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January 11, 2004
The nonlinear behavior of a w8x35 (the experimental substructure) within a 2 bay 2 story steel frame structure (the analytical substructure) is tested in real-time.
April 14, 2005
This Parametric Study on Shear Overstrength is intended to examine the precast diaphragm performance (strength, stiffness, limit state sequence and occurrence, and ductility) as a function of diaphragm shear strength.
October 01, 2004
A suite of experiments was performed to investigate the performance of buried pipelines and conduits subjected to large ground deformations. Full-scale laboratory tests were performed at Cornell University and small-scale centrifuge tests were conducted...
May 06, 2005
This is the area for NEES Cyberinfrastructure Information Security. Currently only open to NEES Equipment Site System Administrators, NEESit and NEESinc staff
October 01, 2003
This project completed several RC frame collapse experiments using shake table at NCREE, Taiwan. Here are some low-resolution videos. The measured data (loads, accelerations, displacements, strains...) are not released yet.
May 20, 2005
This NSF-sponsored program (OISE) provides undergraduate and graduate researchers with international experiences in earthquake engineering integrating structural control, soil-structure interaction and the NEES cyberinfrastructure. Students will participate...
May 16, 2005
This pre-NEESR project will conduct fast-hybrid testing at the CU NEES FHT facility using large-scale Magneto-Rheological fluid dampers (built by the Lord Corporation) as semiactive control devices distributed throughout a simulated structure for seismic...
Specimens to be tested include 1 half-scale, four story T-shaped wall; 1 three-quarter scale, two story T-shaped wall; and 3 half-scale, four story rectangular walls. This testing will be conducted in the MAST laboratory at the University of Minnesota...
This project intends to generate data on the behavior of braced steel frames with emphasis on a novel configuration called a zipper frame. In a zipper frame, the unbalanced forces set up as a result of buckling of the inverted V braces in compression...
March 01, 2004
This project consists of a series of centrifuge tests that were performed using the UC Davis geotechnical centrifuge. The purpose of these tests was to measure the amount of displacement that occurs during earthquake shaking along a preformed slickensided...
September 15, 2003
The primary objectives of this project are two folds: (1) to demonstrate how researchers from multiple universities can conduct collaborative research using a network of experimental facilities distributed around the country and utilizing the advanced...
November 15, 2004
Due to the complexity of structural performance during strong earthquakes and the highly nonlinear response of structural systems, computer simulations have to be verified with experimental data to establish their reliability. Calibration of computer...
August 08, 2005
BYU's research focuses on the behavior of soil behind a full-scale foundation when subjected to earthquake-like loadings. It is the backfill soil which helps prevent excessive horizontal movement of foundations during earthquakes. The amount of resistance...
The Precast/Prestressed Concrete Institute (PCI) is conducting a large “area of emphasis” research project on precast concrete diaphragms. The project has an ultimate goal ...
September 01, 2005
NEES testing facilities and associated simulation capabilities will be employed to develop new coupled wall systems and retrofit schemes for framed construction through the use of high-performance fiber reinforced concrete (HPFRC). This research was...
October 23, 2005
Bridge columns are subjected to combinations of actions and deformations, caused by spatially-complex earthquake ground motions, features of structural configurations and the interaction between input and response characteristics. Combined actions/loadings...
January 01, 2005
Research and experience from past earthquakes suggest the need for buildings that are less vulnerable to damage and easier to repair after a major earthquake. Of particular concern are certain conventional systems, such as concentrically braced steel...
January 16, 2005
The project is investigating a family of innovative
self-centering (SC) steel frame systems with the potential to withstand
the currently accepted design basis earthquake (DBE) ...
July 10, 2000
Recent research findings indicate that the design of high-capacity shear walls with stable ductile behavior is possible if rational failure modes that can effectively make use of the high strength and crack control properties provided by high-performance...
Understanding, predicting, and preventing collapse have always been major objectives of earthquake engineering. Collapse is the main source of injuries and loss of lives. Thus, it constitutes an engineering limit state that needs to be predicted in...
August 01, 2000
Earthquakes pose a significant threat to many U.S. seaports, which serve as crucial gateways for international trade. Current engineering practice for seismic risk reduction for port facilities is typically based on design or retrofit criteria for individual...
The objectives of the project are to develop a technique for measuring in situ nonlinear sediment response to strong shaking. Our approach brings together experimental protocols developed by physicists in the laboratory to study dynamic non-linear phenomena...
During earthquakes structural elements such as bracing members undergo a phenomenom called Ultra-Low Cycle Fatigue (ULCF), which is characterized by very few (ack of suitable micro-scale models to simulate ULCF and the computational requirements necessary...