Relationship between clamp force and pull-out strength in lag screw timber joints

被引：9

作者：

Matsubara, Doppo ^{[1
]}

Wakashima, Yoshiaki ^{[2
]}

Fujisawa, Yasushi ^{[2
]}

Shimizu, Hidemaru ^{[3
]}

Kitamori, Akihisa ^{[4
]}

Ishikawa, Koichiro ^{[5
]}

机构：

[1] Tokyo Metropolitan Ind Technol Res Inst, Koto Ku, 2-4-10 Aomi, Tokyo 1350064, Japan

[2] Toyama Prefectural Agr Forestry & Fisheries Res C, 4940 Imizu, Toyama 9390311, Japan

[3] Sugiyama Jogakuen Univ, Chikusa Ku, Nagoya, Aichi 4648662, Japan

[4] Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Kyoto 6110011, Japan

[5] Univ Fukui, Fukui, Fukui 9108507, Japan

来源：

JOURNAL OF WOOD SCIENCE | 2017年 / 63卷 / 06期

关键词：

Lag screw joints; Clamp force; Pull-out strength; Tightening test; CONNECTIONS; GRAIN; BEAM;

D O I：

10.1007/s10086-017-1660-1

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

This study empirically examines the relationship between clamp force and pull-out strength in lag screw joints of timber members, using data obtained in tightening tests and pull-out tests. Maximum clamp force per unit screw length as determined from the tightening tests was lower than the lower bound for the 95% tolerance range for pull-out strength per unit screw length as determined from the pull-out tests. Moreover, X-ray CT (computed tomography) observations of anchor members from both tests revealed that failure behavior clearly differed between the tightening test and the pull-out test: tightening caused damage to the wooden, female thread in addition to major splitting damage in the wood perpendicular to the grain near the tip of the lag screw.

引用

页码：625 / 634

页数：10

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