An installation method for a curved steel reticulated shell structure with a gradual change in the starting span of the gable wall

Abstract

The invention discloses a method for installing a curved steel reticulated shell structure with a gable starting span gradually changing, comprising the following steps: a. construction preparation; b. assembling block by block; c. installing a purlin system and a roof panel structure. The invention realizes the connection between the steel wire rope and the ball joint through the steel wire rope pulling device, ensures the stability of the steel wire rope pulling and setting, prevents the steel wire rope from sliding, ensures the verticality of the vertical gable structure, and avoids the rods of the reticulated shell structure during the steel wire rope pulling. At the same time, in the present invention, the ball joints inside the gable reticulated shell unit are supported by the temporary fixing device to increase the construction safety performance, and the temporary fixing device can also eliminate the influence of the site flatness error on the installation accuracy, which is more conducive to the ball joints The installation and construction between temporary fixtures are convenient for construction and operation, flexible and convenient for on-site construction, easy to adjust accuracy errors, high construction efficiency, guaranteed installation quality, reduced safety hazards for high-altitude operations, and reduced construction costs.

Description

technical field [0001] The invention belongs to the technical field of a curved steel reticulated shell dry coal shed structure, and in particular relates to a method for installing a curved steel reticulated shell structure with a gradual change in the starting span of a gable wall. Background technique [0002] With the continuous development of my country's industry, the construction market of industrial buildings such as large-span workshops and dry coal sheds continues to expand. The reticulated shell structure has high rigidity, small structural deformation, high stability, and material saving; it can be formed in the shape of the building. A variety of curved surfaces; easy and fast installation, mature and convenient calculation mode, etc., are widely used in this type of construction projects, among which the single-layer three-center circular curved reticulated shell with bolt ball joints as the main connection method is more common. This type of project often needs...

AI Technical Summary

Problems solved by technology

This type of project often needs to be constructed on the actual coal mine material stacking site without affecting its normal operation. Therefore, it is difficult to realize the hoisting in the airport under the actual material stacking and concrete coal retaining wall arrangement at the site; When the span of the shell gradually changes, the sliding method cannot be used for construction, so it is more appropriate to use the high-altitude bulk solution for hoisting

[0003] When the connection section between the structure and the end face of the gable wall presents a gradual change in span, the following problems are likely to occur during the actual construction process: 1. The verticality of the vertical gable wall structure must be ensured during the construction process and the subsequent process of the bulk reticulated shell unit; 2. In the upper and lower string ball nodes of the grid unit, only the outer balls are connected with the concrete structure by embedded supports, and the remaining inner balls need to be provided with temporary support frames for stable support during the construction process. It is difficult to control the positioning accuracy of the inner balls and the efficiency is low; ③High-altitude bulk The installation sequence of the process has a more complicated effect on the structural load and deflection

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