New glass curtain wall construction details

New glass curtain wall construction details do you know? Glass decorative curtain wall has more obvious advantages, the most prominent is its good practicality and decorative. At the same time, the application of a large number of new glass curtain wall brought about by the hidden problems are increasingly prominent, the following together.

Glass curtain wall (reflectionglasscurtainwall), refers to the supporting structural system can be relative to the main structure of the main structure has a certain displacement capacity, does not share the role of the main structure of the building envelope or decorative structure. There are two kinds of walls: single-layer and double-layer glass. Glass curtain wall is a beautiful and novel method of building wall decoration, is a modernist high-rise building era of conspicuous features. 2013 according to the bird protection volunteer organization FLAP (FatalLightAwarenessProgram) statistics, just in Toronto alone, there are one million to nine million migratory birds die each year in these glass curtain walls.

New glass curtain wall construction details

1, in order to improve the sealing performance of the curtain wall, between the two pieces of insulating glass filled with 18mm diameter foam strips and filled with weather-resistant adhesive, forming a 15mm wide gap, making the insulating glass deformation occurs when the displacement of space. Glass curtain wall engineering technical specification (JGJ102-1996), hidden frame glass curtain wall seam width should not be less than 15mm.

Reflects the beam and column connection structure, as well as the connection relationship between the glass assembly and the beam. Glass assemblies shall be produced in the workshop that meets the clean requirements and then transported to the construction site for installation. Curtain wall components should be firmly connected, the joints must be sealed with sealing materials to make the connection parts sealed (glass sub-frame and beams, main columns are intersected with a rubber gasket), used to eliminate the friction between the components of the sound, to prevent the string of smoke, string of fire and to eliminate the thermal expansion and contraction stress caused by the temperature difference.

2, fire structure in order to ensure the fire resistance of the building, the glass curtain wall and each floor, partition wall and the gap between the window wall, window sill wall should be filled with non-combustible materials (such as filler rock wool, etc.) to fill the tight, the formation of fireproof compartment. Installation of protective rock wool with a thickness of not less than 100mm at the position of the crossbeam and wrapped with 1.5mm steel plate.

3, lightning protection structure "Lightning Protection Design Code for Buildings" (GB50057) provides that high-rise buildings should be set up to protect against lightning pressure ring (along the perimeter of the perimeter of the building's exterior walls at regular intervals of horizontal lightning protection network, used to prevent side lightning), the vertical distance between the ring should not be greater than 12m, pressure ring can be utilized within the beam of the longitudinal reinforcement or installed separately.

If the longitudinal reinforcement within the beam is used to make the equalizing ring, the curtain wall is located in the equalizing ring at the pre-embedded anchor bars must be connected with the equalizing ring at the beam of longitudinal reinforcement; set the equalizing ring location of the curtain wall columns must be connected with the equalizing ring, the location of the curtain wall beams must be connected with the curtain wall columns; end of the equalizing ring at the column must be fixed in the equalizing ring set the floor of the columns are connected, as shown in Figure 10.3. Above grounding resistance should be less than 4. Modern high-rise building glass curtain wall used by the combination of mirror glass and ordinary glass, compartment filled with dry air or inert gas insulating glass. Insulating glass has two and three layers of points, two layers of insulating glass by two layers of glass plus sealing framework, forming a laminated space; three layers of glass is composed of three layers of glass constitute two laminated space. Insulating glass has the advantages of sound insulation, heat insulation, anti-frost, moisture resistance and wind pressure strength. According to measurements, when the outdoor temperature is -10 ℃, the temperature in front of the single glass window is -2 ℃, while the indoor temperature using triple insulating glass is 13 ℃. And in the hot summer, double insulating glass can block 90% of the sun's radiant heat. The sunlight can still pass through the glass curtain wall, but the sun on the body mostly does not feel hot. Rooms with insulating glass curtain walls can be warm in winter and cool in summer, greatly improving the living environment.

New glass curtain wall construction details of the content is here, construction is simple, traditional form. In addition to the open frame glass curtain wall not only glass involved in indoor and outdoor heat transfer, aluminum alloy frame is also involved in indoor and outdoor heat transfer. In a curtain wall unit, the glass area far exceeds the area of the aluminum alloy frame, so the thermal performance of the glass dominates in the open frame glass curtain wall.