Seismic Isolation Bearing Test System

Apply high-force longitudinal motions and vertical compression to full-scale seismic isolation bearings to study their performance under real-world earthquake conditions. Deployed worldwide, these high capacity systems comprise a self-reacting frame anchored in a fixed foundation of reinforced concrete and feature a massive test platen driven by multiple servohydraulic linear actuators.

Applications

Test Specimens

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Key Product Features

Industry Standard

Deployed and supported worldwide: Eucentre Foundation – The University of Pavia, National Center for Research on Earthquake Engineering (NCREE)

Unmatched Expertise

PhD-level MTS System Integration Engineers provide expert guidance and training

Innovative Technology

State-of-the-art Control Methods: Degree-of-Freedom Control, Real-time Control, Three-variable Control, Adaptive Control

Integrated / Synchronized

Fully turnkey solution, comprising state-of-the-art controls, full-featured application software, advanced hydro-mechanicals and fatigue-rated MTS test actuators, swivels and mounting hardware

Technical Overview

	Units	NCREE BATS	NCREE MATS (Static Config)	NCREE MATS (Dynamic Config)
Vertical Compressive Force	kN	60,000	60,000	30,000
	Kips	13,500	13,500	6,700
Longitudinal Force	kN	4,000	4,400	2,000
	Kips	900	990	450
Lateral Force	kN	N/A	4,000	N/A
	Kips	N/A	900	N/A
Vertical Displacement	± mm	125	150	150
	± in	4.92	5.9	5.9
Longitudinal Displacement	± mm	1,200	1,200	500
	± in	47.25	47.25	19.68
Lateral Displacement	± mm	N/A	100	N/A
	± in	N/A	3.93	N/A
Vertical Velocity	± mm/s	150	10	60
	± in/s	5.9	0.39	2.36
Longitudinal Velocity	± mm/s	1,000	30	600
	± in/s	39.37	1.18	23.6
Lateral Velocity	± mm/s	N/A	20	N/A
	± in/s	N/A	0.79	N/A
Maximum Specimen Height	m	2	5	5
	in	78.74	196.85	196.85
Table Size	m	2.54 x 8.3	2.54 x 6.7	2.54 x 6.7
	in	100 x 326	100 x 264	100 x 264

NCREE Biaxial Dynamic Test System (BATS) NCREE Multi-axial Test System (MATS) Link 3 text

UC San Diego SRMD Test Facility

	Units	UCSD
Vertical Compressive Force	kN	53,400
	Kips	12,000
Longitudinal Force	kN	8,900
	Kips	2,000
Lateral Force	kN	4,450
	Kips	1,000
Vertical Displacement	± mm	127
	± in	5
Longitudinal Displacement	± mm	1,219
	± in	48
Lateral Displacement	± mm	610
	± in	24
Vertical Velocity	± mm/s	254
	± in/s	10
Longitudinal Velocity	± mm/s	1,800
	± in/s	70
Lateral Velocity	± mm/s	760
	± in/s	30
Maximum Specimen Height	m	1.52
	in	60
Table Size	m	3.5 x 4.8
	in	140 x 192

Caltrans Seismic Response Modification Device (SRMD) Test Facility at UCSD

	Units	EUCentre
Vertical Compressive Force	kN	40,000 ± 10,000
	Kips	9,000 ± 2250
Longitudinal Force	kN	2,100
	Kips	472
Lateral Force	kN	N/A
	Kips	N/A
Vertical Displacement	± mm	75
	± in	3
Longitudinal Displacement	± mm	580
	± in	22.83
Lateral Displacement	± mm	N/A
	± in	N/A
Vertical Velocity	± mm/s	250
	± in/s	9.84
Longitudinal Velocity	± mm/s	2200
	± in/s	86.6
Lateral Velocity	± mm/s	N/A
	± in/s	N/A
Table Size	m	1.7 x 1.9
	in	70 x 75

EUCentre ShakeLab Link 2 text Link 3 text

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These large multi-degree of freedom systems are custom and can be tailored to your needs and facility requirements. MTS can provide high force structural actuators and controls or be involved in full turn-key integration.

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