Rocking Wall-Floor-Column Subassemblage Pseudo-Static Cyclic Test at NEES@UMN (MAST) Specimen 2

A large scale subassemblage test was conducted at NEES@UMN (MAST) to
investigate the “vertical movement isolation” wall‐floor connection
concept and the interaction of the rocking wall with the surrounding
structural systems, including slabs and columns. The quasi‐static
nature of MAST prevents investigation of dynamic energy losses associated
with wall rocking. Test was conducted on 1/3‐scale portions of the prototype structures featuring PreWEC systems attached to one story 10’x20’ floor diaphragm in plan. Steel trusses were utilized in the test to constrain the deformed shape of the 1st story columns. Lateral drift up to 5% was applied to the specimen. The PreWEC and floor were extensively instrumented to observe the specimen behavior including 177 strain gauges,
58 Linear Variable Differential Transformer (LVDT) devices, 26 String Pots,10 DCDT and 13 load cells. Test results will be used to evaluate the performance of the PreWEC and floor systems and the analytical models.