Lateral resistance of anchor-bolt joints between timber sills and foundations II. Effective lateral resistance of multiple anchor-bolt joints |
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| Authors: | Takuro Hirai Kayoko Namura Kuniyoshi Yanaga Akio Koizumi Tetsuji Tsujino |
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| Institution: | (1) Graduate School of Agriculture, Hokkaido University, Kita 9 Nishi 9, Kitaku, Sapporo 060-8589, Japan;(2) Tostem Co. Ltd. C]Nagareyama, 270-0163, Japan;(3) Chugoku Lumber Co. Ltd., Kure 737-0134, Japan;(4) Faculty of Education, Iwate University, Morioka 020-0066, Japan |
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| Abstract: | Monte Carlo simulations were conducted to estimate the effective lateral resistance of multiple anchor-bolt joints with ordinary
specifications of Japanese post and beam constructions. Basic lateral load-slip curves of single anchor-bolt joints required
in the simulations were determined from the test results of our earlier report. The effective lateral resistance of multiple
anchor-bolt joints was estimated for some combinations of loading direction, length/diameter ratio of anchor bolts, lead-hole
clearance, and number of anchor bolts. The principal results of the simulations are: (1) anchor-bolt joints loaded perpendicular
to lateral forces are not recommended to be counted as supplementary resisting elements because their supplementary shares
are far less than those expected from their allowable lateral resistance; (2) multiple anchor-bolt joints with small length/diameter
ratios have comparatively lower effective resistance ratios than multiple anchor-bolt joints with large length/diameter ratios;
(3) the effective resistance of multiple anchor-bolt joints is affected not only by lead-hole clearance or number of bolts
but also variance of load-slip characteristics of single anchor-bolt joints.
Part of this work was presented at WCTE2004, Lahti, June 2004 |
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| Keywords: | Multiple anchor-bolt joints Lead-hole clearance Effective lateral resistance Monte Carlo simulation |
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