Self-resetting rotating joint connecting structure and assembling method for prefabricated concrete frame beam column

Abstract

The invention provides a self-resetting rotating joint connecting structure and assembling method for a prefabricated concrete frame beam column. A prefabricated reinforced concrete column and a prefabricated reinforced concrete beam of the connecting structure are perpendicular to each other and are connected through cooperation of an L-shaped constraint steel plate key and an L-shaped rotating steel plate key, the L-shaped rotating steel plate key and the L-shaped constraint steel plate key are fixed through a constraint friction base plate, and an unbonded prestressed tendon transversely penetrates through a whole formed by the prefabricated reinforced concrete column and the prefabricated reinforced concrete beam and is fixed at the end through a plurality of prestressed tendon anchorage devices. The technical problems of how to effectively improve the energy dissipation capacity of a joint and reduce damage and destruction of the structure under the earthquake action to the maximum extent are solved. According to the self-resetting rotating joint connecting structure and assembling method for the prefabricated concrete frame beam column, connection between the prefabricated concrete beam and the prefabricated concrete column is achieved, under the strong earthquake action, when the prefabricated concrete beam reaches the controllable maximum rotating position, the self-resetting effect is achieved, and the prefabricated beam column is restored to the original initial state after an earthquake.

Description

technical field [0001] The invention relates to an assembled concrete frame beam-column self-resetting rotating node connection structure and an assembly method, belonging to the technical field of assembled concrete buildings. Background technique [0002] As one of the important development directions in the field of architectural structures in the 21st century, prefabricated concrete structures have been rapidly promoted in my country's construction industry due to their advantages of energy saving, environmental protection, convenient construction, and high degree of industrialization. At present, in this research field, the academic and engineering circles are focusing on how to safely, efficiently and reliably improve the seismic performance of the joints of prefabricated structural nodes and avoid unnecessary structural damage and destruction. [0003] In traditional prefabricated concrete structures, in order to achieve the goal of "equivalent to cast-in-place" for t...

AI Technical Summary

Problems solved by technology

Experimental research and numerical simulation results show that this type of connection can ensure the stiffness and bearing capacity of the joint connection area, and the force is reliable, but the energy consumption is poor, and the grouting is prone to brittle failure under repeated earthquake loads

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