Experimental and analytical investigations on ultra-high performance fibre reinforced concrete (UHPFRC)-steel composite slab

Author(s): Jun Xia, Yan Li, Hong Huang, Liang Zhao
Paper category: Proceedings
Book title: 1st International Conference on UHPC Materials and Structures
Editor(s): Caijun Shi and Dehui Wang
ISBN: 978-2-35158-164-3
e-ISBN: 978-2-35158-165-O
Publisher: RILEM Publications SARL
Publication year: 2016
Pages: 569-575
Total Pages: 07
Language: English

Abstract: Steel and concrete composite slab system makes full use of both material and is widely used in bridges and buildings. This paper presents the analytical, experimental, and numerical analysis of one innovative, ultra-high performance fibre reinforced concrete-steel composite slab. This slab system uses parallel placed rectangular steel tubes as tensile resistant members with transverse and longitudinal reinforcement mesh being used as shear keys, which is embedded in the UHPFRC layer. The load bearing capacity of experimental specimens is estimated using equations that follow classic sectional analysis, which gives conservative results when compared to experimental data. The deformation and strain readings recorded during testing exhibits expected load transfer mechanism between concrete layer and steel tubes. The provided connections by using reinforcement mesh are proved to be sufficient to transfer load from concrete portion to steel tube and cause ductile failure due to yielding of steel tubes. The finite element model of the composite slab exhibits higher stiffness and ultimate load capacity, which is due to the imperfect composite action during testing.

Online publication: 2016
Publication type : full_text
Public price (Euros): 0.00