1.2 investigation and analysis of fire accident in Harbin warehouse

Most warehouses are mainly frame structures, with limited fire-resistant time of columns and large span of beams. It is difficult for reinforced concrete beam-column members to support the huge load on the upper part after long-term combustion. The burning building is a "unfinished building" with simple load-bearing structure. The burning time is too long and the fire resistance limit of the floor is too low. In addition, because of drawing water, alternating hot and cold may lead to loose concrete inside, so the whole building will collapse inside. The fire escape is very crowded.

At the scene of the fire, several entrances and exits that were supposed to be fire exits became shops. After the fire truck arrived at the scene, it tried to enter the fire scene in the hospital from the fire escape for rescue, but it didn't find the entrance after several turns, so it could only wander outside the building and watch the fire spread.

Flammable materials piled up like mountains.

At first, the fire was only an area of nearly 1,000 square meters. However, because most of the flammable items stored in the warehouse are paper, plastic and so on, firefighters don't know enough about the storage situation of the items and the structure of the community, which leads to the state that even the camp is burned down.

Mixed production, storage and residence

In the Harbin fire, the burning building is still a low-quality building integrating production, storage and residence. However, for many years, law enforcement departments have not inspected fire safety, nor have they received rectification requirements or penalties.

When the temperature is low at night, water sprayed on the roof will freeze.

On the night of 20 15 1.2, the weather temperature in Harbin was about-10 degrees, which caused great trouble. The water from the fire hydrant sprayed over and soon became ice.