥的剩余疲劳寿命估算 | |
| 引用本文： | 杜永峰,林梅,刘锡. 在役钢桁架简支梁桥的剩余疲劳寿命估算[J]. 甘肃科学学报, 2011, 23(3): 61-64 |
| 作者姓名： | 杜永峰 林梅 刘锡 |
| 作者单位： | 1. 兰州理工大学西部土木工程防灾减灾教育部工程研究中心,甘肃兰州 730050;兰州理工大学西部土木工程防震减灾研究所,甘肃兰州 730050 2. 兰州理工大学西部土木工程防震减灾研究所,甘肃兰州,730050 3. 兰州军区68011部队,甘肃兰州,730020 |
| 基金项目： | 甘肃省科技支撑项目(0708GKCA002); 甘肃省建设科技攻关项目(JK2010-15) |
| 摘 要： | 以兰州市刘沙公路某钢桁架简支梁桥为例,建立3-D有限元仿真模型,进行了实测与理论模拟对比分析,通过计算得到控制桥梁疲劳的关键杆件,并运用既有钢桥的疲劳寿命模型确定其疲劳寿命.工程实践表明,精确模拟桥梁的工作状态及关键杆件的疲劳寿命对研究钢桥的疲劳十分重要. |
| 关 键 词： | 钢桁架 3-D有限元模型 应力谱 疲劳剩余寿命 |
Estimation of the Remaining Fatigue Life of Simply Supported Steel Truss Bridges at Work |
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| DU Yong-feng,LIN Mei,LIU Xi. Estimation of the Remaining Fatigue Life of Simply Supported Steel Truss Bridges at Work[J]. Journal of Gansu Sciences, 2011, 23(3): 61-64 | |
| Authors: | DU Yong-feng LIN Mei LIU Xi |
| Affiliation: | DU Yong-feng1a,1b,LIN Mei1b,LIU Xi2(1.Western Center of Disaster Mitigation in Civil Engineering of Ministry of Educationa,Institute of Earthquake Protection and Disaster Mitigationb,Lanzhou University of Science and Technology,Lanzhou 730050,China,2.Army 68011 of Lanzhou Military Area Command,730020,China) |
| Abstract: | Taking one of the steel simply supported truss bridges of Lanzhou for example,the 3-D finite element models(3-D FEM) which can reflect the actual mechanic behavior of the existing steel bridge is first established.Then the measured data and simulation are analyzed for comparison.The critical rod pieces which control the fatigue life of the whole bridge are very important.Then the fatigue life of the working steel bridge is estimated.Cases show how important the model is for the actual mechanic behaviors of ... |
| Keywords: | steel truss 3-D finite element model stress spectrum remaining fatigue life |
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