Aluminum alloy doors and windows accessories are made of aluminum alloy extruded profiles for frames, stiles and fans, referred to as aluminum doors and windows. The doors and windows made of aluminum alloy as the base material of bearing and transferring self weight and load are called aluminum wood composite doors and windows or aluminum plastic composite doors and windows.
Glass curtain wall, also known as architectural curtain wall and curtain wall, is a kind of facade often used in modern buildings. It is composed of metal, glass, stone and artificial board. It is installed on the outermost layer of the building. It functions as wall, beautiful, windproof, rainproof, energy-saving, etc. curtain wall does not bear any structural load. It is only connected with structural plate or column to bear self weight and resist wind pressure.
The concept is different
Both curtain wall and door and window belong to building maintenance structure, and they do not share the stress of main structure, which makes it difficult to determine whether doors and windows are curtain walls. It not only brings troubles to the curtain wall design, but also to the safety of the curtain wall.
In order to avoid the continuation of this situation, the concept of glass curtain wall is clearly defined in the industrial standard "technical code for glass curtain wall engineering": it is composed of supporting structure system and panel, has certain displacement capacity relative to the main structure, and does not share the role of the main structure.
There is a point mentioned in this: relative to the main structure, there is a certain displacement capacity. As the maintenance components of the support in the opening of the main structure, doors and windows can not meet the capacity of certain displacement relative to the main structure. In the design of curtain wall, the whole frame is suspended on the outside of the main structure, and the relative displacement can be ensured by designing expansion joints and other structural measures.
Different standards and specifications
The state has launched "aluminum alloy doors and windows" (gbt8478-2008) as the latest national standard of doors and windows, and at the same time, the respective provincial (District) standards. For example, Jiangsu Province "aluminum alloy doors and windows engineering technical specification" (dgj32 / j07-2005), Guangdong Province "aluminum alloy doors and windows engineering design, construction and acceptance specification" (dbj15-30-2002) and so on. On the premise that the design of aluminum doors and windows meets the requirements of national standards, it is also necessary to meet the requirements of regional and provincial standards as far as possible, so as to ensure that the local acceptance is qualified. "Classification and test method of air tightness, watertightness and wind pressure resistance performance of building external doors and windows" (gbt7106-2008) is the latest national standard for performance testing and grading of doors and windows engineering.
As the leader of curtain wall industry standard, technical code for glass curtain wall engineering (JGJ102-2003) is generally recognized by the industry. The national standard "building curtain wall" GB / t21086-2007 makes a more comprehensive description and agreement on curtain wall system; building curtain wall (GB / t21086-2007) and test method for air tightness, watertightness and wind pressure resistance performance of building curtain wall (GB / t15227-2007) are curtain wall engineering It provides the basis and method for testing and grading.