Identification of the Dynamic Properties of the Residential Tower New Orleans
conference paper
This paper describes the application of the Frequency Domain Decomposition (FDD) technique on measured acceleration data on the residential tower New Orleans in Rotterdam, the Netherlands. The goal of this study is to determine and analyse multiple natural frequencies and mode shapes of this tower. A measurement campaign was setup on the 158 m high New Orleans tower. Accelerations were measured at the 15th, 34th and 44th floor. Modal properties are obtained using the FDD method. A total of 11 modes are identified, of which 7 modes have a clear dominant direction. The first mode, with the lowest natural frequency, is observed in X-direction, which corresponds with the lower bending stiffness of the New Orleans tower in this direction compared to the Y-direction. The second mode in X-direction has a higher natural frequency than the second mode in Y-direction. This suggests that the foundation stiffnesses in X-direction are larger than those in Y-direction. The obtained modal properties provide a good basis for further work, in which the properties of an Euler-Bernoulli beam with rotational and translational springs at the base can be determined by matching the measured modal properties.
Topics
TNO Identifier
976746
ISSN
23662557
ISBN
9783030932350
Publisher
Springer Science and Business Media Deutschland GmbH
Source title
Lecture Notes in Civil Engineering, 9th International Conference on Experimental Vibration Analysis for Civil Engineering Structures, EVACES 2021, 17 September 2021 through 20 September 2021
Pages
469-479