Scholarlink

<p>Beam-column joints play a critical role in the structural integrity of reinforced concrete frame constructions, as they facilitate the transfer of moments and forces between beams and columns in different bays and storeys. Beam-column joints significantly impact the overall behaviour of the structure under gravity and lateral loads. While several strengthening approaches for beam-column joints have been investigated in previous studies, limited attention has been given to their monotonic load performance when joints are externally reinforced with steel plates, especially considering variations in plate placement and thickness within the joint region. In this study, a total of 15 beam-column joints with different topologies, with and without transverse reinforcement, are modelled using ANSYS APDL 2024 R1 (ANSYS Parametric Design Language) software to analyse their behaviour under increasing load until failure. Additionally, beam-column joints with steel plates 50&#xa0;mm and 25&#xa0;mm thick applied externally to the column, beam, and entire joint are also analysed to assess their strengthening effect and corresponding ductility index. The test results reveal that the application of externally applied 50&#xa0;mm and 25&#xa0;mm thick steel plates on the joint without transverse reinforcement leads to an increase in load-carrying capacity by 26.5% and 20.5%, respectively. In the case of joints with transverse reinforcement, the steel plates enhance the load-carrying capacity by 6.1% and 8.18%, respectively. Additionally, it was observed that steel plates applied only on the column region performed better that those applied only on the beam, reflecting the strong column-weak beam concept and underscoring the critical role of column confinement in joint strengthening under the monotonic loading. Moreover, incorporating these steel plates helps mitigate the propagation of shear and flexural cracks within the joint, effectively shifting the crack formation away from the beam-column joint interface. These findings highlight the potential of externally applied steel plates as a highly effective strengthening measure for beam-column joints in reinforced concrete structures.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Behaviour of reinforced concrete beam-column joint externally reinforced with steel plates

  • 期刊论文

  • 发表日期：

    2025年10月8日

查看全文
  • Himanshu Bansal,
  • Vinay Kumar,
  • Pardeep Kumar

摘要

Beam-column joints play a critical role in the structural integrity of reinforced concrete frame constructions, as they facilitate the transfer of moments and forces between beams and columns in different bays and storeys. Beam-column joints significantly impact the overall behaviour of the structure under gravity and lateral loads. While several strengthening approaches for beam-column joints have been investigated in previous studies, limited attention has been given to their monotonic load performance when joints are externally reinforced with steel plates, especially considering variations in plate placement and thickness within the joint region. In this study, a total of 15 beam-column joints with different topologies, with and without transverse reinforcement, are modelled using ANSYS APDL 2024 R1 (ANSYS Parametric Design Language) software to analyse their behaviour under increasing load until failure. Additionally, beam-column joints with steel plates 50 mm and 25 mm thick applied externally to the column, beam, and entire joint are also analysed to assess their strengthening effect and corresponding ductility index. The test results reveal that the application of externally applied 50 mm and 25 mm thick steel plates on the joint without transverse reinforcement leads to an increase in load-carrying capacity by 26.5% and 20.5%, respectively. In the case of joints with transverse reinforcement, the steel plates enhance the load-carrying capacity by 6.1% and 8.18%, respectively. Additionally, it was observed that steel plates applied only on the column region performed better that those applied only on the beam, reflecting the strong column-weak beam concept and underscoring the critical role of column confinement in joint strengthening under the monotonic loading. Moreover, incorporating these steel plates helps mitigate the propagation of shear and flexural cracks within the joint, effectively shifting the crack formation away from the beam-column joint interface. These findings highlight the potential of externally applied steel plates as a highly effective strengthening measure for beam-column joints in reinforced concrete structures.