JP2779655B2 - Fire protection wall structure in underground living space - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a fire-prevention partition wall structure that prevents fire from spreading in an underground fire and facilitates evacuation.

(Prior art) The biggest difference between a fire in an underground space and a fire in a general building on the ground is that the flow of hot wind and smoke generated by the fire is in the same ground direction as the direction in which people evacuate. is there.

The conventional fire compartment wall is only provided at a required place in the living space on the same level surface to prevent the spread of fire at the end.

(Problems to be Solved by the Invention) Therefore, even if a fire barrier similar to the conventional one is provided in the underground living space or it is effective in preventing fire spread, people, especially physically handicapped persons and elderly people, are evacuated. When doing so, it is not enough to protect against smoke.

The present invention has been proposed in view of such circumstances,
An object of the present invention is to provide a fire-prevention partition wall structure in an underground living space in which a fire is prevented from spreading and an evacuation is easy in case of an underground fire.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the fire prevention partition wall structure in the underground living section according to the present invention is provided at the lower part of the fire protection partition wall defining the underground living space, on both sides of the partition wall. A pit extending over the pit is disposed so as to be able to move under the pit between two adjacent space sections defined by the fire prevention partition wall.

(Action) When a fire occurs in the underground living space, the hot air and smoke generated by the fire first flow to the ceiling and upper layers and go to the ground, but if the flow is obstructed by doors etc., it gradually descends to the floor. come.

Therefore, it is the last time that the area near the floor is affected by smoke, and it generally takes several minutes after the fire starts.

During this time, a person in the living room where the fire broke out bent down into a pit provided so as to extend from one side of the fire prevention partition wall to the lower part of the partition wall so as to extend over both sides thereof,
By sneaking into the space on the other side of the fire protection partition wall from the pit, it is possible to quickly evacuate to another underground space on the same floor without being caught in smoke.

(Example) Hereinafter, the present invention will be described with reference to an illustrated example.

(1) is an underground living space, in which a fire protection partition (2) that partitions the space (1) is provided, and under the partition (2),
Both spaces (3) adjacent to each other with the partition wall (2) as a boundary
A pit (5) extending over (4) is provided, and a lid (6) is detachably mounted on an opening of the pit (5).

The pit (5) may be in the form of a manhole, or the space (3) (4) may communicate with the bottom of the pit (5) via a ramp or stair (7). In the figure, (9) is a handrail, and (8) is a door disposed immediately below the fire protection partition wall (2) in the pit (5).

In the pit (5), an opening of the pit (5) below the fire protection partition wall (2) may be provided with a fire and smoke prevention door as required. When the scale is small, a lid like an escalator shutter is provided as an upper lid on the pit (5). Even if the smoke resistance of the lid is not so high, there is generally no problem because the airflow in the fire chamber goes from the floor surface to the ceiling surface. In addition, such a pit (5) is advantageously provided at the corner of the fire prevention section from the viewpoint of human evacuation.

Since the illustrated embodiment is configured as described above,
When a fire occurs in the underground living space, a person in the fire generating space (3) passes through the pit (5) and enters the space (4) adjacent to the space (3) via the fire protection partition wall (2). Evacuate immediately.

(Effects of the Invention) According to the present invention, as described above, a pit extending over both sides of the partition wall is provided below the fire protection partition wall that partitions the underground living space into two or more living rooms. By being configured to be able to move between two living rooms partitioned by the fire protection partition wall under a pit, at least two
When a fire occurs in an underground space having one or more living rooms, the potential person can quickly evacuate to another underground space on the same floor without being caught in smoke. Evacuation can be performed without direct concentration, and evacuation can be performed for each fire compartment.

Furthermore, it is possible to give the underground space user a sense of security that she can evacuate to the ground.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a fire protection partition wall structure in an underground living space according to the present invention, and FIGS. 2 and 3 are views taken along a line AA in FIG. FIG. (1) Underground living space, (2) Fire barrier, (3) (4) Space, (5) Pit, (7) Ramp or stairs.

Claims (1)

(57) [Claims] A pit extending over both sides of the partition wall is provided below the fire partition wall that defines the underground living space, and two adjacent spaces partitioned by the fire partition wall below the pit. A fire protection partition wall structure in an underground living space, which is configured to be movable between the sections.