采用高强度材料的双皮钢管混凝土构件抗震性能研究

IF 4.3 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2025-10-17 DOI:10.1016/j.istruc.2025.110413

Xin-Yi Li, Wei Li, Long-Hai Lai, Hui-Wen Tian

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引用次数: 0

摘要

本研究对采用高强混凝土和高强钢的CFDST构件的抗震性能进行了试验和数值研究。共试验了8个试件，其中圆形截面试件6个，方形截面试件2个。从破坏模式、荷载-变形关系、刚度退化和耗能能力等方面对其抗震性能进行了评价。试验结果表明，高强度CFDST构件在外筒、夹芯混凝土和内筒共同作用下表现出稳定的循环性能。建立了相应的有限元模型，并对实验结果进行了验证，对关键因素进行了参数化研究。此外，还对现行CFDST设计规定的适用性进行了评价。研究发现，目前的设计方法可以对采用高强度材料的CFDST构件的抗震性能提供合理但保守的预测。

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Seismic performance of concrete-filled double skin steel tubular members using high-strength materials

This study conducted both experimental and numerical studies on the seismic performance of CFDST members using high-strength concrete and high-strength steel. A total of eight specimens were tested under cyclic loading, including six specimens with circular cross-section and two with square cross-section. Seismic performance was evaluated in terms of failure modes, load-deformation relations, stiffness degradations and energy dissipation capacities. Test results show that high-strength CFDST members exhibited stable cyclic behaviour with outer tube, sandwiched concrete and inner tube working together well. A corresponding finite element (FE) model was developed and validated against experimental results, and parametric study was carried out on critical factors. Furthermore, the applicability of current CFDST design provisions was evaluated. It was found that current design method could provide a reasonable yet conservative predictions on the seismic performance for CFDST members using high-strength materials.

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来源期刊

Structures Engineering-Architecture

CiteScore

5.70

自引率

17.10%

发文量

1187

期刊介绍： Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.