Mechanical behavior of textile-reinforced engineered cementitious composites beams under accumulative impact

被引：0

作者：

Sui, Xupeng ^{[1
]}

Ding, Boyin ^{[1
]}

Gu, Jiaming ^{[2
]}

Zhou, Yichen ^{[1
]}

Lin, Yuanzheng ^{[1
]}

Zhuang, Ke ^{[3
]}

Xu, Yun ^{[3
]}

Jing, Denghu ^{[1
]}

Cai, Jingming ^{[1
]}

机构：

[1] Southeast Univ, Key Lab Concrete & Prestressed Concrete Struct, Minist Educ, Nanjing, Peoples R China

[2] Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Zhuhai, Macau, Peoples R China

[3] State Key Lab Low Carbon Smart Coal Fired Power Ge, Nanjing, Peoples R China

来源：

JOURNAL OF BUILDING ENGINEERING | 2024年 / 98卷

关键词：

Textile-reinforced engineered cementitious; composites; Impact response; Destructive mode; Digital image correlation; DESIGN;

D O I：

10.1016/j.jobe.2024.111188

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Despite the existence of numerous studies on textile-reinforced engineered cementitious composites (TR-ECC) for structural reinforcement, research on their impact behavior is limited. In this study, the mechanical behavior and damage modes of TR-ECC beams under cumulative impact loading were investigated using an automatic drop hammer testing machine and digital image correlation (DIC) method. The study considers and analyzes different types of fiber reinforced polymer (FRP), including carbon fabric, steel fabric, tight-weaved steel fabric and multi-layer steel fabric. It was found that TR-ECC is able to withstand more impact loads and using a tight-weaved steel fabric(E-TSF) has a residual impact performance factor K of 1.4 times that of ECC. E-TSF can increase the energy dissipation by 373.3 % compared to ECC. Additionally, the damage mode of TR-ECC is divided into four stages: matrix cracking, fiber bridging, fabric bearing, and softening.

引用

页数：18

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