Restricted Research - Award List, Note/Discussion Page

Fiscal Year: 2021

158  University of North Texas  (84454)

Principal Investigator: Yu,Cheng

Total Amount of Contract, Award, or Gift (Annual before 2011): $ 31,000

Exceeds $250,000 (Is it flagged?): No

Start and End Dates: - 9/30/21

Restricted Research: YES

Academic Discipline: Mechanical Engineering

Department, Center, School, or Institute: College of Engineering

Title of Contract, Award, or Gift: Behavior and Performance of Light Frame Shear Walls Sheathed by Composite Panels

Name of Granting or Contracting Agency/Entity: Ectek International Inc.


Program Title: N/A


The shear wall test program is planned to be carried out in the Structural Testing Laboratory at the Discovery Park of the University of North Texas, Denton, Texas. A total of 6 monotonic and 7 cyclic shear wall tests will be conducted. Both the monotonic and the cyclic tests will be conducted in a displacement control mode. The procedure of the monotonic tests will be in accordance with ASTM E564-12 “Standard Practice for Static Load Test for Shear Resistance of Framed Walls for Buildings.” The monotonic tests and the cyclic tests will be performed on a 16-ft. span, 12-ft. high adaptable structural steel testing frame. The wall specimen will be bolted to the base beam and loaded horizontally at the top. A “T” shape hot-rolled steel load beam will be used to apply horizontal forces to the top track of wall. The “T” shape will be attached to the top track of the wall by 2 - No. 12 x 1-1/2-in. hex washer head (HWH) self-drilling self-tapping screws placed every 3-in. on center. The out-of-plane displacement of the wall will be prevented by a series of steel rollers placed on both sides of the “T” shape load beam. The wall specimen will be anchored to the hot-rolled steel base beam by four 3/8-in. ASTM A325 bolts with standard cut washers, as shown in Figure 4. The base beam will be 10-in. X 4-in. X ½-in. structural steel tubing. The web of the structural steel base beam will be cut-out in several locations on one side to provide access to anchor bolts. The testing frame is equipped with one MTS 35-kip hydraulic actuator with 5-in. stroke. A Shore Western SC6000 controller and one 20-Gpm MTS hydraulic power unit will be employed to support the loading system. A 30-kip TRANSDUCER TECHNIQUES SWO universal compression/tension load cell will be placed to connect the hydraulic actuator to the “T” shape for force measurement. Five NOVOTECHNIC position transducers will be employed to measure the horizontal displacement at the top of wall, the vertical displacements of the two boundary studs, and the horizontal displacements of the bottom of the two boundary studs. The data acquisition system consisted of a National Instruments unit (including a PCI6225 DAQ card, a SCXI1100 chassis with SCXI1520 load cell sensor module and SCXI1540 LVDT input module) and a desktop PC. The applied force and the five displacements will be measured and recorded instantaneously during the test.

Discussion: No discussion notes


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