Steel structure and high-strength bolt friction type connecting method based on particle anti-sliding effect

Abstract

The invention discloses a steel structure and high-strength bolt friction type connecting method based on a particle anti-sliding effect.No special contact surface treatment technology is needed, particles are directly pressed into the part between steel plates connected by high-strength bolts, and then the high-strength bolts are fastened to increase the anti-sliding coefficient of the high-strength bolts.The particles are pressed into the part between the two connecting plates according to the requirements that when the particles are pressed into the part between the plates, deformation can exist while no crack is allowed, and the connecting plates are tightly pressed without a gap.The particles need to meet specific mechanical characteristics and geometric characteristics, and are arranged around bolt holes of the high-strength bolts in a specific mode.According to the steel structure and high-strength bolt friction type connecting method based on the particle anti-sliding effect, the requirement for the surfaces of the connecting steel plates is not high, the particles are directly pressed in to form stable pits on the surfaces of the steel plates, the particles are tightly fixed in the pressed pits with the pretension force of the high-strength bolts, mutual sliding between contact surfaces is prevented through clamping and mutual limiting of the particles and the pits, the anti-sliding coefficient of the connecting contact surfaces of the high-strength bolts is obviously increased, and meanwhile the surface treatment technology of components is efficiently simplified.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a high-strength bolt friction connection method for steel structures based on the anti-slip effect of particles. Background technique [0002] The anti-slip coefficient of the contact surface of high-strength bolts determines the friction of the connected plates. Therefore, when high-strength bolts are used, the contact surfaces of components are usually treated specially to make them clean and rough to improve their anti-slip coefficients. The contact surface treatment methods recommended by my country's current steel structure design codes include: sandblasting (shot), coating inorganic zinc-rich paint after sandblasting (shot), red rust after sandblasting (shot), wire brush to remove floating rust or no treatment . The mature surface treatment process can obtain an anti-slip coefficient of 0.3-0.5, but the panels need to be assembled immediately after sandblasting ...

AI Technical Summary

Problems solved by technology

The mature surface treatment process can obtain an anti-slip coefficient of 0.3-0.5, but the panels need to be assembled immediately after sandblasting to prevent the surface from re-rusting; coating inorganic zinc-rich paint after sandblasting will reduce the anti-slip coefficient of the contact surface, which is suitable for For open-air structures such as bridge engineering rather than high-rise steel structures; red rust after sandblasting needs to consider the influence of rusting time on the friction coefficient, and floating rust needs to be removed during installation. The process is complicated and the cycle is long

Images