STUDIES OF CONNECTIONS OF ROUNDED AND RECTANGULAR HOLLOW SECTIONS MADE OF STEEL ST 37 AND ST 52 TO CHECK THE DESIGN CHARTS IN DIN 4116

UNTERSUCHUNGEN AN VERBINDUNGEN VON RUND- UND RECHTECK-HOHLPROFILEN AUS WERKSTOFF ST 37 UND ST 52 ZUR ABSICHERUNG DER BEMESSUNGSDIAGRAMME DER DIN 4116

THE OBJECT IS TO CHECK THE DESIGN DIAGRAMS IN THE STANDARD WITH SPECIAL REFERENCE TO THE EFFECT OF THE LATTICE-BELT-COMPRESSIVE STRESS ON THE BEARING CAPACITY OF THE JOINT, THE REQUIRED SAFETY OF THE STRUCTURE AND ECONOMIC VIEWPOINTS. TESTS ARE BEING CONDUCTED ON WELDED CONNECTIONS OF ROUNDED AND RECTANGULAR HOLLOW SECTIONS, OF THE SIZE USED IN PRACTICE, IN A SPECIAL FACILITY FOR TESTING MULTIAXIAL LOADING. THE LOADS AND DEFORMATIONS IN THE REGION OF THE JOINT ARE BEING MONITORED. STRAIN MEASUREMENTS ARE BEING UNDERTAKEN SIMULTANEOUSLY FOR CONTROL PURPOSES. THEORETICAL STUDIES AIMED AT DESCRIBING THE BEHAVIOUR OF THE CONNECTION ARE BEING CARRIED OUT IN PARALLEL.