1 0 0 0 OA 皿型高力ボルトを用いた摩擦接合継手のボルト形状及び継手特性に関する解析的検討
- 著者
- 田畑 晶子 金治 英貞 黒野 佳秀 山口 隆司
- 出版者
- 一般社団法人 日本鋼構造協会
- 雑誌
- 鋼構造論文集 (ISSN:18809928)
- 巻号頁・発行日
- vol.20, no.79, pp.79_19-79_28, 2013-09-27 (Released:2014-12-20)
- 参考文献数
- 10
The authors focused on the high strength bolted friction grip joints with countersunk head bolts which can finish the surface of the connection plate flat smoothly and prevent from functional depression due to corrosion. In this study, we carried out FE analysis varying the angle of countersunk head in order to evaluate the contact pressure of double shear connected friction joints with countersunk heads. Also, we have investigated the influence on load transferring mechanism by using countersunk head bolt for frictional joints. It has concluded that the most desirable angle of the countersunk head is 90 degrees. CD series's slip strength is about only 4% lower than that with normal head bolts.
1 0 0 0 OA 火災を想定した加熱冷却履歴を受けた橋梁用高降伏点鋼の機械的性質
- 著者
- 廣畑 幹人 寺口 大輝 北根 安雄
- 出版者
- 一般社団法人 日本鋼構造協会
- 雑誌
- 鋼構造論文集 (ISSN:18809928)
- 巻号頁・発行日
- vol.26, no.101, pp.101_79-101_86, 2019-03-25 (Released:2020-03-12)
- 参考文献数
- 13
For investigating effect of heating and cooling process simulating fire on mechanical properties of Steels for Bridge High Performance Structure (SBHS), a series of experiment was carried out. The heating of 600℃ did not change the mechanical properties of SBHS from those without heating and cooling. The heating of 900℃ and air cooling decreased the mechanical properties of SBHS due to softening. The heating of 900℃ and water cooling increased the ultimate strength due to hardening; however, it decreased the yield stress and elongation of SBHS to the level below that required by JIS.