Verification of Three-Dimensional Grid Strut-and-Tie Model Approach in Structural Concrete

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Title: Verification of Three-Dimensional Grid Strut-and-Tie Model Approach in Structural Concrete

Author(s): Young Mook Yun, Hyun Soo Chae, Byunghun Kim, and Julio A. Ramirez

Publication: Structural Journal

Volume: 115

Issue: 1

Appears on pages(s): 27-40

Keywords: grid strut-and-tie model; pier cap; pile cap; slab-column joint; torsional beam

Date: 1/1/2018

Abstract:
In this study, a proposed three-dimensional (3-D) grid strut-and-tie model approach is verified using the experimental capacity from 78 reinforced concrete pile caps, 19 slab-column joints, and 60 torsional beams obtained by others. The analysis results were compared with those obtained using the BS 8110, EC2, CRSI, fib, AASHTO-LRFD, and ACI 318 design provisions. In addition, the design of a pier cap subjected to multiple load combinations with longitudinal and lateral loads was conducted to illustrate the proposed approach. The design results from the pier cap example were also compared with those obtained using ACI 318-14. The analysis results agreed well with experimental results.