胡海涛，  黄  鑫，  陈建伟
    （青岛腾远设计事务所有限公司，青岛 266000）

[摘要] 介绍了美国国防部在2009年出版的用于结构抗连续倒塌的设计准则UFC 2009。与以前的版本(UFC2005)相比，UFC 2009作了较大的修订，主要体现在以下几个方面：判定结构抗连续倒塌要求的方法、拉结力法、备用荷载路径法、改进的局部抗力法，分析方法。本文有助于理解UFC 2009设计准则，并期望为相关的科研选题提供参考。
[关键词] 连续倒塌；拉结力法；备用荷载路径法
中图分类号：TU312 +.3    文献标识码：A  文章编号：1002-848X( 2012) Sl-0190-03

Progress in design codes for progressive collapse design in USA
Hu Haitao, Huang Xin, Chen Jianwei
( Qingdao Tengyuan Design Institute Co., Ltd., Qingdao 266000, China)

Abstract: The code for the progressive collapse design, UFC 2009, was introduced. Compared with UFC 2005, UFC 2009 was revised greatly in the following ways: the method to define the buildings' progressive collapse requirements, tying force approach, altemate path method and enhanced local resistance. The provisions in UFC 2009 were introduced to understand UFC 2009 and provide reference for the related research.
Keywords: progressive collapse; tying force approach; altemate path method