Unr shake table test

Oct 11, 2019 Driving the shake table are eight large hydraulic actuators set at 45 degree angles to the north-south axis of the table (four at each end of the table). In this way the table can be moved in the north-south and east-west directions simultaneously exciting the

Sep 01, 2018 requires unique distributed shake table systems with sufficient capacity to test large-scale bridge models, and (3) bridge system tests are costly because of the number of components involved and the associated labor and laboratory fee costs. The second barrier is addressed by the state-of-the-art shake table testing facility at UNR

Shake Table Testing Program Test Series #2 (with mitigation measure) Observations and Path Forward 3. Background and Motivation 2011 M9.0 Tohoku Earthquake ... UNR. Testing Program Test # PGA (g) GWT (m) 2-1 0.15 g 0.6 2-2 0.3 g 0.6 • Two series of tests 1. Without any mitigation (baseline test) –Completed June 2018

The overall objectives of the project are listed below. The objective of the December 2008 shake table test at UNR is to determine the system behavior of a reinforced concrete 4-span bridge that incorporate innovative materials and details that include Nickel-Titanium alloys, fiber-reinforced concrete, and columns with built-in Elastomers

shake table and connect to the inertial system (Figure 2). The column was designed with a natural frequency of 5Hz, low damping, and a force feedback of at least 50% of the desired actuator force. These parameters are typical of some of the research specimens tested in the past. Figure 1: University of Nevada, Reno Shake Table System

Shake tables and specimens can at a minimum be described by spring-mass dampers 2. Delay (phase) is partly from the shake table and partly from the controllerDelay (phase) is partly from the shake table and partly from the controller- ... We have a set of tools, and each test requires a ... 3 UNR 43 UNR 4--span bridgesspan bridges 3 different

Maintain the shake table for safe efficient and accurateMaintain the shake table for safe, efficient, and accurate operation Ait ith i tl i l tiAssist users with experiment planning, proposal preparation, specimen construction, instrumentation, data acquisition, test performance, demolition and removal

bidirectional shake table facility at University of Nevada, Reno (UNR). As part of the study, an inertial loading system was developed to test on shake table single RCC under biaxial ground motions. Two sets of circular and interlocking RCC will be subjected to different levels of biaxial, torsion and vertical loads through real

Shake Table Test . Shake Table Testing of Precast Rocking Wall with Side column_1 (PreWEC-s1) (June 27, 2013 - June 28, 2013) One of the essential considerations in seismic design of structures is to provide life safety. While the focus on life safety is to protect the buildings, occupants, substantial economic losses ensue when an earthquake

4. TEST SETUP AND LOADING PROTOCOL Both columns were tested on a shake table in the new Earthquake Engineering Laboratory at the University of Nevada, Reno. Each specimen was attached to an inertial mass of 80 kips as shown in Fig. 4.1. The ground motions were uniaxial and applied along the North-South direction of the laboratory

Test #1-1: PGA= 0.15g, GWT= 0.6m 15 Observations and Conclusions Test series#1 (benchmark) results are being processed Extensive liquefaction and sand ejecta were achieved So far, very good agreement with published literature and prior 1-g scaled shake table tests at UNR Benchmark test is being evaluated for a potential blind

It was the biggest bridge test the lab had ever attempted. The UNR-NEES facility includes three biaxial shake tables, a 6DOF shake table and a custom hydrostatic bearing designed by MTS that allows the tables to be installed directly on the strong floor instead of in a trench