Title:
Effect of Interfacial Shear on Seismic Performance of Precast Shear Walls
Author(s):
Wei Zhang, Deuckhang Lee, and Dichuan Zhang
Publication:
Structural Journal
Volume:
120
Issue:
1
Appears on pages(s):
269-284
Keywords:
connection; coupling; precast concrete; seismic performance; shear; shear wall
DOI:
10.14359/51736126
Date:
1/1/2023
Abstract:
Coupling action developed by interfacial shear along vertical
connections between precast concrete (PC) wall segments has
significant impacts on the seismic performance of a precast shear wall building system. This study investigated the effect of various seismic details on lateral performances of coupled intermediate precast shear wall systems through reversed cyclic tests, and direct shear tests were also conducted to characterize local interfacial shear behaviors between individual PC wall segments. On this basis, a series of numerical investigations were then carried out to further identify how the interfacial shear behavior affects the
seismic responses of PC shear wall systems through an advanced finite element (FE) analysis approach. To this end, several interfacial shear curves were generated considering various combinations of the maximum shear capacities, stiffness, and post peak responses, and subsequent nonlinear cyclic analyses were conducted. It was numerically confirmed that the maximum interfacial shear strength is a key influential factor to the lateral flexural strength of PC shear wall systems, while stiffness and post-peak strength degradation of interfacial shear curves affect their energy dissipation and lateral drift capabilities, respectively.