Test and Theoretical Investigations on Flexural Behavior of High-Performance H-Shaped Steel Beam with Local Corrosion in Pure Bending Zone

被引：9

作者：

Tang, Huang ^{[1
,2
]}

Peng, Jianxin ^{[3
]}

Peng, Hui ^{[3
]}

Yang, Yiming ^{[1
,2
]}

Gao, Qiong ^{[4
]}

Xiao, Linfa ^{[5
]}

Li, Hai ^{[1
,2
]}

Zheng, Liangfei ^{[4
]}

Chen, Zexiang ^{[4
]}

Yang, Zonggui ^{[4
]}

机构：

[1] Hunan City Univ, Key Lab Green Bldg & Intelligent Construct Higher, Yiyang 413000, Peoples R China

[2] Hunan City Univ, Hunan Engn Res Ctr Dev & Applicat Ceramsite Concre, Yiyang 413000, Hunan, Peoples R China

[3] Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410114, Hunan, Peoples R China

[4] Hunan City Univ, Sch Civil Engn, Yiyang 413000, Hunan, Peoples R China

[5] East China Jiaotong Univ, Sch Transportat Engn, Nanchang 330013, Jiangxi, Peoples R China

来源：

STEEL RESEARCH INTERNATIONAL | 2024年

基金：

中国国家自然科学基金;

关键词：

flexural behavior; flexural strength model; high-performance steel; local corrosion; pure bending zone; MECHANICAL-BEHAVIOR; STRENGTH; CAPACITY;

D O I：

10.1002/srin.202400640

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

This article undertakes the tested and theoretical investigations on the flexural behaviors of high-performance steel (HPS) beams subjected to local corrosion in pure bending zone. Four H-type HPS beams are designed, then the flexural bearing capacity test is carried out. Mechanical behaviors, including load-deflection response, strain development, and failure modes are investigated in detail. A simple theoretical model of flexural strength is proposed. The tested and theoretical results show that: with the increase of corrosion rate, the random distribution of the residual section of HPS beam tends to be stable, the corrosion position also plays an important role in the random distribution of the residual area. The corrosion position has a greater influence on the residual flexural strength of corroded HPS beam than the corrosion degree. The theoretical flexural strength model can slight accurately predict the flexural strength of corroded H-type HPS beam, the error is less than 5%. The corrosion of compressive flange has the most serious effect on the flexural strength degradation of HPS beams, followed by the corrosion of tensile flange and web corrosion. The influence of corrosion in the web height direction on the flexural strength of corroded HPS beam is extremely limited.

引用

页数：14