Structural Behaviour of FRP-Reinforced Tubular T-Joint Subjected to Combined In-Plane Bending and Axial Load-Reference-Cited by-同舟云学术

Structural Behaviour of FRP-Reinforced Tubular T-Joint Subjected to Combined In-Plane Bending and Axial Load

Published:2024-02-02 Issue:2 Volume:14 Page:412
ISSN:2075-5309
Container-title:Buildings
language:en
Short-container-title:Buildings

Author:

Deng Peng¹²,Chen Yunkai²,Zhu Zhongyi²³,Liu Yan¹²,Zhao Shiqi²,Guo Jian²^ORCID

Affiliation:

1. Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao 266590, China

2. College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao 266590, China

3. Beijing Institute of Architecture Design, Beijing 100055, China

Abstract

In this study, 90 finite-element models are used to explore the behaviour of fibre-reinforced polymer (FRP) reinforced joints under combined in-plane bending (IPB) and axial load (AX). The effects of joint geometry, FRP layer count, and AX levels of the chord or brace are considered. Three typical failure modes are observed: chord plastic failure, brace plastic failure, and brace buckling failure. Increasing the number of FRP layers can ensure that failure is chord-related failure in a ductility manner rather than the unexpectedly brace-related brittle failure. Depending on the stress distribution of fibres, FRP reinforcement can restrict the deformation of joints subjected to complex loading patterns. Moreover, added FRP layers efficiently reduce the effect of brace AX on the IPB resistance. Finally, a modified strength equation is established, including the influence of FRP reinforcement, chord AX, and brace AX.

Publisher

MDPI AG

Subject

Building and Construction,Civil and Structural Engineering,Architecture

Link

https://www.mdpi.com/2075-5309/14/2/412/pdf

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