采用新型盲栓剪力连接件的钢-混凝土组合桥梁的结构性能

IF 4 3区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Steel and Composite Structures Pub Date : 2021-01-01 DOI:10.12989/SCS.2021.40.4.581

S.M. Hosseini, F. Mashiri, O. Mirza, B. Hart

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引用次数: 0

摘要

本研究的目的是确定更有效和可靠的连接方法来设计钢/混凝土组合结构体系，重点是可持续性。虽然使用创新的盲栓剪力连接件来替代焊接螺柱在可施工性和可持续性方面带来了一些好处，但对高强度盲栓剪力连接件的研究成果非常有限。因此，在本研究中，根据欧洲规范4的标准，对传统焊接螺柱和盲栓剪切连接器进行了几个推出试验，以确定其极限承载力、延性、刚度、应力-应变和荷载-滑移性能。另外，对两种剪力连接件进行了有限元分析，确定了影响剪力连接件静强度的因素。通过与推出试验结果的对比，验证了所建立的三维有限元模型的可行性和准确性。实验和有限元模拟结果表明，在静荷载条件下，盲栓剪切连接将是传统焊接螺柱的合适替代方案。

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Structural performance of steel-concrete composite bridges utilising innovative blind bolt shear connectors

The purpose of this research is to identify more efficient and reliable connection methods to design a composite steel/concrete structural system with a focus on sustainability. While using innovative blind bolt shear connectors into substitute for the welded stud brings several benefits regarding constructability and sustainability, research contributions on the high strength blind bolt shear connector are very limited. Therefore, in this study, several push-out test specimens were carried out, in accordance with the Eurocode 4 standards, for both the traditional welded stud and the blind bolt shear connector, to determine the ultimate capacity, ductility, stiffness, stress-strain and load versus slip performance. In addition, finite element analysis has been done on the two types of shear connectors to determine the factors influencing static strength of shear connectors. The feasibility and accuracy of the 3-D finite element model developed in this work was validated by comparing with experimental results obtained from push-out tests. Experimental and finite element modelling results revealed that the blind bolt shear connectors would be an appropriate alternative to the traditional welded stud for sustainable purposes under static loading conditions.

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来源期刊

Steel and Composite Structures 工程技术-材料科学：复合

CiteScore

8.50

自引率

19.60%

发文量

审稿时长

7.5 months

期刊介绍： Steel & Composite Structures, An International Journal, provides and excellent publication channel which reports the up-to-date research developments in the steel structures and steel-concrete composite structures, and FRP plated structures from the international steel community. The research results reported in this journal address all the aspects of theoretical and experimental research, including Buckling/Stability, Fatigue/Fracture, Fire Performance, Connections, Frames/Bridges, Plates/Shells, Composite Structural Components, Hybrid Structures, Fabrication/Maintenance, Design Codes, Dynamics/Vibrations, Nonferrous Metal Structures, Non-metalic plates, Analytical Methods. The Journal specially wishes to bridge the gap between the theoretical developments and practical applications for the benefits of both academic researchers and practicing engineers. In this light, contributions from the practicing engineers are especially welcome.