Buried natural smoke outlet structure

Abstract

The utility model discloses a buried natural smoke vent structure which comprises a garage free face natural smoke vent and a garage top natural smoke vent, the garage free face natural smoke vent is communicated with the interior of a garage through a first switching channel, and a vertical shaft is arranged at the garage top natural smoke vent. And the vertical shaft is communicated with the interior of the garage through the second switching channel. The problems that an existing basement free face natural smoke outlet is not high enough, and a natural smoke outlet in the top of a garage greatly influences landscape arrangement of a garage top plate are solved.

Description

Technical Field

[0001] The utility model relates to the field of garage smoke exhaust structures, in particular to an underground natural smoke exhaust port structure. Background Art

[0002] According to GB50067-2014 "Code for Fire Protection Design of Garages, Repair Garages and Parking Lots": Except for open garages, underground garages with a construction area of ​​less than 1000m2 and repair garages, garages and repair garages should be equipped with smoke exhaust systems and should be divided into smoke-proof zones; the smoke exhaust system can adopt natural smoke exhaust or mechanical smoke exhaust; the total area of ​​natural smoke exhaust outlets should not be less than 2% of the indoor floor area; natural smoke exhaust outlets should be located above the exterior wall or on the roof, and should be equipped with devices that are easy to open.

[0003] Taking a single 3900m2 fire compartment as an example, after deducting the closed area of ​​the underground garage evacuation system, equipment room, etc., the smoke compartment area of ​​a single fire compartment is about 3500m2. According to the specification, the effective area of ​​the natural smoke exhaust port required is about 70m2. If mechanical smoke exhaust is set, one fire compartment considers 2 mechanical smoke exhaust systems + 1 mechanical air supply system, and the required supply and exhaust shaft is about 6m2. It can be seen that when the underground garage adopts the natural smoke exhaust scheme, the area of ​​the opening directly to the outside of a single fire compartment is about 10 times different from that of the mechanical smoke exhaust scheme. This is also the reason why the natural smoke exhaust scheme is rarely used in underground garages.

[0004] There are generally two types of natural smoke exhaust vents commonly used in existing underground garages: For the side of the garage facing the air (open to the outdoors), natural smoke exhaust can be achieved by setting a hole on the side wall facing the air, and controlling any point in the smoke-proof partition to be within 30 m from the air surface; the smoke storage bin and smoke barrier vertical wall of the natural smoke exhaust system are generally required to be 2.2 m from the ground due to regulatory restrictions, that is, the natural smoke exhaust vent needs to be arranged within a net height of more than 2.2 m from the ground. When the underground garage adopts the natural smoke exhaust scheme, the garage floor height can generally be reduced by 0.3m-0.4m. At this time, the net height under the beam is about 2.5m-2.6m, and the effective height under the beam that can be used by the natural smoke exhaust vent on the side wall is only 0.3m-0.4m. According to the reverse calculation of a single smoke-proof partition of 1750m2, the length of the natural smoke exhaust vent needs to reach 87.5m-116.7m, which is relatively high for the actual project site environment. If the effective height of the natural smoke exhaust vent can be provided to 1m, the length of the natural smoke exhaust vent needs to be reduced to 35m.

[0005] For locations where the smoke-proof partition is more than 30m away from the open surface, this can be achieved by setting up a natural smoke exhaust air shaft on the garage roof. Similarly, based on the reverse calculation of 1750m2 for a single smoke-proof partition, it is necessary to arrange a natural smoke exhaust hole with an effective area of ​​approximately 35m2 within the range of the garage roof, which has a great impact on the landscape layout of the garage roof. Utility Model Content

[0006] The utility model aims to provide an underground natural smoke exhaust vent structure to solve the problems that the natural smoke exhaust vent on the open surface of the existing basement is not high enough and the natural smoke exhaust vent on the top of the garage has a great influence on the landscape layout of the garage roof.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A buried natural smoke exhaust outlet structure comprises a natural smoke exhaust outlet on the open side of a garage and a natural smoke exhaust outlet on the top of the garage. The natural smoke exhaust outlet on the open side of the garage is connected with the interior of the garage through a first conversion channel. A vertical shaft is provided at the natural smoke exhaust outlet on the top of the garage, and the vertical shaft is connected with the interior of the garage through a second conversion channel.

