| 摘要 |
PURPOSE:To facilitate jointing work with high accuracy and strength by matching the faces through jointing groove and key of respective float then temporarily securing PC steel member thereafter placing concrete on the jointing face and stretching PC steel member. CONSTITUTION:A jointing groove 5 and key 6 are formed at the lower portion of respective joint face of concrete float then while regulating the buoyancy, said groove and key 5, 6 are fitted and pressure contacted to match the faces. Then PC steel member 13 is passed through the joint face of respective float and resin is injected to secure temporarily. Thereafter, the iron rods projecting from the joint face are jointed to place concrete 18 and PC steel member 13 is stretched and jointed. Consequently, positioning of both floats can be performed easily with high accuracy while the strength is increased through stretching of PC steel member after placing of concrete.
|
