Channel bolts installed in anchor channels are a common fastening system for attaching elevator guide rails for cars and counterweights to the reinforced concrete structure. Due to the constant movement of elevators, these connections require fatigue design. While the fatigue qualification of anchor channels loaded in tension has been well established for decades, the fatigue qualification of anchor channels loaded in shear has only recently been possible. The first-ever anchor channel products were tested under dynamic loads in all directions to investigate their fatigue performance. A gap filler kit was used to eliminate the gap between the fixture and the shaft of the channel bolt and between the head of the channel bolt and the anchor channel required for fatigue actions. Following the introduction of anchor channels, some background information is provided, particularly about the fatigue design and qualification. A series of tests carried out under dynamic tension, transverse shear, and longitudinal shear loading are presented. The tests demonstrated the suitability of the system for fatigue design, providing the first anchor channels with tensile and shear fatigue qualification, allowing the design for three-dimensional fatigue actions.

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First Anchor Channel Qualified for Three-Dimensional Fatigue Actions in Tension and Shear

  • Christoph Mahrenholtz,
  • Thilo Fröhlich

摘要

Channel bolts installed in anchor channels are a common fastening system for attaching elevator guide rails for cars and counterweights to the reinforced concrete structure. Due to the constant movement of elevators, these connections require fatigue design. While the fatigue qualification of anchor channels loaded in tension has been well established for decades, the fatigue qualification of anchor channels loaded in shear has only recently been possible. The first-ever anchor channel products were tested under dynamic loads in all directions to investigate their fatigue performance. A gap filler kit was used to eliminate the gap between the fixture and the shaft of the channel bolt and between the head of the channel bolt and the anchor channel required for fatigue actions. Following the introduction of anchor channels, some background information is provided, particularly about the fatigue design and qualification. A series of tests carried out under dynamic tension, transverse shear, and longitudinal shear loading are presented. The tests demonstrated the suitability of the system for fatigue design, providing the first anchor channels with tensile and shear fatigue qualification, allowing the design for three-dimensional fatigue actions.