When the selected silicone structural adhesive is connected, the maximum stress value of the curtain wall facade only decreases by 0.4%, and the maximum deflection value only decreases by 11.1%. This is because the elastic modulus of the silicone structural adhesive is only 1.4mpa, far less than the elastic modulus of the glass 72000MPa. When the panel, the glass rib and the structural adhesive work together, the stress value generated by the silicone structure is quite small. Thus rendering the panel useless in the structure. Therefore, the effect of the panel on the glass beam tends to be zero, and the effect on the stiffness is slightly larger, but the numerical value is also very small, which is not enough to be considered in the structural design.
When epoxy resin is selected, the maximum stress value of curtain wall panel is reduced by 46% and the maximum deflection value is reduced by 72.4%, which indicates that the deformation of glass panel and glass rib can be more synchronized by increasing the elastic modulus of connecting material, and the effect of glass panel on the structure is improved. In structural design, considering the effect of panel on structural skeleton can improve the utilization rate of glass materials and reduce the size of glass cross section. When the selected steel is connected, the deformation of the panel and the glass rib is basically in the same position. Considering the effect of the panel, the maximum stress value and maximum deflection value of the curtain wall construction are reduced by 45.2% and 75.1% respectively. It can be seen that the effect of the panel on the glass beam is similar to that of the epoxy resin connection between the glass panel and the glass rib. However, the epoxy resin connection scheme between the glass panel and the glass rib is almost not available in China, while the steel connection scheme is common in China, so the steel connection scheme is recommended.
When epoxy resin was used, the stress distribution of t-shaped beam flanges was not uniform, and the maximum deflection appeared at the midpoint of the outer edge of the flanges, which was 8.7% larger than the maximum deflection of the web. It can be seen that the flange width of the point support curtain wall cannot be directly selected as the half span of the panel, but should be selected according to the effective width.
Send your message to us:
Post time: Jul-28-2022
