Number of tall buildings in metropolitan areas such as Istanbul increased dramatically in recent years. On the other hand, it is crucial to conduct condition assessment of such structures after an earthquake due to public safety and owner-need reasons. Structural health monitoring (SHM) enables condition assessment of structures before, during and after earthquake rapidly, remotely and objectively. SHM systems are mandatory to be installed on tall buildings in Turkey since 2019 because of their significant contribution to our understanding of dynamic behavior of tall buildings and our capability of condition monitoring. With the motivations and reasons mentioned above, three tall buildings in Istanbul have been monitored continuously by the research team led by the second author. In the first part of this paper, results from long-term monitoring of Building-3 are presented and also, identification of modal parameters before, during and after Mw 5.7 earthquake by different methods are discussed. Afterwards, a unique methodology on the development and updating of Timoshenko beam model of the building based on identification results is given. This methodology is able to estimate the accelerations of non-instrumented floors from instrumented floors; therefore, condition assessment of the building during an earthquake can be precisely performed by computing inter-story drift ratios. In addition to tracking modal values and calculating inter-story drifts, determination of wave propagation is explained as an alternative condition assessment tool. Lastly, in-house developed software platform for real-time monitoring of tall buildings is presented.

近年来，伊斯坦布尔等大都市地区的高层建筑数量急剧增加。另一方面，出于公共安全和业主需要的原因，在地震后对此类结构进行状况评估至关重要。结构健康监测 (SHM) 能够快速、远程和客观地对地震前、地震中和地震后的结构进行状态评估。自 2019 年以来，土耳其强制要求在高层建筑上安装 SHM 系统，因为它们对我们了解高层建筑的动态行为和我们的状态监测能力做出了重大贡献。基于上述动机和原因，第二作者领导的研究团队对伊斯坦布尔的三座高楼进行了持续监测。在本文的第一部分，介绍了 3 号楼长期监测的结果，并讨论了使用不同方法在 Mw 5.7 地震之前、期间和之后识别模态参数。随后，给出了基于识别结果的建筑铁木辛柯梁模型的开发和更新的独特方法。这种方法能够从有仪表的地板估计非仪表地板的加速度；因此，可以通过计算层间漂移率来精确地进行地震期间建筑物的状况评估。除了跟踪模态值和计算层间漂移外，波传播的确定被解释为一种替代条件评估工具。最后，介绍了内部开发的用于高层建筑实时监控的软件平台。