Real-time hybrid simulation (RTHS) is a novel structural seismic test method that has good application prospects. The applicability of RTHS for large-scale space frame structures is further investigated in this study based on high-strength steel composite Y-eccentrically braced frames (Y-HSS-EBFs). First, an RTHS system was established, which included OpenSees, OpenFresco, an xPC-Target, and an electrohydraulic servo control system. An adaptive feedforward delay compensator based on displacement prediction was introduced. Then, a shaking table test model of a three-story Y-HSS-EBF was taken as the prototype, the third-story frame with the strongest nonlinear performance was taken as the experimental substructure, and the remaining two stories were taken as the numerical substructure in order to perform the RTHS. The results of the RTHS were compared with those obtained in a purely numerical model and a shaking table test, and the stability of the RTHS system was analyzed. The results indicate that the RTHS results are in good agreement with the numerical simulation results and that RTHS can be used to obtain results similar to the ones obtained using the shaking table. In the typical seismic testing frequencies and the mass distribution ranges of the substructures, the RTHS system displayed good stability and reliability and was able to effectively evaluate the seismic performance of large-scale space frame structures.

中文翻译：

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基于高强钢组合Y偏心支撑框架的空间子结构实时混合仿真

实时混合模拟（RTHS）是一种具有良好应用前景的新型结构抗震试验方法。本研究基于高强度钢复合 Y 型偏心支撑框架 (Y-HSS-EBF)，进一步研究了 RTHS 在大型空间框架结构中的适用性。首先，建立了一个RTHS系统，包括OpenSees、OpenFresco、一个xPC-Target和一个电液伺服控制系统。介绍了一种基于位移预测的自适应前馈延迟补偿器。然后，以三层Y-HSS-EBF振动台试验模型为原型，以非线性性能最强的三层框架作为试验子结构，其余两层作为数值试验。子结构以执行 RTHS。将 RTHS 的结果与纯数值模型和振动台试验的结果进行比较，分析了 RTHS 系统的稳定性。结果表明，RTHS结果与数值模拟结果吻合良好，RTHS可用于获得与使用振动台获得的结果相似的结果。在典型的抗震试验频率和下部结构的质量分布范围内，RTHS系统表现出良好的稳定性和可靠性，能够有效评估大型空间框架结构的抗震性能。结果表明，RTHS结果与数值模拟结果吻合良好，可以使用RTHS获得与使用振动台获得的结果相似的结果。在典型的抗震试验频率和下部结构的质量分布范围内，RTHS系统表现出良好的稳定性和可靠性，能够有效评估大型空间框架结构的抗震性能。结果表明，RTHS结果与数值模拟结果吻合良好，RTHS可用于获得与使用振动台获得的结果相似的结果。在典型的抗震试验频率和下部结构的质量分布范围内，RTHS系统表现出良好的稳定性和可靠性，能够有效评估大型空间框架结构的抗震性能。