Cross-shaped steel rib column full-bolt rigid connection joint and construction method

Abstract

The invention provides a cross-shaped steel rib column full-bolt rigid connection joint and a construction method. A cross-shaped steel rib column, a steel beam and corresponding connecting parts are prefabricated and machined in a factory in advance, the on-site welding construction workload is reduced, only bolts need to be adopted for assembling on site, rapid installation and screwing can be achieved through the high-strength bolts, bulk assembling of connecting plates is avoided, construction is convenient, efficiency is high, time and labor are saved, the risk of high-altitude welding operation is greatly reduced, and the core concept of green buildings and green construction in China is met. The cross-shaped steel rib column and the steel beam are mainly stressed components, the section integrity is kept, no bolt hole is formed in the section, no section is weakened, meanwhile, the connecting pieces can achieve design standardization and manufacturing standardization, and the industrial construction level is further improved. The joint belongs to strong-joint weak-rod piece connection, the defects of a traditional rigid connection joint are overcome, and the joint is supplementary extension of a beam column rigid connection joint in a national standard atlas 16G519.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a full-bolt rigid connection node of a cross-shaped steel frame column and a construction method. Background technique [0002] With the introduction of steel structure building industrialization and prefabricated building policies, green buildings and building materials have been widely promoted, steel structures and prefabricated buildings have been vigorously developed, the level of mechanized construction has been significantly improved, and the level of construction industrialization has been effectively improved. [0003] At present, more and more high-rise buildings use steel structures as their main structures, and cross-shaped steel columns are widely used as the main force-bearing components of multi-storey, high-rise and super high-rise buildings due to their high bearing capacity, high stability and strong rigidity. . In the frame structu...

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Problems solved by technology

[0005] When bolted and welded joints and all-welded joints are installed on site, traditional penetration welding is used, which easily leads to large welding residual stress on the steel, making the steel at the joints prone to delamination or brittle failure; and the on-site welding workload is large, Affected by factors such as the technical proficiency of on-site welders and the welding environment, it is difficult to effectively guarantee the welding quality, which has a great impact on the mechanical properties of the joint joints, and the weld seam has poor anti-corrosion durability, burying safety hazards for the mechanical performance of the joint joints; At the same time, according to GB50661 "Steel Structure Welding Code", on-site welding inspections are required, such as weld appearance quality inspection, ultrasonic inspection of weld internal defects, etc., which will increase the cost accordingly; and for the web connection plate, its weight is large and installation Difficult, low installation efficiency, laborious installation process and potential safety hazards

However, the full-bolt connection needs to open holes in the components during the manufacturing process, which requires a large amount of manufacturing work, and the bolt holes opened in the steel beam flange and web will weaken the component section.

[0006] 16G519 "Multiple and high-rise civil building steel structure joint structure details" records as follows Figure 10 The beam-column rigid connection joint form of the column corbel shown in the figure is that the cantilever beam section is fully welded or bolted to the column and the middle beam section, and the length of the cantilever beam section protruding from the column center line is greater than or equal to the beam height. Welding is completed, which will cause the problem of difficulty in transporting components and high transport costs

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