Method for supporting a transportation surface

Details Method for supporting a transportation surface Method for supporting a transportation surface

1993-03-24

1995-03-28

Britts, Ramon S.

Bridges

Bridge construction method

14 18, 14 73, 14 75, 521677, 521674, E01D 1902, E02D 2734

Patent

active

054004543

ABSTRACT:
A method of supporting a transportation surface, such as a vehicular bridge, a railroad trestle or an elevated walkway, that is resistant to unexpected, infrequent shocks such as might be encountered during an earthquake or similar disaster. The method includes arranging laterally spaced apart fixed bearing members on a surface adjacent a path for a transportation surface and supporting elongated elastic members on the bearing members at a distance spaced inwardly from the ends of the elastic members. The transportation surface may be placed in association with the elastic members. Beginning from an equilibrium state, each elastic member is capable of bending in proportion to the magnitude of an additional load applied intermediate the ends of the elastic member, with the ends of the elastic member sliding against the bearing members a distance also proportional to the magnitude of the additional load.

REFERENCES:
patent: 3500625 (1970-03-01), Gokyu
patent: 3659633 (1972-05-01), Durkee et al.
patent: 3977140 (1976-08-01), Matsudaira et al.
patent: 4332118 (1982-06-01), Westberg
patent: 4946128 (1990-08-01), Cunningham
patent: 5205528 (1993-04-01), Cunningham

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