CN201305962Y

CN201305962Y - Improved structure of a high building safe evacuation scissors staircase

Info

Publication number: CN201305962Y
Application number: CNU2009200391279U
Authority: CN
Inventors: 尤建霞
Original assignee: Individual
Current assignee: Kowloon Sky Group Ltd
Priority date: 2009-04-29
Filing date: 2009-04-29
Publication date: 2009-09-09
Anticipated expiration: 2019-04-29

Abstract

The utility model relates to an improved structure of a high building safe evacuation scissors staircase, which is characterized in that the scissors staircase is provided with a cross-type scissors staircase and a rest platform, wherein, the rest platform is arranged between two adjacent floors, and a steering staircase which leads to the upper and the lower floor and the scissors staircase are connected with the rest platform, and the steering staircase is bent inwards corresponding to the scissors staircase. The improved structure reduces the width of the stairway of the prior high building cross-type scissors staircase, and makes full use of the height of the floor, and effectively reduces the public stair way area, and reduces the stairway width; moreover, the load bearing capacity of the floor is not reduced, but the unnecessary land area waste is reduced, and the building cost is reduced. The distance between two end openings of each staircase is shorter; when the safety firefighting accident happens, people inside the building can escape from one opening to the next opening in a short time, thereby increasing the valuable safe evacuation time, and increasing the escaping opportunity of the people inside the building, and providing better safety guarantee.

Description

A kind of improvement structure of high-rise building safe evacuation scissors staircase

Technical field

The utility model relates to a kind of staircase structure of building, specifically a kind ofly reduces the structure that shared area reaches the fire-fighting requirement.

Background technology

Known basis " Code for fire protection design of high rise buildings " requires should not be less than two emergency exits about each fire district of highrise building, common way is to adopt scissors ladder structure, the two ends of twice stair are respectively the stair activity mouth, and the half space that scissors ladder two ends connect is in two floor faces respectively.Yet this make can make staircase face width lengthening, it is big that stair self gradient becomes, loaded length is elongated, increased the stiffness of concrete structure, make building costs improve, the shared area that also extends one's service has simultaneously also increased the shared land area of highrise building when reducing the dwelling house usable floor area.And this two stair downstairs mouthful between distance far away, as want to arrive the time that need grow with another ladder way of going downstairs of layer from a stair mouth, the egress time that personnel need in the building after high building generation fire-fighting accident is longer.

Summary of the invention

The purpose of this utility model is exactly, a series of deficiencies such as staircase face width long, self gradient big long at above-mentioned existing highrise building scissor-ladder-type safe escape stair loaded length, provide a kind of make full use of the floor gap height, effectively reduce public staircase area, reduce the improvement structure of the high-rise building safe evacuation scissors staircase of staircase face width.

The technical solution of the utility model is as follows:

A kind of improvement structure of high-rise building safe evacuation scissors staircase, it is characterized in that including the scissors ladder and the half space of staggered form, half space is between two adjacent floors, the turn to stair and the scissors ladder of two floors all are connected to half space about leading to respectively, turn to stair with respect to the terraced invagination of scissors.

The described ground projection angle that turns to stair and scissors ladder is 90 degree, forms L type stair.

The beneficial effects of the utility model have:

When satisfied " Code for fire protection design of high rise buildings " requires, reduced the staircase face width of present highrise building staggered form scissors ladder, made full use of the floor gap height, effectively reduce public staircase area, reduce the staircase face width, the bearing capacity of floor does not reduce, and has reduced the slope of stairs, reduce unnecessary land area waste, also reduced the building costs of high-rise building safe evacuation stair simultaneously.And compare with original straight race formula scissors ladder, the utility model make every floor ladder two end openings between distance shorten, promptly when safe fire-fighting accident takes place, personnel in the building can spend the shorter time to arrive another ladder way of going downstairs from the ladder way of going downstairs, so just increased and protected expensive evacuation escape time, strengthened floor personnel's escape chance, better safety guarantee is provided.

Description of drawings

Fig. 1 is the plane structure schematic diagram of the utility model staggered floor L type safety stair.

Fig. 2 is the plane structure schematic diagram at the attic place of the utility model staggered floor L type safety stair

Fig. 3 is existing straight race formula scissors ladder plane structure schematic diagram.

Fig. 4 is existing straight race formula scissors ladder perspective view.

The specific embodiment

The utility model is further described below in conjunction with accompanying drawing:

The utility model has made full use of the floor height of floor gap, is connected to corresponding floor after two sections straight race formula stair of existing scissors ladder are all chosen a flight of stairs invagination, and the place of being folded to of two stair all is arranged to half space.As shown in Figure 1, the part stair of described two sections stair invaginations (promptly turning to stair 2) become 90 degree with part stair (being scissors ladder 1) the ground projection angle of not rolling over, form L type stair.The utility model is equivalent to split into two sections stair with directly running formula scissors ladder, and one section is scissors ladder 1, and another section realizes leading to a last floor for turning to stair 2 by turning to stair 2.Since turn to stair 2 mark time and the half space 3 at stair mouth place, scissors ladder 1 two ends is in same wide of building, so neither can take more half space space, also realized reducing the purpose of building floor space.Turn to the length of stair 2 and the height of half space 3 to decide according to the actual needs of building.

In Fig. 1, there are two to turn to stair 2 can lead to half space 3 between floor 4 and next floor from floor 4, again from the scissors of two intersections ladder 1 time to next floor, so just both satisfied the regulation that should not be less than two emergency exits about each fire district of highrise building, the loaded length of stair is shortened, reduced the stiffness requirement of stair, reduced building costs concrete structure.

As shown in Figure 2, can also establish on the half space 3 of attic of the present utility model and next floor gap more two logical scissors ladders 1 of living attic ', be equivalent to like this attic floor 4 have four can following emergency exit to half space 3 between attic and next floor, can further ensure attic personnel's safe escape requirement.

The foregoing description only is a kind of preferred version of the present utility model, under design of the present utility model, can be out of shape arbitrarily, as turn to stair 2 also can not form vertical L type with scissors ladder 1, but form arbitrarily angled, or the part that is folded to is a scissors ladder 1, as long as turn to platform 3 to be between two floors, by scissors ladder 1 with turn to being folded to of stair 2, all can reach the purpose that reduces the staircase face width.Other undeclared part that the utility model relates to is same as the prior art.

Claims

1, a kind of improvement structure of high-rise building safe evacuation scissors staircase, it is characterized in that including the scissors ladder and the half space of staggered form, half space is between two adjacent floors, the turn to stair and the scissors ladder of two floors all are connected to half space about leading to respectively, turn to stair with respect to the terraced invagination of scissors.

2, the improvement structure of a kind of high-rise building safe evacuation scissors staircase according to claim 1 is characterized in that the described ground projection angle that turns to stair and scissors ladder is 90 degree, forms L type stair.