Unloading device used for steel structure support and unloading method thereof

Abstract

The invention discloses an unloading device used for a steel structure support and an unloading method thereof. The unloading device used for the steel structure support comprises a lower wedge block, an upper wedge block attached to the tapered wedge face of the lower wedge block and an adjusting assembly used for adjusting the upper wedge block to slide relative to the lower wedge block in the inclination direction of the tapered wedge face, the tapered wedge face of the lower wedge block and the tapered wedge face of the upper wedge block are equal in inclination angle and attached to each other, and the lower wedge block and the upper wedge block are detachably connected through the adjusting assembly. During unloading, the upper wedge block is adjusted by the adjusting assembly to slide downwards relative to the lower wedge block in the inclination direction of the corresponding tapered wedge face, an upper body structure is stressed steadily, a support main beam and the body structure are separated gradually, it is prevented that the upper body structure is stressed excessively, and it can be ensured that the unloading portion is stable in the horizontal direction. The unloading device has the advantages of being convenient to operate, stable in unloading and reusable.

Description

technical field [0001] The invention relates to the technical field of steel structure support construction, in particular to an unloading device for a steel structure support and an unloading method thereof. Background technique [0002] Steel brackets are generally used as temporary support systems in steel structures and suspended concrete projects. After the construction of the main structure is completed, the brackets are in a state of compression. Before removing the brackets, the brackets must be unloaded first, so that the main structure changes from the construction state to the whole. In the stressed state, the unloading construction is generally completed by setting an unloading device between the top of the support column and the main beam of the support. Therefore, the unloading device, as a conversion device before and after the main structure forms an overall force, is of great significance in the process of bracket removal. [0003] At present, there are fou...

AI Technical Summary

Problems solved by technology

There are certain limitations and deficiencies in the four unloading methods: 1. Jack unloading: (1) The jack can only bear vertical loads, and the horizontal direction stability is poor. In the case of horizontal loads, it will bring greater safety. Hidden dangers; (2) more jacks are required, and the cost of temporary equipment is higher; (3) when hydraulic jacks are used, the jacks are loaded for a long time, and hydraulic oil leakage is prone to occur, and the lifting force of the jacks fails, causing the bracket to be dangerous and leaking at the same time Hydraulic oil will pollute the environment

2. Section steel support cutting: (1) The unloading method is destructive cutting, which cannot be used in turnaround and wastes materials; (2) The unloading work requires a large number of welders to perform synchronous operations, and the safety is poor; (3) The unloading section steel is in the cutting process The vertical load borne in the center must be released, and there is a safety risk in the cutting operation

3. Steel plates are installed on the top of the frame: (1) The unloading space is small, and the unloading operation is difficult; (2) According to the adjustment requirements of the top of the support, the backing plate generally needs to be multi-layered, and there are sliding surfaces between the steel plates of each layer, which is stable to the support sex has a greater impact

4. Sand box unloading: (1) It is generally used in situations where the contact area is large and the load is large; (2) The structure of the sand box is complex and the processing is difficult; (3) The sand used in the sand box needs to be dried, Preloaded, inconvenient to use

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