Design of 38m Span Post-tensioned Ultra High Performance Fiber-Reinforced Concrete (UHPFRC) Composite Bridge

14th International Conference on Concrete Engineering and Technology

Hafezolghorani, Milad^1 ; Voo, Yen Lei^1,2

Dura Technology Sdn. Bhd., Lot 304993, Jalan Chepor 11/8, Pusat Seramik Fasa 2, Ulu Chepor Perak, Chemor

31200, Malaysia^1

School of Civil and Environmental Engineering, University of New South Wales, Australia^2

关键词: Composite sections;    Construction loads;    Design calculations;    Material specification;    Moment resistance;    Structural analysis softwares;    Ultra high performance fibre reinforced concretes;    Ultra-high-performance fiber-reinforced concrete;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/431/4/042007/pdf
DOI  :  10.1088/1757-899X/431/4/042007

来源: IOP

【 摘 要 】

Although ultra-high-performance fibre reinforced concrete (UHPFRC) has become commercially available in many countries, there are still limited design standards for UHPFRC structures. In 2016, the French Standard Institute has published the world first design standard for UHPFRC structures (NF P18-710) which is read conjunction with the UHPFRC material specification code (NF P18-470). This standard is the national complement to Eurocode 2 for the design of UHPFRC structures. To date, there have several UHPFRC bridges been designed by using this French Standard. The aim of this paper is to demonstrate working example on the design calculation of 38m span post-tensioned UHPFRC composite bridge using DURA® Grade140 which was recently constructed in Kuala Terengganu. The working example mainly focus on (i) the material properties input in the structural analysis software - Midas Civil; (ii) the output results on the design forces at the critical sections (mainly the design moment effect, MEd, and design shear force effect, VEd); (iii) the stresses of the post-tensioned UHPFRC U-girder at transfer, at different construction load history and at service stage (iv) the design moment resistance (MRd) and design shear resistance (VRd) of the composite section.