The calculating the progressive collapse problem in the light of the existing regulatory framework of the Russian Federation

摘要

It has become increasingly important to consider emergency situations having a low occurrence probability and short duration and being important from the point of view of the reaching the limiting conditions consequences that may arise in such situations,in recent time,when designing industrial and civil engineering facilities.An example of such emergency is one of the supporting building structures failure,which can lead to its progressive(avalanchelike)collapse.At the same time,one of the main problems in this situation until recently was that until 2018-2019 there was no single regulatory document in the Russian Federation regulating both the actual calculation for progressive collapse and the criteria according to which the structures can be considered stable or unstable to progressive collapse.