Journal of Wood Science

, Volume 52, Issue 4, pp 295–301 | Cite as

Lateral resistance of anchor-bolt joints between timber sills and foundations III: numerical simulations of the effect of sill thickness on the effective lateral resistance of multiple anchor-bolt joints

  • Takuro Hirai
  • Kayoko Namura
  • Takeo Kimura
  • Tetsuji Tsujino
  • Akio Koizumi
Original Articles

Abstract

Effective lateral resistance of multiple anchorbolt joints was estimated by considering sill thickness or length/diameter ratios of anchor bolts. Load-slip relationships of single anchor bolt joints were analyzed by the stepwise linear approximation based on the generalized theory of a beam on an elastic foundation and the criterion of “fracture bearing displacement” for several sill thicknesses or length/diameter ratios of anchor bolts. Monte Carlo simulations of the effective lateral resistance of multiple anchor-bolt joints were conducted using the analyzed load-slip curves of single anchor-bolt joints. Effective resistance ratios of multiple anchor-bolt joints were simulated for some combinations of length/diameter ratios of anchor bolts, lead-hole clearances, and number of anchor bolts. The simulated results are: (1) the influence of lead-hole clearance becomes more apparent as length/diameter ratios of single anchor-bolt joints decrease; (2) there is no obvious effect of number of anchor-bolts over the range of 5 to 15; (3) average effective resistance ratios can be adopted for allowable stress design; and (4) reduction of effective resistance ratios should be considered particularly for small length/diameter ratios of anchor-bolt joints.

Key words

Multiple anchor-bolt joints Effective lateral resistance Stepwise linear analysis Beam on foundation Monte Carlo simulation 

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Copyright information

© The Japan Wood Research Society 2006

Authors and Affiliations

  • Takuro Hirai
    • 1
  • Kayoko Namura
    • 2
  • Takeo Kimura
    • 3
  • Tetsuji Tsujino
    • 4
  • Akio Koizumi
    • 1
  1. 1.Graduate School of AgricultureHokkaido UniversitySapporoJapan
  2. 2.Tostem Co. Ltd.NagareyamaJapan
  3. 3.Minamifuji Sangyo Co. Ltd.YokohamaJapan
  4. 4.Faculty of EducationIwate UniversityMoriokaJapan

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