DISTRIBUTING OF TEMPERATURE IS IN LOWER RING OF SHED OVER TRIBUNES OF STADIUM NSC «OLIMPIYSKIY» IN THE CONDITIONS OF DANGEROUS SCENARIO OF FIRE PROCESS

Abstract

over tribunes of stadium NSС «Olimpiyskiy» is revealed. The estimation of consequences of the most active scenario of fire process was fulfilled. Dependence of heating of nodal points of lower power ring from closeness to the hearth of ignition is set.

Necessary calculations were executed in accordance with technical regulation and documents on designing.

The got graphic materials and indications of technical character are analyzed.

Special attention was spared to the consideration of dangerous localized thermal influence at the third scenario of the fire process.

It is accepted, that in the process of competitions the offensive of situation is possible with appearance of hearth of fire on a tribune.

The case of localization of fire near-by one column with the subsequent distributing of temperature on the elements of lower power ring was considered. Such approach allowed to get the suitable margin of safety of the system, as a local influence of heating quick conduces to destruction.

The most active from three scenarios of fire process, which can be accompanied of intensive by processes of burning, was considered. Namely from him the horizontally located elements are strongly subject to thermal influence.

In obedience to the set situation of calculation in accordance with the third scenario of thermal process an object near a column catches fire and continues to burn during time of influence of fire at a complete absence of wind from the side of the football field.

The got curves reflected the change of temperature in all nodal points of lower power ring. The found values proved acceptable and very distant from their limited indexes.