Method of span construction

Details Method of span construction Method of span construction

1992-05-14

1993-11-16

Britts, Ramon S.

Bridges

Bridge construction method

14 24, 52 215, E01D 2102, E04G 1104

Patent

active

052611370

ABSTRACT:
A method of erecting a span between two points is disclosed which comprises the steps of securing an elongated, flexible sheath to the two points; inflating the tubular sheath with a gaseous fluid to form an arched tubular span; maintaining inflation of the arched tubular span to effect a constant pressure differential across the sheath; further increasing the upward force gradient on the sheath by support apparatus; utilizing the arched tubular span as support for a plurality of hollow aluminum troughs; anchoring the troughs at the two end points to erect a permanent load-bearing span between the two end points; and, deflating and removing the tubular sheath.

REFERENCES:
patent: 4170093 (1979-10-01), Cappellini et al.
patent: 4257199 (1981-03-01), Kuboyama
patent: 4454620 (1984-06-01), Barkdull, Jr.
patent: 4712335 (1987-12-01), Barkdull, Jr.

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