摘要
地震作用是影响结构连续倒塌的重要因素,首先分析了地震作用的特点,比较了抗震设计和抗连续倒塌设计的要求及方法,进而为考虑抗震设防烈度对结构抗连续倒塌能力的影响,建立了非抗震和抗震设防烈度分别为6度(0.05g)、7度(0.1g)、8度(0.2g)的4个典型四层框架,依据GSA准则采用静力线性方法分析了结构在底层柱破坏下的抗连续倒塌能力。计算结果表明,6度和7度抗震设防结构抗连续倒塌能力相对非抗震结构提高不大,8度设防结构的抗连续倒塌能力较好。
Earthquake action is an important factor that affects structural progressive collapse, first, the char acteristics of the earthquake action are analyzed, the seismic design and collapseresistance design are compared, in order to consider the effect of seismic intensity on the structure, nonseismic and seismic intensity of 6 （0. 05 g）, 7（0. 1 g）, 8 （0.2 g） of four typical fourlayer frameworks were established. According to GSA guidelines, using the linear static analysis the frameworks＇ collapseresistance capacity were analyzed. The results show the collapse capacity of 6 and 7 degree improved less than nonseismic structure ; the collapse capacity of 8 degree is better.
出处
《科学技术与工程》
北大核心
2012年第28期7439-7442,7448,共5页
Science Technology and Engineering
关键词
地震作用
抗震设计
抗连续倒塌
earthquake action seismic design progressive collapse-resistance
