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In Ecuador, the use of steel structures has grown significantly in recent decades due to the many benefits this material offers. However, the scarcity of local research on steel beam-column connections has generated a certain degree of informality in the construction sector, leaving the structural design to engineers or workers without clear normative support. In addition, the connections between structural elements are fundamental to guaranteeing adequate seismic-resistant behavior in steel buildings. In this context, this study analyzes a new configuration of non-prequalified connections, evaluating a BFP connection between I beams and HSS columns to determine its seismic performance and its potential to be standardized in steel constructions. Therefore, a numerical analysis was carried out using ANSYS Workbench software and applying the finite element methodology. The connections were modeled and analyzed under cyclic loading protocols according to FEMA 350, obtaining purely theoretical results. The findings include drift deflection angles, hysteresis diagrams, and dissipated energy, among others. When comparing the proposed connection with a standard prequalified connection, it was observed that the new configuration reduces the column weight by 33.04%, dissipates about 11.94% more energy, and improves the seismic resistant performance by 2.51% compared to the plastic moment. Thus, it was concluded that the proposed connection presents better performance under cyclic loads, and it is feasible to be subjected to experimental tests for prequalification. In future research, it is recommended to do laboratory tests, explore configurations with concrete infill, and continue analyzing new non-prequalified beam-column connections to strengthen structural knowledge and promote safer construction standards in Ecuador.

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Analysis of the Behavior of HSS Column Connections and IPE Beams with Internal Continuity Plates Compared to Prequalified BFP Connections in Moment Frames Under Seismic Loads Using the Finite Element Method (FEM)

  • 会议论文

  • 发表日期：

    2026年

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  • Sánchez Manuel,
  • Guamán Mauricio

摘要

In Ecuador, the use of steel structures has grown significantly in recent decades due to the many benefits this material offers. However, the scarcity of local research on steel beam-column connections has generated a certain degree of informality in the construction sector, leaving the structural design to engineers or workers without clear normative support. In addition, the connections between structural elements are fundamental to guaranteeing adequate seismic-resistant behavior in steel buildings. In this context, this study analyzes a new configuration of non-prequalified connections, evaluating a BFP connection between I beams and HSS columns to determine its seismic performance and its potential to be standardized in steel constructions. Therefore, a numerical analysis was carried out using ANSYS Workbench software and applying the finite element methodology. The connections were modeled and analyzed under cyclic loading protocols according to FEMA 350, obtaining purely theoretical results. The findings include drift deflection angles, hysteresis diagrams, and dissipated energy, among others. When comparing the proposed connection with a standard prequalified connection, it was observed that the new configuration reduces the column weight by 33.04%, dissipates about 11.94% more energy, and improves the seismic resistant performance by 2.51% compared to the plastic moment. Thus, it was concluded that the proposed connection presents better performance under cyclic loads, and it is feasible to be subjected to experimental tests for prequalification. In future research, it is recommended to do laboratory tests, explore configurations with concrete infill, and continue analyzing new non-prequalified beam-column connections to strengthen structural knowledge and promote safer construction standards in Ecuador.