Building steel box girder external prestress buffering device and construction technology

Abstract

The invention relates to the technical field of buffering devices, in particular to a building steel box girder external prestress buffering device and a construction technology, the building steel box girder external prestress buffering device comprises a plurality of telescopic pipes and two connecting end frames, a plurality of telescopic auxiliary pipes are installed between the two connecting end frames, and the telescopic pipes and the telescopic auxiliary pipes are connected with the connecting end frames through a plurality of connecting assemblies; a plurality of front seat sleeves and a plurality of rear seat sleeves are fixedly connected to the two connecting end frames respectively, strip holes are formed in the front seat sleeves and the rear seat sleeves respectively, a grid frame assembly is arranged between the front seat sleeves and the rear seat sleeves, two connecting rods are arranged in the grid frame assembly, the two connecting rods are inserted into the two strip holes respectively and provided with elastic assemblies respectively, positioning bolts are connected to the front seat sleeve and the rear seat sleeve, the stress buffering effect is good, use is reliable, sundries are not prone to entering gaps in the grid frame assembly, the buffering effect is stable after long-term use, and meanwhile the overall structure of the grid frame assembly is convenient to disassemble and assemble, easy to maintain and good in practicability.

Description

technical field [0001] The invention relates to the technical field of buffer devices, in particular to an external prestressed buffer device for a building steel box girder and a construction process. Background technique [0002] As we all know, building steel box girder is a commonly used structural form of large cross-border bridges. It is generally connected by roof, bottom plate, web, transverse diaphragm, longitudinal diaphragm and stiffeners, etc., in which the roof is made of The orthotropic bridge deck composed of cover plate and longitudinal stiffener is called steel box girder because it looks like a box. [0003] Because building steel box girders are generally used on bridges with large spans, steel box girders are generally designed according to the length of the construction site, and then transported and welded at the bridge construction site. Large, so there are many welds in the building steel box girder body, and the welding between multiple sections is ...

AI Technical Summary

Problems solved by technology

[0004] However, when the above-mentioned external prestressed buffer device is in use, the transverse parallel stress buffering effect between two adjacent building steel box girders is better, but the stress buffering effect in other directions is relatively weak, and the reliability of use is poor. It is easy to accumulate debris between multiple anti-fall bars or in the telescopic grate, and long-term use will easily affect the stress buffering effect. Therefore, frequent cleaning is required to ensure the buffering effect. At the same time, the overall structure is easy to disassemble. Once any parts are damaged, they can be replaced quickly. Maintenance is relatively simple and practical

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