模块化组合支柱轴向压缩行为的实验和理论研究

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2024-10-05 DOI:10.1016/j.tws.2024.112534

Shuangshuang Jin , Zhuojian Long , Zhijie Cao

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引用次数: 0

摘要

模块化钢结构建筑的模块单元之间存在相邻模块柱的组合。由于组合柱之间存在缝隙，缺乏水平连接，组合钢结构的整体性较弱，限制了组合钢结构在高层建筑中的应用。本文提出了一种通过连接件和混凝土实现模块化单柱连接的模块化组合柱，可以提高模块化钢结构建筑的整体性。本文介绍了这种新型模块化组合柱的组装过程。在轴向抗压性能试验中，设计了四种模块化组合柱试件，每种试件的高度或连接板的数量各不相同。根据试验现象和荷载-位移曲线，分析了试件的轴向压缩承载力、延性、刚度和其他力学参数。然后，结合有限元模型对模块化组合柱试件的轴向压缩破坏模式进行了比较和分析。结果表明，本研究提出的组合柱具有优异的轴向压缩性能和延展性。连接件可以通过增强混凝土的约束影响来提高组合柱的整体力学质量。最后，利用叠加原理得出了模块化组合柱的轴向压缩承载力理论方程，并结合试验结果和数值分析结果证实了方程的可靠性。

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Experimental and theoretical study on axial compression behaviour of the modular combined column

Between the modular units of the modular steel building, there exists a combination of the adjacent modular columns. Due to the gaps between the modular columns and the lack of horizontal connections, the integrity of the modular steel structure is weak, which limits the use of modular steel structures in high-rise buildings. This paper proposes a kind of modular combined column realized the connection of modular single columns through the connectors and concrete, which can improve the integrity of the modular steel building. The assembly process of this new modular combined column is described. For axial compressive performance tests, four modular combined column specimens were designed, each with different height or different number of connecting plates. The axial compressive bearing capacity, ductility, stiffness, and other mechanical parameters of the specimens were analyzed according to the phenomena and load-displacement curves of the test. Then, the axial compression failure mode of the modular combined column specimens is compared and analyzed in conjunction with the finite element model. The results indicate that the axial compressive performance and ductility of the combined column suggested in this research are exceptional. The connector can enhance the overall mechanical qualities of the combined column by augmenting the restraining impact of concrete. Finally, the theoretical equation of the axial compression bearing capacity of the modular combined column is obtained by employing the superposition principle, and the equation's reliability is confirmed, along with the test results and the results of the numerical analysis.

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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.