'Drip shaped' radial monolayer steel pipe reticulated shell block and installation method

Abstract

The invention relates to a method for partitioning and assembling a 'droplet-shaped' radial single-layer steel pipe grid shell. The method comprises: a southern side grid shell consists of radial steel pipes and a plurality of annular contour steel pipes; the local is provided with a large-area sightseeing window, and a smooth grid shell curved surface is formed; and a northern side grid shell consist of vertical and horizontal steel pipe meshes, and a cambered surface with larger curvature is formed. The method is characterized in that the grid shell is divided into top ring girders, and lower parts of the top ring girders are subjected to grid partitioning along various radial axial lines; projections of the radial axial lines are all radial straight line segments; and after the lower parts of the top ring girders are partitioned according to the radial axial lines, the horizontal position between various blocks can be positioned through main axis pipes on both sides of each block, and the blocks are subjected to filling connection by spare parts. The method has the advantages of effectively solving the problems of lifting and positioning of the 'droplet-shaped' radial single-layer steel pipe grid shell and accumulative errors between grid shells during grid shell assembly, reducing the upper-air welding workload, creating conditions for shortening the duration of a project, saving temporary supporting during grid shell construction, and creating certain economic benefit.

Description

Technical field [0001] The invention relates to an installation method of a construction engineering structure, in particular to a "drop-shaped" radial single-layer steel pipe reticulated shell division and installation method. Background technique [0002] In architectural design, the main plane structure of general buildings is now the main structure, and the general steel structure is generally distributed in the horizontal and vertical directions. It is convenient to connect and install the components during construction. However, there will be difficulties in the installation and construction of the irregular reticulated shell building structure shaped like a "drop shape". First of all, a very high standard is proposed for the installation accuracy of the reticulated shell. The reticulated shell adopts radial steel pipes and several loops of equal height. The shape of each area of ​​the reticulated shell is different. In order to pursue the effect of the large space of publi...

AI Technical Summary

Problems solved by technology

However, difficulties will be encountered in the installation and construction of irregular reticulated shell structures shaped like "drops". First, the installation accuracy of the reticulated shell is set to a very high standard. The reticulated shell adopts radial steel pipes and several ring-shaped contour The shape of each area of ​​the reticulated shell is different; in order to pursue the effect of large space in public buildings, "Y" shaped columns are used to carry out a large area of ​​hollowing out the reticulated shell, so that the structure itself is less rigid when it is not formed as a whole. Difference

For such a special structural form, the previous methods such as overall lifting and high-altitude bulk installation for special-shaped steel structure roof reticulated shells are not applicable. How to install the reticulated shell in place quickly and well will bring new challenges to the construction of irregular "drop-shaped" reticulated shells. Here comes a new challenge

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