Optimization of Tuned Liquid Damper Including Different Liquids for Lateral Displacement Control of Single and Multi-Story Structures

Abstract

This study focuses on tuned liquid dampers (TLDs) using liquids with different characteristics optimized with the adaptive harmony search algorithm (AHS). TLDs utilize the characteristic features of the liquid to absorb the dynamic forces entering the structure and benefit from the sloshing movement and the spring stiffness created by the liquid mass. TLDs have been optimized to investigate the effect of liquid characteristics on the control by analyzing various liquids. For optimization, the memory consideration ratio (HMCR) and fret width (FW) values were adapted from the classical harmony search (HS) algorithm parameters. The TLDs were used on three types of structure models, such as single-story, 10, and 40 stories. The contribution of the liquid characteristics to the damping performance was investigated by optimizing the minimum displacement under seismic excitation. According to the results, it was understood that the liquid density and kinematic viscosity do not affect single-story structures alone. However, two characteristic features should be evaluated together. As the structure mass increases, the viscosity and density become more prominent.

The Damping Properties of a Steel Structural Model With a Box-Shaped Water Reservoir Upon Top Floor

“…It is widely known that Tuned Liquid Damper can be used to reduce dynamic lateral deformation due to earthquake excitation [9,12,15,20], but it is still not clear how to determine the parameters that affect the resonance which is of significance in reducing dynamic lateral deformation (increasing damping ratio). Parameters in terms of depth of the water inside the reservoir and the length of the reservoir instead water volume inside the reservoir are studied numerically and experimentally in this research.…”

“…A swimming pool is one of the many building facilities found in hotels, apartments, and other buildings. A swimming pool is often placed on the top floor of the building and such a water reservoir contributes to the dynamic behaviour of the building structure [9,12]. As a non-solid particle, water has a wave frequency as a function of water depth and wave length [5,14].…”

Optimal Dimensioning of Retaining Walls Using Explainable Ensemble Learning Algorithms

“…Bekdaş [ 4 ] applied the applications of harmony search, flower pollination, and teaching–learning-based optimization algorithms to minimizing the total construction cost associated with axially symmetric cylindrical reinforced concrete walls. Ocak et al [ 5 , 6 ] optimized a tuned liquid damper device, which was used for lateral displacement control of structures using the adaptive harmony search algorithm. Ulusoy [ 7 ] applied the teaching–learning-based optimization algorithm to the problem of the fire-resistant design of timber-based roof structures.…”

Optimization and Predictive Modeling of Reinforced Concrete Circular Columns

“…Structural optimization aims at designing structures with the best possible dimensions that minimize cost without any impact on structural performance. In recent years metaheuristic optimization techniques have been increasingly applied to the optimization of different structures such as cylindrical reinforced concrete walls [ 1 , 2 ], retaining walls [ 3 , 4 , 5 ], plate girders [ 6 ], laminated composite plates [ 7 , 8 , 9 ], concrete-filled steel tubes [ 10 , 11 ], truss systems [ 12 ], timber structures [ 13 ], and liquid mass dampers [ 14 , 15 , 16 ]. These algorithms can be divided into evolutionary, physics-based, swarm-based, and population-based algorithms [ 17 , 18 , 19 ].…”