Mechanical model of scaffold based on pulling and lifting unloading method and solving method of mechanical model

Abstract

The invention belongs to the technical field of engineering stress calculation, and provides a mechanical model of a scaffold based on a pulling and lifting unloading method and a solving method of the mechanical model. The model mainly comprises a single vertical rod model formed on the basis of an inner vertical rod or an outer vertical rod of the scaffold, wherein the single vertical rod model comprises k1, G1, k2, G2, k3, G3... kn, Gn and kn + 1 which are linearly and sequentially arranged, in which ks1, ks2... ksn are correspondingly connected between k1 and G1... kn and Gn; herein, the k1 is the vertical rigidity of the scaffold at the foundation section; the ks1... ksn is the vertical rigidity of the unloading steel wire rope at the corresponding section of the corresponding scaffold; the G1... Gn are equivalent concentrated vertical loads at the first section... the nth section of the vertical rod respectively; the k1,... kn + 1 are equivalent springs at the first section to the nth section of the vertical rod respectively. According to the method, the stress calculation accuracy and the calculation convenience of the scaffold under the pulling and lifting unloading method can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of engineering force calculation, and in particular relates to a mechanical model of a scaffold based on a pulling and unloading method and a solution method thereof. Background technique [0002] In the process of building construction, steel pipe scaffolding is often erected around the building to achieve the purpose of providing a working surface for the construction of the building's outer wall, safe enclosure for high-altitude operations, workers' up and down passage, and tool transportation. With the development of economy and technology, buildings are getting taller and scaffolding is being erected higher and higher, and the axial force on the steel pipe at the bottom of the scaffold is very large, which leads to the fact that the steel pipe at the bottom of the scaffold cannot meet the requirements in stability checking in many cases. In the prior art, in order to reduce the axial force on the steel ...

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Problems solved by technology

However, after a large number of finite element calculations and studies by relevant technical personnel, it has been shown that the unloading coefficient is affected by many factors, and the dispersion and error are relatively large. There are safety hazards in use

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