ACI 550.5M-18 预制混凝土隔板抗震设计规范及条文说明

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Code Requirements for

the Design of Precast

Concrete Diaphragms

for Earthquake Motions

(ACI 550.5M-18) and

Commentary

Reported by Joint ACI-ASCE Committee 550

ACI 550.5M-18

An ACI Standard

Copyrighted material licensed to University of Toronto by Techstreet LLC, subscriptions.techstreet.com, downloaded on 2021-06-18 19:15:00 +0000 by University of Toronto User.

No further reproduction or distribution is permitted.

First Printing

September 2018

ISBN: 978-1-64195-027-5

Code Requirements for the Design of Precast Concrete Diaphragms for Earthquake

Motions (ACI 550.5M-18) and Commentary

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Copyrighted material licensed to University of Toronto by Techstreet LLC, subscriptions.techstreet.com, downloaded on 2021-06-18 19:15:00 +0000 by University of Toronto User.

No further reproduction or distribution is permitted.

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ACI 550.5M-18 was adopted August 13, 2018, and published September 2018.

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ACI 550.5M-18

Code Requirements for the Design of Precast

Concrete Diaphragms for Earthquake Motions

(ACI550.5M-18) and Commentary

An ACI Standard

Reported by Joint ACI-ASCE Committee 550

Larbi M. Sennour*, Chair Lance Osborne, Secretary

Suzanne Aultman

Roger J. Becker*

Te-Lin Chung

Ned M. Cleland*

Manuel Conde Fuentes

Thomas J. D’Arcy*

William K. Doughty

Semeh Ibrahim El Ashri

Alvin C. Ericson

Mostafa Mohamed Gad Alla

Harry A. Gleich

Neil M. Hawkins†

Augusto H. Holmberg

L. S. Paul Johal

Jason J. Krohn*

Emily B. Lorenz

Kenneth A. Luttrell

Vilas S. Mujumdar

Clay J. Naito*

Cliord R. Ohlwiler

Victor F. Pizano-Thomen

Charles L. Pizzano

Jose I. Restrepo*

Sami H. Rizkalla

Mario E. Rodriguez*

Joseph C. Sanders*

James Schroder

John F. Stanton

P. Jerey Wang

Cloyd E. Warnes

Michael H. Weber

*Diaphragm Subcommittee members who developed this code

†Diaphragm Subcommittee Chair

Special thanks to S. K. Ghosh and S. Nakaki for their contributions to this standard.

This standard describes code requirements for the design of precast

concrete diaphragms subject to earthquake motions where used

under the design provisions of ASCE/SEI 7-16 Section 12.10.3 and

ACI 318M. The response of precast concrete diaphragms under

earthquake motions depends primarily on the strength, stiness,

and deformation capacities of the connectors and the reinforce-

ment at joints between the precast concrete members. The seismic

forces specied in ASCE/SEI 7 for the design of precast concrete

diaphragms, their chords, and collectors in structures assigned to

Seismic Design Category (SDC) C, D, E, or F are tied to force

reduction factors specied in ASCE/SEI 7-16 Chapter 12, and to

the shear overstrength provided by the connections and the rein-

forcement at joints specied in ASCE/SEI 7-16 Chapter 14. The

shear overstrength depends on the design methodology, elastic or

ductile, used for the diaphragm and targets elastic response for

the maximum considered earthquake for shear connections regard-

less of the design option selected. The design option that can be

used depends on the assigned design category and on the span and

aspect ratio of the diaphragm. The selection of the design option is

associated with minimum requirements for the tensile deformation

capacity of the connections and the reinforcement at joints.

Keywords: connections; diaphragms; earthquake-resistant structures;

precast concrete; seismic design.

Copyrighted material licensed to University of Toronto by Techstreet LLC, subscriptions.techstreet.com, downloaded on 2021-06-18 19:15:00 +0000 by University of Toronto User.

No further reproduction or distribution is permitted.

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标签： #混凝土 #预制混凝土 #设计规范

摘要：

ACI 550.5M-18是国际上权威的预制混凝土隔板抗震设计规范，专为采用预制混凝土构件作为水平隔板或竖向抗侧力体系的结构提供系统性设计指南。本规范基于极限状态设计理念，明确了预制混凝土隔板在地震作用下的受力机理、连接节点性能要求、延性构造细节以及分析计算方法，并首次以公制单位（SI）发布，便于全球工程应用。条文说明部分深入解析了各条款背后的试验依据与工程经验，帮助设计人员理解隔板与相邻构件（如剪力墙、框架梁柱）的协同工作原则，避免因隔板平面内刚度不足或连接失效导致的结构整体倒塌风险。该标准适

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