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Anchor Bolt

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Suchuan Tian – One of the best experts on this subject based on the ideXlab platform.

  • load transfer mechanism and critical length of Anchorage zone for Anchor Bolt
    PLOS ONE, 2020
    Co-Authors: Xingliang Xu, Suchuan Tian

    Abstract:

    The length of Anchorage zone of an Anchor Bolt affects the distribution of axial force and shear stress therein. Based on a shear–displacement model, the load distribution of Anchor Bolts in the elastic deformation stage was analysed. Moreover, the mechanical response of threaded steel Anchor Bolts with different Anchorage lengths was explored through pull-out test and numerical simulation. The results showed that axial force and shear stress were negatively exponentially distributed within the Anchorage zone of Anchor Bolts in which there were the maximum axial force and shear stress at the beginning of the Anchorage zone. In the elastic deformation stage of the Anchorage, the longer the Anchorage length, the more uniformly the shear stress was distributed within the Anchorage zone and the larger the ultimate shear stress; however, there was a critical Anchorage length, which, when exceeded, the ultimate shear stress remained unchanged. The calculation formula for the critical Anchorage length was deduced and a reasonable Anchorage length determined. The research result provides an important theoretical basis for rapid design of support parameters for Anchor Bolts.

William Potter – One of the best experts on this subject based on the ideXlab platform.

  • Anchor Bolt steel strength in annular stand off base plate connections
    Transportation Research Record, 2014
    Co-Authors: Kenton E Mcbride, Ronald A Cook, David O Prevatt, William Potter

    Abstract:

    Anchor Bolts in annular stand-off base plates connecting cantilever sign and signal structures to concrete foundations may experience high shear from base plate torsion and direct shear forces. A three-phase experimental study evaluated the steel shear strength of Anchor Bolts in grouted and ungrouted annular stand-off base plate connections to concrete. Phase 1 included flush-mounted and ungrouted stand-off base plates with 5/8- and 1-in.-diameter Bolts loaded in direct shear. Phase 2 employed a novel torsion test approach on 10 circular groups of six 5/8-in.-diameter Bolts installed in flush-mounted, ungrouted stand-off, and grouted stand-off base plates, along with three ungrouted groups of three 1-in.-diameter Bolts. Phase 3 comprised one ungrouted and three grouted full-scale annular base plate tests of six 1.25-in.-diameter Bolts under predominantly torsion loading. Results from this study suggest that AASHTO’s provisions allowing Bolt bending stresses to be ignored for Anchor Bolts with an exposed …

Xingliang Xu – One of the best experts on this subject based on the ideXlab platform.

  • load transfer mechanism and critical length of Anchorage zone for Anchor Bolt
    PLOS ONE, 2020
    Co-Authors: Xingliang Xu, Suchuan Tian

    Abstract:

    The length of Anchorage zone of an Anchor Bolt affects the distribution of axial force and shear stress therein. Based on a shear–displacement model, the load distribution of Anchor Bolts in the elastic deformation stage was analysed. Moreover, the mechanical response of threaded steel Anchor Bolts with different Anchorage lengths was explored through pull-out test and numerical simulation. The results showed that axial force and shear stress were negatively exponentially distributed within the Anchorage zone of Anchor Bolts in which there were the maximum axial force and shear stress at the beginning of the Anchorage zone. In the elastic deformation stage of the Anchorage, the longer the Anchorage length, the more uniformly the shear stress was distributed within the Anchorage zone and the larger the ultimate shear stress; however, there was a critical Anchorage length, which, when exceeded, the ultimate shear stress remained unchanged. The calculation formula for the critical Anchorage length was deduced and a reasonable Anchorage length determined. The research result provides an important theoretical basis for rapid design of support parameters for Anchor Bolts.