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原文传递 The legacy and future of an American icon: The precast, prestressed concrete double tee

题名：	The legacy and future of an American icon: The precast, prestressed concrete double tee
其他题名：	1.PCI.2003."Developing Our Technology and Marketing Our Advantages:Highlights of PCI's 49th Annual Convention&Exhibition,PCI/FHWA International Symposium on High Performance Concrete,and PCI National Bridge Conference,Orlando,Florida,October 19-22,2003."PCI Journal 48(6):14-30.
正文语种：	英文
作者：	George D. Nasser
关键词：	High-strength concrete;history;large-diameter strand;research;self-consolidating concrete;double tee;northeast extreme tee;parking structure;pi girder
摘要：	This paper traces the origin and development of the double tee, emphasizing the influence it has had on the precast, prestressed concrete industry. It reviews the advantages and diverse applications of double tees, primarily in North America. The major features of the double tee are discussed, especially in relation to parking structures. The paper summarizes the results of selected studies conducted at several universities. It discusses the northeast extreme tee (NEXT), the 16 ft (4.8 m) wide Mega-Tee, and the bulb double tee. Examples of future possibilities of double tees using high-strength concrete, self-consolidating concrete, and large-diameter prestressing strands are explored. It is concluded that the future of the double tee, with all its enhancements and ongoing research, is promising.
出版年：	2015
论文唯一标识：	J-30Y2015V60N04037
英文栏目名称：	Parking Structures
期刊名称：	PCI-Prestressed Concrete Institute Journal
拼音刊名(出版物代码)：	J-30
卷：	60
期：	04
页码：	49-68