CN211369307U - Fire-fighting stair without building enclosure on roof - Google Patents

Abstract

The utility model provides a building envelope's fire stair is not had on roof belongs to civil building design technical field. The utility model discloses a set up a platform in the stair section on high-rise building top layer floor to roof, divide into two sections with stair. The stair section of the top floor, which leads to the platform, is provided with an enclosure structure for sealing, the stair section of the platform, which leads to the roof, is not provided with a top cover (open air), the two sections of stairs are separated by a safety door which is vertical to the direction of the stairs, and then the waterproof design is carried out on the stair section in the open air. Therefore, the fire-fighting staircase safety channel which directly reaches the roof is reserved while the enclosure structure (staircase) of the exit of the fire-fighting safety channel on the roof is cancelled, the fire-fighting design specification and the rain-proof and anti-theft requirements are met, the space in the planning control height is fully utilized, and the land utilization efficiency is improved.

Description

Fire-fighting stair without building enclosure on roof

Technical Field

The utility model belongs to the technical field of civil building design, mainly relate to a fire control stair suitable for high-rise building leads to roof.

Background

In recent years, with the progress of urbanization and the continuous decrease of land supply for urban construction, the demand of urban construction for the use of the above-ground space has been increasing.

Unified standards for civil building design (GB 50352 and 2019)4.5.1, clauses 3, 4 and 4.5.2, clause 1: the method is used for implementing clearance height control on buildings in control ranges of airports, radio stations, telecommunication, microwave communication, weather stations, satellite ground stations, military key-plug projects, historical cultural blocks, city names, town names and villages, historical cultural blocks, cultural units, historical buildings, scenic spots and natural protection areas.

The residential design code GB 50096-2011 6.2.7 specifies residential buildings with ten and more floors, except for the two cases specified in the clauses, where the stairs of each residential unit should be connected to the roof.

Therefore, when planning high-rise buildings in technical operation control areas such as airports, radio stations, telecommunications, microwave communication, weather stations, satellite ground stations, military essential engineering, scenic spots, natural conservation areas and the like, no buildings are allowed above the planning control elevation. However, as the fire design specification requires that a high-rise building must be provided with a stair channel leading to a roof, and as the rain-proof or anti-theft requirement requires that the stair channel must be used as an enclosure (a staircase), the net height of the staircase should not be less than 2.0m according to the specification of civil building design unified standard (GB 50352 and 2019)6.8.6, as shown in FIG. 1. Therefore, in order to make the building height not exceed the planned control height, the main building must be reduced by one floor, so that the space in the planned control height cannot be fully utilized. The utilization efficiency of the land is reduced.

Disclosure of Invention

In order to achieve the above object, the utility model discloses a technical scheme is: a platform is arranged in a stair section from the top floor to the roof of a high-rise building, the stair is divided into two sections, a building enclosure structure is arranged on the stair with the top floor leading to the platform for sealing (the height of a top cover does not exceed the programming control height), the stair section with the platform leading to the roof is not provided with the top cover (open air), and the two sections of stair are separated through a safety door vertical to the stair direction.

In order to prevent rainwater from entering the stairs through the open stairs and the platforms, the design is as follows:

1 set up waterproof bank in open-air stair's roof exit, prevent that roofing rainwater from getting into open-air stair.

2 set up waterproof threshold in platform emergency exit department, prevent that open-air stair's rainwater from getting into and sealing the elevator.

And 3, finding a slope on the open platform, arranging a rainwater collecting port, collecting rainwater and discharging the rainwater into a rainwater downpipe.

4 the open-air stairs and the surrounding walls are designed to be waterproof, energy-saving and warm-keeping along with the single design.

The utility model has the effects that: at first, for traditional stair, the utility model discloses cancelled the fire control stair envelope (staircase) on outstanding roof, kept the fire control stair escape way on direct roof simultaneously, both satisfied fire control design standard and rain-proof, theftproof requirement, make full use of again plans the high inner space of control, has improved land utilization efficiency.

Drawings

Fig. 1 is an elevation view of a conventional building with a roof enclosure (stairwell) in the same planning area.

Fig. 2 is a view of the same planning area of a building without a building envelope (staircase).

Figure 3 is a plan view of the fire staircase without the roof envelope (staircase) of the present invention.

In the figure: 1. a staircase; 1-1, the top floor is communicated with the stairs of the platform; 1-2, the platform is communicated with the stairs on the roof; 2. a platform; 3. a safety door; 4. waterproof ridges; 5. a rainwater collection port; 6. and a top cover.

Detailed Description

As shown in fig. 2 and 3, a platform 2 is arranged in a stair 1 section from the top floor to the roof of a high-rise building, the stair 1 is divided into two sections, a building enclosure is arranged on the stair 1-1 leading to the platform from the top floor for sealing, the building enclosure is a top cover 6 (the height of the top cover does not exceed the programmed control height), the top cover is not arranged on the stair 1-2 section leading to the roof from the platform (the open air), and the two sections of stairs are separated by a safety door 3 vertical to the direction of the stairs.

In order to prevent rainwater from entering the stairs through the open stairs and the platforms, the design is as follows:

1, arranging a waterproof ridge 4 at a roof outlet of the open-air stairs to prevent roof rainwater from entering the open-air stairs;

2, arranging a waterproof threshold at the platform safety door to prevent rainwater on the open-air stairs from entering the closed elevator;

3, finding a slope on the open platform, arranging a rainwater collecting port 5, collecting rainwater and discharging the rainwater into a rainwater downpipe;

4 the open-air stairs and the surrounding walls are designed to be waterproof, energy-saving and warm-keeping along with the single design.

Claims (1)

1. The utility model provides a fire control stair of envelope is not had on roof which characterized in that: on the high-rise building that must design the stair passageway to the roof according to the fire control design code requirement, do not design the envelope of outstanding roofing: the staircase is divided into two sections, the staircase section from the top floor to the platform is provided with a top cover for sealing, the height of the top cover does not exceed the planning control height, the staircase section from the platform to the roof is an open-air staircase which is not provided with the top cover so as to be open-air, and the two sections of staircases are separated by a safety door vertical to the staircase direction, so that the fire-fighting design specification and the rain-proof and anti-theft requirements are met;

the outdoor stair is characterized in that a waterproof sill is arranged at the position of a roof outlet of the outdoor stair, a waterproof threshold is arranged at the position of the safety door, and the platform is used for finding a slope and is provided with a rainwater collecting port.

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