期刊名称：Bulletin of the Polytechnic Institute of Jassy, Constructions, Architechture Section
印刷版ISSN：1224-3884
电子版ISSN：2068-4762
出版年度：2015
卷号：LXV
期号：4
页码：157-164
出版社：Gheorghe Asachi Technical University of Jassy
摘要：This document aims to presents the comparison in terms of failure force and failure mechanism between a real life experiment conducted in 2008 on a highway prestressed and precasted box beam subjected to concentrated loads and loaded until failure in 6 load cicles and a 3-D finite element model prestressed, loaded and constrained in the exact same manner. The reason for a 3-D finite element model was to a better observing of the behavior of stress, strain and crack distribution in the beam and to calibrate the model in order to make a parametric study in the future, varying different aspects: load application, section thickness, prestress, etc. The results of this study may provide important informations, considering that our country has a huge potential for implementation of prestressed box girders due to the urgent need to achieve a modern and adequate transport infrastructure. The validity of the proposed model is demonstrated as follows by comparison with experimental results obtained by INCERC. This paper deals with the largest destructive test, ever performed in Romania on a prefabricated bridge box girder.
关键词：prestressing; precast box beam; failure; 3; D finite element model (FEM).
