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| 高铁用HRBF500钢筋混凝土梁疲劳寿命预测分析 | |
| 引用本文： | 王新玲,高会宗,李可.高铁用HRBF500钢筋混凝土梁疲劳寿命预测分析[J].郑州大学学报(工学版),2012,33(1):1-5. |
| 作者姓名： | 王新玲 高会宗 李可 |
| 作者单位： | 1. 郑州大学土木工程学院,河南郑州,450001 2. 中广国际建筑设计研究院,北京,100045 3. 东南大学土木工程学院,江苏南京,210096 |
| 基金项目： | 国家“863”支撑计划资助项目(2008AA030704) |
| 摘 要： | HRBF500钢筋是我国冶金行业新研发的超细晶粒高强钢筋,若用于高铁中的钢筋混凝土构件需承受反复荷载,HRBF500钢筋混凝土梁的疲劳寿命预测成为必须解决的问题.基于ANSYS软件,对配有HRBF500钢筋的矩形和T形混凝土梁的疲劳寿命进行分析,得出影响疲劳寿命的主要因素为配筋率,最小疲劳荷载及荷载幅,寿命预测和试验结果吻合较好.为了使预测方法用于实际工程设计,在有限元计算的基础上进行系统的分析、拟合,提出了HRBF500钢筋混凝土梁疲劳寿命预测的简化计算公式,可为实际高铁工程设计提供参考. |
| 关 键 词： | 钢筋混凝土梁 HRBF500钢筋 疲劳寿命 有限元分析 |
The Fatigue Life Prediction and Analysis of RC Beams with HRBF500 Used in High-speed Rail |
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| WANG Xin-ling , GAO Hui-zong , LI Ke.The Fatigue Life Prediction and Analysis of RC Beams with HRBF500 Used in High-speed Rail[J].Journal of Zhengzhou University: Eng Sci,2012,33(1):1-5. | |
| Authors: | WANG Xin-ling GAO Hui-zong LI Ke |
| Affiliation: | 1.School of Civil Engineering Zhengzhou University,Zhengzhou 450001,China;2.China Radio & TV International Architecture Design-Research Institute,Beijing 100045,China; 3.School of Civil Engineering Southeast University,Nanjing 210096,China) |
| Abstract: | 500 MPa level hot rolled steel bar of ultra-fine grains(HRBF500 steel bar)is successfully developed new-type steel of high-speed railways in Chinese metallurgical industry.HRBF500 steel bars will be used in high-speed reinforced,so it will be exposed to repeated loads.In view of that,the fatigue life predictions of RC beams reinforced with HRBF500’S are urgent to be solved.Based on ANSYS software,the fatigus life predictions of rectangular and T-section RC beams reinforced with HRBF500 were studied and compared well with the test results,which indicated that steel ratio,minimum fatigue load and load amplitude were the main factors affecting the fatiue life.In order to promote prediction method for practcal engineering design,the simplified fatigud life formulas were obtained based on comprehensive analysis of finite element calculation results.Those formulas can provide guidance for practical engineering design. |
| Keywords: | RC beam HRBF500 steel fatigue life finite element analysis |
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