Unit curtain wall cross position

Unit curtain wall is divided into horizontal sliding type and horizontal locking type from the internal structure. They are through the rod inserts and rubber strip docking to complete the joint seal, the core difference is that the dry cavity waterproof principle of the cross position is completely different. The cross position mentioned here refers to the formation of an internal and external penetrating void between the four adjacent plates when the unit plate is installed. The different treatment of this void determines the structural form of the unitized curtain wall.

The cross position of the horizontal lock in unit curtain wall adopts a combined cast aluminum plug, which plays an important role in the transmission of force between plates, and its drainage mode is centralized.
The horizontal sliding unit curtain wall mainly drains water to the outside wet cavity by horizontally inserting the dry cavity, and also has a simplified and improved centralized drainage mode. There are three common ways to seal the cross position. At present, there are few horizontal locking unit curtain walls in China, and most of them are horizontal sliding curtain wall structure.
After the upper and lower beams of the horizontal sliding unit curtain wall are inserted and fixed, the length direction of the extended beam is allowed to move randomly with each other. However, because each unit plate has a fulcrum to limit the displacement in this direction (left and right), in principle, when the horizontal lateral force is small or zero, the dislocation of the upper and lower beams is only interlayer displacement. When the horizontal and lateral forces of curtain wall glazing are not negligible, we need to limit the relative sliding of the upper and lower beams to ensure that the plate does not deflect. This method of limiting the beam from the structure of the force and horizontal lock is similar, but from the cross position, waterproof and drainage principle of the whole system, or belongs to the horizontal sliding unit curtain wall.
The development of modern curtain wall is actually the progress of cross – position waterproof practice. As mentioned before, we are constantly improving the sealing design of this part in the right direction. So what is the wrong direction? In fact, when the unit curtain wall was just introduced into China, we swarmed around looking for foreign unit curtain wall information, and then felt the stones across the river, each show his power. At that time do unit curtain wall many are leaking, one reason is the processing level and strip quality can not keep up with, another more important reason is also the habit of frame curtain wall see seam glue moved to unit curtain wall, not carefully structure sealing waterproof system.