Split type bolt and manufacturing and application thereof

Abstract

The invention discloses a split type bolt. The split type bolt comprises a bolt cap and a screw rod. The bolt cap is composed of a plurality of bolt cap split parts, the screw rod is composed of a screw rod base part and a plurality of screw rod split parts, a gap is formed between every two adjacent bolt cap split parts and is filled with filling materials, and a gap is formed between every two adjacent screw rod split parts and is not filled with the filling materials. The invention further provides a manufacturing method of the split type bolt, an incomplete through seam is cut from the bolt cap to the screw rod of the high-strength bolt through a machine tool, and filling materials are arranged in the through seam formed in the bolt cap. The invention further provides application of the split type bolt, the base portion of the screw penetrates into a perforated steel plate or a steel / concrete beam and is fastened through a gasket and a nut, and ductility is improved while the shear bearing capacity is improved. According to the split type bolt and manufacturing and application thereof, the shear strength of the bolt is greatly improved by increasing the diameter of the screw rod, and good ductility is kept through bending deformation of the split parts. According to the split type bolt and manufacturing and application thereof, the stress performance is good, construction is easy and fast, demounting is convenient, and the requirement for connection of high-strength steel or ultra-high-performance concrete is better met.

Description

technical field [0001] The invention belongs to the technical field of construction, in particular to a split bolt and its production and application. Background technique [0002] Steel-concrete composite structures are widely used in engineering because of their good mechanical properties, convenient construction methods and good comprehensive benefits. As a key component, the shear connectors directly affect the overall performance of the composite structure. As one of the important types of shear connectors, high-strength bolts have the advantages of high strength, high rigidity, tight connection, easy installation, and detachability, and are the preferred connectors. [0003] As the main form of engineering structure connection, bolt connection is widely used in the on-site installation of fabricated steel structures and composite structures. However, the trend of high strengthening and assembly of building structures puts forward higher requirements on the performanc...

AI Technical Summary

Problems solved by technology

However, the trend of high strengthening and assembly of building structures puts forward higher requirements on the performance of connections and joints. With the increasing application of high-strength steel and ultra-high performance concrete in construction engineering, the current shear connectors may not be able to bear the burden. With the increased shear stress, brittle failure is likely to occur

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