Classification of gas film structure

With the continuous development of scientific and technological level and building technology, air film structure buildings appear more and more in various regions. With its advantages of low cost, short construction period, convenient installation and demolition, good space utilization, energy conservation and environmental protection, it is deeply loved by the public. Today, let's learn about the classification and working principle of gas film structure.

1. Air supported membrane structure

Air supported membrane structure refers to that the periphery of the membrane surface is closed and fixed on the support structure or foundation, and the fan is used to continuously supply air to form the required spatial curved surface without beam column support, and the external load is resisted by the internal and external pressure difference. Inflate the building through the pressure control system to maintain a certain pressure difference inside and outside the room, make the covering membrane subject to upward buoyancy and produce a certain pretension stress, so as to ensure the stiffness of the system. An automatic air pressure regulation system is set indoors to timely adjust the indoor and outdoor air pressure to adapt to the changes of external load. Because it does not need any support, it is suitable for super long-span buildings, generally used for large stadiums, etc. The utility model has the advantages of large space, light weight and simple construction.

2. Air pillow membrane structure

The air pillow membrane structure is also carried by the pressure difference between inside and outside the membrane surface. The air pillow and its combination can be used as envelope structure such as roof or facade. In order to make the air pillow roof have good light transmittance and thermal insulation effect, ETFE film is generally used. The inner membrane can be added inside the air pillow to reduce the convection of gas, so as to improve its thermal insulation effect.

3. Airbag membrane structure

Air bag membrane structure is an air bag self-supporting double-layer membrane structure, which means that air is filled between the double-layer membranes. Compared with the single-layer membrane, it can be filled with high-pressure air to form a certain rigid structure. Inflate a single membrane component to maintain sufficient internal pressure. The combination of multiple membrane components can form an overall stress system with a certain shape. This structure has high requirements for the air tightness of the membrane material itself, or it is necessary to inflate the membrane component continuously. The typical inflatable membrane structure building is the water cube. Membrane structure materials are amorphous. Only the shape maintaining tension balance is a stable shape, which can give full play to the characteristics of high tensile strength of membrane structure materials and apply reasonable support structure system. The internal air pressure is mainly determined by the load (wind load, snow load, etc.) and membrane strength.

4. Air rib membrane structure

The air rib membrane structure is a rigid "air rib structure" formed by setting connecting pipes between the main rib pipes to connect multiple main rib pipes into one. The "air rib structure" has become the main stress component of the building. Combined with the ceiling cloth and thermal insulation materials covered outside the "air rib structure", it forms the stress structure and enclosure structure in the traditional building, forming a novel air rib membrane structure, This structure has the excellent characteristics of self-supporting, rapid construction with fan pressurization, no need of any foundation, hardware connection and any cable.