Fuyin Guo

1. Introduction With the urgent need for green and sustainable development, the advancement of intelligent buildings, and the improvement of human expectations for the living environment, the technology of prefabricated buildings has been gradually improved [1]. In the prefabricated building, the connection of the node structure is the key problem, the steel bar is the main connecting link, and the connection mode of the steel bar has become the core technology of the node connection.

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