[0009] Taking into account the soil covering range of about 1.5m, under the condition that the effective height of natural smoke exhaust under the existing beam is only 0.3-0.4m, the effective height of the smoke exhaust port can be increased through the conversion channel, so that the length of the natural smoke exhaust port of a single smoke-proof partition can be effectively shortened. The second conversion channel can effectively improve the problem that the natural smoke exhaust port on the top of the garage has a great impact on the landscape layout of the garage roof.

[0010] As a further preference of the present utility model, the first conversion channel is arranged within the garage covering height range, the first conversion channel refers to raising the structural top plate height to 0.9m above the original structural top plate elevation of the garage in the area 1.2m away from the side wall, the lower part of the first conversion channel is directly connected to the interior of the garage, and the side of the first conversion channel is connected to the natural smoke exhaust port on the open surface of the garage.

[0011] Under the condition that the effective height of natural smoke exhaust under the existing beam is only 0.3-0.4m, the effective height of the natural smoke exhaust outlet can be increased to 1.2-1.3m by adding 0.9m through the conversion channel. In this way, the length of the natural smoke exhaust outlet of a single smoke-proof partition can be shortened to about 27m-30m.

[0012] As a further preferred embodiment of the present invention, the second conversion channel is arranged within the garage cover height range, the lower part of the second conversion channel is directly connected to the interior of the garage, and the side of the second conversion channel is connected to a vertical shaft directly leading to the outdoors.

[0013] As a further preferred embodiment of the present invention, the top of the vertical shaft is 0.2m higher than the finished surface of the top plate covering.

[0014] As a further preferred embodiment of the utility model, a load-bearing metal grille is arranged at the entrance of the vertical shaft, a metal protective net is arranged closely under the metal grille, a structural plate is arranged directly below the projection of the vertical shaft entrance, the area of ​​the structural plate is larger than the projection area of ​​the entrance, and a 200mm high reflective ridge is arranged around the structural plate to form a rainwater collection area.

[0015] The metal grille is welded with angle steel fixed to the side wall of the shaft on all sides, and the metal protective net can prevent debris such as leaves.

[0016] As a further preferred embodiment of the present invention, floor drains are arranged at the bottom and sides of the rainwater collection area, and the rainwater is discharged to the garage collection pit through corresponding drainage pipes.

[0017] Compared with the prior art, the utility model can achieve at least one of the following beneficial effects:

[0018] 1. Taking into account the soil covering range of about 1.5m, under the condition that the effective height of natural smoke exhaust under the existing beam is only 0.3-0.4m, the effective height of the smoke exhaust port can be increased through the conversion channel, so that the length of the natural smoke exhaust port of a single smoke-proof partition can be effectively shortened. The second conversion channel can effectively improve the problem that the natural smoke exhaust port on the top of the garage has a great impact on the landscape layout of the garage roof.

[0019] 2. Under the condition that the effective height of natural smoke exhaust under the existing beam is only 0.3-0.4m, the effective height of the natural smoke exhaust port can be increased to 1.2-1.3m by adding 0.9m through the conversion channel. In this way, the length of the natural smoke exhaust port of a single smoke-proof partition can be shortened to about 27m-30m.

[0020] 3. The metal grille is welded with angle steel fixed to the side wall of the shaft on all sides. The metal protective net can prevent debris such as leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0024] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Specific embodiment 1:

[0029] Figure 1 A buried natural smoke exhaust vent structure is shown, including a natural smoke exhaust vent 1 on the open side of a garage and a natural smoke exhaust vent 2 on the top of a garage. The natural smoke exhaust vent 1 on the open side of the garage is connected to the interior of the garage through a first conversion channel 3. A vertical shaft is provided at the natural smoke exhaust vent 2 on the top of the garage, and the vertical shaft is connected to the interior of the garage through a second conversion channel 4.

