FIB BULLETIN NO. 81

Title: Punching shear of structural concrete slabs

Category: Technical Report

Year: 2017

Pages: 378

Format approx. DIN A4 (210x297 mm)

ISBN: 978-2-88394-121-2

DOI: doi.org/10.35789/fib.BULL.0081

Abstract:

fib Bulletin 81 reports the latest information available to researchers and practitioners on the analysis, design and experimental evidence of punching shear of structural concrete slabs. It follows previous efforts by the International Federation for Structural Concrete (fib) and its predecessor the Euro-International Committee for Concrete (CEB), through CEB Bulletin 168, Punching Shear in Reinforced Concrete (1985) and fibBulletin 12, Punching of structural concrete slabs (2001), and an international symposium sponsored by the punching shear subcommittee of ACI Committee 445 (Shear and Torsion) and held in Kansas City, Mo., USA, in 2005.

This bulletin contains 18 papers that were presented in three sessions as part of an international symposium held in Philadelphia, Pa., USA, on October 25, 2016. The symposium was co-organized by the punching shear sub-committee of ACI 445 and by fib Working Party 2.2.3 (Punching and Shear in Slabs) with the objectives of not only disseminating information on this important design subject but also promoting harmonization among the various design theories and treatment of key aspects of punching shear design. The papers are organized in the same order they were presented in the symposium. The symposium honored Professor Emeritus Neil M. Hawkins (University of Illinois at Urbana-Champaign, USA), whose contributions through the years in the field of punching shear of structural concrete slabs have been paramount.

The papers cover key aspects related to punching shear of structural concrete slabs under different loading conditions, the study of size effect on punching capacity of slabs, the effect of slab reinforcement ratio on the response and failure mode of slabs, without and with shear reinforcement, and its implications for the design and formulation in codes of practice, an examination of different analytical tools to predict the punching shear response of slabs, the study of the post-punching response of concrete slabs, the evaluation of design provisions in modern codes based on recent experimental evidence and new punching shear theories, and an overview of the combined efforts undertaken jointly by ACI 445 and fib WP 2.2.3 to generate test result databanks for the evaluation and calibration of punching shear design recommendations in North American and international codes of practice.

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Download the table of contents as a PDF file.

1. Shear and moment transfer at column-slab connections - doi.org/10.35789/fib.BULL.0081.Ch01
2. Size effect on punching shear strength of RC slabs with and without shear reinforcement - doi.org/10.35789/fib.BULL.0081.Ch02
3. Behavior and performance levels of reinforced concrete slab-column connections - doi.org/10.35789/fib.BULL.0081.Ch03
4. Size effect on punching shear strength: Differences and analogies with shear in one-way slabs - doi.org/10.35789/fib.BULL.0081.Ch04
5. Flexure-induced punching of concrete flat plates - doi.org/10.35789/fib.BULL.0081.Ch05
6. 3-D finite element analysis of punching shear of RC flat slabs using ABAQUS - doi.org/10.35789/fib.BULL.0081.Ch06
7. Effect of slab flexural reinforcement and depth on punching strength - doi.org/10.35789/fib.BULL.0081.Ch07
8. Review of test data for interior slab-column connections with moment transfer - doi.org/10.35789/fib.BULL.0081.Ch08
9. Maximum punching shear capacity of footings with new punching shear reinforcement elements - doi.org/10.35789/fib.BULL.0081.Ch09
10. Bridging the gap between one-way and two-way shear in slabs - doi.org/10.35789/fib.BULL.0081.Ch10
11. Punching and post-punching response of slabs - doi.org/10.35789/fib.BULL.0081.Ch11
12. The Critical Shear Crack Theory for punching design: From a mechanical model to closed-form design expressions - doi.org/10.35789/fib.BULL.0081.Ch12
13. Punching of flat slabs under reversed horizontal cyclic loading - doi.org/10.35789/fib.BULL.0081.Ch13
14. Structural robustness of concrete flat slab structures - doi.org/10.35789/fib.BULL.0081.Ch14
15. Influence of flexural continuity on punching resistance at edge columns - doi.org/10.35789/fib.BULL.0081.Ch15
16. Seismic retrofit of concrete slabs against punching shear: Testing and modelling - doi.org/10.35789/fib.BULL.0081.Ch16
17. A new method for post-installed punching shear reinforcement - doi.org/10.35789/fib.BULL.0081.Ch17
18. Punching failure of slab-column connections reinforced with headed shear studs - doi.org/10.35789/fib.BULL.0081.Ch18