梁云明
LIANG Yun-ming (Beijing Institute of Technology,Beijing 100081, China)

• 1:北京理工大学 北京100081

摘要(Abstract)：

世贸中心大楼被飞机撞击后燃起大火 ,梁和柱在高温下蠕变 ,受力状态发生改变 ,形成局部软腰 ,以致原地塌落。两幢高楼坍塌的实例 ,提供了拆除高楼的新思路。对于钢筋混凝土高楼 ,只需在梁和柱的连接处以及梁的中部钻孔爆破 ,即可实现原地塌落。
The World Trade Twin Mansions dashed by planes caught a terrible fire The change of beam-and-column stressing took place because of their creep at high temperature,“soft waist”being formed,so that the Mansions collapsed On basis of this example,a new opinion on blasting demolition of highrises is presented The in-situ collapsing of a reinforced concrete highrise can be realized as long as beam-and-column joints and the middle of beams are disrupted by drilling-and-blasting method

关键词(KeyWords)： 世贸大楼;受力分析;拆除爆破;原地塌落
World Trade Twin Mansions;Stressing analysis; Demolition blasting;In-situ collapsing

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作者(Author): 梁云明
LIANG Yun-ming (Beijing Institute of Technology,Beijing 100081, China)

参考文献(References)：

• 〔1〕丁宝忠美研究人员分析世贸中心倒塌原因[N]北京晨报,2003-02-25
• 〔2〕明金维世贸中心双塔倒塌原因有新说[N]北京晨报,2003-06-06
• 〔3〕杨振宁杨振宁文集 [M]上海:华东师范大学出版社,1998