Stability of unit body curtain wall

The open profile of unit body curtain wall has been widely used in curtain wall engineering because of its high material utilization rate and convenient processing and assembly, and many scholars at home and abroad have studied it. We have carried out the experimental study on the overall stability of aluminum alloy members, analyzed the shear strength of aluminum alloy beam with thin web, and carried out the experimental study and finite element analysis on the mechanical performance of the joints in aluminum alloy reticulated shell structure. The design formula and reliability of aluminum alloy structural members are studied and analyzed, and the stability coefficient of symmetrical section compression bar and the stress theory of axial compression bar are analyzed. The direct strength method for bending aluminum alloy member is studied, and the circular hollow aluminum alloy column is numerically analyzed and designed.

The open section of i-shaped, groove and other main structure is relative to the closed section, because of the structural characteristics of the section, can give full play to the characteristics of the section to resist external load, in the field of main modern curtain wall design has been a lot of applications. Curtain wall as the envelope structure, should be able to use the open section profile. Based on single open section, open section aluminum alloy, aluminum alloy column and column experiment research, and USES the China, the United Kingdom and the United States the related rules of aluminum alloy structure calculation on the calculation analysis and comparison, in order to obtain accurate calculation method, to make it in the guarantee structure on the basis of safe and reliable is good for improving the utilization ratio of the strength of the opening section, Better play its curtain wall structure performance.

The male and female columns of the curtain wall unit also have some characteristics favorable to its bearing capacity in the actual stress process :(1) the mutual support of the flange of the male and female columns; (2) the restraint effect of the beam on the column: the beam in the unit body can effectively restrain the open profile column, prevent its lateral torsion and improve its overall stability; (3) Because the direction of positive wind pressure is toward the shear center, and the direction of negative wind pressure is away from the shear center, the characteristic buckling value under positive wind pressure is smaller than that under negative wind pressure; But the advantage of curtain wall facade is that under the action of positive wind pressure, because the glass is consolidated with the aluminum profile through the structural adhesive, it can provide favorable support for the compression flange; (4) there are hooks between the male and female columns, which can effectively prevent the opening when the column is subjected to positive wind and torsion occurs. Under the action of negative wind, the male and female pillars can “fit” together well because of the interaction between them.