This paper recounts a real-time hybrid simulation (RTHS) that employed a shake table coupled with an actuator to evaluate the seismic performance of a single-span girder bridge. The test specimen for this RTHS was a scaled single-span girder bridge, which was subjected to Loma Prieta excitation in the test. In the RTHS, the bridge specimen, which lacked mass on top of the bridge deck, was physically tested by a shake table and an actuator, whilst the mass on the bridge, as well as the pile foundation and the soil were modeled numerically. OpenSEES was used for numerical modeling and OpenFresco was used for the communication between the test system and numerical model. An adaptive time series (ATS) technique was employed to compensate for time delay in the RTHS. In this way, a novel bridge engineering RTHS application case composed of shake table and actuator control was presented. To validate the results of the RTHS, a shake table test (STT) of the bridge structure with full mass on the bridge deck was conducted correspondingly. Comparing the RTHS and STT results, it can be concluded that acceleration histories, bearing deformation histories, and strain histories of the selected points matched well. The application of RTHS to assess the seismic behavior of the single-span girder bridge was reasonably verified in this paper.

本文讲述了一个实时混合仿真（RTHS），它采用了一个振动台和一个执行器来评估单跨箱梁桥的抗震性能。该RTHS的测试样本是一个缩放的单跨大梁桥，在测试中对它进行了Loma Prieta激励。在RTHS中，通过振动台和执行器对桥面顶部没有质量的桥梁标本进行了物理测试，同时对桥梁，桩基和土壤的质量进行了数值模拟。OpenSEES用于数值建模，而OpenFresco用于测试系统与数值模型之间的通信。自适应时间序列（ATS）技术用于补偿RTHS中的时间延迟。这样，提出了一种由振动台和执行器控制组成的新型桥梁工程RTHS应用案例。为了验证RTHS的结果，对桥面满载的桥梁结构进行了相应的振动台试验（STT）。比较RTHS和STT结果，可以得出结论，所选点的加速度历史，轴承变形历史和应变历史匹配得很好。本文合理地验证了RTHS在单跨梁桥抗震性能评估中的应用。轴承变形历史和所选点的应变历史吻合得很好。本文合理地验证了RTHS在单跨梁桥抗震性能评估中的应用。轴承变形历史和所选点的应变历史吻合得很好。本文合理地验证了RTHS在单跨梁桥抗震性能评估中的应用。