Experimental Study on Shear Performance of Prestressed UHPC-RC Composite Beams without Stirrups

DOI

10.2991/978-94-6463-726-7_70How to use a DOI?

Keywords

prestressed UHPC-RC composite beams without stirrups; shear bearing capacity; full-scale model test; failure mode

Abstract

The prestressed UHPC-RC composite beams without stirrups is a common new type of beam structure at present, and there is relatively little research on the shear performance and shear calculation methods of this type of structure. This article first designed an experimental plan for the shear test of model beams and conducted shear tests on 15 full-scale test beams; Subsequently, based on the results of shear tests, the stress mechanism and failure mode of the test beam were analyzed and summarized; Finally, based on the study of shear performance parameters, a shear bearing capacity calculation formula applicable to a certain parameter range was proposed. The experimental and analytical results of this article indicate that the shear span ratio of the test beam has the greatest impact on the shear bearing capacity, followed by the thickness of the web plate. The influence of steel fiber content and cross-sectional compressive stress level on the shear bearing capacity is relatively small; The prestressed UHPC-RC composite beams without stirrups exhibits good shear ductility relying on the UHPC web plate, and the shear failure mode is no longer brittle failure similar to traditional concrete beams.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Zhanjun Huang
AU  - Xiangdong Sun
AU  - Hanhao Zhang
AU  - Dongjin Xu
AU  - Zuoyue He
PY  - 2025
DA  - 2025/06/13
TI  - Experimental Study on Shear Performance of Prestressed UHPC-RC Composite Beams without Stirrups
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 696
EP  - 707
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_70
DO  - 10.2991/978-94-6463-726-7_70
ID  - Huang2025
ER  -