A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Road resurfacing throughout the State of Alabama has resulted in many highway bridges having insufficient underneath vertical clearance. A bridge lifting/monitoring system was developed in this investigation as one solution to this problem. The system consists of (1) a modular set of jack support and lift hardware, (2) a hydraulic system, and (3) a displacement monitoring system. The system is designed to uniformly raise continuous 4-span/4-girder reinforced concrete bridges, and is relatively lightweight, easy to set up and operate, reusable and designed to fit most bridge slopes, skew angles, girder spacings and abutment/bent configurations. Testing of the developed system was performed on an Experimental Test Bridge. Evaluations of detrimental differential support displacements were made analytically and experimentally for the Test Bridge. Various combinations of submember modelings of the bridge were tried, and the analytical/numerical m vs delta results tested for correlation with the experimental curves. Based on these comparisons, prismatic member modelings of a bridge are recommended. Detailed procedures for evaluating the failure differential displacements are presented.
Road resurfacing throughout the State of Alabama has resulted in many highway bridges having insufficient underneath vertical clearance. A bridge lifting/monitoring system was developed in this investigation as one solution to this problem. The system consists of (1) a modular set of jack support and lift hardware, (2) a hydraulic system, and (3) a displacement monitoring system. The system is designed to uniformly raise continuous 4-span/4-girder reinforced concrete bridges, and is relatively lightweight, easy to set up and operate, reusable and designed to fit most bridge slopes, skew angles, girder spacings and abutment/bent configurations. Testing of the developed system was performed on an Experimental Test Bridge. Evaluations of detrimental differential support displacements were made analytically and experimentally for the Test Bridge. Various combinations of submember modelings of the bridge were tried, and the analytical/numerical m vs delta results tested for correlation with the experimental curves. Based on these comparisons, prismatic member modelings of a bridge are recommended. Detailed procedures for evaluating the failure differential displacements are presented.
Bridge Lifting System
G. E. Ramey (author)
1980
112 pages
Report
No indication
English
BRIDGE LIFTING APPARATUS AND BRIDGE LIFTING METHOD THEREFOR
| European Patent Office | 2018
| European Patent Office | 2017