Method for improving high-rise building safe evacuation scissors staircase and structure thereof

Abstract

The invention relates to a method for improving a high-rise building safe evacuation scissors staircase and a structure thereof. The invention is characterized in that one section of any two-section straight run staircases of existing scissors staircases is selected, internally folded and connected to a corresponding floor, and the folding positions of the two staircases are all designed to be rest platforms. The invention reduces the stair well face widths of the staggered staircases of the existing high-rise buildings, completely uses space heights among floors, effectively reduces the space area of public stair wells, reduces the face width of the stair wells without reducing the bearing capacity of the floor, reduces unnecessarily wasted land area, and reduces the construction cost of the high-rise building safe evacuation scissors staircases. For the invention, distance between two end openings of each floor is shorter, when fire incidents occur, persons in the building can arrive at the other end opening from one end opening in shorter time, thereby increasing valuable evacuation escaping time, enhancing the escaping opportunity of the persons on the floors, and providing better security guarantee.

Description

technical field [0001] The invention relates to a stair structure of a building, in particular to a structure which reduces the shared area and meets fire protection requirements. Background technique [0002] It is known that according to the "Code for Fire Protection Design of High-rise Civil Buildings", each fire protection zone of a high-rise building should not be less than two safety exits. The common practice is to use a scissor ladder structure. The rest platforms connected at both ends are located on two floors respectively. However, this construction method will increase the width of the stairwell, increase the slope of the stair itself, and elongate the load-bearing length. While increasing the area, the land area occupied by high-rise buildings has also been increased. And the distance between the two staircases is far away. It takes a long time to arrive at another stairway on the same floor from one stairway. After a fire accident in a high-rise building, the...

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Problems solved by technology

However, this construction method will increase the width of the stairwell, increase the slope of the stair itself, and elongate the load-bearing length. At the same time, it also increases the land area occupied by high-rise buildings.

And the distance between the two staircases is far away. It takes a long time to arrive at another stairway on the same floor from one stairway. After a fire accident in a high-rise building, the evacuation time of people in the building is longer.

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