Locating slip support of large-span space structure

Abstract

The invention discloses a limit gliding bearing of a large-span space structure, comprising a cubic limit box at the lower part of the bearing, an additional gliding plate arranged in the cubic limit box and a plate bearing arranged on the additional gliding plate, wherein, the cubic limit box is composed of a square base plate, 4 limit stop plates at the periphery of the square base plate and 4 small cover plates which cover the 4 corners of the 4 limit stop plates which are all welded together; the plate bearing is composed of a vertical supporting tube which is welded at the middle part of the base plate and 4 cross-shaped vertical supporting stiffening plates which are welded at the periphery of the vertical supporting tube; clearance size of the square base plate of the cubic limit box is larger than the size of the base plate of the plate bearing, and horizontal slip of the plate bearing is the difference between the clearance size of the cubic limit box and the size of the base plate of the plate bearing. In the invention, the plate bearing is allowed to have relatively large horizontal displacement, thus effectively releasing thermal stress, reducing horizontal thrust of the plate bearing on the lower structure of the limit gliding bearing, effectively reducing use amount of steel and lowering construction cost; meanwhile, in the invention, weakening on the base plate of the limit gliding bearing by opening anchor bolt holes is avoided, the structure is simple and the installation is convenient.

Description

technical field [0001] The invention relates to the field of space structures in the construction industry, in particular to a non-anchor-bolt limiting sliding support for a large-span space structure. Background technique [0002] Large-span space structures are widely used in stadiums, convention and exhibition centers, theaters, large shopping malls, industrial plants and other buildings. on the substructure. In the prior art, in order to release the temperature stress and reduce the horizontal thrust of the lower support to the lower structure, the bolt holes on the bottom plate of the flat support are generally enlarged, resulting in a certain gap between the bolt and the hole wall, so that the support A certain amount of horizontal slip can occur between the seat and the supporting structure. Then, there are the following problems in the plate support that increases the bolt aperture so as to release the temperature stress: 1) the base plate of the support is weakene...

AI Technical Summary

Problems solved by technology

In the prior art, in order to release the temperature stress and reduce the horizontal thrust of the lower support to the lower structure, the bolt holes on the bottom plate of the flat support are generally enlarged, resulting in a certain gap between the bolt and the hole wall, so that the support There can be a certain level of sliding between the seat and the supporting structure

Then, there are the following problems in the plate support that increases the bolt aperture so as to release the temperature stress: 1) the base plate of the support is weakened to a certain extent when the bolt aperture is increased; 2) the increase of the bolt aperture has a certain limit, The general hole diameter is 2 to 2.5 times the bolt diameter, so the horizontal displacement that the support can produce is very limited

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