Expansion joint for roadway sections

Details Expansion joint for roadway sections Expansion joint for roadway sections

1977-06-01

1978-10-17

Byers, Nile C.

Bridges

Truss

Arrangement

404 69, 52396, E01D 1906

Patent

active

041200667

ABSTRACT:
An expansion joint for mounting in the gap left between roadway sections, e.g. sections of a roadway bridge structure, to accommodate thermal expansion of the sections, is provided with at least one intermediate beam member extending in the gap across the width of the roadway and sealing strips of elastomeric material fitted between the roadway section edge structures and the intermediate beam. The joint has a plurality of units spaced apart across the width of the roadway, each unit comprising a lazy tong link arrangement pivotally mounted to the edge structures of the two roadway sections and to the intermediate beam members and extending across the gap, so as to ensure that any expansion or contraction of the gap between the roadway sections is equally distributed among the various parts of the gap on each side of and between the intermediate beam or beams. A spanning member is provided in each joint unit, which extends across the gap below the intermediate beam members and is slidable with respect to them and with respect to the roadway sections. The lazy tongs link arrangement and the spanning member are both pivotable to a small degree with respect to each of the roadway sections, so as to accommodate relative height changes between them without damage to the structural parts.

REFERENCES:
patent: 3482492 (1969-12-01), Bowman
patent: 3603055 (1971-09-01), Dale
patent: 3788758 (1974-01-01), Scheffel
patent: 3797952 (1974-03-01), Pommerening
patent: 3830583 (1974-08-01), Becht
patent: 3880540 (1975-04-01), Rizza
patent: 3904302 (1975-09-01), Bertschmann
patent: 3904304 (1975-09-01), Honegger
patent: 3907443 (1975-09-01), McLean
patent: 4030156 (1977-06-01), Raymond

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