|
Structural Monitoring and Maintenance Volume 8, Number 3, September 2021 , pages 221-234 DOI: https://doi.org/10.12989/smm.2021.8.3.221 |
||
|
Effect of foundation uplift on seismic behavior of three-dimensional structure controlled with tuned mass damper |
||
Hamid Mortezaie and Reza Zamanian
|
||
| Abstract | ||
| In general, uplift causes changes in the structural system making its behavior and dynamic characteristics very different to common soil-structure models where no uplift is applied. Changes in rotational stiffness and lateral stiffness of structures, variations in radiation damping as well as the effective damping of structure are among the examples of these changes. Many valuable studies have been carried out in the past years about seismic control of structures with tuned mass damper (TMD) in case of two-dimensional shear structures with few performed in case of three-dimensional shear buildings. More realistic and complex models should be used in evaluating the seismic performance and design of controllers to simulate the actual behavior of buildings with higher accuracy. In this research, a three-dimensional finite element model has been created in OpenSees software with completely nonlinear and updated behavior of soil-structure system. The effects of uplift on soil-structure system equipped with TMD have been assessed using it. The conditions of employing TMD with variable stiffness have been evaluated with respect to the process carried out in this research. According to the results, based on the type of soil the structure has been designed based on, the uplift of structure can be reduced by installing TMD while it cannot be reliably used for reducing displacement and lateral acceleration of the structure. Finally, evaluation of other responses of the structure related to damages to the structure revealed the good performance of TMD. | ||
| Key Words | ||
| high-rise concrete structures; nonlinear analysis; soil-structure interaction; tuned mass damper; uplift | ||
| Address | ||
| (1) Hamid Mortezaie: Department of Civil Engineering, Faculty of Hamedan, Hamedan Branch, Technical and Vocational University (TVU), Hamedan, Iran; (2) Reza Zamanian: Department of Earthquake Engineering, Tarbiat Modares University, nasr, jalal Al Ahmad St, 14115-111, Tehran, Iran. | ||
