Work

Experimental, numerical and theoretical research on compressive-bending behaviour of tapered high strength CFDST columns with large hollow ratios for support structures of wind turbines

Year: 2025

Type: article

Abstract: This study investigates the compressive-bending bearing capacity of tapered large hollow ratio concrete-filled double-skin steel tubular (TLH-CFDST) structures, which are widely used in critical applications such as large-capacity wind power equipment, high-rise buildings, and offshore platforms. Experimental tests and finite element (FEM) analysis were conducted on six high-strength steel TLH-CFDST columns to analyze failure modes and bearing capacity influences. A full-process prediction model was developed based on the section-space stress integration (SSI) theory and validated through FEM results and parametric analysis . A calculation method incorporating edge yield and full plasticity theories was proposed for the compressive-bending bearing capacity by introducing the section yield coefficient. The results show that the SSI model's moment-displacement curves align well with experimental and FEM data, and the proposed method provides more accurate and stable N-M curve predictions compared to existing specifications. This study offers a reliable theoretical and practical framework for TLH-CFDST structure design.

Source: Ocean Engineering

DOI: 10.1016/j.oceaneng.2025.121193

Authors: Xiang-Hong Liu, Qing Sun, Sital Kumar Dangi, Yan-Yu Zhou, Zai-Yu Zhang, Jian-Tao Wang

Institutions: Xi'an Jiaotong University, Xi'an University of Architecture and Technology

Language: English

Topic: Structural Load-Bearing Analysis

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: hybrid

Estimated APC paid: $4,150