Recomendaciones para diseño deconexiones de columna losa

ACI 352.1R-89
(Reapproved 2004)

Recommendations for Design of Slab-Column Connections in Monolithic Reinforced Concrete Structures
Reported by ACI-ASCE Committee 352
James K. Wight Chairman James R. Cagley* Marvin E. Criswell* Ahmad J. Durrani Mohammad R. Ehsani Luis E. Garcia Neil M. Hawkins* Norman W. Hanson Secretary Milind R. Joglekar Cary S. Kopczynski* Michael E. Kreger* Roberto T.Leon*
Donald F. Meinheit

Jack P. Moehle, Sub-Committee Chairman for Preparation of the Slab-Column Recommendations Robert Park* Clarkson W. Pinkham Mehdi Saiidi* Charles F. Scribner
Mustafa Seckin

Gene R. Stevens* Donald R. Strand S. M. Uzumeri Sudhakar P. Verma Loring A. Wyllie, Jr. Liande Zhang

Recommendations are given for determining proportions and details of monolithic, reinforcedconcrete slab-column connections. Included are recommendations regarding appropriate uses of slabcolumn connections in structures resisting gravity and lateral forces, procedures for determination of connection design forces, procedures for determination of connection strength, and reinforcement details to insure adequate strength, ductility, and structural integrity. The recommendations are basedon a review of currently available information. A commentary is provided to amplify the recommendations and identify available reference material. Design examples illustrate application of the recommendations. (Design recommendations are set in standard type. Commentary is set in italics.) Keywords: anchorage (structural); beams (supports); collapse; columns (sup
ports); concrete slabs;connections; earthquake-resistant structures; joints (junctions); lateral pressure: loads (forces); reinforced concrete; reinforcing steels; shear strength; stresses; structural design; structures.

Chapter 4-Methods of analysis for determination of connection strength, p. 6
4.1-General principles and recommendations 4.2-Connections without beams 4.3-Connections with transverse beams 4.4-Effect ofopenings 4.5-Strength of the joint

Chapter 5-Reinforcement recommendations, p. 10
5.l-Slab reinforcement for moment transfer 5.2-Recommendations for the joint 5.3-Structural integrity reinforcement 5.4-Anchorage of reinforcement

Chapter 6-References, p. 16
6.l-Recommended references 6.2-Cited references

CONTENTS Chapter 1 -Scope, p. 1 Chapter 2-Definitions and classifications, p. 22.l-Definitions 2.2-Classifications

Examples, p. 17 Notation, p. 22 CHAPTER 1-SCOPE These recommendations are for the determination of connection proportions and details that are intended to provide for adequate performance of the connection of cast-in-place reinforced concrete slab-column connections. The recommendations are written to satisfy serviceability, strength, and ductility requirementsrelated to the intended functions of the connection.

Chapter 3-Design considerations, p. 5
3.l-Connection performance 3.2-Types of actions on the connection 3.3-Determination of connection forces

ACI Committee Reports, Guides, Standard Practices, and Commentaries are intended for guidance in designing, planning, executing, or inspecting construction and in preparing specifications. Reference tothese documents shall not be made in the Project Documents. If items found in these documents are desired to be part of the Project Documents they should be phrased in mandatory language and incorporated into the Project Documents.

*Members of the slab-column subcommittee. Copyright 0 1988, American Concrete Institute. All rights reserved including rights of reproduction and use in any form ofby any means, including the making of copies by any photo process, or by any electronic or mechanical device, printed, written, or oral, or recording for sound or visual reproduction or for use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright proprietors.

352.1 R-1

352.1 R-2

MANUAL OF CONCRETE PRACTICE

Design of the...