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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Precast Shearwalls Subjected to Local Panel Collapse
Author(s): 0. A. Pekau, Z. A. Zielinski, and Alan W. K. Lee
Publication: Journal Proceedings
Appears on pages(s): 324-330
Keywords: collapse; concrete panels; ductility; joints (junctions); precast concrete;prestressing; shear connectors; shearwalls; ties (reinforcement).
Abstract:This computer-based study examines the behavior of precast panel shearwalls with nonlinear-behaving joints for conditions simulating progressive collapse. These conditions are modeled by assuming static failure of individual panels at various levels within a 12-story prototype structure. Following such local panel collapse, the nonlinear behavior of the damaged system is investigated by means of a parametric study. The results indicate that precast walls higher than 12 stories require a ductility capacity in the vertical joints that exceeds the available performance of headed-stud mechanical connectors. Furthermore, use of vertical ties produces only marginal improvement of overall structural integrity following local panel failure, whereas prestressing could be a dangerous contributor to progressive collapse.
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