Spherical or approximately spherical steel structure reticulated shell building facade construction method

Abstract

The invention discloses a spherical or approximately spherical steel structure reticulated shell building facade construction method. The spherical or approximately spherical steel structure reticulated shell building facade construction method comprises the steps that inner and outer arc-shaped square pipes are fixed; a heat preservation layer is filled; inner and outer metal steel wire meshes are fixed; inner and outer cement mortar is sprayed; a waterproof layer is laid; a fine aggregate concrete protection layer is laid; and keels and facing materials are installed. According to the spherical or approximately spherical steel structure reticulated shell building facade construction method, the arc-shaped square pipes are welded to the inner side and the outer side of a steel structure correspondingly, two layers of arc-shaped reinforcing surfaces are formed, the effect of supporting a base is achieved, on one hand, supporting steel columns between the adjacent small arc square pipes enable the joints of the small arc square pipes to be in smooth transition, and it is avoided that protrusions and corner angles are formed in the later period to affect metal steel wire mesh installation and cement mortar spraying construction; on the other hand, the overall structural strength of the arc-shaped reinforcing surface is enhanced; the two layers of arc-shaped reinforcing surfaces are matched with the two layers of metal steel wire meshes to jointly form a structure for bearing and fixing a cement mortar layer, and the problem that the cement mortar layer cannot be constructed is solved; and a building facade is stable in overall structure, high in strength, smooth and attractive.

Description

technical field [0001] The invention belongs to the technical field of reticulated shell building construction, and in particular relates to a method for constructing an exterior facade of a reticulated shell building with a spherical or approximately spherical steel structure. Background technique [0002] Reticulated shell buildings are also called grid shell buildings. Most of the roof parts are spherical or elliptical, oval, irregular, etc., which are approximately spherical, and belong to large-span arc surfaces. The reticulated shell has relatively good mechanical performance, high rigidity and low self-weight. It has a large internal space without supporting columns, and its structural treatment, supporting structure and construction process are relatively complicated. When spraying cement mortar with hanging mesh on the steel structure reticulated shell, due to the large polygonal holes of the reticulated shell, even if the hanging mesh is set as the cement mortar at...

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Problems solved by technology

The reticulated shell has relatively good mechanical performance, high rigidity and low self-weight. Its internal space is wide and there are no supporting columns. The structural treatment, supporting structure and construction process are relatively complicated.

When spraying cement mortar with hanging mesh on the steel structure reticulated shell, due to the large polygonal holes of the reticulated shell, even if the hanging mesh is set as the cement mortar attachment base, there will still be problems such as sag, unevenness, and even cracking of the cement mortar layer, resulting in The facade structure of the building is unstable, easy to peel off, and the appearance quality is very poor, it is difficult to meet the design expectations, and if the polygonal holes of the reticulated shell are too large, the concrete construction cannot be carried out directly, so some prefabricated blocks can only be fixed on the outside of the steel structure. To achieve the effect of sheltering from rain or light, with the prolongation of use time, there are problems of aging and short service life

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