To provide a tank to be laid on a vehicle and a manufacturing method for the tank, which solve the problem that a conventional method of separately manufacturing mirror plates and straight trunks and then joining them together results in a stress concentration near joined parts, allowing repeating stress or compressed air introduced into the tank to break the joined parts, and that liquid wave applies non-uniform stress to breakwater plates in the tank to crack and damage the breakwater plates.
A FRP corrosion-resisting layer is formed integrally on the surface of a form work, which is of an almost cylinder having one end of an outward convex mirror shape and the other end of an opening. Then a FRP reinforcing layer and a FRP finishing layer are sequentially laminated on the FRP corrosion-resisting layer, and the all the layers are hardened integrally to form an almost cylinder made of FRP, the same one of which is also made. Respective open ends of two almost cylinders are joined with FRP to form a tank body. There is also provided subframes, which have FRP reinforcing plates that are joined to the tank body with FRP and are laid on a chassis frame. In addition, FRP short pipes are fitted into manholes on the FRP breakwater plates in the tank to be joined to the breakwater plates for reinforcement.
OBA TAKESHI
HIDAKA RITSU
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Toru Miyamae