Friday, June 1, 2012: In the third and final phase of the NEESAdaptStruct project, the influence of negative
stiffness on the performance of a seismically-isolated bridge structure will be evaluated via numerical simulations and
experimental shaking table tests. For more information, please, click here.
Thursday, November 18, 2011: In the second phase of this study, the concept of "weakening and damping" is verified in a prototype
1:3 scale moment-frame designed at University at Buffalo (UB) and tested by the researchers at UB, Rice Univeristy and Taylor Devices, Inc.
The current testing series is underway and is planned to end on or before December 23, 2011
Monday August 29, 2011 Part of the overall research project on Simulation of the Seismic Performance of Nonstructural Systems
lead by the University of Nevada Reno, the University at Buffalo team of this NSF Sponsored Grand Challenge project (NEESR-GC)
on studies of non-structural components is conducting a testing series of suspended ceilings and associated components (lighting, etc)
using full size 20x50 ft (6x16 m) and 20x20 ft (6x6 m) frames, to be completed in Fall 2011 using the tandem shake tables at SEESL
(University at Buffalo). For more information please go here.
Wednesday, May 04, 2011: NSF and NEES funded large scale low aspect ratio (height/length) reinforced concrete shear wall testing is
underway in the SEESL Laboratory at the University at Buffalo.
Wednesday, November 17, 2010: As part of the NEES TIPS project, earthquake simulator testing is underway at UB-NEES, to assess the performance limit states of seismically isolated buildings under strong ground motions. The experimental program includes component testing of elastomeric bearings to characterize their stability and system level shakes table experiments to examine limits states of isolated building systems under extreme ground shaking.
Thursday, May 20, 2010: A SEESL/NEES@Buffalo YouTube Channel has been created where you will be able to see videos and news coeverage of some the tests done here.
Monday, November 23, 2009:at 2:00 PM EST To get a better understanding of how container cranes respond during an earthquake, a 1/10th scale model of a container crane has been designed and will be tested on the shake table at the University at Buffalo. The objective of the test is to measure the response of the crane from small levels of shaking to those large enough to cause the test crane to collapse. The upcoming test will be the largest ever performed in the United States and the first shake table test in the world to test to collapse.
Wednesday, July 29, 2009:at 8:00 AM EST, 21:00 JST, we will be conducting a geographically distributed hybrid simulation of a four story steel moment frame building subjected to the 1995 JR Takatori record at 100% scale. The building model is based on the four story steel moment frame building tested to collapse at E-Defense, Japan in September 2007.
August 4, 2008 NEES@Buffalo will begin testing the 1:20 port crane scale model as a part of Seismic Preformance of Cranes project which forms part of NEESGC - Seismic Risk Management for Port Systems project. The model will be subjected to a suite of ground motions that are representative of the criteria used for the design of port structures. The suite of ground motions consist of two operating level earthquakes, two contingency level earthquakes, and ground motions recorded on a wharf at the Port of Oakland during the Loma Prieta earthquake.
For more information and to view Live video of the testing, click here
NEESCollapse project objectives are: to document a comprehensive collapse experiment with data that covers the range of response of a 4 – story steel frame structure from elastic behavior to incipient collapse, to evaluate effectiveness of analytical models that model explicitly deterioration and to generate landmark experimental data to be used by all project participants
For more information on NEESCollapse project, please, click here.
The NEESPiles project will involve the laminar box filled with saturated sand at a relative density of 40-50%. The first test denoted by LG-1 involves a level ground deposit subjected to shaking, and the second experiment denoted by SG-1 involves a gently sloping ground at a slope of about 2 to 3 degrees.
Since the start of the NEESWood Project on September 15, 2005, preparations are underway for the NEESWood Benchmark shake table testing of a two-story
woodframe townhouse that will require the simultaneous use of the two three-dimensional shake tables acting in unison at the SUNY-Buffalo NEES node. As the largest full-scale three-dimensional shake table test ever performed in the U.S., the results of this series of shake table tests will serve as a benchmark for woodframe performance as well as for the validation of numerical models. The first testing phase is planned for the first week of June 2006.
Zipper Frames Test 2005
Dynamic Seismic Response of Steel Braced Frames with Innovative Bracing Configurations
On Tuesday August 2, 2005 we conducted, 2nd phase shake table testing
of a 3-story, 42 kips, steel frame model equipped with advanced braces ("Zipper Frames")
on one of the two new seismic simulators of the new NEES expansion of the Structural
Engineering and Earthquake Simulation Laboratory (SEESL) of the Department of Civil,
Structural and Environmental Engineering (CSEE) at the University at Buffalo
(State University of New York). The testing was similar to the test in phase 1 (see bellow) with the beams of the frame restrained laterally in their mid-span to prevent torsion. This Experiment was webcasted Live. The test lasted whole day and the specific starting times of different test components were posted as the test progresses. To see the experiment click here.
Zipper Frames Test
Dynamic Seismic Response of Steel Braced Frames with Innovative Bracing Configurations
On Wednesday December 8, 2004 we will conduct shake table testing
of a 3-story, 42 kips, steel frame model equipped with advanced braces ("Zipper Frames")
on one of the two new seismic simulators of the new NEES expansion of the Structural
Engineering and Earthquake Simulation Laboratory (SEESL) of the Department of Civil,
Structural and Environmental Engineering (CSEE) at the University at Buffalo
(State University of New York).This Experiment will be webcast Live. The test will last whole day and the specific starting times of different test components will be posted as the test progresses. To see the experiment click here. PDF Presentation Powerpoint Presentation (Password Access)
On Friday December 3, 2004 we conducted a demonstration test of a 6-story, 240 kN
seismically isolated model on one of the two new seismic simulators of the
Structural Engineering and Earthquake Simulation Laboratory (SEESL) of the
Department of Civil, Structural and Environmental Engineering (CSEE) at the
University at Buffalo, State University of New York.
On Friday, September 24, 2004 we conducted an opening ceremonies test.
The demonstration featured a scale model of a five-story building, located on one shake table.
The model was equipped with seismic dampers in the east-west direction.
