High altitude suspension selecting bulk construction method of barrel shell type bolt ball node network frame

Abstract

The invention relates to a small assembling unit high suspending construction method for cylinder casing type bolt ball node grid. The cylinder casing type bolt ball node grid is divided into a plurality annuluses in longitudinal direction according to the support condition, a steel pipe scaffold is arranged in any one annulus, an upper net casing of the annulus is assemble on the annulus by a bulk method, and the scaffold is dismounted after the assembly is qualified; a second annulus is constructed by the small assembling unit high suspending method from the assembled first annulus, and the annulus is assembled one by one along the longitudinal direction, after the bolt balls on the lower boom loop wire in the annuluses are mounted in order, the bolt balls on adjacent upper boom loop wire are mounted in order, each bolt ball and a longitudinal boom, an annular boom and two web members are put together to form a one-ball-four-rod member on the ground before assembly, and then the formed members are suspended by crane to proper positions in the air to be connected to the bolt balls mounted on the periphery. The method of the invention is safe, flexible, convenient, fast, and has low cost.

Description

Technical field: [0001] The invention relates to a high-altitude cantilever bulk construction method for a cylindrical shell type bolt ball node grid structure used in the construction of a cylindrical shell type bolt ball node grid structure. Background technique: [0002] A steel pipe truss engineering design of a cylindrical shell structure is: a pipe truss structure with a span of 60.15m and a length of 242.50m (temperature zones are set at 120.9m), with a steel consumption of about 1400T, material costs and steel pipe production and installation costs (bending pipes, assembly , hoisting, etc.) and other projects cost more than 10 million yuan, and the construction of the pipe truss structure is not only expensive but also difficult to construct. [0003] At present, there are three construction schemes for the shell-type bolted ball joint grid structure: one is to use steel pipe scaffolding in the plane of the grid to set up a full scaffolding, and to assemble the grid ...

AI Technical Summary

Problems solved by technology

[0002] A steel pipe truss engineering design of a cylindrical shell structure is: a pipe truss structure with a span of 60.15m and a length of 242.50m (temperature zones are set at 120.9m), the amount of steel used is about 1400T, and the cost of materials and steel pipe production and installation (bending pipe, assembly , hoisting, etc.) and other projects cost more than 10 million yuan, and the construction of the pipe truss structure is not only expensive but also difficult to construct

[0003] At present, there are three construction schemes for the shell-type bolted ball joint grid structure: one is to use steel pipe scaffolding in the plane of the grid to set up a full scaffolding, and to assemble the grid shell in bulk on it, which requires more labor and a long construction period; Set up two vertical scaffoldings on the inner side, on which the reticulated shells are installed in bulk from the support, and the rest are assembled on the ground in blocks, and then hoisted to high altitude to connect with the installed reticulated shells. Many, high-quality personnel; the third is to set up two longitudinal scaffolds along the inner side of the support, install the reticulated shell in bulk from the support, and then hang other grids in bulk on it, gradually approaching the reticulated shell. At the top, this method takes up a long time for the pole material and the work site, and requires high scaffolding erection

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