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Design of Precast Hybrid Moment Frames Using ACI T1.2-03

机译:基于ACI T1.2-03的预制混合矩框架的设计

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The Precast Hybrid Moment Frame is a unique system which limits damage and allows for quick and efficient construction. The moment frame combines the benefits of a self-righting mechanism from prestressing tendons and ductility from mild reinforcing steel, and emulates, if not exceeds the ductility of a cast-in-place reinforced concrete special moment resisting frame. The system was developed and tested in the early 1990s, but until now, there has been no consensus document for its design. The 1997 Uniform Building Code allowed the use of precast systems to resist lateral loads, provided that testing confirmed the ductility factors used in analysis and design. However, the code gave no specifics on the testing program or the design itself. The current adopted codes in California, the 2006 International Building Code and ACI 318-05, specify a testing program developed by the ACI Innovation Task Group 1 (ACI T1.1). The initiative also developed the first prescriptive design document for the Precast Hybrid Moment Frame (ACI T1.2). Implicit in the adopted building codes is the use of ACI T1.2 for Hybrid Frame design. For clarification, the design document is explicitly referenced in ACI 318-08. This paper discusses the implementation of this consensus design document for the Precast Hybrid Moment Frame.
机译:预制混合力矩框架是一个独特的系统,可限制损坏并允许快速有效的施工。弯矩框架结合了预应力筋的自校直机制和低碳钢的延展性的优点,并且可以模拟(如果不超过)现浇钢筋混凝土特殊抗弯框架的延展性。该系统是在1990年代初开发和测试的,但是直到现在,还没有关于其设计的共识性文件。 1997年的《统一建筑规范》允许使用预制系统抵抗侧向载荷,前提是测试能够确认分析和设计中使用的延性因子。但是,该代码未提供有关测试程序或设计本身的详细信息。加利福尼亚州当前采用的规范,2006年国际建筑规范和ACI 318-05,指定了由ACI创新任务组1(ACI T1.1)开发的测试程序。该计划还为预制混合力矩框架(ACI T1.2)开发了第一个说明性设计文件。所采用的建筑规范中暗含的是将ACI T1.2用于混合框架设计。为了澄清起见,ACI 318-08中明确引用了设计文档。本文讨论了预制混合矩框架的共识设计文档的实现。

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