Ultra-large span cylindrical surface compound rods giant grid structure

A technology of grid structure and combined rods, which is applied in the direction of building structure and construction, can solve the problems of complex processing structure, increased steel consumption, and overall instability, so as to save steel consumption, reduce project cost, and improve Overall Stiffness and Stability Effects

Inactive Publication Date: 2009-07-08
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of double-layer cylindrical reticulated shell structure will have some inevitable problems with the further increase of the span. For example, when using the usual length rods within 5m, the structure will easily lead to overall instability due to the small thickness-span ratio; When the rod is too long, it is easy to cause the instability of the pressure rod due to excessive internal force, and the resulting inc

Method used

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  • Ultra-large span cylindrical surface compound rods giant grid structure
  • Ultra-large span cylindrical surface compound rods giant grid structure
  • Ultra-large span cylindrical surface compound rods giant grid structure

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0019] Example 1: Combination figure 1 , figure 2 , image 3 , Figure 4 :

[0020] The whole structure is composed of two levels: main structure I and substructure II arranged in the main structure. The main structure is a large grid structure composed of lattice members, and the grid size is 10-30m. The sub-structure is an ordinary double-layer flat-panel grid, and the sub-structure is embedded in the large grid in a four-corner support manner, forming a structure form of a large grid and a small grid. Supports 10 are provided on both longitudinal sides of the main structure of the large grid. The load of the entire structure is borne by the relatively sparse and large main structure, and then is transmitted to the support 10 by the main structure.

[0021] The large grid structure composed of lattice components is formed by hinged connection of lattice composite rods 2 through large-size welded hollow spherical joints 1. The lattice type combined rod of this embodiment is an ...

Example Embodiment

[0022] Example 2: Combination figure 1 , figure 2 , Figure 5 , Figure 6 :

[0023] The difference between this embodiment and embodiment 1 is: the lattice type composite rod of this embodiment is a square cross-section composite rod of equal cross section, its two ends are pyramid-shaped, and the outside of the middle section is composed of 4 long main pipes. The stent is provided with a plurality of square partitions 5 perpendicular to the long main pipe and inclined web rods 6 with an inclination angle of 45 to 55 degrees between the stents.

[0024] The square partition is a square frame composed of four round steel pipes 8 of equal length, and the square frame is connected to the long main pipe 4 through a direct junction. A support rod 9 is added to the quadrilateral frame to prevent motorized deformation of the section.

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Abstract

The invention discloses a super-large span cylindrical combined bar system large grid structure, which comprises a main structure and a substructure which is arranged inside the main structure, and is characterized in that the main structure is a large grid structure which consists of lattice type members, and the grid dimension is between 10 and 30 meters; and the substructure is a common double-layer flat-plate grid rack and is embedded into a large grid in a mode of four-corner supporting to form a structural form of making a small grid sleeved into the large grid. The super-large span cylindrical combined bar system large grid structure can effectively overcome the defect of destabilization of compression bars, greatly improve the overall rigidity and the stability of the structure, avoid destabilization of the compression bars, save the steel consumption, and reduce the manufacturing cost of engineering. Moreover, both combined bars and the flat-plate grid rack substructure can be manufactured and processed in a factory into basic components with small number, conveyed and assembled on the spot into an overall structure, so that the field assembly workload is greatly reduced and the construction period is shortened. The super-large span cylindrical combined bar system large grid structure is suitable for a spatial reticulated shell roof structure with a super-large span of more than 200 meters.

Description

technical field [0001] The invention relates to the field of space structures in the construction industry, in particular to a super large-span cylindrical surface combined bar system giant grid structure. Background technique [0002] In stadiums, convention and exhibition centers, theaters, large shopping malls, factory garages and other buildings, it is a construction project in which the upper part is a large-span space steel structure and the lower part is a reinforced concrete structure. At present, a structural form widely used in large-span spatial structures is the double-layer cylindrical reticulated shell structure. With the development of society, the large-span space will develop towards super-long-span. However, this kind of double-layer cylindrical reticulated shell structure will have some inevitable problems with the further increase of the span. For example, when using the usual length rods within 5m, the structure will easily lead to overall instability d...

Claims

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Application Information

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IPC IPC(8): E04B1/342E04B1/58
Inventor 贺拥军周绪红
Owner HUNAN UNIV
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