FIXING STRUCTURE FOR MEMBRANE OF LOW TEMPERATURE TANK

PURPOSE:To enable a plurality of anchors to be placed on a flat plane of a membrane to allow rotation distortion of the flat plane by the respective anchors by providing an anti-crush cylinder for surrounding a locking member which can be relatively displaced to be inserted between a concrete body and the membrane. CONSTITUTION:On an inner face of a concrete body 01, a membrane 03 with respective welding holes 05 drilled is supported by an anchor 07 across a cold insulator 02 on a rectangular flat plane surrounded by a plurality of pleats 04 protruding in a grid with appropriate vertical and lateral intervals. In this case, a locking member 3 which can be relatively displaced is placed wherein its base end is buried into the concrete body 01 and the tip is locked no a fixing plate 1 fillet-welded concentrically to an inside of a welding hole 1a. An anti-crush cylinder 6 for surrounding the locking member 3 to be inserted between the concrete body 01 and the membrane 03 is provided. Thus a plurality of anchors 07 are provided on the flat plane of the membrane 03, while the respective anchors 07 allow rotation distortion of the flat plane, thereby reducing a processing amount of the pleats.