Q690悬架穹顶结构h型钢构件与空心球连接的高强钢螺栓连接在弯曲和剪切下的力学性能

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-04 DOI:10.1016/j.tws.2025.113927

Ailin Zhang, Bowen Jin, Xuechun Liu, Xuesen Chen

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引用次数: 0

摘要

传统的悬索穹顶结构通常采用上部网架壳和大量现场焊接构件和接头，而h型钢构件的应用仍然有限。这种方法导致施工周期延长，焊接质量不一致，并造成严重的环境污染。为了解决这些问题，提出了一种采用h型钢构件的大跨度全组装高性能悬索穹顶结构，并用螺栓连接h型钢构件与空心球体。在弯曲和剪切联合荷载下进行了试验，以研究所提出的节点的面外弯曲性能。得到了锚杆的破坏模式、荷载传递机制、弯矩-旋转曲线、关键性能指标以及锚杆预紧力和应变变化规律。通过有限元分析，研究了接头构件几何参数的影响。提出了联合设计建议。提出了初始抗弯刚度和抗弯承载力的理论计算公式，并与试验结果和有限元分析结果进行了对比验证。

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Mechanical performance of Q690 high-strength steel bolted joints connecting H-section steel members to hollow spheres under bending and shear for suspend-dome structures

Conventional suspend-dome structures typically employ upper latticed shells with extensive on-site welded components and joints, while the application of H-section steel members remains limited. This approach results in prolonged construction periods, inconsistent weld quality, and significant environmental pollution. To address these issues, a large-span fully assembled high-performance suspend-dome structure with H-section steel members was proposed, along with bolted joints connecting the H-section steel members to hollow spheres. Tests under combined bending and shear loading were conducted to investigate the out-of-plane flexural performance of the proposed joints. The failure modes, load transfer mechanisms, moment-rotation curves, key performance indicators, and patterns of bolt preload and strain variation were obtained. The influence of the geometric parameters of joint components was studied through finite element analysis. The joint design recommendations were proposed. Furthermore, theoretical formulations for the initial flexural stiffness and flexural capacities were proposed, and the accuracy was validated through comparison with test and finite element analysis results.

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来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.