ACI 215 2021

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ACI PRC-215-21: Concrete Structure Design for Fatigue Loading—Report

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ACI	2021

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Description

Fatigue is a mechanical degradation process caused by repeated loads, such as traffic loading or wind loads on a bridge, that results in irreversible damage in concrete structures. Many types of concrete elements are subjected to repeated loads, such as airport and roadway pavements, bridge girders, bridge decks, wind turbines, and prestressed concrete railroad ties. This document provides information that will benefit practicing engineers interested in the design or rehabilitation of concrete structures subjected to high-cycle fatigue—that is, stress cycles in which the material behavior remains within the elastic range. The effects of repeated loads on plain concrete, reinforcing materials, and reinforced concrete systems are discussed based on a summary of available literature. This report does not contain detailed design procedures but rather should be considered a general resource providing a comprehensive overview of fatigue issues in reinforced concrete structures. Keywords: design; fabric-reinforced cementitious matrix; fatigue; fiber-reinforced concrete; fiber-reinforced polymers; prestressed concrete; rehabilitation; reinforced concrete; reinforcing materials; service life.

PDF Catalog

PDF Pages	PDF Title
4	CHAPTER 1—INTRODUCTION AND SCOPE 1.1—Introduction
5	1.2—Scope CHAPTER 2—NOTATION AND DEFINITIONS 2.1—Notation
6	2.2—Definitions CHAPTER 3—PLAIN CONCRETE 3.1—Scope 3.2—General 3.3—Fatigue as a degenerative process
8	3.4—Fatigue life models 3.5—Important parameters
11	CHAPTER 4—REINFORCING MATERIALS 4.1—Scope 4.2—Fatigue of steel
16	4.3—Fatigue of fiber-reinforced polymer composites
18	CHAPTER 5—CONCRETE REINFORCED WITH BARS 5.1—Scope 5.2—Concrete reinforced with steel bars
20	5.3—Concrete reinforced with FRP bars CHAPTER 6—CONCRETE REINFORCED WITH PRESTRESSING REINFORCEMENT
21	6.1—General 6.2—Definitions 6.3—Fatigue of fully prestressed concrete
22	6.4—Fatigue of partially prestressed concrete
24	6.5—Fatigue serviceability aspects
25	CHAPTER 7—CONCRETE REINFORCED WITH DISCRETE FIBERS 7.1—Scope 7.2—General
26	7.3—Fiber types CHAPTER 8—CONCRETE REINFORCED WITH EXTERNAL SHEETS OR LAMINATES
27	8.1—Scope 8.2—Steel-reinforced concrete strengthened with external FRP materials
28	8.3—Fatigue of adhesive systems for externally bonded FRP
29	8.4—Steel-reinforced concrete strengthened with external FRCM materials CHAPTER 9—REFERENCES
30	Authored references