A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stress Redistribution in Prestressed Concrete Bridges Built with Ultra-Thin Precast Girders
The balanced lift method for bridge construction proposes to build the bridge girders in a vertical position and to rotate them into the final horizontal position with the aid of compression struts. During the construction process, when the bridge girders are rotated from the initial vertical position into the final horizontal position, it is of utmost importance for an economic application of the balanced lift method that the structural members are as light as possible. In a test beam (length = 30.02 m, height = 1.44 m, width = 0.7 m) the actual filling process with concrete was carried out. Subsequently, the longitudinal strains on the outside of the beam were monitored over a period of four years in order to investigate the creep behaviour. Due to creep, the initially high stresses in the prefabricated outer shell are gradually reduced and the in-fill concrete is subjected to axial compressive stresses.
Stress Redistribution in Prestressed Concrete Bridges Built with Ultra-Thin Precast Girders
The balanced lift method for bridge construction proposes to build the bridge girders in a vertical position and to rotate them into the final horizontal position with the aid of compression struts. During the construction process, when the bridge girders are rotated from the initial vertical position into the final horizontal position, it is of utmost importance for an economic application of the balanced lift method that the structural members are as light as possible. In a test beam (length = 30.02 m, height = 1.44 m, width = 0.7 m) the actual filling process with concrete was carried out. Subsequently, the longitudinal strains on the outside of the beam were monitored over a period of four years in order to investigate the creep behaviour. Due to creep, the initially high stresses in the prefabricated outer shell are gradually reduced and the in-fill concrete is subjected to axial compressive stresses.
Stress Redistribution in Prestressed Concrete Bridges Built with Ultra-Thin Precast Girders
Suza, Dominik (author) / Kollegger, Johann (author)
10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures ; 2015 ; Vienna, Austria
CONCREEP 10 ; 640-648
2015-09-18
Conference paper
Electronic Resource
English
Precast-prestressed concrete bridges. Pilot tests of continuous girders
| Engineering Index Backfile | 1960
Design of continuous highway bridges with precast, prestressed concrete girders
| Engineering Index Backfile | 1969
Launching precast prestressed concrete girders
| Engineering Index Backfile | 1960
Precast-Prestressed Concrete Bridges : 1. Pilot Tests of Continuous Girders
| UB Braunschweig | 1960
Precast-Prestressed Concrete Bridges : 3. Further Tests of Continuous Girders
| UB Braunschweig | 1960