Seismic isolation effect of tunable friction pendulum system in bridge

ABSTRACT

A Tunable Friction Pendulum System (TFPS) was proposed to investigate its seismic isolation control performance in bridge structures. First, the structural design and theoretical model of TFPS are given. Second, the mechanical properties of TFPS are studied through finite element simulation. Then, the above TFPS is introduced into the bridge structure, and the analysis model is established based on SAP2000. Finally, a nonlinear time-history analysis is carried out on the bridge structure, and the seismic isolation performance of TFPS is evaluated by using the dynamic characteristic response index of the bridge structure. Theoretical derivation and finite element analysis results show that TFPS can adjust the dynamic characteristics in real time according to the spectral characteristics of the ground motion input and the response of the structure itself, so that the friction force can be continuously adjusted and energy consumption can be adjusted.

KEYWORDS:

• Tunable friction pendulum system
• pseudo-static method
• hysteretic behaviour
• bridge seismic

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

Science and Technology Development Program of Henan Province (232400410325), Key Research Programs of Higher Education Institutions in Henan Province (22B560014, 24B560019), University-level scientific research project of Shangqiu Institute of Technology (2022KYXM05, 2022KYXM09, 2023KYXM23). Their supports are gratefully acknowledged.