Fabricated joint achieving independent adjustment and control of bearing capacity and rigidity

Abstract

The invention relates to a fabricated joint achieving independent adjustment and control of the bearing capacity and the rigidity. The fabricated joint comprises concrete columns, a concrete beam, a connecting module and a damper module. A column cover plate is arranged at one end of each concrete column, and multiple bolt tightening rods are arranged on the column cover plates. The connecting module comprises column outer end plates which are connected with the bolt tightening rods. The side edges of the column outer end plates are connected through column outer sealing plates, and supportingsection steel is arranged between the column outer end plates. Column end connecting plates and column end lug plates are arranged on the column outer sealing plates. A beam end plate is arranged atone end of the concrete beam, and a beam end lug plate which is connected with the column end lug plates is arranged on the beam end plate. The damper module is connected with the column end plates and the beam end plate. Multiple rectangular through holes with different lengths are formed in the damper module. The gaps between the multiple rectangular through holes and the side lengths of the rectangular through holes to build buckling energy consumption sections with different length-width ratios, the non-linear bearing capacity peak value of the joint is reduced, the thickness of the dampermodule is adjusted to adjust the rigidity of the joint, and the independent adjustment and control of the rigidity and the bearing capacity of the joint are achieved.

Description

technical field [0001] The invention relates to the technical field of assembly-type node design, in particular to an assembly-type bearing capacity and stiffness independent control node. Background technique [0002] In the prior art, the prefabricated concrete structure has the advantages of high production efficiency, fast construction speed, good component quality, resource saving and environmental protection. However, the investigation of historical earthquake damage shows that the severe damage of existing prefabricated concrete structures in earthquakes is mostly caused by node failure. Therefore, in prefabricated concrete structures, the mechanical properties of joints and their plastic development play an important role in the seismic performance of the structure. [0003] In prefabricated concrete structures, traditional prefabricated "dry joints" mainly use additional prestressed tendons, additional dampers, and joints are welded or bolted by steel plates. This...

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Problems solved by technology

[0005] In prefabricated concrete structures, the "dry joints" in traditional prefabricated joints are mainly structural additional joints, which affect the effective use of building structural space, and concrete beams are prone to serious damage under earthquake action

In addition, due to the huge difference in material properties between steel and concrete, traditional steel connection nodes in precast concrete structures often reduce the joint bearing capacity by sacrificing joint stiffness, resulting in joint bearing capacity and stiffness that cannot be independently adjusted, which is not conducive to the traditional precast concrete structure. Lateral stiffness under earthquake action

Traditional prefabricated joints suitable for precast concrete structures are difficult to achieve plastic position control during earthquakes, and difficult to disassemble and replace after earthquakes

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