Abstract
Prefabricated construction is a structural form vigorously developed by the country and is the inevitable path for the sustainable development of the construction industry. In order to enhance the seismic performance of prefabricated concrete frame structures, concealed steel angle connections for prefabricated frame beams and columns are employed. Based on experimental research on the force performance of these connection nodes, a finite element model of the connection node is established using ABAQUS software to analyze the influence of design parameters on the force performance of the specimen. The analysis indicates that upgrading the concrete grade from C25 to C55 increases the positive bearing capacity by 12.3 %. The specimen’s energy dissipation capacity and stiffness are both improved. Increasing the thickness of the steel cover plate can enhance the specimen's bearing capacity, stiffness, and energy dissipation capacity. Increasing the angle steel thickness from 4 mm to 10 mm results in a 27.78 % increase in negative bearing capacity, consequently enhancing the specimen’s energy dissipation capacity. By increasing the bolt diameter from 16 mm to 24 mm, the positive bearing capacity increases by 8.2 %, and the negative bearing capacity increases by 10.9 %. The energy dissipation capacity and stiffness of the specimen also improve accordingly.
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