Modelling Flexural Tests on UHPFRC Thin-Walled Structures
MARCHAND ; BABY ; AL KHAYER ; ATTRACH ; TOUTLEMONDE
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
MARCHAND ; BABY ; AL KHAYER ; ATTRACH ; TOUTLEMONDE
Résumé / Abstract
The paper presents the results of analytical and numerical simulation of flexural tests under concentrated load carried out on waffle UHPFRC slabs developed in the frame of the French Mikti national R & D project and thin-walled UHPFRC box-cells representative of these slabs. While the failure on UHPFRC slabs was a punching failure, the box cells showed a ductile failure mode in flexion. Typical yield lines pattern has been observed, which typically illustrates the ductile bending failure mode of clamped UHPFRC thin plates. The experimental results have been compared with the results of non linear finite element models and with a simpler approach based on the yields line theory. These two methods have enabled to better understand the failure mechanisms and the behaviour of the 5 cm-thick UHPFRC plate during the tests.
