Reverse construction method of single-layer flat plate latticed shell roof structure

Abstract

The invention discloses a reverse construction method of a single-layer flat plate latticed shell roof structure. The reverse construction method comprises the steps that a temporary lifting support is installed; a latticed shell roof is assembled on the ground according to a drawing; the assembled latticed shell roof is tried to be lifted; the latticed shell roof is lifted to a design position; connecting rod pieces are embedded and supplemented in the high altitude, and a lower shear wall is constructed; beam members between the shear wall and columns and other beam members are connected; the temporary lifting support is unloaded; and lower floor members are connected. According to the reverse construction method, a triangular lattice system is formed through the structural columns and the lifting support, and the influence of the single-layer latticed shell roof reverse construction forming process on the design use stage can be reduced; temporary horizontal connecting rods are arranged on the lifting support, horizontal connecting rods are arranged below the latticed shell roof, the temporary horizontal connecting rods are disassembled, and therefore the stability of the latticed shell roof lifting process and the lateral stiffness of the latticed shell roof structure and the lifting support are guaranteed; and then a symmetrical batch unloading mode is adopted, and therefore the overall lateral stiffness of the structure is guaranteed, and the safety and controllability of the construction process are guaranteed.

Description

technical field [0001] The invention belongs to the technical field of large-scale public building construction, and in particular relates to an inverse construction method of a single-layer flat reticulated shell roof structure. Background technique [0002] In large public buildings, a single-layer planar reticulated shell structure is often used as the roof structure. The traditional construction method first constructs the lower floors, and then assembles the roof structure at high altitude. The construction period is long and the high-altitude welding quality is difficult to guarantee. When the single-layer reticulated shell roof is lifted by the reverse method, improper selection of the lifting point will cause the force and shape of the structure after construction to fail to meet the design requirements; the roof structure is supported during the lifting process of the single-layer reticulated shell roof structure The full-height columns are not effectively connecte...

AI Technical Summary

Problems solved by technology

When the single-layer reticulated shell roof is lifted by the reverse method, improper selection of the lifting point will cause the force and shape of the structure after construction to fail to meet the design requirements; the roof structure is supported during the lifting process of the single-layer reticulated shell roof structure The full-height columns in the building do not form an effective connection with the lower floor, the structural system is quite different from the stage of use, and the lateral stiffness of the structure is poor; if the traditional method of overall lifting and then overall grading unloading is adopted, the structure may collapse

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