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实时耦联动力试验(RTDHT)是一种将物理模型试验与数值求解计算实时耦联在一起的新型结构动力试验方法。该文基于振动台构建了振动台型RTDHT试验系统,并对其动力特性进行了研究。利用所构建的RTDHT试验系统,研究了一个双层刚架结构的自振特性及动力反应,其中上层框架为物理子结构,而下层框架为数值子结构,通过两部分之间的实时数据交互得到整体结构的动力响应。将双层刚架的RTDHT试验结果与CDM数值计算结果进行了对比,结果表明二者吻合较好,基于该试验系统的RTDHT试验具有较高的精度。
The real-time coupled dynamic test (RTDHT) is a new type of structural dynamic test method that real-time couples the physical model test with the numerical solution calculation. Based on the shaking table, this paper builds a shaking table type RTDHT test system, and studies its dynamic characteristics. The self-vibration characteristics and dynamic response of a double-story rigid frame structure are studied by using the RTDHT test system. The upper frame is a physical substructure and the lower frame is a numerical substructure, which is obtained through the real-time data exchange between the two parts The overall structure of the dynamic response. The results of RTDHT test and CDM calculation of double-deck frame are compared. The results show that the two agree well with each other, and the RTDHT test based on this test system has higher accuracy.