ARCH-TYPE STRUCTURE, METHOD AND APPARATUS FOR ITS ASSEMBLY AND ERECTION Russian patent published in 1995 - IPC

FIELD: construction. SUBSTANCE: arch-type structure has: prefabricated blocks, provided with different height beadings of side longitudinal thin-walled members, that have cross-section channel form; transverse thin-walled members of angle bar shape. In the case, channel seats are facing outside the block and are overlapped by sheets, that are connected with side thin-walled and angle bar members by electric rivets. Blocks are connected to each other by in longitudinal direction by bolts. Assembly of arch-type members is exercised in following way: made of blocks arches are installed in projected position with clearance between blocks beadings, in which they insert assembling mechanism and move it along the clearance, using cable-block system, based on the ground. Assembling apparatus is mounted on frame, that forms mechanism with forming heads, having upper and lower shape rolls, mounted on vertical axis of rotation. In the case, pairs of shape rolls are not connected to each other. Beside shape rolls, there are supporting rolls, axes of rotation of which are perpendicular to axes of rotation of shape rolls, and they have another common axis. Upper and lower pairs of guiding rollers are mounted in front of first forming head. EFFECT: arch-type structure, method and apparatus are used in construction. 7 cl, 17 dwg