Experimental Investigation on Performance of Multiple Direction Optimized-Friction Pendulum System With Multiple Sliding Interfaces in Mitigating Structural Responses During Earthquakes

Tsai, C. S.; Hsueh, Chao-Kuang; Su, Hui‐Chen

doi:10.1115/pvp2011-57598

Volume 8: Seismic Engineering 2011

DOI: 10.1115/pvp2011-57598

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Experimental Investigation on Performance of Multiple Direction Optimized-Friction Pendulum System With Multiple Sliding Interfaces in Mitigating Structural Responses During Earthquakes

C. S. Tsai

Chao-Kuang Hsueh

Hui‐Chen Su

Abstract: This paper is aimed at the performance evaluation of the multiple direction-optimized friction pendulum system (MDO-FPS) with multiple sliding interfaces on seismic mitigation through a series of shaking table tests of a full scale building isolated with MDO-FPS isolators. Experimental tests of a three-story steel building of 40 tons in total weight, 3m and 4.5m in length and width, respectively, in two horizontal directions and 9m in height, subjected to various types of earthquakes were carried out to invest… Show more

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Advanced Base Isolation Systems for Light Weight Equipments

Tsai¹

2012

Earthquake-Resistant Structures - Design, Assessment and Rehabilitation

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This chapter is intended to introduce the earthquake proof technology particularly in the area of base isolation systems that have been used to protect light weight structures, such as motion sensitive equipment, historic treasures, and medical instruments, etc., from earthquake damage. This chapter presents theoretical background, experimental studies, numerical analyses, and the applications of the advanced isolation systems consisting of rolling-and sliding-type isolation systems for light weight structures. The efficiency of these isolators in reducing the seismic responses of light weight equipment was also investigated in this study. In addition, the results from theoretical and experimental studies for these isolators are compared and discussed. General backgroundOne of the greatest casualties in recorded history is the Huaxian earthquake that occurred in China in 1556, causing over 830,000 deaths (Kanamori, 1978). The Tangshan great earthquake that struck the northeastern part of China in 1976 killed 242,769 people, according to official sources, although some estimates of the death toll are as high as 650,000 (Kanamori, 1978). The Mw 7.0 earthquake (Eberhard et al., 2010) that struck the Republic of Haiti on January 12, 2010, resulted in a death toll, as reported by the Government of Haiti, that exceeds 217,000, with an additional 300,000 people injured. The earthquake damaged nearly 190,000 houses, of which 105,000 were completely destroyed, and left long term suffering for the residents of the country. The moment magnitude 9.0 Tohoku earthquake (Takewakin et al., 2011) that struck eastern Japan on March 11, 2011, is one of the most five powerful earthquakes in the world since modern measurements began in 1900, killing more than 20,000 people and causing huge damage and economic loss that cannot be ignored. Traditionally designed structures have used the strength and ductility of their structural members to resist the seismic forces or dissipate earthquake induced energy. However, many past earthquakes have proven that structures collapse or lose their functionality when the ductility capacity of the structures is consumed during the earthquake. Even if the structures survive earthquakes through excellent designs to provide more strength or ductility to the structures, the vibration sensitive equipment located in the structures may still lose its functionality due to floor accelerations. www.intechopen.comEarthquake-Resistant Structures -Design, Assessment and Rehabilitation 80Several techniques exist to minimize earthquake effects on structures, such as light-weight structure design, improving the ductility capacities of structures, and structural control (earthquake proof technology), etc. Structural control technology has been recognized as an effective tool in seismic mitigation, and can be classified as active, passive, hybrid and semiactive controls, which can be clarified by the following equation:

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Advanced Base Isolation Systems for Light Weight Equipments

Tsai¹

2012

Earthquake-Resistant Structures - Design, Assessment and Rehabilitation

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Experimental Investigation on Performance of Multiple Direction Optimized-Friction Pendulum System With Multiple Sliding Interfaces in Mitigating Structural Responses During Earthquakes

Cited by 1 publication

References 0 publications

Advanced Base Isolation Systems for Light Weight Equipments

Advanced Base Isolation Systems for Light Weight Equipments

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