Bolt shear force connecting piece and method for enhancing shear strength by use of spring

Abstract

The invention discloses a bolt shear force connecting piece and a method for enhancing shear strength by use of a spring. The bolt shear force connecting piece comprises a screw cap, a screw rod, threads, nuts, screw pads and a spring, wherein the screw rod passes through a hole preformed in a steel beam flange and then is fastened on the steel beam flange by virtue of the upper and lower nuts; the screw pads are arranged between the lower surface of the steel beam flange and the nuts; the top end of the screw rod is provided with the screw cap; the spring is arranged around the screw rod; a circle of spring part at the bottom of the spring and the surface of the steel beam flange are welded; the height of the top surface of the spring is flush with that of the screw rod, and the screw rod is positioned in the inner center of the spring. The spring arranged at the periphery of the bolt connecting piece can be used for enhancing the rigidity and shear resistance of the shear force connecting piece; bolted connection is adopted for replacing common welded type connection, so that the process is simple, the construction operation is convenient, manpower, material resources and time are saved, and furthermore the connecting quality can be ensured easily. The bolt shear force connecting piece is applicable to structure systems such as a bridge span and a building floor system, and is used for connecting a steel beam with concrete.

Description

technical field [0001] The invention relates to a novel structure in construction engineering, in particular to a bolt shear connector and a method for enhancing shear strength by using a spring. Background technique [0002] Steel-concrete composite beams give full play to the advantages of good tensile properties of steel and high compressive strength of concrete, and have excellent mechanical properties and high economic efficiency. At present, steel-concrete composite beams are widely used in bridges and buildings, and their performance advantages and economic benefits are constantly being reflected. In the steel-concrete composite beam, the shear connection between the steel beam and the concrete surface plays the role of combining the two materials, and is a key component in the composite beam. Nowadays, a kind of welded stud shear connection is widely used in the engineering field. The shear connection has a simple structure (including the nail head, nail rod, and th...

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Problems solved by technology

[0006] 2) The quality of the weld seam is greatly affected by human factors, and it is difficult to guarantee, which will affect the safety and reliability of the composite beam

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