Single-layer plane cable net glass curtain wall self leveling construction method based on form finding analysis

Abstract

The invention discloses a single-layer plane cable net glass curtain wall self leveling construction method based on form finding analysis, which is characterized in that in the nonlinear limited element construction simulation analysis period, a nonlinear limited element inverse iteration method for determining the single-layer plane cable net curtain wall zero state is adopted for carrying out the form finding analysis, and the height difference value of each knot point on a vertical cable in the initial state and the design forming state is obtained through calculation and is used for guiding the in-site construction. In the in-site construction control period, through a method of drawing marking points, the position of each knot point (the position of cable clamps) in the initial state is determined according to the height difference value of each knot point on the vertical cable in the initial state and the design forming state obtained through the limited element construction simulation calculation, and then, the curtain wall actual dead weight effect is utilized for making all knot points automatically displace to the design forming state positions. The method disclosed by the invention has the advantages that a large amount of construction cost can be saved, the operability and the applicability are strong (the method is particularly applicable to strong wind or ultra-high curtain walls), the construction difficultly and the damage rate of glass in the construction process and the service period can be reduced, and the potential safety hazard is reduced.

Description

technical field [0001] The invention discloses a self-straightening construction method for a single-layer plane cable-net glass curtain wall based on form-finding analysis, which belongs to the technical field of single-layer plane cable-net curtain wall construction. Background technique [0002] The single-layer planar cable-net glass curtain wall system is favored by all parties for its simple structure, light appearance and excellent permeability. [0003] The single-layer planar cable net is a typical flexible tension structure. During its design or construction, four states of the structure need to be clarified: 1) Zero state: the lofting state with no self-weight and no prestressing effect, that is, the initial stage of structural formation. state; 2) initial state: the equilibrium state of the structure under the action of prestress; 3) design forming state: the equilibrium state of the structure under the action of prestress and self-weight of glass, claws and cabl...

AI Technical Summary

Problems solved by technology

[0006] The construction of the single-layer planar cable-net glass curtain wall needs to ensure that the shape of the curtain wall meets the design requirements after the glass is installed and constructed. The current common construction method can only basically solve the problem of elastic deformation of the vertical cables in the cable-net, but brings huge additional construction costs; and In a strong wind environment or on the outer wall of a super high-rise building, the construction of this scheme is very difficult; more importantly, there are great potential safety hazards in production; in addition, it is also limited by the weight of the nodes, and the residual force in the glass surface is relatively large

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