CN102839775A - Wind-resisting pressure reducing device for roof - Google Patents

Abstract

The invention discloses a roof wind resistance and decompression device, which comprises a vertical cylinder and a lightweight cover plate covering the vertical cylinder. The cylinder is provided with a transverse elastic support device and a lightweight The cross brace of the cover plate, the elastic support device is located between the light cover plate and the cross brace, and the upper and lower sides are respectively supported; the cylinder is fixed on the support, and the support is fixedly connected to the roof. The beneficial effects of the present invention: the device can prevent outdoor rainwater from entering the room under the condition of no wind or light wind. When the wind speed exceeds a certain set wind speed, the indoor airflow will flow to the outside of the roof through the gap between the light cover plate and the cylinder, thereby reducing the indoor air pressure, reducing the air pressure difference inside and outside the roof, and greatly reducing the air pressure. The wind load borne by the roof is reduced, thereby improving the wind resistance of the roof structure.

Description

A roof wind resistance decompression device

technical field

The invention relates to a roof wind resistance and decompression device, in particular to a wind resistance and decompression device for roofs of houses with flat roofs and sloping roofs.

Background technique

Wind disaster is a major natural disaster. my country is an area prone to typhoon disasters, and typhoons registered in my country account for about 35% of the total number of typhoons in the Northwest Pacific. In recent years, with the acceleration of my country's urbanization process and the rapid increase of population and social wealth in coastal areas, the casualties and economic losses caused by typhoons are also showing an increasing trend year by year.

According to the existing survey and research results, one of the main manifestations of typhoon damage to houses in coastal areas of my country is that the roof is blown away by strong winds. Under the action of strong/typhoon, the roof of the building often bears a large negative pressure (upward suction force). Due to the large area of the roof, light weight, and insufficient connection strength with the main structure, the roof of the building often suffers from Blown away under the action of larger negative pressure.

In strong/typhoon-prone areas, wind load is an important design load of building roof structures, and even plays a decisive role in the safe use of building structures. There are a large number of unscientifically designed building roof structures in coastal areas where strong/typhoon-prone areas occur, and their wind resistance is weak. blown or damaged, causing huge casualties and property losses to the society.

Contents of the invention

The present invention aims at reducing the wind load of the roof structure for the purpose of reducing the wind load of the roof structure, which is difficult to solve under the action of strong/typhoon. pressure device.

In order to achieve the above object, the technical solution adopted by the present invention is: a roof wind resistance decompression device, including a vertical cylinder and a lightweight cover plate covering the vertical cylinder, the cylinder is provided with a horizontal The cross brace used to support the elastic support device and the lightweight cover plate, the elastic support device is located between the light cover plate and the cross brace, and the upper and lower sides are respectively supported; the cylinder is fixed on the support, and the support is fixedly connected to the roof. cover.

The lightweight cover is transparent.

The support is ring-shaped.

The support is fixedly connected to the roof by bolts.

Beneficial effects of the present invention: in the case of no wind or light wind, the light cover plate on the device is closely combined with the cylinder structure, there is no air convection indoors and outdoors, and outdoor rainwater cannot enter the room. When the wind speed exceeds a certain set wind speed, because the airflow flows through the roof surface at high speed, the roof surface is under negative pressure, and the light cover plate is sucked up by the negative pressure on it, and the light cover plate is separated from the cylinder structure; At this time, the airflow in the room (normal atmospheric pressure before the light cover is sucked up by the negative pressure) will flow to the outside of the roof through the gap between the light cover and the cylinder, thereby reducing the indoor air pressure and reducing the air pressure inside and outside the roof. The air pressure difference greatly reduces the wind load on the roof, thereby improving the wind resistance of the roof structure.

Description of drawings

Fig. 1, the structural diagram when the wind speed of the present invention is less;

Fig. 2 is a structural diagram of the present invention when the wind speed exceeds a certain set wind speed.

Detailed ways

A roof wind resistance decompression device, comprising a vertical cylinder 1 and a lightweight cover plate 3 covering the vertical cylinder 1, the cylinder 1 is provided with a transverse elastic support device 4 for supporting and a lightweight The cross brace 2 of the heavy cover plate 3, the elastic support device 4 is located between the light cover plate 3 and the cross brace 2, and the upper and lower sides are respectively supported; the cylinder body 1 is fixed on the support 5, and the ring support 5 is fixedly connected to the roof. cover. The lightweight cover plate 3 is preferably made of transparent materials such as glass. The support 5 is fixedly connected on the roof by bolts.

As shown in Fig. 1, when the wind speed is low, the lightweight cover plate 3 is covered on the cylinder body 1, and the elastic support device 4 is at the shortest length under the action of the gravity of the light cover plate.

As shown in Figure 2, when the wind speed reaches a certain set wind speed, the suction generated by the negative pressure on the lightweight cover exceeds the weight of the lightweight cover 3, and the elastic support device 4 extends upward. The board is separated from the vertical cylinder structure, and the indoor air 61 will flow out of the vertical cylinder structure (the indoor air pressure is normal before the light cover is sucked up by negative pressure, and the airflow 6 will flow from the indoor high pressure area to the outdoor low pressure area) . The greater the wind speed, the greater the negative pressure on the lightweight cover, the more the elastic support device elongates upwards, the more the lightweight cover is opened, and the more air will flow out of the vertical cylinder structure.

The device is installed in the hollow part of the roof, and the cylinder body communicates with the airflow inside the house.

Claims (4)

1. roof system wind resistance decompressor; It is characterized in that; Comprise vertical cylindrical shell (1) and be covered in the light cover plate (3) on the vertical cylindrical shell (1); Cylindrical shell (1) is provided with the horizontal stull (2) that is used for support elastic bracing or strutting arrangement (4) and light cover plate (3), and resilient supporting unit (4) is positioned between light cover plate (3) and the stull (2), and withstands respectively up and down; Cylindrical shell (1) is fixed on the bearing (5), and bearing (5) is fixedly connected on the roof system.

2. a kind of roof system wind resistance decompressor as claimed in claim 1 is characterized in that light cover plate (3) is a transparent material.

3. according to claim 1 or claim 2 a kind of roof system wind resistance decompressor is characterized in that, described bearing (5) is an annular.

4. a kind of roof system wind resistance decompressor as claimed in claim 3 is characterized in that bearing (5) is connected on the roof system through bolt.

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