Аннотації

Автор(и):
Перельмутер А.В.
Автор(и) (англ)
Perelmuter A.V.
Дата публікації:

14.09.2023

Анотація (укр):

Робота присвячена аналізу одного з можливих граничних станів, для котрого сценарієм є обвалення перекриття над віддаленою колоною, внаслідок чого виникає загальне обвалення типу «шаровий пиріг» (рancake-type collapse). Пропонується наближена методика оцінки прогресуючого обвалення залізобетонної плити перекриття багатоповерхового будинку, що отримає удар падаючих уламків конструкцій, які вийшли зі строю. У підгунті методики лежить динамічний аналіз спрощеної модулі руху, форма котрого приймається подібною до такої, що використовується в теорії граничної рівноваги. Припускається, що пружна робота плити мало впливає на кінцеве значення деформації, котрі виникають у влиті у формі лінійних пластичних шарнірів. Частка кінетичної енергії падаючих уламків передається плиті, яка отримує удар, знаходиться теоретично як у класичному випадку повність пластичного удару. Одержане диференційне рівняння руху інтегрується у замкненій формі Використання методики, що пропонується, демонструється за допомогою ілюстритивного прикладу.

Анотація (рус):

Анотація (англ):

The work is devoted to the analysis of one of the possible limit states, for which the scenario is the collapse of the floor over a remote column, as a result of which a general collapse of the rancake-type collapse occurs. An approximate method of assessing the progressive collapse of a reinforced concrete floor slab of a multi-story building, which will receive an impact from falling fragments of failed structures, is proposed. The technique's underpinning is the dynamic analysis of a simplified module of motion, the form of which is assumed to be similar to that used in the theory of limit equilibrium. It is assumed that the elastic work of the plate has little effect on the final value of the deformation that occurs in the casting in the form of linear plastic hinges. Part of the kinetic energy of the falling debris is transferred to the plate that receives the impact, it is theoretically as in the classical case the completeness of the plastic impact. The resulting differential equation of motion is integrated in a closed form. The use of the proposed technique is demonstrated with the help of an illustrative example.

Література:

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