JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

Analyzing the strengthening effect of steel-ultra high performance concrete composite on segmental linings

Author(s): Renpeng CHEN, Meng FAN, Hongzhan CHENG, Huaina WU, Yang ZHANG, Bingyong GAO, Shiqiang RUAN
Affiliation(s): Research Center of Underground Space Advanced Technology, Hunan University, Changsha 410082, China; more
Corresponding email(s): hzcheng@hnu.edu.cn
Key Words: Strengthening effects; Steel-UHPC composite; Axial force-moment interaction curve; Shield segmental linings

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Renpeng CHEN, Meng FAN, Hongzhan CHENG, Huaina WU, Yang ZHANG, Bingyong GAO, Shiqiang RUAN. Analyzing the strengthening effect of steel-ultra high performance concrete composite on segmental linings[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2400100

@article{title="Analyzing the strengthening effect of steel-ultra high performance concrete composite on segmental linings",
author="Renpeng CHEN, Meng FAN, Hongzhan CHENG, Huaina WU, Yang ZHANG, Bingyong GAO, Shiqiang RUAN",
journal="Journal of Zhejiang University Science A",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/jzus.A2400100"
}

%0 Journal Article
%T Analyzing the strengthening effect of steel-ultra high performance concrete composite on segmental linings
%A Renpeng CHEN
%A Meng FAN
%A Hongzhan CHENG
%A Huaina WU
%A Yang ZHANG
%A Bingyong GAO
%A Shiqiang RUAN
%J Journal of Zhejiang University SCIENCE A
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%@ 1673-565X
%D in press
%I Zhejiang University Press & Springer
doi="https://doi.org/10.1631/jzus.A2400100"

TY - JOUR
T1 - Analyzing the strengthening effect of steel-ultra high performance concrete composite on segmental linings
A1 - Renpeng CHEN
A1 - Meng FAN
A1 - Hongzhan CHENG
A1 - Huaina WU
A1 - Yang ZHANG
A1 - Bingyong GAO
A1 - Shiqiang RUAN
J0 - Journal of Zhejiang University Science A
SP -
EP -
%@ 1673-565X
Y1 - in press
PB - Zhejiang University Press & Springer
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doi="https://doi.org/10.1631/jzus.A2400100"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: This study aims to assess the comprehensive strengthening effect of a steel-UHPC (ultra high performance concrete) composite strengthening method. The axial force-moment interaction curve (N-M curve) was calculated in a novel way, using cross-sectional strains at ultimate states as well as real-time stress measurements for each material. The enclosed area of the N-M curve was defined as a comprehensive performance index for the system. We validate our approach with comparisons to numerical modeling and full-scale four-point bending experiments. Additionally, strengthening effects were compared for different sagging and hogging moments based on material stress responses, and the impact of various strengthening parameters was analyzed. We find that the N-M curve of the strengthened cross-section envelops that of the un-strengthened cross-section. Notably, improvements in flexural capacity are greater under sagging moments during the large eccentric failure stage, and greater under hogging moments during the small eccentric failure stage. This discrepancy is attributed to the strength utilization of strengthening materials. These findings provide a reference for understanding the strengthening effects and parameters of steel-UHPC composite.

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