A kind of large-span outer four-cut edge double-roof laminated reticulated shell system with elliptical inner opening and its application

Abstract

The invention discloses a large-span, four-trimmed, double-roof superimposed reticulated shell system with an elliptical inner opening and its application, including a high reticulated shell, a low reticulated shell, connecting webs between reticulated shells, a closed truss, and a steel support cylinder. The high and low reticulated shells are relatively superimposed to form a central support structure. They are all four-corner reticulated shells formed by the radial floor-to-ceiling arc-shaped pipe trusses through rotation array, radial translation, and ring-shaped pipe truss connections. There is a quasi-elliptical opening; the connecting webs between the reticulated shells are located in the plane overlapping area of ​​the high and low reticulated shells; the closed truss is located at the intersection of the four trimming sides outside the high and low reticulated shells; support. The invention is based on the superimposed overall stress mode of high and low reticulated shells, and through the enclosure of the closed truss and the vertical support of the steel support cylinder, the component composition modules are clear, the force transmission is clear, and it has the characteristics of high overall rigidity and high bearing capacity , a wide range of applications.

Description

technical field [0001] The invention belongs to the technical field of structural engineering, and in particular relates to a large-span outer four-trimmed double-roof superimposed reticulated shell system with elliptical inner openings. A large span refers to a span not less than 60 meters. Background technique [0002] The pipe truss system is a new type of space long-span truss structure system, which belongs to the category of rigid structures. It is generally composed of a large cross-section main pipe that runs through it and multiple small cross-section branch pipes that are welded and connected to it and arranged regularly. Because of its lightness, reasonable stress, high rigidity and beautiful appearance, it is mainly used in the roof structure system of large-span space buildings such as stadiums, airport terminals and exhibition halls. [0003] The floor arc tube truss system is one of the more important spatial long-span structural forms. In actual engineering...

AI Technical Summary

Problems solved by technology

When the space span is large, the height of the single-layer reticulated shell system and the size of the components will also be large, which makes it difficult for the rigidity and deformation deflection of the structural system to meet the requirements of the code, and also brings great difficulties to the construction hoisting and welding operations.

Due to the dense components and heavy weight of the multi-layer reticulated shell system, the structure occupies a large space, the nodes are complicated, and the light transmission of the building is poor, etc., and its application is also greatly restricted.

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