Butt joint connecting device and method for large-scale steel pipe columns under circumstance of vibration load

Abstract

The invention relates to a large steel structure building, particularly to a butt joint connecting device and method for large-scale steel pipe columns under the circumstance of vibration load. A steel pipe interface of a large-scale steel pipe support column is usually processed via a butt joint mode, but the butt joint mode for processing has the following defects that the requirement on the welding quality in an interface position is extremely strict, so that quality acceptance requirements are difficult to achieve; the organizational structure of steel pipe column parent materials within the range of 50 mm on the both sides of the steel pipe interface position is changed, and crystal particles are coarsened, so that welding heat influence lines are generated; under the action of the mechanical vibration load, the steel pipe column parent materials in welded junction positions are cracked to cause accidents. In order to solve the technical problems and enable the butt joint welding of the large-scale steel pipe support columns to achieve the requirements on safety, economy and reliability in use, a wave-shaped bushing pipe is mounted in the large-scale steel pipe column interface. The wave-shaped bushing pipe is mounted in the steel pipe column interface, wave shapes at the both ends of the wave-shaped bushing pipe are welded on the inner sides of two steel pipe columns, and the steel pipe column interfaces and the outer side of the wave-shaped bushing pipe are welded together.

Description

technical field : [0001] The invention relates to a large steel structure building, in particular to a large steel pipe column butt joint connection device and method under the condition of vibration load. Background technique: [0002] At present, many industrial plant buildings and civil buildings use steel structures as the main structure. When selecting supporting components for the main structure of some industrial or civil corridors, large steel pipes are often used as supporting columns in consideration of the force balance in all directions of the components. According to the existing processing methods, the steel pipe joints of large steel pipe support columns are usually processed by docking, and the large steel pipe support column joints processed by this docking method generally have the following defects: [0003] 1: The welding quality requirements of the weld seam at the steel pipe joint position of the large steel pipe column are very strict, the workload...

AI Technical Summary

Problems solved by technology

[0003]1: The welding quality requirements of the welds at the steel pipe joints of large-scale steel pipe columns are very strict, the workload of welding slag removal and grinding is very large, and the labor intensity of workers is high;

[0004]2: The quality of the weld seam at the interface of the steel pipe column is often difficult to meet the quality acceptance requirements;

Under the action of vibration load, it is easy to cause the base metal of the steel pipe column at the welding joint to crack, which is unfavorable to the structural stress;

[0006]4: Under the action of mechanical vibration load, the butt position of the steel pipe joint of the steel pipe column is prone to cracking of the welding joint or the base material of the steel pipe column at the welding joint. Under the condition of high-altitude operation, the workload of scaffolding erection is heavy, and the repairing construction is extremely inconvenient. The welding quality of the repairing construction is difficult to meet the acceptance specification requirements, which is easy to cause multiple reworks, and even leads to partial or overall replacement of the main support column, causing great engineering safety hazards

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