Definition of building curtain wall:
Building curtain wall is different from infill wall. It has the following characteristics:
1. It is a complete structural system composed of panels and supporting structures;
2. It can withstand large deformation in its own plane or have sufficient displacement capacity relative to the main structure;
3. It is a protective structure that does not share the load and effect of the main structure.
Curtain wall is the outer wall of the building, which is non-load-bearing and is hung like a curtain, so it is also called "curtain wall". It is a lightweight wall with decorative effect commonly used in modern large and high-rise buildings. It is composed of panels and supporting structure system, which can have a certain displacement capacity relative to the main structure or a certain deformation capacity itself, and does not bear the effect of the main structure. The building's external protective structure or decorative structure (exterior wall frame support system is also a kind of curtain wall system)
The important role of curtain walls:
Curtain walls can resist temperature changes:
When the outside temperature changes, the building structure will shrink when cold and expand when hot. If no measures are taken, the structure will bend and crush in summer and crack and break in winter.
Encapsulating the entire structure with a building curtain wall keeps the structure indoors, so that the temperature no longer changes and there is no damage to the structure, ensuring the safety of the main structure. This is one of the main reasons why high-rise buildings must use building curtain walls.
Curtain walls are needed to resist earthquake disasters:
The intensity of the epicenters of the Great Hanshin Earthquake in Japan in 1995 and the Chichi Earthquake in Taiwan in 1999 were both above 11 degrees. Masonry infill walls and conventional glass windows were destroyed in large quantities, but curtain walls, even glass curtain walls, were rarely reported to be damaged by earthquakes, and most of them were well preserved after the earthquake.
The Structural Institute of the China Academy of Building Research has conducted vibration table tests on seven types of building curtain walls. The results show that even when the table input acceleration reaches 0.9g (equivalent to a 10-degree earthquake) and the structural displacement reaches more than 1/60, the curtain wall is not damaged and maintains good performance.
The wide seams around the panels of the building curtain wall and the special connection structure enable it to withstand large displacements and deformations of 1/100 to 1/60. Similar to leaves relative to branches and curtains relative to the stage, no matter how the main structure shakes, the curtain wall can be safe and sound.
High-rise buildings soar into the sky and swing violently during earthquakes. Only curtain walls can ensure earthquake safety and prevent collapse and fall, preventing casualties. Under current technical conditions, high-rise buildings still have to use building curtain walls, which are difficult to replace with other walls.
Curtain wall saves structure and foundation costs:
Building materials, such as steel and cement, are high-energy-consuming and high-cost materials. Saving materials means saving energy and resources.
The weight of a glass curtain wall is only 1/10 of a brick wall and 1/7 of a concrete wall panel; and the weight of a glass curtain wall is only 35~40kg/m². For a high-rise building with a height of 150m and an exterior wall area of 20,000m², the use of curtain walls can reduce the weight of the wall by 5,000t~12,000t. This greatly reduces the material consumption of the main structure, reduces the load on the foundation, and saves the cost of the foundation.
Curtain wall decoration not only brings many advantages to buildings, such as visual beauty, energy-saving performance, lighting conditions, and safety assurance, but also has high economic value.
Building curtain walls are an important guarantee for structural safety. Reasonable design and careful construction are the attitudes that our curtain wall industry should have. Liaoning E-taifeng Co.,Ltd can produce Curtain Wall Sliding Window for building curtain walls and provide customized services. Liaoning E-taifeng Co.,Ltd have accumulated many years of experience in the curtain wall industry, are familiar with the needs and challenges of various projects, have successfully completed many large-scale projects, and have accumulated extensive customer resources and a good market reputation. Over the years, Liaoning E-taifeng Co.,Ltd have won the high trust and satisfaction of our customers with high-quality products and services.
