Abstract
Suspended piping systems often suffer from severe damages when subjected to seismic excitation. Due to the high flexibility of the piping systems, reducing their displacement is important for the prevention of damage during times of disaster. A solution to protecting piping systems during heavy excitation is the use of the emerging pounding tuned mass damper (PTMD) technology. In particular, the single-sided PTMD combines the advantages of the tuned mass damper (TMD) and the impact damper, including the benefits of a simple design and rapid, efficient energy dissipation. In this paper, two single-sided PTMDs (spring steel-type PTMD and simple pendulum-type PTMD) were designed and fabricated. The dampers were tested and compared with the traditional TMD for mitigating free vibration and forced vibration. In the free vibration experiment, both PTMDs suppressed vibrations much faster than the TMD. For the forced vibration test, the frequency response of the piping system was obtained for three conditions: without control, with TMD control, and with PTMD control. These novel results demonstrate that the single-sided PTMD is a cost-effective method for efficiently and passively mitigating the vibration of suspended piping systems. Thus, the single-sided PTMD will be an important tool for increasing the resilience of structures as well as for improving the safety of their occupants.
Highlights
Suspended piping systems, which consist of water/gas pipes and cable ducts, play a crucial role in commercial buildings due to their functionality
These novel results demonstrate that the single-sided pounding tuned mass damper (PTMD) is a cost-effective method for efficiently and passively mitigating the vibration of suspended piping systems
The results showed that the PTMD system had good vibration control performance in both cases
Summary
Suspended piping systems, which consist of water/gas pipes and cable ducts, play a crucial role in commercial buildings due to their functionality. That has received extensive attention in recent years [64,65,66,67,68] It combines the advantages of the effective vibration control of a tuned mass damper (TMD), the quick energy dissipation of an impact/pounding damper, and the high energy dissipation of a viscous damper. In this paper, pounding tuned mass dampers (PTMDs) were designed to mitigate the vibration response of the suspended piping system. The pounding tuned mass damper (PTMD) was developed to combine the advantages of a TMD and an impact damper with the help of viscoelastic materials [63]. In this paper, the single-sided PTMD is selected to accomplish the vibration control of the suspended piping system.
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