SEGMENTAL CONSTRUCTION (SUPPORTING STRUCTURES PREFABRICATED IN SECTIONS WITH GLUED PRESTRESSED JOINTS)

SEGMENTBAUWEISE - IN ABSCHNITTEN VORGEFERTIGTE TRAGWERKE MIT GEKLEBTEN, VORGESPANNTEN STOESSEN

IN AUSTRIA SEGMENTAL CONSTRUCTION HAS ONLY BEEN USED FOR HIGH-RISE BUILDINGS. IN ORDER TO OBTAIN PRACTICAL EXPERIENCE IN SEGMENTAL CONSTRUCTION FOR LARGE BRIDGES AND NEW INFORMATION IN RELATION TO AUSTRIAN REQUIREMENTS AND SPECIFICATIONS, IT IS NECESSARY TO ERECT A SMALLER BRIDGE AS A DEMONSTRATION PROJECT. THE BRIDGE CONSISTS OF A FREELY SUPPORTED BEAM (44 M) HAVING A HOLLOW BOX CROSS SECTION, MASSIVE ABUTMENTS AND A BORED PILE FOUNDATION. SO THAT THE BEHAVIOUR OF THE STRUCTURE AND IN PARTICULAR THE DEFORMATIONS AFTER CONSTRUCTION CAN BE MONITORED, MEASUREMENTS OF STRAIN ARE BEING TAKEN ON THE INSIDE OF THE STRUCTURE IN THE REGION OF THE JOINTS. PRELIMINARY STUDIES ARE TO BE CARRIED OUT TO SELECT THE GLUE. TESTS OF THE MODULUS OF ELASTICITY, COMPRESSIVE, TENSILE, BENDING TENSILE, ADHESION AND SHEAR STRENGTH, TEMPERATURE BEHAVIOUR AND OTHER MATERIAL VALUES OF THE GLUE ARE ANTICIPATED. ASSOCIATED MODEL TESTS SHOULD INDICATE THE OPTIMUM CONSTRUCTION OF THE CONTACT JOINTS.