EFFECT OF INTERFACIAL SHEAR ON SEISMIC PERFORMANCE OF PRECAST SHEAR WALLS

Wei Zhang, Deuckhang Lee, Dichuan Zhang

Research output: Contribution to journalArticlepeer-review

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 postpeak 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.

Original languageEnglish
Pages (from-to)269-284
Number of pages16
JournalACI Structural Journal
Volume120
Issue number1
DOIs
Publication statusPublished - Jan 2023

Keywords

  • connection
  • coupling
  • precast concrete
  • seismic performance
  • shear
  • shear wall

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction

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