Research on Flexural Capacity of Steel Reinforced
Concrete Beams Subjected to Steel Arch Corrosion

WANG Mingnian; LIU Kerui; ZHANG Yiteng; YANG Henghong; YU Li

doi:10.3973/j.issn.2096-4498.2022.01.004

Tunnel Construction >

2022 , Vol. 42 >Issue 1: 26 - 32

DOI: https://doi.org/10.3973/j.issn.2096-4498.2022.01.004

Research on Flexural Capacity of Steel Reinforced Concrete Beams Subjected to Steel Arch Corrosion

WANG Mingnian ,
LIU Kerui ,
ZHANG Yiteng ,
YANG Henghong ,
YU Li

Expand

(1. Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China)

Online published: 2022-01-28

Fold

Abstract

Corrosion of the steel arch in the primary support in subsea tunnel reduces the primary support′s flexural capacity. Electrically accelerated corrosion tests obtain steel arches with different corrosion rates. Concrete beams of steel arches with different corrosion rates are tested to reflect the influence of corrosion on the flexural capacity of steel arches from a macroscopic point of view. The numerical simulation analysis results show the following: (1) The flexural capacity of corroded Isteel concrete beams decreases with increased corrosion rate. The average flexural capacity decreases by 5.1 kN as the corrosion rate increases by 1%. (2) Transverse cracks appear during the loading process of the corroded Ishaped steelconcrete beam when the corrosion rate is less than or equal to 1.5%, and longitudinal penetrated cracks appear when the corrosion rate is greater than 1.5%. (3) As the corrosion rate increases, the bonding effect between concrete and Ishaped steel weakens, and concrete stress and strain increase. On the contrary, the stress and strain of Ishaped steel decrease.

Key words： subsea tunnel; steel arch corrosion; flexural capacity; flexural capacity test; numerical simulation

Cite this article

WANG Mingnian , LIU Kerui , ZHANG Yiteng , YANG Henghong , YU Li . Research on Flexural Capacity of Steel Reinforced Concrete Beams Subjected to Steel Arch Corrosion[J]. Tunnel Construction, 2022 , 42(1) : 26 -32 . DOI: 10.3973/j.issn.2096-4498.2022.01.004

Options

Outlines

〈

〉

模态框（Modal）标题

Abstract

Cite this article