Design method of fabric formed concrete beams reinforced with W-FRP

Yuanzhang Yang, Jiangpeng Shu, Weijian Zhao, John Orr, Tim Ibell

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding


Flexible moulds as external formwork and a novel robotically fabricated reinforcement, Wound FRP (W-FRP), provide the solution for the manufacture of complex structural concrete components being optimised to minimise material use and further reduce the carbon emissions from constructional industry. However, previous research has shown that the non-prismatic geometries and linear-elastic reinforcement could result in very different structural behaviours from the traditional concrete beams and invalidity of the existing codified design approaches. This research proposes revisions to the empirical equation to calculate the tensile force of inclined flexural reinforcement and a design method to predict the shear capacity of the W-FRP reinforced non-prismatic beams based on Modified Compression Field Theory (MCFT). A full-scale test of fabric formed T beam reinforced with W-FRP was conducted to demonstrate the validity of this new design approach. The research in this paper shows that: 1) the invalidity of the codified design approach could be attributed to the empirical calibration with prismatic beams; 2) geometry of the beam and the W-FRP shear reinforcement ratio are the main factors influence the flexural bar force development and 3) the proposed equation for calculating tensile force of flexural reinforcement could accurately predict the force development. This research provides a practical and valid approach for the future design of non-prismatic beams reinforced with W-FRP and addresses technical challenges in the way to minimising material use in concrete structures.

Original languageEnglish
Title of host publicationProceedings of the fib Symposium 2020
Subtitle of host publicationConcrete Structures for Resilient Society
EditorsBin Zhao, Xilin Lu
PublisherInternational Federation for Structural Concrete
Number of pages9
ISBN (Electronic)9782940643042
Publication statusPublished - 2020
Event2020 fib Symposium: Concrete Structures for Resilient Society - Virtual, Shanghai, China
Duration: 22 Nov 202024 Nov 2020

Publication series

NameProceedings of the fib Symposium 2020: Concrete Structures for Resilient Society


Conference2020 fib Symposium: Concrete Structures for Resilient Society
CityVirtual, Shanghai

Bibliographical note

Funding Information:
The authors acknowledge and are grateful for the support of the BRE CICM (, the University of Bath, EPSRC, China Scholarship Council and Weijiang Zhao Research Team at the Zhejiang University that has resulted in this work. Funding for experimental work from EPSRC grant EP/M020908/1 is acknowledged.

Publisher Copyright:
© Proceedings of the fib Symposium 2020: Concrete Structures for Resilient Society. All rights reserved.

Copyright 2021 Elsevier B.V., All rights reserved.


  • Fabric formwork
  • MCFT
  • Structural behaviour
  • W-FRP

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Architecture


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