High-strength bolt friction-type connecting structure and connection node performance optimizing method thereof

Abstract

The invention relates to a high-strength bolt friction-type connecting structure and a connection node performance optimizing method thereof. The high-strength bolt friction-type connecting structure comprises a plurality of steel beams and connecting cover boards; an aluminium-sprayed layer is arranged on the outer surface of each connecting cover board; the connecting cover boards are respectively and fixedly arranged on a plurality of abutted steel beams by bolts; paint-sprayed layers are arranged at the joints of the steel beams; the connecting cover boards cover the paint-sprayed layers. The high-strength bolt friction-type connecting structure has the benefits that friction surfaces between the paint-sprayed layers increase friction coefficients and anti-sliding coefficients of the connecting cover boards and the steel beams to be connected so as to improve shear resistance of connection nodes; thermal spraying of aluminium has the effect of protecting a steel and iron matrix again, so that the connection nodes have strong integral corrosion resistance; aluninium is a metal with strong activity and is very easy to combine with oxygen to generate a compact and hard oxide protection layer, so that an aluminium coating is effectively prevented from being further oxidized, has a longer protection period, does not need to be repaired and maintained all the year round, and avoids waste of labor cost.

Description

technical field [0001] The invention belongs to the field of steel structure construction, in particular to a high-strength bolt friction connection structure and a performance optimization method for connection nodes thereof. Background technique [0002] At present, the high-strength bolt friction connection joint is one of the most common bolted joint forms in building steel structures. In general, there are four different treatment methods for the component contact surface of the high-strength bolt friction connection joint, and the corresponding anti-slip coefficients are also different, but the overall value is relatively small. Because the anti-slip coefficient is not high, the shear bearing capacity of the high-strength bolt friction connection joints currently used is not high, which cannot meet the requirements of some special projects. Moreover, the corrosion resistance of these connection nodes is poor, and the contact surfaces of the connection members are pron...

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Problems solved by technology

[0003] The problem to be solved by the present invention is to provide an optimization method for improving the shear bearing capacity and anti-corrosion performance of high-strength bolt friction connection joints, aiming to solve the problem of insufficient shear bearing capacity, poor corrosion resistance, and long-term maintenance. Defects that cause waste, etc.

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