[0030] Taking into account the soil covering range of about 1.5m, under the condition that the effective height of natural smoke exhaust under the existing beam is only 0.3-0.4m, the effective height of the smoke exhaust port can be increased through the conversion channel, so that the length of the natural smoke exhaust port of a single smoke-proof partition can be effectively shortened. The second conversion channel can effectively improve the problem that the natural smoke exhaust port on the top of the garage has a great impact on the landscape layout of the garage roof. Specific embodiment 2:

[0032] This embodiment further illustrates the first conversion channel 3 on the basis of the specific embodiment 1. The first conversion channel 3 is arranged within the garage covering height range. The first conversion channel 3 refers to raising the structural top plate height to 0.9m above the original structural top plate elevation of the garage in the area 1.2m away from the side wall. The lower part of the first conversion channel 3 is directly connected to the interior of the garage, and the side of the first conversion channel 3 is connected to the natural smoke exhaust port 1 on the open surface of the garage.

[0033] Under the condition that the effective height of natural smoke exhaust under the existing beam is only 0.3-0.4m, the effective height of the natural smoke exhaust outlet can be increased to 1.2-1.3m by adding 0.9m through the conversion channel. In this way, the length of the natural smoke exhaust outlet of a single smoke-proof partition can be shortened to about 27m-30m. Specific embodiment 3:

[0035] This embodiment further illustrates the second conversion channel 4 based on the specific embodiment 1. The second conversion channel 4 is arranged within the garage cover height range. The lower part of the second conversion channel 4 is directly connected to the interior of the garage, and the side of the second conversion channel 4 is connected to a vertical shaft directly leading to the outdoors. Specific embodiment 4:

[0037] This embodiment further illustrates the vertical shaft on the basis of the specific embodiment 1, wherein the top of the vertical shaft is 0.2 m higher than the top plate soil finishing surface. Specific embodiment 5:

[0039] This embodiment further illustrates the vertical shaft on the basis of the specific embodiment 1. A load-bearing metal grille is arranged at the opening of the vertical shaft. A metal protective net is arranged closely under the metal grille. A structural plate is arranged directly below the projection of the vertical shaft opening. The area of ​​the structural plate is larger than the projection area of ​​the opening. A 200 mm high anti-ridge is arranged around the structural plate to form a rainwater collection area.

[0040] The metal grille is welded with angle steel fixed to the side wall of the shaft on all sides, and the metal protective net can prevent debris such as leaves. Specific embodiment 6:

[0042] This embodiment further illustrates the rainwater collection area based on the specific embodiment 5. Floor drains are arranged at the bottom and sides of the rainwater collection area, and the rainwater is discharged to the garage collection pit through corresponding drainage pipes.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An underground natural smoke exhaust port structure, characterized in that: The utility model comprises a natural smoke exhaust port (1) on the open surface of a garage and a natural smoke exhaust port (2) on the top of the garage, wherein the natural smoke exhaust port (1) on the open surface of the garage is connected to the interior of the garage via a first conversion channel (3), and a vertical shaft is provided at the natural smoke exhaust port (2) on the top of the garage, and the vertical shaft is connected to the interior of the garage via a second conversion channel (4).

2. The underground natural smoke exhaust port structure according to claim 1 is characterized in that: The first conversion channel (3) is arranged within the garage cover height range. The first conversion channel (3) is a region 1.2 m from the side wall that raises the height of the structural top plate to a height of 0.9 m above the original structural top plate elevation of the garage. The lower portion of the first conversion channel (3) is directly connected to the interior of the garage, and the side of the first conversion channel (3) is connected to the natural smoke exhaust port (1) on the open surface of the garage.

3. The underground natural smoke exhaust port structure according to claim 1 is characterized in that: The second conversion channel (4) is arranged within the garage cover height range, the lower part of the second conversion channel (4) is directly connected to the interior of the garage, and the side of the second conversion channel (4) is connected to a vertical shaft directly leading to the outside.

4. The underground natural smoke exhaust port structure according to claim 1 is characterized in that: The top of the shaft is 0.2m higher than the top plate soil finishing surface.

5. The underground natural smoke exhaust port structure according to claim 1 is characterized in that: A load-bearing metal grille is arranged at the entrance of the shaft, a metal protective net is arranged closely under the metal grille, a structural plate is arranged directly below the projection of the shaft entrance, the area of ​​the structural plate is larger than the projection area of ​​the entrance, and a 200mm high reflective ridge is arranged around the structural plate to form a rainwater collection area.

6. The underground natural smoke exhaust port structure according to claim 5 is characterized in that: Floor drains are arranged at the bottom and sides of the rainwater collection area, and the rainwater is discharged to the garage collection pit through corresponding drainage pipes.

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