【作者】 张波； 邓长根；

【Author】 ZHANG Bo DENG Changgen(Department of Building Engineering,Tongji University,Shanghai 200092)

【机构】 同济大学建筑工程系；

【摘要】 近年来,大型复杂建筑均要求进行抗连续倒塌设计。为了理解各设计方法的特点,本文主要对拉结力设计法、移除构件法,包括线弹性静力法、非线性静力法和动力时程法进行了总结和比较。并结合国外学者运用不同方法所作的研究工作,阐述了各方法的优缺点。本文还重点分析了现有设计方法的不足,如拉结力设计法不够完善、动力放大系数偏保守和未考虑楼板有利作用等。最后指出设计人员在进行设计时,要对所采用方法的准确性认真评判。更多还原

【Abstract】 In these years,large and complex buildings need to be designed against progressive collapse.In order to understand features of different methods,the tie force method and alternate path method(including linear static method,non-linear static and dynamic time-history method) are summarized and compared.With examples of domestic and foreign studies,the advantages and disadvantages of each method are presented.The deficiencies of the existing design methods are particularly summarized.For example,foreign tie force method is not perfect;the dynamic magnification factor is conservative;and the contribution of floor slabs is neglected.At last,it is suggested that designers need to validate the results from different methods carefully.更多还原