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在第一部分中提出的模型修正及采用半主动摩擦阻尼器进行建筑结构振动控制和损伤监测的综合程序的基础上,对所提程序的可行性和应用问题进行数值研究。首次在建筑案例中采用模型修正计划确定结构参数。对影响模型修正的噪声测量、不完全测量信息和阻尼器刚度进行评估。通过与具有相同局部反馈控制策略但没有Kalman过滤器以及具有全部反馈控制策略情况的对比,评估了带有Kalman过滤器,由局部反馈策略控制的半主动摩擦阻尼器建筑物地震响应的控制性能。确定适宜修正和振动控制模型的最优阻尼器刚度。最后,对不同损坏程度和有无噪声污染区域提出了两种破坏情形,以确保损伤监测方案的精确性。另外,对所提出的损伤监测方案与传统的敏感性方法进行对比,数值结果证明了综合程序的可行性。
Based on the model revision proposed in the first part and the comprehensive program of vibration control and damage monitoring of building structure using semi-active friction damper, the feasibility and application of the proposed program are numerically studied. For the first time, a model revision plan was used in the building case to determine the structural parameters. Noise measurements, incomplete measurement information, and damper stiffness that affect the model correction are evaluated. By comparing with the case of the same local feedback control strategy but without Kalman filter and with all feedback control strategies, the control performance of seismic response of buildings with Kalman filter and semi-active friction damper controlled by local feedback strategy was evaluated. Determine the optimum damper stiffness for proper correction and vibration control models. Finally, two types of damage scenarios were proposed for different degrees of damage and noise-free areas to ensure the accuracy of the damage monitoring program. In addition, the proposed damage monitoring program is compared with the traditional sensitivity method. The numerical results prove the feasibility of the integrated procedure.