Work

Compressive performance of CFSTs strengthened with BFRP textile-reinforced ECC

Year: 2025

Type: article

Abstract: This paper presents test and numerical studies on the behaviours of basalt fibre textile and engineered cementitious composite (ECC) reinforced concrete-filled steel tube (CFST) columns under axial compression. A total of 17 specimens were subjected to axial compression, with variables including the number of basalt fibre layers, mesh size, steel tube thickness and concrete strength grade. The behaviours were analyzed through the failure patterns, load-vertical strain responses, and the confinement mechanism. Results indicated that textile-reinforced ECC (TR-ECC) enhanced the axial performance of CFST columns, with ultimate strength improvement ranging from 9% to 22%. A series of finite element (FE) models were then established and validated by comparing the load versus displacement curves with test data. Parametric studies were conducted to investigate the influence of the number of textile layer, textile grid size, material strength and steel ratio on the axial capacity. Finally, a simplified formula for calculating the axial capacity of the CFSTs reinforced with TR-ECC was developed.

Source: Journal of Constructional Steel Research

DOI: 10.1016/j.jcsr.2025.109545

Authors: Hui Zhao, Lintao Wang, Linghua Shen, Yunhe Wang, Rui Wang, Yajun Zhang

Institution: Taiyuan University of Technology

Language: English

Topic: Structural Load-Bearing Analysis

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,310

Funders: National Natural Science Foundation of China, International Science and Technology Cooperation Program of Shanxi Province, Science and Technology Innovation Group of Shanxi Province