VALIDATION OF AN ALTERNATIVE REINFORCING DETAIL FOR THE DAPPED ENDS OF PRESTRESSED DOUBLE TEES
VALIDATION OF AN ALTERNATIVE REINFORCING DETAIL FOR THE DAPPED ENDS OF PRESTRESSED DOUBLE TEES
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验证预应力双 T 形件缺口端的替代加固细节
DOI：
10.15554/pcij.01012002.38.49
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发表时间：
2002
期刊：
影响因子：
1.1
通讯作者：
Pei Huang
中科院分区：
文献类型：
--
作者：
A. Nanni;Pei Huang
为了提供一种高效、经济的施工体系，预应力混凝土搭接梁已被广泛应用于建筑物和停车场结构中。节点梁的伸缩角产生了严重的应力集中，这使其成为连接的最薄弱环节。如果在该位置没有提供适当的钢筋，斜拉裂纹可能会迅速扩展，并且可能在很少或没有警告的情况下发生破坏。加固方案和相关的设计方法已经开发出来，它们结合了应用的简单性和制造的经济性，并提供了现行建筑规范所要求的安全裕度。本文介绍了一种满足《PCL设计手册》第五版规定的设计方法要求的预应力双T形三通扣端补强方案的试验验证。
Prestressed concrete (PC) dapped-end beams have been used in buildings and parking structures to provide an efficient and economical construction system. The re-entrant corner of a dapped-end beam develops a severe stress concentration, which makes it the weakest point of the connection. If suitable reinforcement is not provided at this location, diagonal tension cracks may propagate rapidly and failure may occur with little or no warning. Reinforcing schemes and associated methods of design, which combine simplicity of application with economy of fabrication and provide the margin of safety required by present building codes, have been developed. This paper describes the experimental validation of an alternative reinforcing detail for the dapped ends of prestressed double tees, which satisfies the requirements of the design method contained in the PCl Design Handbook, Fifth Edition.