CONSTRUCTION OF CYLINDRICAL STRUCTURE AND STEEL SEGMENT THEREFOR

• Main Authors: OKIMOTO MASAYUKI, YOSHIZUMI TOSHIHIKO
• Format: Patent
• Language: English
• Published: 25.04.1990
• Subjects: BUILDING; BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; EARTH DRILLING; EMBANKMENTS; EXCAVATIONS; FENCING; FIXED CONSTRUCTIONS; FOUNDATIONS; GALLERIES; HYDRAULIC ENGINEERING; LARGE UNDERGROUND CHAMBERS; MASTS; MINING; SHAFTS; SOIL SHIFTING; SWIMMING OR SPLASH BATHS OR POOLS; TENTS OR CANOPIES, IN GENERAL; TUNNELS; UNDERGROUND OR UNDERWATER STRUCTURES

PURPOSE:To make a construction with high reliability and advantageous economic efficiency by making friction coupling of steel segments consisting of a skin plate and grillage ribs through splices and constructing a circular segment wall to the peripheral surface of a cylindrical excavation hole to fill concrete. CONSTITUTION:Grillage ribs 5 constituted of horizontal ribs 3 to be curved so as to adhere to the circumferential surface 2a of a skin plate 2 to be curved on the basis of a set curvature and vertical ribs 4 having sides adhered to the circumferential surface 2a as well are welded. Friction coupling joints 9 provided with bolt connecting through-holes 6 are to the ends of the horizontal ribs 3 and vertical ribs 4, and a gap blocking skirt metal fittings 10 is welded to the outside 2b of the skin plate 2. In addition, adjacent steel segments 1 are such that the friction coupling joints 9a and 9b of the vertical ribs 4 to be hung on the grillage ribs 5 and 5 coming into contact with each other are rubbed and coupled by friction coupling high strength bolts 13a and 13b through slices 12a and 12b. According to the constitution, they are excellent in strength, so that the breakdown caused by big bending or shearing force can be prevented.