大吨位沉船整体打捞中打捞框架吊装下放技术
魏良孟, 朱小东, 易欠, 崔进, 周东荣

Lifting and Lowering of Salvage Frame for Integral Salvage of Large Tonnage Wreck
WEI Liangmeng, ZHU Xiaodong, YI Qian, CUI Jin, ZHOU Dongrong
表1 钢材的设计用强度指标
Tab.1 Strength index for steel design
钢材 牌号 钢材厚度或
直径/mm		 强度设计值/MPa
抗拉、抗
压、抗弯		 抗剪
碳素结构钢 Q235 ≤16 215 125
>16, ≤40 205 120
>40, ≤100 200 115
低合金高
强度结构钢		 Q345 ≤16 305 175
>16, ≤40 295 170
>40, ≤63 290 165