THE CHALLENGES OF REHABILITATING THE HERCILIO LUZ SUSPENSION BRIDGE
Keywords:
BRIDGE REHABILITATION, STRUCTURAL IMPAIRMENT EVALUATION, LOAD TRANSFER, SYNCHRONIZED JACKING.Abstract
THE HERCÍLIO LUZ SUSPENSION BRIDGE, BUILT IN 1926, HAS BEEN OUT OF SERVICE SINCE 1991 DUE TO HIGH CORROSION LEVELS AND STRUCTURAL ELEMENT IMPAIRMENT. A COMPLETE REHABILITATION PROJECT WAS DEVELOPED. IT INCLUDES THE REPLACEMENT OF THE IMPAIRED ITEMS AND FOUNDATION STRENGTHENING. AN AUXILIARY STRUCTURE IS EMPLOYED TO SUPPORT THE CENTRAL SPAM DURING THE REHABILITATION PROCESS. A CAREFULLY STUDIED LOAD TRANSFER PROCESS, WHERE THE CENTRAL SPAN LOADING IS TRANSFERRED FROM THE EYE-BAR TOWARDS THE AUXILIARY STRUCTURE, IS PERFORMED. FOR THIS PURPOSE, A SYNCHRONIZED JACKING SEQUENCE IS EMPLOYED. THE JACKING SEQUENCE WAS PREDEFINED BY MEANS OF NUMERICAL MODEL ANALYSIS
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2017-03-04
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