Title: Shear Database for Reinforced Concrete Members without Shear Reinforcement

Author(s): Karl-Heinz Reineck, Daniel A. Kuchma, Kang Su Kim, and Sina Marx

Publication: Structural Journal

Volume: 100

Issue: 2

Appears on pages(s): 240-249

Keywords: reinforced concrete; shear strength; test

DOI: 10.14359/12488

Date: 3/1/2003

Abstract:
While thousands of experiments have been conducted to assess the shear capacity of structural concrete members, code provisions are usually developed from a limited and somewhat arbitrary subset of these test results. To address this problem, a qualified database of shear test results was created. All beams in this database have a rectangular cross section, do not contain shear reinforcement, and were subjected to point loads. A sanctioned set of criteria was then developed for accepting a test result into an evaluation-level database. Examples of these criteria include a minimum compressive strength, a minimum overall height and width, and a check against flexural failure. An examination was then conducted to assess the influence of key parameters on the model safety factor gmod = (Vtest /Vcode) for ACI 318-99 Eq. (11-3) and (11-6). This revealed that current ACI provisions do not adequately capture many trends and become increasingly unsafe as members become larger and more lightly reinforced.