中南大学学报（自然科学版）2018，Vol.49Issue(6)：1459-1464,6.DOI:10.11817/j.issn.1672-7207.2018.06.019
PMS-500脉动疲劳加载的动态试验力修正
Correction method of dynamic testing force applied by fatigue testing machine mode PMS-500
摘要
Abstract
In view of the distortion problem of dynamic test force from concrete beam stiffness degradation in the process of fatigue loading, and based on the working principle of PMS-500 hydraulic pulsation fatigue testing machine, a correction method using the correction coefficient of inertia force for the dynamic test force was proposed. And it was applied to the modification of the dynamic test force of the fatigue test of seven prestressed concrete beams. The results show that during the fatigue loading of prestressed concrete beams, the correction coefficient of inertia force is about 2.5%. Dynamic test force deviates from the pre added fatigue loading value in a three-stage increasing rule. After correction, the maximum error of the lower limit of load is about 5%, and the maximum error of the higher limit of load is about 1.3%. Therefore, the accuracy of the method is verified.关键词
脉动疲劳试验/动态试验力失真/惯性力修正Key words
fatigue test/dynamic force error/inertia force correction分类
建筑与水利引用本文复制引用
卫军,陈涛,黄敦文,王陈贵生,李松林..PMS-500脉动疲劳加载的动态试验力修正[J].中南大学学报（自然科学版）,2018,49(6):1459-1464,6.基金项目
国家自然科学基金资助项目(51378501,51578547)(Projects(51378501, 51578547) supported by the National Natural Science Foundation of China) （51378501,51578547）
