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A New Testing Method for Fatigue of Reinforced Concrete Beam

机译:钢筋混凝土梁疲劳试验的新方法

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In this research, a new testing method for fatigue is proposed. The traditional hydraulic machineis replaced by vibrating motors with identical magnitude but higher frequency (12 Hz and 30 Hz)of cyclic loading on the basis of force control. The test results (including midspan deflection andbeam stiffness) for both fatigue testing systems are compared. By comparison, preloading for thebeam at first cycle and adjustment in frequency of loading are suggested to eliminate thedynamic effects for the vibrating motor system. Under such condition, the time it would take forthe fatigue testing could be reduced substantially.
机译:在这项研究中,提出了一种新的疲劳测试方法。传统液压机 由大小相同但频率较高(12 Hz和30 Hz)的振动电机代替 力控制基础上的循环载荷的计算。测试结果(包括中跨挠度和 对两个疲劳测试系统的梁刚度进行了比较。相比之下, 建议在第一个周期调整梁,并调整加载频率以消除振动。 振动电机系统的动态效果。在这种情况下,需要花费的时间 疲劳测试可以大大减少。

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