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<p>A Steel-Concrete Composite Shear Wall is found to be a viable alternative to the conventionally used Reinforced Concrete Shear Wall to resist the lateral forces acting on the structure. This study utilizes a composite shear wall with cold-formed steel sheets on either side of a concrete core and is combined with shear connectors to ensure proper composite action. While hot-rolled steel-concrete composite shear walls are currently employed in certain real-world applications with on-site monolithic casting, precast steel-concrete composite shear walls are emerging as a contemporary solution. However, in recent times, the attention has shifted from hot-rolled steel to cold-formed steel owing to multiple advantages. As a result, precast cold-formed steel-concrete composite shear wall systems are expected to see widespread use in the future due to their advantages, such as faster construction, superior quality, and cost efficiency. However, the primary concern while dealing with precast composite shear walls is the appropriate connection between two walls to ensure proper structural integrity and to effectively transfer the forces to the shear walls beneath. Studies on connections between precast composite shear walls are very scarce since conventional dry and wet connections become unfeasible with precast composite walls. Therefore, this study aims to develop an innovative dowel wet connection to provide the vertical connection between cold-formed steel-concrete composite shear walls. Furthermore, the behaviour of this connection is compared experimentally to that of a monolithically cast cold-formed composite shear wall, and the governing parameters such as the ultimate capacity, stiffness, ductility, and failure patterns are compared. From the experimental results, it is evident that the proposed innovative dowel wet connection can be utilized as a wall-to-wall connection, rather than a wall-to-foundation connection. The precast composite wall with the innovative dowel connection was observed to carry 68% of the lateral load carried by that of the monolithically cast specimen.</p>

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Innovative Dowel Connection System for Double Skinned Composite Precast Shear Walls Under in-Plane Lateral Loads

  • 期刊论文

  • 发表日期：

    2025年6月16日

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  • Uma Chandru,
  • Akhil G. Thomas,
  • R. Senthilkumar

摘要

A Steel-Concrete Composite Shear Wall is found to be a viable alternative to the conventionally used Reinforced Concrete Shear Wall to resist the lateral forces acting on the structure. This study utilizes a composite shear wall with cold-formed steel sheets on either side of a concrete core and is combined with shear connectors to ensure proper composite action. While hot-rolled steel-concrete composite shear walls are currently employed in certain real-world applications with on-site monolithic casting, precast steel-concrete composite shear walls are emerging as a contemporary solution. However, in recent times, the attention has shifted from hot-rolled steel to cold-formed steel owing to multiple advantages. As a result, precast cold-formed steel-concrete composite shear wall systems are expected to see widespread use in the future due to their advantages, such as faster construction, superior quality, and cost efficiency. However, the primary concern while dealing with precast composite shear walls is the appropriate connection between two walls to ensure proper structural integrity and to effectively transfer the forces to the shear walls beneath. Studies on connections between precast composite shear walls are very scarce since conventional dry and wet connections become unfeasible with precast composite walls. Therefore, this study aims to develop an innovative dowel wet connection to provide the vertical connection between cold-formed steel-concrete composite shear walls. Furthermore, the behaviour of this connection is compared experimentally to that of a monolithically cast cold-formed composite shear wall, and the governing parameters such as the ultimate capacity, stiffness, ductility, and failure patterns are compared. From the experimental results, it is evident that the proposed innovative dowel wet connection can be utilized as a wall-to-wall connection, rather than a wall-to-foundation connection. The precast composite wall with the innovative dowel connection was observed to carry 68% of the lateral load carried by that of the monolithically cast specimen.