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

FIELD: bridge construction, installation of spans of bridges. SUBSTANCE: supporting part of sleeve-type bridge includes casing in the form of sleeve, rubber insert with sealing rings arranged over its perimeter placed in its space and cover with conical side surface put on rubber insert with clearance relative to sealing rings. Cover has T-shaped cross-section. Peripheral parts of upper plate embrace upper part of sleeve to form weather grooves in the form of circular protrusions concentrically arranged on lower surface of cover. Height of protrusion having smallest diameter exceeds height of circular protrusion of biggest diameter by value of clearance between them. Wall of sleeve in this case may be formed by one or pair of metal rings as minimum, connected to each other and to bottom of sleeve. Sealing rings are positioned concentrically with respect to metal rings. Bottom of sleeve id made from two metal sheets at least located under rings of wall. Lower one has holes for anchoring outside limits of sleeve. Lower part of T- shaped cover is situated at level of upper metal ring of sleeve. EFFECT: enhanced technological effectiveness of structure, reduced dimensions with provision for decrease of loads transmitted to supporting units of spans. 1 cl, 2 dwg