Comparison between seismic behavior of 12-and 18-story hybrid coupled wall systems

This paper evaluates and compares between the seismic behavior of hybrid coupled wall systems that are 12- and 118-stories high. System response is studied using validated, transient finite element simulations that account for the effects of concrete cracking, crushing, and steel yielding. Suites of analyses are conducted to investigate pertinent parameters including interstory drift ratios, wall rotations, roof displacements, dynamic base shear magnification, strain demands, and coupling beam plastic rotations. The results for both systems confirm that hybrid coupled walls are particularly well suited for use in regions of high seismic risk. Although the responses of both structures were essentially dominated by the first vibration mode, higher mode effects manifested themselves by causing substantial base shear magnification. The effect was somewhat higher in the taller structure.