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原文传递 Modifications to ACI 318 shear design method for prestressed concrete members: Detailed method

题名：	Modifications to ACI 318 shear design method for prestressed concrete members: Detailed method
正文语种：	eng
作者：	Hyunjin Ju;Meirzhan Yerzhanov;Deuckhang Lee;Hyeongyeop Shin;Thomas H.-K. Kang
作者单位：	Department of Architecture and Design Convergence at Hankyong National University in Anseong Korea;Department of Civil and Environmental Engineering at Nazarbayev University in Nur-Sultan Kazakhstan;Department of Architectural Engineering at Chungbuk National University in Cheongju Korea;Department of Architecture and Architectural Engineering at Seoul National University in Seoul Korea;Department of Architecture and Architectural Engineering at Seoul National University
关键词：	Detailed method; modification; prestressed concrete one-way member; shear design; shear strength
摘要：	This paper proposes modifications to the methods for shear design of prestressed concrete one-way members specified in American Concrete Institute's Building Code Requirements for Structural Concrete (ACI 318-19) and Commentary (ACI 318R-19) to increase applicability. The current ACI 318 shear design methods have been widely used and have a history of demonstrated safety and reliability. However, there are long-standing concerns re-garding the cumbersome computational procedures specified in ACI 318, as well as the inability of the ACI 318 shear design methods to capture key influential factors. This paper provides a brief history of changes made over several decades within ACI 318 for prestressed concrete shear design and critical issues raised in previous studies. While maintaining the philosophy and safety priorities of the original pioneers in the development of shear design for prestressed concrete members, the proposed changes simplify the calculation process and provide analytical accuracies comparable to the current ACI 318 methods. These changes are affirmed by comparing the results of the modified methods with data from an extensive shear database of prestressed concrete component designs that vary in dimensional detail and material properties and shear strengths estimated using current ACI 318 methods.
出版年：	2023
期刊名称：	PCI Journal
卷：	68
期：	1
页码：	60-85