Seismic response mitigation of structures with a friction pendulum inerter system

Friction pendulum systems are sliding bearing that make use of a spherical concave surface to provide a restoring force and friction force to dissipate earthquakes energy. Seismic response reduction effect of some tall pier and long span simply-supported steel truss girders with FPS is researched by using nonlinear time history analysis method. The results show that seismic response reduction effect is evident for the moment at the bottom of pier and displacement at the top of pier for the tall pier and long span simply-supported steel truss girders.

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The Seismic Response Analysis of LNG Storage Tank Isolated by Multiple Friction Pendulum System

ASME 2011 Pressure Vessels and Piping Conference: Volume 8 ◽

10.1115/pvp2011-57717 ◽

2011 ◽

Author(s):

Dagen Weng ◽

Ruifu Zhang ◽

Xiaosong Ren

Keyword(s):

Seismic Response ◽

Element Model ◽

Dominant Frequency ◽

Response Analysis ◽

Isolation System ◽

Pendulum System ◽

System Data ◽

Lng Tank ◽

Friction Pendulum ◽

Friction Pendulum System

The seismic response of extra-large Liquefied Natural Gas (LNG) tank isolated vertically by multiple friction pendulum system (MFPS) is analyzed. The fundamental frequency of the extra-large LNG tank is usually the range of dominant frequency of most earthquake ground motions. It is an effective way to decrease the response for an isolation system being used for extra-large LNG storage tanks under the strong earthquake. However, it is rather difficult to implement in practice using common bearings because of low temperature, soft site and other severe environment factors. The extra-large LNG tank isolated by MFPS is presented in this study to solve these problems. MFPS is appropriate for large displacements induced by earthquakes with long predominant periods. A simplified finite element model by Malhotra and Dunkerly methods is used to judge the utility of the isolation system. Data reported and statistically sorted include pile shear, wave height, impulsive acceleration, convective acceleration and outer tank acceleration. The results show that the isolation system has excellent adaptability for different liquid levels and is very effective to control seismic response of the extra-large LNG tank.

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Seismic response of triple friction pendulum bearing under multi hazard level excitations

International Journal of Structural Engineering ◽

10.1504/ijstructe.2016.079288 ◽

2016 ◽

Vol 7 (4) ◽

pp. 412 ◽

Cited By ~ 4

Author(s):

Mazhar A. Dhankot ◽

Devesh P. Soni

Keyword(s):

Seismic Response ◽

Hazard Level ◽

Friction Pendulum

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