[1]张卫喜,屠冰冰,赵 冬.连续倒塌过程中构件失效动力效应分析[J].西安建筑科技大学学报:自然科学版,2014,46(01):84-89.[doi:10.15986/j.1006-7930.2014.01.015]
 ZHANG Weixi,TU Bingbing,ZHAO Dong.Analysis on dynamic effect of component failure during progressive collapse[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,46(01):84-89.[doi:10.15986/j.1006-7930.2014.01.015]
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连续倒塌过程中构件失效动力效应分析()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
46
期数:
2014年01期
页码:
84-89
栏目:
出版日期:
2014-02-28

文章信息/Info

Title:
Analysis on dynamic effect of component failure during progressive collapse
文章编号:
1006-7930(2014)01-0084-06
作者:
张卫喜1屠冰冰2赵 冬1
(1 西安建筑科技大学理学院,陕西 西安 710055; 2 西安建筑科技大学土木工程学院,陕西 西安 710055)
Author(s):
ZHANG Weixi1 TU Bingbing2 ZHAO Dong1
(1. School of Science, Xi’an Univ. of Arch. & Tech., Xian 710055, China; 2. School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xian 710055, China)
关键词:
RC框架结构拆除构件法失效时间动力放大系数瞬态时程分析
Keywords:
RC frame structure alternate load path method failure time dynamic amplifying factor transient time history analysis
分类号:
TU375.4
DOI:
10.15986/j.1006-7930.2014.01.015
文献标志码:
A
摘要:
为了分析连续倒塌过程中,构件失效时间对动力放大系数的影响,采用拆除构件法,从理论上推导动力放大系数与失效时间的关系,并对一空间RC框架结构进行瞬态时程分析,得出柱子失效过程中失效点处初始位移、最大静位移和最大动位移变化特点,进而得到动力放大系数随失效时间和失效位置的变化规律,对理论结果进行补充说明.结果表明:局部构件失效时间对动力放大系数有显著影响,且二者成反比;随着失效时间增长,动力放大系数分布规律发生变化,失效时间较短时,除顶层外各层动力放大系数均为短边中柱最大,角柱最小;失效时间较长时,分布规律刚好相反.
Abstract:
Alternate Path Method was used to study the effect of component failure time on the dynamic amplifying factor during progressive collapse. First, the relationship between dynamic amplifying factors and failure times were derived from the theory. Second, the transient time history analysis was carried out on a space RC frame structure to obtain the characteristic of initial displacement, maximum static displacement and maximum dynamic displacement. The general rules of dynamic amplifying factor changing with the failure time and location, were obtained respectively. Theoretical results were complemented by the simulated ones. The results show that the local component failure time has a significant influence on the dynamic amplifying factor and there relationship turns out to be of an inverse type. The distribution of dynamic amplifying factor is found to be different from varies with the increase of failure time. When the failure time is short enough, the maximum dynamic amplifying factor occurs on the short edge middle column and the minimum one occurs on the corner column for a non topmost floor. However, the distribution of dynamic amplifying factor is just the opposite for longer failure time.

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备注/Memo

备注/Memo:
基金项目:陕西省教育厅科学研究项目(12JK0967); 陕西省自然科学基金项目(2011JQ1013)
收稿日期:2013-08-30 修改稿日期:2014-01-25
作者简介:张卫喜(1977-),男,讲师,主要从事结构分析及古建筑结构保护研究.E-mail: tubingbing9@126.com
更新日期/Last Update: 2015-10-05