Theoretical Study on the Calculation Method of Ultimate Torque of Prestressed UHPC-RC I-shaped Composite Beam

DOI

10.2991/978-94-6463-726-7_71How to use a DOI?

Keywords

Structural engineering; prestressed UHPC-RC composite beam; I-shaped cross-section; Ultimate torque

Abstract

The prestressed UHPC-RC I-shaped composite beam is a common new type of beam structure, but there is relatively little research on its torsional calculation method This article derives the theoretical formula for ultimate torque based on the theory of variable angle spatial trusses; Subsequently, the accuracy of the theoretical formula was verified by finite element calculation results, and the difference between the theoretical value and the finite element calculation value was only 2.3% The calculation results of the variable parameter analysis in this article indicate that increasing the initial prestress of the section appropriately or improving the tensile (post crack) strength of UHPC can enhance the ultimate torque of the section; Considering the initial pre stress and post cracking strength of UHPC, the ultimate torque of the section can be increased by 272.1 kN·m (57.9%) and 359.6 kN·m (94.1%), respectively.

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  - Hanhao Zhang
AU  - Xiangdong Sun
AU  - Dongjin Xu
AU  - Zuoyue He
PY  - 2025
DA  - 2025/06/13
TI  - Theoretical Study on the Calculation Method of Ultimate Torque of Prestressed UHPC-RC I-shaped Composite Beam
BT  - Proceedings of the 2024 6th International Conference on Hydraulic, Civil and Construction Engineering (HCCE 2024)
PB  - Atlantis Press
SP  - 708
EP  - 717
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6463-726-7_71
DO  - 10.2991/978-94-6463-726-7_71
ID  - Huang2025
ER  -