Single-side bolt connecting beam column anti-progressive-collapse reinforcing joint and construction method thereof

Abstract

The invention discloses a single-side bolt connecting beam column anti-progressive-collapse reinforcing joint and a construction method thereof. The reinforcing joint comprises a rectangular steel pipe column, an H-shaped steel beam, a beam end outer extending end plate, an upper rectangular hoop and a lower rectangular hoop. The beam end outer extending end plate is fixedly connected to the end of the H-shaped steel beam, and is fixedly connected with the rectangular steel pipe column through one-way locking high-strength bolts; the upper rectangular hoop and the lower rectangular hoop sleevethe upper end and the lower end of the beam end outer extending end plate respectively and tightly press the upper end and the lower end to the rectangular steel pipe column; the upper rectangular hoop and the lower rectangular hoop are fixedly connected with the rectangular steel pipe column and the beam end outer extending end plate through one-way locking high-strength bolts. All-bolt connection is used on site, so that the steel beam is convenient to locate and construct, no weld joint exists on site, industrialized prefabrication and on-site assembly are facilitated, and field construction efficiency is improved; discontinuous beams are connected into a whole, the integrity of the structure and the ductility of the joint are improved, and under the progressive collapse working condition, a catenary effect can be formed; the progressive collapse resistance of the structure under the action of an accidental load is improved.

Description

technical field [0001] The invention relates to construction engineering, in particular to an anti-continuous collapse reinforcement node connected by a single-side bolt to a rectangular steel pipe column-H-shaped steel beam and a construction method thereof. Background technique [0002] The progressive collapse of a structure refers to the initial local damage of the structure due to the occurrence of accidental events under normal service conditions, and the damage propagates to other parts, eventually causing large-scale damage that is disproportionate to the initial local damage or even the entire structure. Sexual collapse and destruction. Once the continuous collapse occurs, it will cause serious loss of life and property, and produce bad social impact. Therefore, how to reduce the impact of local failure on the overall structure and prevent the continuous collapse of the structure due to local failure has received great attention from researchers. [0003] With the...

AI Technical Summary

Problems solved by technology

Although there are various connection forms, there are certain defects in them: the connection of core bolts and end plates requires special long-strength high-strength bolts through the cross-section of the column, which requires very high processing and construction precision and reduces construction efficiency; connector-type joints High-strength bolts are used for the flange of the beam. Although the ductility and seismic performance of the joints are improved, and the amount of on-site welding is reduced, which is beneficial to on-site installation and construction, the steel pipe column is prone to local buckling of the column wall because there is no internal diaphragm in the steel pipe for force transmission.

[0005] However, the safety reserve of the structure under the action of special loads is low. Once subjected to special loads such as explosions, earthquakes, or vehicle impacts, it is very easy to cause the loss of the bearing capacity of key load-bearing columns or key nodes, and then lead to continuous collapse.

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