MOBILE SUPPORTING PART OF SLEEVE-TYPE BRIDGE Russian patent published in 1998 - IPC

FIELD: bridge construction. SUBSTANCE: mobile supporting part of sleeve-type bridge includes yoke in the form of sleeve and insert of restoring material placed inside its space, Insert has cover carrying flat members made from antifriction material in the form of plates and/or discs with recesses located on side of sliding plate put on flat members. Recesses are filled with lubricant to diminish friction additionally with relative displacement of support and span. Wall of sleeve is formed by at least couple of interconnected metal rings, sealing rings are placed over perimeter of insert and flat members are put into recesses made in cover. Bottom of sleeve is manufactured from two metal sheets as minimum positioned under rings of wall. At least lower one has holes for anchoring outside limits of sleeve. Lower part of cover is situated at level of upper metal ring of wall. Such structural design of support makes it possible to simplify design of structure, to improve its maintainability and to prolong its service life. EFFECT: simplified design and prolonged service life of support. 2 dwg