LARGE SCALE TESTS ON WELDED CONSTRUCTION SITE JOINTS IN METAL GIRDERS ON RAILWAY BRIDGES

GROSSTEILVERSUCHE MIT GESCHWEISSTEN BAUSTELLENSTOESSEN IN BLECHTRAEGERN VON EISENBAHNBRUECKEN

THE ADMISSIBLE STRESSES ACCORDING TO DV 848, ABSTRACT 4.22 WERE CHECKED IN THE DAST SUB-PROGRAMMES I - VII USING SO-CALLED SMALL SAMPLES. THE EFFECT, WHICH IN CONTRAST TO THE SMALL SAMPLES IS PRODUCED USING TEST SPECIMENS WHICH ARE MADE AS FAR AS POSSIBLE TO FULL-SCALE AND UNDER CONSTRUCTION SITE CONDITIONS, SHOULD NOW BE CONFIRMED IN LARGE-SCALE TESTS. WITH EACH OF 3 TEST SPECIMENS FROM THREE TYPES OF TEST SPECIMEN ENVISAGED, FATIGUE STRENGTH TESTS WITH R = 1 SHOULD BE CARRIED OUT. AT THE MOMENT, OFFERS FOR CARRYING OUT THESE FATIGUE TESTS ARE BEING COLLECTED. WHEN THE TEST ESTABLISHMENT SUBMITTING THE LOWEST TENDER IS FOUND, THE ORDER FOR THE PRODUCTION OF THE TEST SPECIMENS APPROPRIATE TO THE TEST ESTABLISHMENT WILL BE GIVEN.