STUDY OF THE BEARING CAPACITY OF STEEL STRUCTURES WITH LEVEL, DISC-LIKE STRESSED PLATES BY MEANS OF REALISTIC LARGE-SCALE TESTS. PART 3: 4-STIFFENED FULL WALL AND BOX GIRDERS

UNTERSUCHUNG DER TRAGFAEHIGKEIT VON STAHLKONSTRUKTIONEN MIT EBENEN, SCHEIBENARTIG BEANSPRUCHTEN BLECHEN MITTELS WIRKLICHKEITSNAHER GROSSVERSUCHE. TEILPROGRAMM 3/4: AUSGESTEIFTE VOLLWAND- UND KASTENTRAEGER.

"TESTS ON REALISTIC LARGE-SCALE MODELS" SHOULD BE PERFORMED IN SUCH A WAY THAT - DIRECTED EXPRESSLY TO PRACTICAL USE - THEY CAN BE USED TO SUPPORT THEORIES AND METHODS OF CALCULATION. IT IS INTENDED TO CARRY OUT 5 REALISTIC LARGE-SCALE TESTS WHICH FIRSTLY SHOULD DEAL WITH THE CASE A) SECTIONAL LOADING CAPACITY OF WEBS SUBJECTED TO THE DANGER OF BUCKLING WITH THE TRANSFER OF LONGITUDINAL BENDING STRESSES (INCLUDING REMAINING "FOUNDATION SUPPORT" FOR THE COMPRESSED GIRDER CHORD). THEORIES, CLARIFIED PREVIOUSLY BY TESTS - WHICH HAVE TO BE CONFIRMED - EXIST FOR BOTH CASES. THE MODELS ARE VERY MUCH LIKE EARLIER TYPES. THE RESOLVING OF THE BUCKLING PROBLEM OF REINFORCED PRESSED CHORDS OF BOX GIRDERS - NOW, AS BEFORE - IS LIKEWISE URGENT. IN ORDER TO BE ABLE TO ESTABLISH MATHEMATICAL AND DIMENSIONING RULES WHICH CAN BE OF PRACTICAL USE, AND IN ORDER TO SUPPORT THE PREVIOUSLY PROPOUNDED THEORIES, TWO OTHER TEST GIRDERS DEVELOPED FROM EARLIER MODELS ARE CONSIDERED. SELF-CONTAINED PARTS (OF PROGRAMMES) ARE AT PRESENT BEING DEALT WITH BY THE DFG AND WHERE NECESSARY BY THE AIF. FURTHER PART PROGRAMMES ARE UNDER THE IRRD NUMBERS 701200, 701201 AND 701202.