秦 希

在钢-混凝土组合结构应用中，焊钉联接被普遍使用作为一种固定方法。当受到载荷的影响，焊钉的联接区域发生形变，这种形变有可能引起钢材与混凝土之间界面的相对滑动。尤其在组合结构桥梁项目中，这种连接件经常面临多轴载荷的挑战。目前，针对在剪切与拉伸共同作用下焊钉连接的力学行为，相关研究仍显不足。通过对8个不同配置的焊钉连接模型进行加载试验，本研究对比并分析了它们在单调加载条件下的破坏模式、剪力-滑移响应曲线、分离量与滑移关系曲线以及应变演化曲线。

组合结构；焊钉连接件；剪拉；滑移；拉拔力

[1] Pi Y, Bradford M A, Uy B. Second order nonlinear inelastic analysis of composite steel–concrete members. II: Applications[J]. Journal of Structural Engineering, 2006,132(5):762-771. [2] Qi J N, Wang J Q, Li M, et al. Shear capacity of stud shear connectors with initial damage: Experiment, FEM model and theoretical formulation[J]. Steel and Composite Structures, 2017,25(1):79-92. [3] Newmark N M. Test and analysis of composite beams with incomplete interaction[J]. Proceedings of society for experimental stress analysis, 1951,9(1):75-92. [4] Viest I M. Investigation of stud shear connectors for composite concrete and steel T-beams[J]. Journal of American Concrete Institute, 1956,27(8):875-891. [5] Slutter R G, Driscoll G C. Flexural strength of steel-concrete composite beams[J]. Journal of the Structural Division, ASCE, 1965,91:71-99. [6] Ollgaard J G, Slutter R G, Fisher J W. Shear strength of stud connectors in lightweight and normal weight concrete[J]. AISC Engineering Journal, 1971,8(2):55-64. [7] 王倩. 焊钉连接件基本力学性能试验及设计方法研究[D]. 同济大学, 2013. [8] Su Q T, Yang G T, Qin F, et al. Investigation on the horizontal mechanical behavior of steel-concrete composite cable-pylon anchorage[J]. Journal of Constructional Steel Research, 2012,72(4):267-275.

点击下载PDF