A prefabricated bearing capacity and stiffness independent control node

Abstract

The invention relates to an assembled bearing capacity and stiffness independent control node, which includes a concrete column, a concrete beam, a connection module and a damper module. One end of the concrete column is provided with a column cover plate, and the column cover plate is provided with a plurality of bolt bolts; the connection module includes the column outer end plate connected with the bolt bolt bars, and the sides of the column outer end plate are connected by the column outer cover plate , the supporting section steel is arranged between the outer end plates of the column; the connecting plate of the column end and the ear plate of the column end are arranged on the outer sealing plate of the column. One end of the concrete beam is provided with a beam end plate, and the beam end plate is provided with a beam end ear plate connected with the column end ear plate; the damper module is connected with the column end plate and the beam end plate; the damper module is provided with multiple lengths Different rectangular vias. By adjusting the gaps and side lengths between multiple rectangular through holes, buckling energy dissipation sections with different aspect ratios are constructed to reduce the peak value of the nonlinear bearing capacity of the nodes, and the thickness of the damper module is adjusted to adjust the stiffness of the nodes to achieve node stiffness and load bearing power independent regulation.

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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