Response of Prestressed Concrete Elements to In-Plane Shear Forces

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Title: Response of Prestressed Concrete Elements to In-Plane Shear Forces

Author(s): Peter MartiI and JoostT Meyboom

Publication: Structural Journal

Volume: 89

Issue: 5

Appears on pages(s): 503-514

Keywords: deformation; loads (forces); prestressed concrete; shear strength; reinforced concrete; structural design; tests; Structural Research.

Date: 9/1/1992

Abstract:
Results of in-plane shear tests on three orthogonally reinforced concrete plate elements are presented and compared with response predictions according to linear, nonlinear, and limit analysis approaches. The three specimens were identical except for the reinforcements in one direction. In this direction, one specimen was nonprestressed while its two companion specimens were partially prestressed to various degrees. It is shown that prestressing delays cracking, reduces the reorientation of the internal forces after cracking, and allows higher ultimate loads to be reached. It is also shown that if linear analysis is used to predict service load responses and ultimate conditions, a close approximation to experimental observations is obtained. A more complex, nonlinear analysis also closely approximates experimental observations.